Jurnal Ilmu Pertanian Indonesia

Macrozoobenthos as a Bioindicator of Pollution in the Malaka Strait Waters, Indonesia

2025-01-06T10:33:05+07:00

Macrozoobentos are known as organisms that are sensitive to environmental changes, so they are widely used as biological indicators of a water. This study aims to determine the types of macrozoobenthos, the level of diversity, uniformity, and dominance of macrozoobenthos, including the family biotic index (FBI) to detect water quality in Dumai City. The method used was a survey with stations determined through the purposive sampling. Macrozoobenthos samples were collected using a line transect with a square transect and a core sampler. A total of 381 macrozoobentos individuals found in the waters of Dumai City consisted of 6 species from the Gastropods class (Nerita articulata, Chicoreus capucinus, Littorina scabra, Ellobium aurisjudae, Cerithidae quoyii, and Pugilina cochlidium); Bivalvia class: 1 family and 1 species (Polymesoda bengalensis). The highest macrozoobenthos density was found at Station 3 (125 ind/m²) and the lowest at station 1 (21 ind/m²). The Shannon-Wienner diversity index ranged between 1.17 and 1.52. The diversity index at all stations was relatively low, the macrozoobenthos uniformity index was high (0.654697-to 0.783512), and the dominance index was relatively low (0.234078-to 0.43574). The Shannon-Wienner Index and the dominance index are also relatively low. Further testing using the FBI showed differences in water quality: Station 1 was adequate, Station 2 was poor, while Station 3 was somewhat poor. Monitoring macrozoobenthos diversity can be helpful in detecting changes or disturbances in ecosystems.

Keywords: bioindicator, diversity, Family Biotik Index, macrozoobenthos

Inventory of Weeds in Mexican Park, Bogor Botanical Garden

2025-01-03T10:36:55+07:00

The Bogor Botanical Gardens' Mexican Park presents various dry-climate plants useful for recreation and learning. The presence of weeds in the collection site would have a negative impact because they can inhibit the growth of the collection plants. This study examined the diversity of weeds in the Mexican Park, Bogor Botanical Gardens. This descriptive study took place in the Bogor Botanical Gardens, specifically in the Mexican Park, and weed identification was carried out at the National Research and Innovation Agency. The weed data obtained was then analyzed descriptively through a literature study. The results showed that there were 52 weed species from 28 families. Most species came from the Asteraceae and Araceae families. The block that had the most weeds was Block II.O.IV, with a total of 15 weed species. The species that were often found in each area of the Mexican Garden Collection include Euphorbia graminea Jacq., Euphorbia heterophylla L., Calliandra calothyrsusMeisn, Coleus monostachyus (P. Beauv.) AJ Paton, Cecropia peltate L., and Cissus verticillata subsp. verticillata.

Keywords: Inventory, Weeds, Mexican Park, Bogor Botanical Garden

Model-Based Approach for Clustering Regencies/Cities in The Land of Papua Based on Food Security Indicators

2024-12-31T14:15:12+07:00

The demand for food continues to increase as population growth concerns the Indonesian government, as stated in the second goal of the Sustainable Development Goals, namely zero hunger. The National Food Agency (BPN) uses the Food Security Index (IKP) to monitor food security conditions in Indonesia's district/city and provincial levels. Based on the BPN data, most districts/cities in The Land of Papua (so called Irian Province before the year 2000) are food insecure. However, the IKP has a weakness in the subjectivity of determining weights so that it can disguise the failure of a program or exaggerate a success. The model-based clustering (MBC) method can measure the food security of districts/cities in this area based on food security indicators. However, the data conditions are generally not multivariate distributed, and there are many outliers, so this study used MBC with multivariate t distribution because it is more robust. The best model was obtained with two clusters based on the largest Bayesian Information Criterion value. Cluster 1, located in the mountains and islands such as Nduga, Intan Jaya, Mamberamo Tengah, Puncak, and Lanny Jaya, had low food security, low indicator achievements with high poverty characteristics, many households with a portion of household expenditure on the food of more than 65%, low access to electricity and clean water, low life expectancy and average years of schooling for women, and the percentage of stunted toddlers. Meanwhile, Cluster 2, areas with high food security, had the opposite condition.

