Yield and Economic Analysis of Rice (Oryza sativa L.) as Influenced by the Nano Forms of Nitrogen and Zinc

Abstract

A field experiment was conducted at College Farm of College of Agriculture located in Rajendranagar, Hyderabad, Telangana, conducted research during the rabi season of 2020-21, focusing on the effects of nano nitrogen and nano zinc in sandy loam soils. The experimental design employed was a randomized block design (RBD), comprising ten distinct treatments, each replicated three times. The treatments viz., Control (T1), 100% N through urea (T2), T2 + soil application of ZnSO4 at transplanting (T3), T2 + foliar spray of 4 ml L-1 nano nitrogen at tillering and before panicle initiation stage (T4), T2 + foliar spray of 2 ml L-1 nano zinc at tillering and before panicle initiation stage (T5), T2 + foliar spray of 4 ml L-1 nano nitrogen at tillering and before panicle initiation stage + foliar spray of 2 ml L-1 nano zinc at tillering and before panicle initiation stage (T6), 75% N through urea + foliar spray of 4 ml L-1 nano nitrogen before panicle initiation stage. (T7), T7 + foliar spray of 2 ml L-1 nano zinc at tillering and before panicle initiation stage (T8), 50% N through urea + foliar spray of 4 ml L-1 nano nitrogen at tillering and before panicle initiation stage (T9), T9 + foliar spray of 2 ml L-1 nano zinc at tillering and before panicle initiation stage (T10). The results indicated that the highest grain yield (6810 kg ha-1) was registered with treatment T10 which is on par with T9. The highest net returns (86649 Rs ha-1) and B:C ratio (2.99) were noticed by the application of T10.