Effect of soil moisture, evapotranspiration, stress degree days on pod yield of groundnut (Arachis hypogaea L)

GULED, P. M.; Shekh, A. M.; Patel, H. R.; Pandey, Vivek

doi:10.54386/jam.v15i2.1460

Cited by 2 publications

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“…In Anantapur, the yield levels after 75 percent of PASM declined mainly due to heavy soil type and excessive rainfall during the later stages of the crop, making poor pod development (Kumar et al, 2012). However, the overall soil moisture content during the total crop period was also significantly and positively correlated with pod yield (Guled et al, 2013) in Bangalore.…”

Section: Groundnutmentioning

confidence: 99%

Re-evaluating soil moisture-based drought criteria for rainfed crops in peninsular India

Bal,

Shivaramu,

Vijaya Kumar

et al. 2024

Front. Environ. Sci.

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Background: Peninsular India, being completely under the influence of monsoonal climate, suffers crop yield variability due to rainfall distribution-induced soil moisture constraints. Timely and appropriate assessment of this rainfall and soil moisture-induced crop yield variability serves as a key for exemplary relief assistance. Per cent available soil moisture (PASM) is one among several drought declaration indices followed by stakeholders in India for declaration of drought, needs re-evaluation as the existing criteria in unable to capture the yield loss due to ineffective classification of PASM categories. This study attempts to revise the agricultural drought classes by PASM based on relationships established between yield of major rainfed crops of the study region and PASM.Methods: Analysis of yield variability due to PASM was carried out based on long term observations in experiments conducted at five dry farming locations (Akola, Parbhani, Kovilpatti, Ananthapuramu and Bengaluru) of peninsular India. The average yield for each category of PASM was calculated and tabulated for regression analysis. The PASM versus yield in each group was correlated and regression equations were developed if significant positive correlations were established.Results: The range of available soil moisture to obtain at least 50 percent of optimum yield in cereals (maize: 26 and finger millet: 52.9 PASM), pulses (pigeon pea: 37.2 PASM), oilseeds (soybean: 26.8 to 30.5, groundnut: 53.8 to 61.7 PASM) and commercial crops (cotton: 26.3 PASM) was 26–61 percent.Conclusion: The revised PASM-based drought classes (0–50 severe; 51–75 mild and 76–100 no drought) would help in drought declaration and precise identification of drought-hit areas for meaningful relief assistance. However, there is further investigation is needed to include a soil component for further fine-tuning of the criteria.

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Section: Groundnutmentioning

confidence: 99%

Re-evaluating soil moisture-based drought criteria for rainfed crops in peninsular India

Bal,

Shivaramu,

Vijaya Kumar

et al. 2024

Front. Environ. Sci.

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Soil moisture induced yield variability in major crops of Karnataka

et al. 2022

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South interior Karnataka, being a major rainfed zone contributing to production of pigeonpea, finger millet,groundnut, etc., suffers from severe yield instability due to dependency on rainfall. As the distribution of rainfall(spatial and temporal) is erratic, droughts are becoming a common phenomenon and adversely affecting regional crop production by influencing soil moisture availability. Regression studies on per cent available soil moisture (PASM) and yield were conducted based on long-term field observations in 2014–19 on soil moisture and crop yields in finger millet, pigeonpea and groundnut at UAS-GKVK, Bengaluru. The outcomes indicated large yield variability due to minor soil moisture differences. In finger millet, at 58 PASM, 50% (1500 kg/ha) of normal yield was obtained and at 40 PASM, only 25% of normal yield was obtained. In pigeonpea, the crop yield recorded at 25 PASM was 8–18% (202–347 kg/ha) of the normal yield. In groundnut 50 PASM gave 41% of normal yield. The outcome indicated different soil moisture requirement for different crops, stressed the need for amending existing non-crop specific PASM ranges for drought declaration. Amendments were brought in by considering different PASM levels in these three crops finger millet: 20–40 as severe, 40–60 as moderate, >60 as no drought; in pigeonpea, 25–30 as severe, 30–60 as moderate, >60 as no drought; in groundnut, 35–50 as severe, 50–70 PASM as moderate, >70 as no drought. Since the practicality of the study was proven, the amendments were given in the drought manual published by ministry of farmers’ welfare.

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Effect of soil moisture, evapotranspiration, stress degree days on pod yield of groundnut (Arachis hypogaea L)

Cited by 2 publications

References 0 publications

Re-evaluating soil moisture-based drought criteria for rainfed crops in peninsular India

Re-evaluating soil moisture-based drought criteria for rainfed crops in peninsular India

Soil moisture induced yield variability in major crops of Karnataka

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