Keywords: food security, model-based clustering, multivariate t distribution, Land of Papua

Selection of Proteolytic Lactic Acid Bacteria with Probiotic Properties for Fish Protein Hydrolyzate Production

2024-12-31T10:58:07+07:00

This study aimed to select a proteolytic LAB with probiotic properties that can be applied to manufacture protein hydrolysate from fish heads. Tests on 20 isolates of LAB showed that nine isolates were proteolytic and non-pathogenic. A total of 5 isolates could grow well at 0.5% bile salt stress, and 3 of them could grow at pH 3. These three isolates had antagonistic ability against Salmonella bacteria, and one isolate was sensitive to the antibiotic tested. Molecular identification of the selected LAB isolates showed a 100% sequence similarity with Pediococcus pentosaceus with accession number MT515895.1. The LAB isolate has high proteolytic activity since it can increase the soluble fraction of fish meal powder from 32.10% to 88.38% in 48 hr. Production of protein hydrolysate using tuna waste was carried out for 30 days. Tuna waste protein hydrolysate had a medium antioxidant activity of 25.57 ± 0.93%. The hydrolyzed protein comprised 17 amino acids, including nine non-essential and eight essential amino acids, and is dominated by glutamic acid. Selected LAB isolate is potentially used in protein hydrolysate production, especially for flavor enhancers.

Keywords: antagonistic, amino acid, Pediococcus pentosaceus

Molecular and Growth Responses of Musa acuminata var. Barangan Post Application of Beneficial Endophytic Bacteria

2024-12-30T18:10:50+07:00

Endophytic bacteria reside in plants' roots and can benefit plant growth. The study aimed to evaluate the application of an endophytic bacterial consortium in enhancing the growth of banana plants and identify genes that maximally assist in nutrient utilization during banana plant growth. One-month-old banana plants were inoculated by soaking them for one hour in a 500 mL suspension of endophytic bacteria. In vivo observations were conducted in the greenhouse at Al-Azhar University Indonesia over 40 days, during which morphological and physiological growth were calculated. The results revealed that control plants exhibited lower growth than those treated with endophytic bacteria. The application of endophytic bacteria led to increased growth in banana barangan plants, as evidenced by improvements in leaf length, leaf width, plant height, and chlorophyll levels. Furthermore, a semi-quantitative analysis of banana plants treated with Cytobacillus depressus, Bacillus stratophericus, and B. mycoides revealed genes significantly contributing to growth. These genes, including WRKY33, Ma03_92660, Ma01_901890, Ma04_936790, and Pho-1,2, exhibited their highest expression levels starting from the 28th day of the experiment.

Keywords: plant growth, endophytic consortium bacteria, semi-quantitative real-time PCR, identify genes

Composition of Growing Media and Concentration of Foliar Fertilizer Affected Yield and Quality of Purple Eggplant (Solanum melongena L.)

2024-12-30T18:14:20+07:00

The study aimed to obtain the best combination of growing media composition and the concentration of foliar fertilizer (Gandasil B) on the yield quality of eggplant. The research was conducted from December 2022 to February 2023 in Nganjuk Regency, using a completely randomized design of two factors. The first factor was composition of the growing media, which comprised of soil:husk charcoal:cow manure with ratios of (1:1:1), (1:1:2), (1:2:1), and (2:1:1), and the second factor was the concentration of foliar fertilizer (0, 2, 4, 6 g/L). The results exhibited that the combination of (1:2:1) medium growing composition and the 2 g/L concentration of foliar fertilizer produced the best fruit diameter with an increase of 22.35% compared to the combination of growing media (1:1:1) and concentration of foliar fertilizer of 2 g/L. The composition of the soil growing medium 1:2:1 gave the best results on fruit length and diameter, average fruit weight, and total fruit weight per plant. A quadratic regression analysis of the concentration of foliar fertilizer and the number of purple eggplant fruits showed that the highest concentration of foliar fertilizer was 5.78 g/L.

