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Quantification of water productivity and economics of irrigation in summer clusterbean (Cyamopsis tetragonoloba) in hot arid region of India

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Title Quantification of water productivity and economics of irrigation in summer clusterbean (Cyamopsis tetragonoloba) in hot arid region of India
Not Available
 
Creator H M Meena
Priyabrata Santra
R K Singh
 
Subject Arid region
deficit irrigation
economics of irrigation water
water productivity
summer clusterbean
 
Description Not Available
Clusterbean [Cyamopsis tetragonoloba (L.) Taub, cv. RGC 936] is generally grown in
arid parts of India and requires about 650 mm water during its crop growth period.
Keeping in mind the water scarcity in future, performance of this crop has been
assessed under different irrigation levels at the experimental farm of ICAR−Central
Arid Zone Research Institute (ICAR−CAZRI), Jodhpur during summer season of
2015, 2016 and 2017. For this purpose, a specially developed mini−lysimeter was used
with a dimension of 0.50 m × 0.50 m × 0.55 m. The measurement resolution of the
mini−lysimeter was 0.2 mm equivalent soil moisture depth. Four levels of irrigations
were applied in the experiment: 100%, 80%, 60% and 40% of cumulative pan evaporation
(CPE) of 50 mm. It was observed that deficit irrigation levels resulted in decrease
of crop evapotranspiration (ET ) by 19%, 34% and 50% under irrigation levels of 80%,
c 60% and 40% of CPW, respectively over control (irrigation = 100% CPE). However,
the corresponding reductions in yield were 10%, 48% and 67%, respectively. Water
productivity was found highest, 0.35 kg m , at the irrigation level of 80% CPE. Further
the economics of irrigation water application was computed to show the benefits of
deficit irrigation apart from improving water productivity. It was found that for 1
−3 ha−mm irrigation in the experimental field, it costs about ` 28.6. From this study, it
may be inferred that by adopting 20% deficit irrigation level in summer clusterbean
both physical water productivity and economic water productivity can be improved.
Not Available
 
Date 2022-04-07T06:47:53Z
2022-04-07T06:47:53Z
2021-08-01
 
Type Research Paper
 
Identifier Not Available
0970-3349
http://krishi.icar.gov.in/jspui/handle/123456789/71287
 
Language English
 
Relation Not Available;
 
Publisher Indian Journal of Soil Conservation