@article{Rodríguez-Yzquierdo_Pradenas-Aguila_Basso-de-Figuera_Barrios-García_León-Pacheco_Pérez-Macias_2020, title={Effect of doses of nitrogen in the agronomy and physiology of yellow passion fruit}, volume={31}, url={https://revistas.ucr.ac.cr/index.php/agromeso/article/view/36815}, DOI={10.15517/am.v31i1.36815}, abstractNote={<p><strong><span class="CharOverride-2">Introduction.</span></strong> The passion fruit plant is important as fresh fruit and in the agroindustry, since its rich in minerals and vitamins and also has potential for domestic consumption and exportation. It has been shown that nitrogen (N) has an influence on fruit yield but there is no information on the optimal N range for maximum production. <strong><span class="CharOverride-2">Objective. </span></strong>Determine the agronomic, physiological, and phenological response, yield and quality of fruit in the cultivation of parchita passion fruit against different doses of nitrogen. <strong><span class="CharOverride-2">Materials and methods. </span></strong>At the Universidad Central de Venezuela, Maracay, Venezuela from April 2014 to march 2015, passion fruit plants were planted in a completely randomized design, six replicates, and six plants per experimental unit, a control (8 g N plant<span class="CharOverride-3">-1</span> (T1)) was evaluated and three doses of N (100 (T2), 200 (T3) and 300 (T4) g plant<span class="CharOverride-3">-1</span>), an a dose of 50 and 300 g plant<span class="CharOverride-3">-1</span> of P<span class="CharOverride-4">2</span>O<span class="CharOverride-4">5</span> and K<span class="CharOverride-4">2</span>O, respectively were evaluated. The evaluated variables were: plant height, number of leaves, photosynthesis rate (A), transpiration (E), stomach conductance (Gs), chlorophyll index (CI), total leaf N content in doses at flowering and fruiting, yield, and fruit quality. <strong><span class="CharOverride-2">Results.</span></strong> Higher doses of N obtained higher values in height, number of leaves, plant precocity, chlorophyll index, net photosynthesis, and foliar N content and lower values in T1. The variables Gs, A and E, did not show significant differences between the treatments. A 55 % yield reduction was obtained in the control treatment compared to the 200 g N plant<span class="CharOverride-3">-1</span> treatment which obtained the highest yield. The average fruit weight was significantly higher in T3. <strong><span class="CharOverride-2">Conclusion.</span></strong> The best nitrogen dose in passion fruit plants was 200 g N plant<span class="CharOverride-3">-1</span>.</p>}, number={1}, journal={Agronomía Mesoamericana}, author={Rodríguez-Yzquierdo, Gustavo Adolfo and Pradenas-Aguila, Héctor Eduardo and Basso-de-Figuera, Carmen Amalia and Barrios-García, Marta and León-Pacheco, Rommel Igor and Pérez-Macias, Mercedes}, year={2020}, month={Jan.}, pages={117–128} }