Keywords: foliar fertilizer, fruit diameter, growing medium, purple eggplant

Diversity of Oil Palm Seedlings Jambi Accessions Exhibits Physiology Responses Differently During a Waterlogged

2024-12-31T10:58:42+07:00

Cultivated oil palm is commonly found in several ecosystems with different topographies, including riparian areas. This ecosystem is expected to affect the morphology and physiology of oil palms. In addition, oil palm habitats in riparian or flooded ecosystems will experience anaerobic respiration. Indonesia has the potential to access quality palm oil that can be used for cultivation. This study aimed to determine which oil palm accessions could adapt physiologically to the duration of waterlogging. The accession of oil palm seedlings from Jambi tested were Merangin, Tebo, Muara Jambi, Tanjung Jabung, and Simalungun. The research design was to treat waterlogging in a greenhouse and then analyze the plant growth and physiology. Waterlogging was given for two, four, and six weeks. The results showed that the accession of oil palm seedlings and the duration of waterlogging affected photosynthesis rate, transpiration rate, and stomatal conductance. Growth parameters, i.e., fresh weight, dry weight, and root/shoot ratio, were significantly different in accession and waterlogging duration. In conclusion, accessions from Tebo and Merangin can adapt to waterlogging.

Keywords: Merangin accession, photosynthesis rate, stomatal conductance, Tebo accession

Vulnerability Level of Small-scale Fishery Enterprises in Central Tapanuli, North Sumatra

2024-12-31T22:40:28+07:00

Numerous operational variables constantly threaten small-scale fishery enterprises, increasing vulnerability and the possibility of economic stagnation. The goal of this study was to investigate the vulnerability of small-scale fishery enterprises in Central Tapanuli Regency. The study looked at six aspects of vulnerability: natural, human, physical, financial, social, and institutional. The methodology employed was participative, using interviews, observations, and Likert scale questionnaires. The study's findings revealed that seasonal and weather circumstances were the most significant weaknesses affecting fishery enterprises. Except for the marketing group, which showed a greater degree of vulnerability was visible in terms of institutional supporting and participation by fishermen's groups. Finally, fishery enterprises can improve their resilience by developing business groups and implementing treatments tailored to each group's individual needs. This study proposes technical methods to increase the resilience and sustainability of the region's fisheries enterprises.

Keywords: Central Tapanuli, fisheries business, resilience, vulnerability

Social, Economic, and Environmental Impacts of Sentul Rain Forest Tourism Development

2025-01-04T01:21:55+07:00

Sentul Rain Forest Tourism (SRFT) is one of the ecotourism objects developed in a forest area managed by Perhutani Public Company in collaboration with a private company. This study examined the social, economic, and environmental impacts of SRFT on the surrounding community before and after SRFT development. The study used quantitative descriptive analysis methods, with interviews and questionnaires. Respondents were divided into two groups: community groups receiving direct and indirect impacts. The results showed that SRFT had a positive social impact, namely increasing social accessibility, which can increase people's mobility. Economically, SRFT created jobs and increased people's income in community groups with direct and indirect impacts. Environmentally, it increased the tree covering and positively changed people's attitudes towards forest management. However, the development of SRFT also has a negative impact. Socially, increasing conflict between tourists and the community, both in the community groups receiving direct and indirect impacts. Economically, it increased the externality costs to community groups that receive direct impacts.

Keywords: economy impact, ecotourism, environmental impact, rain forest, social impact

Losses in Each Stage of Rice Harvest and Postharvest

2025-01-04T01:24:32+07:00

Indonesia ranks second in the world for high food loss and waste levels, totaling 300 kg per capita per year. Most of these losses occur during harvesting and post-harvest stages before the produce reaches the consumer. This research aimed to determine the correlation between these stages and production loss. The research was conducted using a descriptive quantitative method in Sungai Besar Village, Ketapang Regency, from November 2022 to February 2023. The respondents in this study were 89 farmers in the village. The results showed that each stage, including the harvesting and post-harvest stages, was correlated to yield loss. The yield loss at each stage varied greatly and is affected by several factors, including harvest age, harvesting methods, tools, rice varieties, threshing mechanisms, threshing delays, drying duration, drying medium size, grain cleaning, raw grain materials, maturity level, and milling machines. The percentage of yield loss ranges from 2 to 4.46% (in the harvesting and threshing stages), 0.52 to 1.55% (in the drying stage), and 1 to 2,5% (in the milling stage).

