Response of upland irrigated rice (Oryza sativa L.) varieties to irrigations

Abstract

A field investigation entitled Response of upland irrigated rice varieties to irrigations” was conducted at Plot No. 66, Research Farm of Department of Agronomy, Dr. Panjabrao Deshmukh Krishi Vidyapeeth, Akola during the Kharif season of 2016-2017. The main plot treatments were: I1- Irrigation at 0.6 IW/CPE, I2- Irrigation at 0.8 IW/CPE, I3-Irrigation at 1.0 IW/CPE and I4-Irrigation at 1.2 IW/CPE and in the subplots, varietal trial was carried out, which consisted of four varieties: V1- Variety Avishkar V2- Variety Parag, V3- Variety Sindewahi-1 and V4- Variety PBNR-03-02. The experimental results revealed that the rice varieties performed best at 1.2 IW/CPE, in which irrigation water was provided when cumulative pan evaporimeter reading reached 50 mm. The yield attributes, grain yield, straw yield and the biological yield were observed to be the highest with 1.2 IW/CPE. Among the varieties, the variety Avishkar, was found to perform the best in terms of yield attributes like number of panicles, weight of panicle, number of filled spikelets and test weight which resulted in highest grain yield in the variety. All the varieties responded well to irrigations and the maximum yield and other characteristics were observed at higher irrigation levels. The variety Avishkar was found to perform the best under the upland irrigated conditions with 50 cumulative pan evaporation.