Effect of nitrogen and phosphorus levels on growth and yield of safflower (Carthamus tinctorius L.)

A field research trial was conducted to study “Effect of Nitrogen and Phosphorus levels on growth and yield of Safflower (Carthamus tinctorius L.)” at Crop Research Farm, Naini Agriculture Institute, Department of Agronomy, Sam Higginbottom University of Agriculture, Technology and Sciences, Prayagraj (U.P.) during the period of Rabi season of 2020-21. The experiment was carried out in a randomized block design comprising of nine treatments of three levels of Nitrogen (30, 40 and 50 kg N/ha) and Phosphorus (40, 50 and 60 kg P kg/ha) which were replicated three times. The result revealed that growth and yield attributes of safflower ware increased through successive increases in nitrogen and phosphorus levels. The application of 50 kg nitrogen/ha + 60 phosphorus kg/ha reported significantly maximum plant height (102.93 cm), dry matter accumulations (41.17 g), seeds per capitulum (29.53), capitulum per plant (24.50), seed yield (1.57 t/ha), and stover yield (4.19 t/ha) was found in treatment T9.