Keywords: rice, food loss, harvester, post-harvest

Strategic Orientation, Culture, and Commitment Toward Institutional Performance of Independent Palm Oil Farmers

2025-01-03T10:38:18+07:00

Independent oil palm farmers are crucial to the growth of the national economy. However, due to subpar institutional and farmer group performance, independent oil palm farmers' productivity still needs to improve. This research aimed to maximize institutional performance within the frameworks of social exchange theory and resource-based view theory. The study employed structural equation modeling, or SMART-PLS, and quantitative descriptive methodologies to examine 92 farmer group administrators in Sambas Regency, West Kalimantan. The study's findings illustrate that strategic orientation, culture, and commitment affect institutional/farmer group performance. In maximizing institutional performance, the following was done: 1) planning for environmental conservation by setting clear deadlines and assigning members to consider environmental sustainability and refrain from burning land; 2) communicating with the community and members to foster community harmony; 3) holding online group discussions for members who are unable to attend in order to save time discussing issues collectively; b. imposing strict sanctions for infractions by its members; 4) fostering active dialogues among members and working directly or virtually with instructors regarding oil palm cultivation knowledge. The most recent study aims to develop strategies for enhancing institutional and farmer group performance through strategic orientation, culture, and commitment.

Keywords: farmer group, performance, independent oil palm farmers, SMART-PLS

Estimated Shallot Yield Area Using the Rapid Classification of Croplands Method

2024-12-30T22:41:01+07:00

Shallots are one of the horticultural commodities that have fluctuating prices. Market integration occurs horizontally but not vertically due to poor information systems at the producer and consumer levels. This study aimed to estimate the area of shallot land quickly using the rapid classification of croplands method. The research was conducted in Merek District, Karo Regency, North Sumatra. Primary data obtained from survey activities were processed using the Google Earth Engine platform. Classification and regression trees (CART) and random forest (RF) algorithms were used to classify land cover as onion and non-onion classes. The shallot land area based on this method was 74.4 hectares, with an area accuracy of 95% (RF) and 24% (CART) and a location accuracy of 92% (CART and RF). The rapid classification of croplands method can estimate land area quickly. It helps stakeholders who need information on shallot production projections and can be developed to improve the vertical market integration information system (market integration between producers and consumers). Some areas for improvement of this method are limited access and resolution, inability to describe up to the level of garden bunds, and the condition of the area covered by clouds, which will affect the accuracy of the results.

Keywords: shallots, production estimation, google earth engine, remote sensing

Plant Breeding Techniques in Tissue Culture to Improve the Quality of Orchids

2024-12-31T22:05:14+07:00

Conventional orchid cultivation is thought to be ineffective and time-consuming. Simple tissue culture procedures are insufficient to increase orchid quality. The need for ongoing development can be met by integrating different plant breeding strategies in orchid tissue culture, such as induction mutation, elicitor addition, and genetic transformation. The purpose of this article was to report on current improvements in the use of plant breeding techniques to orchid tissue culture to increase orchid quality. This article referenced significant scientific publications. Orchid tissue culture using mutation induction is used to develop improved variations. Giving elicitors can cause orchid plants to conserve themselves and become more resistant to diseases. The required transgene can be introduced into the genome of cultivated orchids via Agrobacterium. These advancements have the potential to revolutionize orchid cultivation.

Keywords: biotechnology, orchid, tissue culture

Food Safety Study of Petis Crackers in Kendal Regency, Central Java

2025-01-03T11:08:03+07:00

Food safety is a science that deals with preparing, managing, and storing food or beverages to be safe from physical, biological, and chemical contamination. The processing of petis (condiments of fermented fish or shrimp) crackers is one of the categories of SMEs in Kendal Regency, Central Java. The study aimed to evaluate the heavy metals of iron (Fe), lead (Pb), and other chemical features and to survey the processing of petis crackers. This is a descriptive study of an observational nature with a quantitative approach, especially by doing laboratory observations. The study also carried out qualitative observations using questionnaires regarding the manufacturing of petis crackers. Petis is food or items cooked in a thick, clayey, and elastic condiment group. The results showed that Fe levels vary from 48.00 to 82.00 mg/kg and Pb from 40.00 to 50.00 mg/kg. The average chemical properties of the petis crackers are as follows: 2.45% ash, 13.27% moisture, 3.13% protein, 0.15% fat, and 81.0%carbohydrate. The lead content surpasses the maximum limit of the standard set by the BPOM (The Indonesian Food and Drug Supervisory Agency).

