EFFECT OF MICRO ENVIRONMENTS ON YIELD ATTRIBUTES AND YIELD OF PROMINENT WHEAT VARIETIES OF BIHAR
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Date
2023
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RPCAU, Pusa
Abstract
A research trial on "EFFECT OF MICRO ENVIRONMENTS ON YIELD ATTRIBUTES AND YIELD OF PROMINENT WHEAT VARIETIES OF BIHAR" was carried out in the Rabi season of 2022–2023, at the research farm, DR. RPCAU, Pusa, Samastipur, Bihar (India). The experimental design utilized a split-plot arrangement, incorporating five distinct sowing dates in the primary division i.e. main plot and three varieties in the secondary division i.e. subplot, and three replications of each treatment. The five dates of sowing were D₁:7th November, D₂: 17th November, D₃: 27th November D₄: 7th December and D5: 17th December and three varieties i.e. V₁: HD 2967, V₂: DBW 187 and V₃: Rajendra Genhu-3. Five sowing dates reflect various wheat-growing micro-environments that are imposed by distinct sowing dates that cover the whole sowing window. The primary objectives were to examine the effects of microenvironments on wheat production and productivity. Additionally, to determine the ideal sowing window for wheat cultivation under the changing climate. Last but not least, economics were assessed based on various sowing dates and varieties.
The combined impact of D₂V₁ i.e. HD 2967 sown on 17th November resulted to have maximum growth in terms of plant height, no. of tillers/m2, dry matter accumulation, CGR etc. Thereby, resulted in gross returns (108034 `/ha), net returns (66750 `/ha) and benefit : cost ratio (2.62) followed by D₁V₁ i.e. HD 2967 sown on 7th November and D₂V₂ i.e. DBW 187 sown on 17th November . However treatment combination D5V₁ i.e. HD 2967 sown on 17th December recorded lowest gross returns (74310 `/ha), net returns (33026 `/ha) and benefit : cost ratio (1.8). On the other side, in case of late sowing Rajendra Genhu-3 outperformed than the other two varieties in both growth and yield characteristics. This study suggests that the optimum sowing window for wheat cultivation is 17th November followed by 7th November and HD 2967 can be chosen for higher yield and productivity followed by DBW 187. And lastly, for late sowing purpose Rajendra Genhu-3 can be recommendable.