| Autor: |
YADAV, Rajender Kumar, YADAV, Gajender, MANISHA, RAI, Arvind Kumar, KUMAR, Satyendra, NEHA, PRASAD, Govind, SHARMA, Parbodh Chander, Junya ONISHI, Kazuhisa KODA, Kayo MATSUI, Guenwoo LEE |
| Předmět: |
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| Zdroj: |
Journal of Arid Land Studies; 2024 Supplement, Vol. 34, p29-32, 4p |
| Abstrakt: |
Fluvial landscapes in the dry land parts of the world include soils with large quantities of soluble sodium carbonates and bicarbonates and abundant exchangeable sodium. The Indo-Gangetic alluvial plain (IGP) includes a large proportion of salt-affected soils in India of these 3.78 million hectares are sodic soils. Considering the problem of soil sub-surface sodicity the ICAR-Central Soil Salinity Research Institute (CSSRI), Karnal, and the Japan International Research Centre for Agricultural Sciences (JIRCAS) have con- ducted a farmers' field trial from 2019 to examine the effects of gypsum and rice residue placement by Cut-soiler machine at various lateral spacing on soil sub-surface sodicity and crop yield. The treatments include Cut-soiler assisted sub-surface application of gypsum, rice residue and gypsum + rice residue at 2.5, 5.0 and 10.0 m of lateral spacing. The result shows appreciable temporal and spatial re- duction in sub-surface sodicity and consequently increases in wheat yield during study period (2019-2021). The reduction in soil pH at 0.1 m, 0.4 m, 0.8 m and 1.2 m from Cut-soiler drain was recorded and it was observed that the reduction in soil pH was continuous and consistent from year 2019 to 2021. There was higher reduction in soil pH near to the Cut-soiler drain and this reduction was decreased with increase in distance from Cut-soiler drain. The soil pH reduced by 0.8 units (8.9 to 8.17) at 0.1 m distance in 2021. The soil pH at 0.4 m, 0.8 m and 1.2 m were 8.27, 8.46 and 8.67, respectively in same year. The wheat yield in 2.5 m lateral Cut-soiler drain was 18.3% higher than without Cut-soiler. Sub-surface sodicity management by placement of amendments along with filling material in Cut-soiler drains in turn further helped to increase grain yield of wheat and thus the amelioration effect was continuous and consistent. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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