Keywords: food safety, heavy metal, Kendal, petis crackers

Application of Lemongrass Oil in Chitosan as Antimicrobial During Storage of Crystal Guava Fruit

2024-12-30T22:47:40+07:00

Guava crystal is a fruit that has a high selling value. One of the obstacles to marketing crystal guava fruit is the fast decay process. Many factors cause fruit to rot quickly, including microbial contamination post-harvesting. This study evaluates the effectiveness of adding lemongrass oil in chitosan coatings to protect crystal guava from microbiological damage during storage. The fruit is coated with 1% chitosan and added to lemongrass oil according to the treatment. The study used a completely randomized design with three replications. The treatment tested included 0.0, 0.1, 0.3, and 0.5% lemongrass oil. The content of lemongrass oil compounds was analyzed using gas chromatography-mass spectroscopy (GC-MS). The antibacterial test was carried out using the disc method. The parameters observed were the total plate count and total fungal count of crystal guava fruit on days 0, 3, 6, 9, 12, 15, and 18 after storage. GC-MS analysis showed that the main content of lemongrass oil is two isomers of citral, i.e., neral (38.54%) and geranial (39.26%). The results showed that the total fungal and plate count increased during storage. Chitosan coating with lemongrass oil more effectively inhibits Staphylococcus aureus than Escherichia coli. Adding 0.3% and 0.5% lemongrass oil in chitosan could restrain the rate of microbes in crystal guava until the 18th day after storage. Chitosan treatment with 0,3% lemongrass oil is recommended to be the best treatment for applying on crystal guava.

Keywords: citral, GC-MS, Psidium guajava L., total plate count, total fungal count

Productivity of IPB-D2 and IPB-D3 Chickens with Repeatability of Newcastle Disease Antibody Titer

2024-12-30T22:49:13+07:00

ND virus causes mortality in poultry. Passively acquired maternal antibodies inhibit immunoglobulin formation. Repeatability is a genetic parameter that determines the inheritance of traits from elders to chicks. IPB-D2 chickens were selected for disease resistance, and IPB-D3 chickens were selected for weight gain. This study aimed to evaluate the productivity of IPB-D2 and IPB-D3 chickens and assess the inheritance of Newcastle Disease (ND) antibody traits in 36 IPB-D3 and 21 IPB-D2 chickens. The T-test was used to compare the group means of the two chicken breeds. Antibody titer measurements were based on the Geometric Mean Titer (GMT). Estimation of ND titer repeatability using within-class correlation. Fertility and hatchability differed significantly (p < 0.05). ND titer of IPB-D2 chicken and IPB-D3 chicken DOC LOG 2 GMT 1.61 ± 1.10 and 1.34 ± 0.95. The antibody titer of IPB-D2 and IPB-D3 chickens at 14 days of age was 1.02 ± 1.20 and 1.37 ± 0.95. The ND titer value in the egg yolk of IPB-D2 chicken was 4.02 ± 1.94, and in IPB-D3 chicken was 3.64 ± 2.54. The results showed the repeatability value of l antibodies in IPB D-2 chickens and IPB D-3 chickens in DOC 0.49±0.30, 0.42±0.33 and 0.39±0.28; 0.25±0.15, respectively. Fertility and hatchability of IPB-D3 chickens were better than those of IPB-D2 chickens. The yolk ND titer of IPB-D2 chickens was higher than IPB- D3 chicken. The ND titer reciprocity of IPB-D2 chickens was higher than that of the IPB-D3 chickens.

