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Paired-row planting and furrow irrigation increased light interception, pod yield and water use efficiency of groundnut in a hot sub-humid climate

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Title Paired-row planting and furrow irrigation increased light interception, pod yield and water use efficiency of groundnut in a hot sub-humid climate
Not Available
 
Creator Mandal, K.G.,
Thakur, A.K. and Mohanty, S
 
Subject Groundnut Irrigation Planting method Evapotranspiration Water use efficiency Yield-ET functions
 
Description Not Available
Increasing scarcity of irrigation water calls for enhancing water use efficiency (WUE) of crops, and improved
planting method is a potential option. Field experiments were conducted for 3 years to evaluate effects of three
planting methods of groundnut viz. flat-bed, ridge and furrow and paired-row at four irrigation regimes viz. 1, 2,
3 and 4 irrigations. Ridge and furrow, and paired-row methods resulted in an increase in pod yield by 13 and
17% and irrigation water saving by 26.7 and 41.7%, respectively compared with flat-bed method. Although
highest yield level was similar in ridge and furrow and paired-row methods with four irrigations, irrigation water
was 28.4% less in the latter than the former. In the three irrigation x paired-row method, pod yield reduced by
only 3.8%, whereas water saving was 26.9% compared to the four irrigations x paired-row method. Better root
dry weight, greater intercepted photosynthetically active radiation, chlorophyll fluorescence (Fv/Fm and ФPS II)
and rate of leaf photosynthesis contributed to higher yield and nutrient uptake under paired-row at higher
irrigation regime than traditional flat-bed method. Although evapotranspiration (ET) increased with higher irrigation
regimes; ridge and furrow and paired-row method decreased ET by 13 and 21%, and increased crop
WUE by 32.6 and 48%, respectively over flat-bed. The pod yield (Y)-ET functions were found linear; it has been
revealed that the crop will achieve maximum pod yield (2109 kg ha−1) with 359mm ET under paired-row
planting. Computed elasticity of water production and crop yield response factor could well be used for making
irrigation decisions. This field study confirmed that paired-row planting and furrow irrigation had increased pod
yield, saved water and enhanced WUE of groundnut under hot sub-humid conditions
Not Available
 
Date 2019-11-02T08:03:29Z
2019-11-02T08:03:29Z
2018-12-15
 
Type Article
 
Identifier Mandal, K.G., Thakur, A.K. and Mohanty, S. 2019. Paired-row planting and furrow irrigation increased light interception, pod yield and water use efficiency of groundnut in a hot sub-humid climate. Agricultural Water Management, 213: 967-977.
ISSN: 0378-3774
http://krishi.icar.gov.in/jspui/handle/123456789/24284
 
Language English
 
Relation Not Available;
 
Publisher Elsevier