National Academy of Agricultural Sciences (NAAS)
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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcmas@gmail.com / submit@ijcmas.com Editor-in-chief: Dr.M.Prakash Index Copernicus ICV 2018: 95.39 NAAS RATING 2020: 5.38 |
This study evaluates the effect of partial root zone drying (PRD) and deficit irrigation (DI) strategies on crop yield and water use efficiency of the furrow irrigated rabi maize under the North Bihar Condition. The experiment was conducted at DRPCAU, experimental farm. The treatments were (1) control (CI) in which irrigation water was applied to both sides of root system; (2) Deficit irrigation (DI50, DI75) in which 50% and 75% irrigation water of CI supplied to both sides of the root system; (3) partial rootzone drying (1PRD, 2PRD), 1PRD with half of the root system exposed to soil drying and other half kept well-watered with 50% irrigation water of CI, and 2PRD with 50% irrigation water of CI supplied, half to fixed side of the root system and (4) Rainfed (No irrigation). Irrigation significantly (P ≤ 0.05) influenced the yield status of maize. Maize yield increases with the increase in level of irrigation. DI50 (T3), 1 PRD (T4) and 2 PRD (T5) significantly reduced yield, compared to CI treatments (T1). The reduction of yield in treatment T4 compared to control was 9.50 %. But the other side of the analysis suggests that in terms of yield treatment 1 PRD (T4) outperformed the treatments T3 (DI -50) and T5 (2 PRD). The highest irrigation water use efficiency (WUE) was found in treatment T4 (1 PRD) with a value of 269.38 kg/ha-cm, and the lowest one was found in treatment T1 (FI) as 148.8 kg/ha-cm. The statistical analysis of the data revealed that water use efficiency is significantly superior in treatment T4 compared to rest of the treatments. Water use efficiency of maize decreased with increase in irrigation levels for all the treatments of furrow irrigation system.
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