Keywords: IPB-D2 Chicken, IPB-D3 Chicken, Newcastle Disease, productivity, repeatability

Hematological Profile of Beef Cattle After Consuming Concentrate Feed Supplemented with Depolarized Katuk Leaf (Fedtugrow®) in Local Farmers

2024-12-31T09:59:30+07:00

Fedtugrow^®is a complete feed containing depolarized katuk (Sauropus androgynous) leaves and is beneficial for enhancing the productivity of both dairy and beef cattle. Depolarization technology in katuk leaves involves the removal of polar compounds from the leaf to eliminate the potential side effects resulting from katuk consumption, such as bronchiolitis obliterans and inhibition of calcium absorption. This technology could eliminate side effects without compromising the efficacy of katuk leaves in increasing milk production and body weight gain. This study aimed to evaluate the efficacy of Fedtugrow^®in promoting the growth of beef cattle and its impact on the health status of the cattle raised on smallholder local farms with distinct characteristics compared to commercial farms. Ten Limousin male cattle entering the fattening phase were divided into a control group that consumed standard concentrate and a treatment group that consumed Fedtugrow^® for three months. Blood was collected at the end of treatment for hematological analysis, including erythrocyte and leukocyte profiles. Cows consuming Fedtugrow^® showed a significantly higher average daily gain and lower stress index than the control. Furthermore, no significant differences were observed in the hematological profile, such as total erythrocyte count, hemoglobin level, hematocrit, and total leukocytes. This study showed the ability of Fedtugrow^® as a growth promoter without negatively affecting the physiological status of beef cattle raised on smallholder farms.

Keywords: Beef cattle, Fedtugrow^®, hematology, smallholder local farm

The Farmers’ Satisfaction of UPJA Services in Yogyakarta

2025-01-03T14:46:51+07:00

Agricultural Equipment and Machinery Services Business (UPJA) is a rural economic entity that provides services to improve farming equipment and machinery (alsintan). UPJA's good performance will satisfy consumers (farmers). The purpose of this survey was to discover how satisfied farmers were with UPJA services. The method employed was descriptive, with IPA-Kano integrated analysis. The data was gathered through interviews and the distribution of questionnaires to 90 UPJA clients from three classes: Beginner, Developing, and Professional. The results revealed that clients were Quite Satisfied in the Beginner class, Very Satisfied in the Developing class, and Satisfied in the Professional class. The Beginner class's priorities for increasing service were the diversity of machinery, its adequacy, and the number of staff. In the Developing and Professional classes, advertising attributes, personal protective equipment utilization, and team member uniforms were prioritized for service improvement.

Keywords: agricultural tools and machinery, farmers’ satisfaction, UPJA

Selection of Lignin Degrading Bacteria from Soil, Kitchen Waste, Leaf Litter, and Cow Dung Based on Lignin Peroxidase and Manganese Peroxidase Activities

2025-01-02T10:09:10+07:00

Lignin is a complex chemical heterogeneous polymer that forms a physical barrier to lignocellulose's biological and chemical hydrolysis, making lignocellulosic biomass challenging to degrade. Ligninolytic microorganisms play an essential role in lignin degradation by producing extracellular enzymes. Lignin peroxidase and manganese peroxidase are enzymes that play a role in lignin degradation. Forty-one bacterial isolates have been isolated from soil, kitchen waste, leaf litter, and cow dung. However, the ligninolytic activity of these isolates has yet to be discovered. This research aimed to determine the ligninolytic ability of bacteria isolated from soil, leaf litter, kitchen waste, and cow dung based on lignin peroxidase and manganese peroxidase activity. The study was conducted stages: isolate recultured, qualitative and quantitative testing of lignin peroxidase activity based on degradation of methylene blue dye, and qualitative and quantitative testing of manganese peroxidase activity based on degradation of phenol red dye. A total of four bacterial isolates from soil (Tn9, Tn14, Tn16, and Tn17) and two bacterial isolates from cow dung (KS2 and KS5) showed qualitative and quantitative lignin peroxidase activity. Manganese peroxidase activity was also shown by four isolates from soil (Tn2, Tn6, Tn14, and Tn16), one isolate from kitchen waste (SD1), and one isolate from cow dung (KS5) both qualitatively and quantitatively. The nine bacterial isolates that showed lignin peroxidase and manganese peroxidase activity have potential as lignin-degrading biological agents.

