Author(s):

Rajan Chaudhari, SR Mishra, Ashish Singh, Devraj Singh and Atul Yadav

Abstract: Mustard is one of the most important oilseeds crop in India, which plays a major role in supplementing A field experiment was conducted during <em>kharif season </em>of 2014 at N.D. University of Agriculture and Technology, Kumarganj, Faizabad (U.P.) in sandy loan soil. The experiment consisted of 9 treatment combinations comprised of three transplanting dates <em>viz</em>., July 5 (D₁), July 15 (D₂) and July 25 (D₃) and three varieties viz., Sarjoo-52 (V₁), NDR-359 (V₂) and Swarna (V₃). It was observed that<strong><em> </em></strong>different phenophases of rice markedly varied with not only dates of transplanting but also different weather variables which ultimately creates the different crop growing environment to harvest the yield accordingly Among the three varieties it was also observed that different phenophases has taken higher days in V₁ as compare to V₂and in different days of transplanting It was observed that<strong><em> </em></strong>different phenophases of rice markedly varied with not only dates of transplanting but also different weather variables which ultimately creates the different crop growing environment to harvest the yield accordingly. As panicle initiation during 10-15 Sept (transplanted on July 15) recorded the highest yield as compared to 2–7 September PI stage. Variation in daily mean temperature &amp; solar radiation during reproductive and ripening period also has marked affect. Highest yield to the tune of 48.57 q/ha was obtained when cumulative BSS during panicle initiation to dough phases in the area exist 199 hrs. Heat use efficiency (HUE) at vegetative, reproductive and ripening stage on no. of tillers and effective tillers showed that both effective tillers and total no. of tillers/m² increased with increasing HUE in all the growth phases of rice. Among varieties Swarna (V₃) was harvested maximum<strong> </strong>yield &amp; yield contributing characters in early transplanted environment (D₁) followed by V₂ than V₁

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