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| DOI | 10.3389/fenvs.2024.1319912 |
| Re-evaluating soil moisture-based drought criteria for rainfed crops in peninsular India | |
| 发表日期 | 2024 |
| EISSN | 2296-665X |
| 起始页码 | 12 |
| 卷号 | 12 |
| 英文摘要 | 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. |
| 英文关键词 | soil moisture; drought declaration; rainfed; dryland farming; PASM |
| 语种 | 英语 |
| WOS研究方向 | Environmental Sciences & Ecology |
| WOS类目 | Environmental Sciences |
| WOS记录号 | WOS:001227548200001 |
| 来源期刊 | FRONTIERS IN ENVIRONMENTAL SCIENCE
 |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/302225 |
| 作者单位 | Indian Council of Agricultural Research (ICAR); ICAR - Central Research Institute of Dryland Agriculture; University of Agricultural Sciences Bangalore; Acharya N. G. Ranga Agricultural University; Tamil Nadu Agricultural University; Indian Council of Agricultural Research (ICAR); ICAR - National Institute of Abiotic Stress Management; Indian Council of Agricultural Research (ICAR) |
| 推荐引用方式 GB/T 7714 | . Re-evaluating soil moisture-based drought criteria for rainfed crops in peninsular India[J],2024,12. |
| APA | (2024).Re-evaluating soil moisture-based drought criteria for rainfed crops in peninsular India.FRONTIERS IN ENVIRONMENTAL SCIENCE,12. |
| MLA | "Re-evaluating soil moisture-based drought criteria for rainfed crops in peninsular India".FRONTIERS IN ENVIRONMENTAL SCIENCE 12(2024). |
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