@article{Yulianti_Santosa_Susila_2020, title={Panen Pucuk dan Buah pada Tanaman Leunca (Solanum nigrum L.) yang Dipupuk dengan Dosis Nitrogen Berbeda}, volume={25}, url={https://journal.ipb.ac.id/index.php/JIPI/article/view/29254}, DOI={10.18343/jipi.25.1.52}, abstractNote={<p>The increasing popularity of leaf and fruit of African nightshade as vegetables in Indonesia stimulates farmers to harvest both leaf and fruit from single plant alternately; the yield is presumably affected by fertilizer rate, e.g., nitrogen. The present study aimed to evaluate such hypothesis through evaluation of plant production, N absorption, and its status. Seedlings were treated with five N levels, i.e., 0, 90, 180, 270, and 360 kg/ha in Leuwikopo Experimental Farm, IPB Bogor, Indonesia. The results revealed that leaf and fruit productions were sensitive to nitrogen level. Leaf and fruit productions had quadratic correlation to N levels, i.e., <em>r</em><sup> 2</sup>=0.9671 and <em>r</em><sup> 2</sup>=0.9483 with optimum dosages as 304.8 kg/ha and 336.5 kg/ha, respectively. Proper N application is important for both leaf and fruit productions because nitrate level in leaf had quadratic relationship (<em>r</em><sup> 2</sup>=0.5264) and it has a linear relationship in fruit production (<em>r</em><sup>2</sup>=0.9587) by increasing N level from 90 to 360 kg N/ha. From the total fresh mass leaves and fruits harvested, the optimum N for the best alternate harvesting was 271.1 kg/ha (<em>r</em><sup> 2</sup>=0.9644).</p> <p>Keywords: African nightshade, intercropping, N uptake, nitrate status, photosynthetic rate</p&gt;}, number={1}, journal={Jurnal Ilmu Pertanian Indonesia}, author={YuliantiNani and Santosa, Edi and SusilaAnas Dinurrohman}, year={2020}, month={Jan.}, pages={52-59} }