Depth of soil compaction predominantly affects rice yield reduction by reproductive-stage drought at varietal screening sites in Bangladesh, India, and Nepal

Depth of soil compaction predominantly affects rice yield reduction by reproductive-stage drought at varietal screening sites in Bangladesh, India, and Nepal

AIMS: Drought is the major constraint to rainfed rice productivity in South Asia, but few reports provide detailed characterization of the soil properties related to drought stress severity in the region. The aim of the study was to provide a compilation of drought breeding network sites and their r...

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Veröffentlicht in:Plant and soil. - 1998. - 417(2017), 1 vom: 24., Seite 377-392
1. Verfasser: Singh, Suresh Prasad (VerfasserIn)
Weitere Verfasser: Jain, Abhinav, Anantha, M S, Tripathi, Santosh, Sharma, Subarna, Kumar, Santosh, Prasad, Archana, Sharma, Bhawana, Karmakar, Biswajit, Bhattarai, Rudra, Das, Sankar Prasad, Singh, Shravan K, Shenoy, Vinay, Chandra Babu, R, Robin, S, Swain, Padmini, Dwivedi, J L, Yadaw, Ram Baran, Mandal, Nimai P, Ram, T, Mishra, Krishna Kumar, Verulkar, S B, Aditya, Tamal, Prasad, Krishna, Perraju, Puvvada, Mahato, Ram Krishna, Sharma, Sheetal, Anitha Raman, K, Kumar, Arvind, Henry, Amelia
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2017
Zugriff auf das übergeordnete Werk:Plant and soil
Schlagworte:Journal Article Drought Rainfed lowland Rice Soil
Beschreibung
Zusammenfassung:AIMS: Drought is the major constraint to rainfed rice productivity in South Asia, but few reports provide detailed characterization of the soil properties related to drought stress severity in the region. The aim of the study was to provide a compilation of drought breeding network sites and their respective levels of drought stress, and to relate soil parameters with yield reduction by drought
METHODS: This study characterized levels of drought stress and soil nutrient and physical properties at 18 geographically distributed research station sites involved in rice varietal screening in Bangladesh, India, and Nepal, as well as at farmers' fields located near the research stations
RESULTS: Based on soil resistance to penetration profiles, a hardpan was surprisingly absent at about half of the sites characterized. Significant relationships of depth of compaction and yield reduction by drought indicated the effects of soil puddling on susceptibility to cracking, rather than water retention by hardpans, on plant water availability in this region. The main difference between research stations and nearby farmers' fields was in terms of soil compaction
CONCLUSIONS: These results present an initiative for understanding the range of severities of reproductive-stage drought stress in drought-prone rainfed lowland rice-growing areas in South Asia
Beschreibung:Date Revised 09.04.2022
published: Print-Electronic
Citation Status PubMed-not-MEDLINE
ISSN:0032-079X
DOI:10.1007/s11104-017-3265-2