Keywords: bacteria, ligninolytic, peroxidase

Red Dragon (Hylocereus polarizes) Fruit Peel Herbal Tea with The Addition of Cinnamon, Ginger, and Orange Zest

2025-01-04T01:27:30+07:00

The peel of dragon fruit is a waste. The meat of dragon fruit is the most frequently consumed; the peel is rarely used and is only wasted. The natural antioxidant lycopene may be found in the skin of dragon fruit. Dragon fruit skin can be processed to make herbal tea. This study aims to ascertain the yield, moisture content, and organoleptic testing to produce dragon fruit peel tea and the effects of adding cinnamon, ginger, and lemon zest. The research treatments included lemon zest at 40%, ginger at 14%, and cinnamon at 6% concentrations. Three treatment levels and three replications were employed in the fully randomized design (CRD) for data analysis. According to the study's findings, the best way to treat a dragon fruit peel herbal tea bag that contains 6% cinnamon powder was to know how adding cinnamon, ginger, and lemon zest to the process of making dragon fruit peel tea affects the yield, moisture content, and organoleptic test. According to the respondents' liking, the taste test scored 3.91%, scent 3.88%, and color 4.45% (loved) (liked). Based on SNI 3836.2013 about tea quality criteria, which stipulates that the maximum moisture content included in tea powder is 8%, a yield of 8.64%, and a moisture content of 0.48% satisfy the tea quality requirements.

Keywords: dragon fruit peel, cinnamon, ginger, lemon zest, red dragon fruit peel tea

Management of Cocoa Plant Pests & Diseases in East Luwu Regency

2024-12-30T22:53:37+07:00

East Luwu Regency is one of South Sulawesi's regencies with potential in the plantation sector, especially cocoa plants, with a production of 12,250 tons/year. Cocoa productivity has yet to be achieved optimally due to the lack of care and maintenance carried out by farmers, which increases the intensity of pest & disease attacks. This study evaluates farmers' knowledge, attitudes, and actions in managing cocoa plants and plant pathogens in East Luwu Regency. This study was conducted through direct interviews using a structured questionnaire sent to 50 farmers in Burau and Wotu Districts, East Luwu Regency. Respondents were selected purposively, considering that they were easy to find and the location of the plantation was easy to reach. Data are presented in tabular, graphical, and descriptive forms in Microsoft Excel to explain the relationship between farmers' knowledge, attitudes, and actions in managing cocoa VSD disease. The results showed that most of the respondent were active farmer groups. Pests & diseases are problems farmers face in cocoa cultivation. Most farmers used the MCC 02 clone, and the planting distance was 3´3 m. The diseases most commonly found in farmers' cocoa fields include VSD, fruit rot, upas fungus, and stem cancer. Pest & disease control was done through chemical pesticides and pruning (cultivation techniques). Cocoa farmers in Burau and Wotu Districts routinely carry out pruning to control disease in cocoa fields. Farmers prune cocoa plants to remove diseased branches and stimulate the growth of flowers and fruit.

Keywords: action, attitude, knowledge, questionnaire

Combination Effect of NK and P Fertilizers on Soil Available-K, K Absorption, and Sweet Corn Productivity in Inceptisols

2024-12-31T22:50:25+07:00

One factor affecting sweet corn's (Zea mays saccharata Sturt.) productivity refers to soil fertility and proper fertilization. This study aimed to determine the optimal combination of NK and P fertilizer doses to enhance the growth and yield of corn grown on Inceptisols. This research was conducted at the Soil Chemistry and Plant Nutrition Experimental Field, Faculty of Agriculture, Universitas Padjadjaran. The Randomized Block Design consisted of 10 treatments with three replicates each. The treatments included: A, control; B, standard NPK; C, ¼ dose NK + 1 P + ½ N; D, ½ dose NK + 1 P + ½ N; E, ¾ dose NK + 1 P + ½ N; F, 1 dose NK + 1 P + ½ N; G, 1¼ dose NK + 1 P; H, 1 dose NK; I, ½ dose NK + ½ single N,P,K; and J, ¾ dose NK + ¼ single N,P,K. The results showed that the combination of NK and P fertilizers significantly affected the growth and yield of sweet corn. The treatment with ¾ NK + 1 P + ½ N had a notable impact on cob weight (0.33 kg/cob), cob diameter (5.05 cm), and cob length (21.2 cm). This treatment also increased K absorption to 34.49, available soil K to 2.45 cmol kg^-1, and the sweetness level of corn to 13.56%. This study provides new recommendations for corn fertilization to improve the growth and yield on Inceptisols.

