Yield and Economic Analysis of Rice (Oryza sativa L.) as Influenced by the Nano Forms of Nitrogen and Zinc
Shagam Lahari *
Department of Agronomy, College of Agriculture, Rajendranagar, Hyderabad, PJTSAU, Hyderabad, Telangana, India.
S. A Hussain
Department of Agronomy, College of Agriculture, Rajendranagar, Hyderabad, PJTSAU, Hyderabad, Telangana, India.
Y. S. Parameswari
Department of Agronomy, College of Agriculture, Rajendranagar, Hyderabad, PJTSAU, Hyderabad, Telangana, India.
S. Harish Kumar Sharma
Department of Soil Science and Agricultural Chemistry, WTC, Rajendranagar, Hyderabad, PJTSAU, Hyderabad, Telangana, India.
*Author to whom correspondence should be addressed.
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.
Keywords: Foliar application, rice, nano nitrogen, nano zinc, yield, economics