Mahender Singh, Monika Banotra1, Charu Sharma, Rohit Sharma, Veena Sharma and B.C Sharma
Abstract
Field experiments were conducted for three consecutive years from kharif 2018-20 at research field of Agro meteorology Section, Division of Agronomy, Skuast Jammu, to evaluate the effect of different sowing dates and Varieties of rice under direct sowing. The experiment was conducted in randomized block design with three dates of sowing ââ¬Ë1st Juneââ¬â¢, ââ¬Ë16th Juneââ¬â¢ and ââ¬Ë30th Juneââ¬â¢ and three rice varieties ââ¬ËPusa 1121ââ¬â¢, ââ¬ËBasmati-370ââ¬â¢ and ââ¬ËSRJ -129ââ¬â¢ during all the three kharif seasons. The pooled results of three year study revealed that amongst the different sowing dates, significantly highest plant height, grain and straw yield of rice were recorded with ââ¬Ë1st Juneââ¬â¢ sowing date and highest heat units, i.e accumulated GDD, Heliothermal units and photo thermal units to complete different phenophases were recorded with early sowing ââ¬Ë1st Juneââ¬â¢ date followed by timely sowing ââ¬Ë16th Juneââ¬â¢ and late sowing ââ¬Ë30th Juneââ¬â¢ where as among the different varieties significantly highest plant height, grain and straw yield of rice were recorded with ââ¬ËBasmati-370ââ¬â¢ where as significantly lowest growth and yield parameters were recorded with variety ââ¬ËPusa 1121ââ¬â¢. ââ¬ËSRJ -129ââ¬â¢ was significantly different from other two varieties and highest heat units, i.e accumulated GDD, Heliothermal units and photo thermal units to complete different phenophases were recorded with Variety ââ¬ËBasmati- 370ââ¬â¢ followed by Pusa-1121 and SRJ-129 under different irrigated conditions of Union territory of Jammu and Kashmir.