Keywords: optimal fertilizer dosage, corn growth, corn productivity, nutrient uptake

Use of Sphingomonas yunannensis to Improve Soil Drought Stress in Chili Plants

2024-12-30T22:55:25+07:00

The availability of water plays an important role in plant growth. However, water availability depends on the climate and irrigation channels; therefore, there is little water available for plants during the dry season. Bacteria found in soil can produce exopolysaccharides to survive under extreme land conditions, namely, during drought conditions. The research objectives were to (1) isolate and select bacteria originating from dry land for use on chili plants and (2) determine the effect of water supply frequency and select soil bacteria on chili plants. The experiment consisted of two stages. (1) Bacterial selection and characteristics, which included exopolysaccharide bacteria selection on specific ATCC No. media. 14; pathogenicity test (hypersensitivity and hemolysis); characterization and biochemical testing including pH, temperature, salinity, oxidation, and catalase; bacterial functional tests (P and K solvents and nitrogen-fixing); and (2) tests of chili plants in the greenhouse. The treatment consisted of two factors: (a) application of selected bacteria, (b) frequency of water application (every 1, 2, 3, and 5 days), and (3) molecular identification of selected bacteria. The results showed that the best growth of chili plants was obtained by treating them with bacteria and watering them every other day. Molecular identification demonstrated that the selected bacteria was Sphingomonas yunannensis, which can grow under environmental conditions affected by drought.

Keywords: exopolysaccharides, drought, Sphingomonas yunannensis, chili plants

Carcass and Chemical Quality of IPB D1 Chicken Meat in Free-range and Intensive Systems

2024-12-30T22:57:37+07:00

IPB D1 chicken is a local chicken resulting from crossing pelung, sentul, kampung, and parent stock broiler strain Cobb chickens. IPB D1 chicken was released through a decree by the Ministry of Agriculture with No. 693/KPTS/PK. 230.M/9/2019. Free-range is a system of raising farm animals, including chickens, by providing access to outdoor running (pasture) to exercise, find more feed, and be exposed to more oxygen. This study analyzed the carcass percentage, edible carcass, non-edible carcass, and chemical quality of IPB D1 chickens raised in a free-range system. A total of 50 IPB D1 male chickens were raised in free-range and intensive systems for four weeks. The microclimatic data were analyzed descriptively. Meanwhile, carcass percentage and physicochemical and organoleptic properties of IPB D1 chicken meat were subjected to a t-test. Free-range and intensive systems showed no significant effects on the carcass, commercial cuts, edible and non-edible percentages, and MDA quality traits of IPB D1 male chicken thigh meat. The cholesterol content of IPB D1 thigh meat in a free-range system was significantly lower than in an intensive system

Keywords: carcass, free-range, IPB D1 chicken, cholesterol, MDA

Increasing Participation of Independent oil Palm Smallholders in Farmer Group Institution

2025-01-22T12:06:27+07:00

Farmer groups play an important role in the palm oil industry in terms of access to capital, production facilities, marketing, market information, and learning vehicles. However, the participation of independent smallholders in institutions, especially farmer groups, is still very limited because of the limited knowledge and awareness of farmers about the important role of these institutions. The aim of this research is to formulate an increase in the participation of independent oil palm smallholders in farmer groups in the Sambas Regency, West Kalimantan. The research used a combination of qualitative and quantitative methods with a SWOT-AHP analysis of 33 experts and ordinary informants from the government, farmer group officials, companies, wholesalers, and farmers. The results show that institutional capacity building was selected as a strategic priority for increasing farmer participation. Three efforts must be made to increase institutional capacity: compiling institutional norms/rules, holding regular meetings, and compiling group administration books.

Keywords: farmer group institution, participation, oil palm smallholder