Effect of nano DAP on growth and yield of safflower (Carthamus tinctorius L.)

A field experiment was conducted at ICAR- Krishi Vigyan Kendra, Hagari during rabi, 2024 to study the effect of nano DAP on growth and yield of safflower. The experiment was laid in RCBD with nine treatments and replicated thrice. The results revealed that 100% RDF combined with foliar spray of nano DAP @ 2 ml l-1 at 30 and 45 DAS recorded significantly higher growth parameters viz., plant height, number of leaves, number of primary branches, number of secondary branches, leaf area per plant, leaf area index, dry matter production and its accumulation in different plant parts, yield parameters viz., number of capitulum plant-1, number of seeds capitulum-1, seed weight plant-1, seed yield (1675 kg ha-1), stover yield (3210 kg ha-1). Further, it was found on par with 75% RDF combined foliar spray of nano DAP @ 2 ml l-1 at 30 and 45 DAS. Whereas, lower growth and yield parameters were recorded with foliar spray of nano DAP @ 4 ml l-1 at 30 DAS.