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Irrigation water management strategies for wheat under sodic environment

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Title Irrigation water management strategies for wheat under sodic environment
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Creator Singh, A.K., S. Arora, Y.P. Singh, C.L. Verma, A.K. Bhardwaj, N. Sharma
 
Subject Water, energy, irrigation, wheat, salt, salt affected soil
 
Description Not Available
Wheat (Triticum aestivum) is a moderately salt-tolerant crop as well as susceptible to excess application
of irrigation water. This requires a proper strategy when crop like wheat is grown under sodic
environment. As it is evident that, sodic soils are characterized by a relatively low electrical
conductivity (EC), high exchangeable sodium (Na) on exchange sites, soil pH > 8.0, low rate of
infiltration, and dispersed soil. Thus, irrigation strategy for wheat in sodic soils differs from normal
soils in terms of irrigation depth and irrigation frequency. An experiment to determine the suitable
irrigation strategy along with methods of application namely: Surface (farmer’s practice), Sprinkler
(double nozzle impact sprinkler), and LEWA (Low Energy Water Application) were initiated in the
year 2012 for wheat crop. Irrigation depth of 6 cm in case of surface method, and 4 cm in case of
sprinkler and LEWA was applied at each irrigation event. The irrigation events based on IW/CPE
ratios of 1.0, 0.8 and 0.6 through surface, sprinkler and LEWA methods were imposed. The results
revealed that Sprinkler and LEWA resulted in highest wheat yield of 2.4 t/ha to 2.5 t/ha, which
was 10 to 20 percent higher than the highest wheat yield recorded under surface irrigated plots by
using 30 to 40 percent less water. Hence, use of sprinkling devices to irrigate wheat may not only
lead to substantial saving of water as well as energy in terms of fuel used for pumping without
compromising the crop yield under sodic enviroonment
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Date 2018-11-13T08:24:31Z
2018-11-13T08:24:31Z
2016-07-01
 
Type Research Paper
 
Identifier Singh, A.K., S. Arora, Y.P. Singh, C.L. Verma, A.K. Bhardwaj, N. Sharma 2016. Irrigation water management strategies for wheat under sodic environment. Journal of Soil & Water Conservation 15(3): 211-216
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http://krishi.icar.gov.in/jspui/handle/123456789/10804
 
Language English
 
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Publisher Not Available