PJB-2019-973
SALTS RESPONSE IN SALINE SOIL UNDER DIFFERENT IRRIGATION INTERVAL IN SEMI-ARID REGION: AN IRRIGATION SCHEDULING APPROACH
Kamran Baksh
Abstract
The salinity of soil is a crucial challenge for growers irrigating in semi-arid zones. To accomplish salinity, growers require information of the salt’s basis and processes of the salt mobility through the root zone. The key source of salt is the application of irrigation water, even though in areas with the high watertables, the salts might be transferred into the root zone through capillary rise due to the high rate of evapotranspiration. Usually, salinization can be managed by good irrigated farming practices including irrigation scheduling to leach down the salts through the root zone. The aim of the study was to examine the salts movement in the saline soil profile in clay loam at the semi-arid region in Sindh, Pakistan. This field experiment was conducted in summer 2017 on salt-affected land by using three irrigation treatments including T1 (7-day irrigation interval), T2 (14-day irrigation interval) and T3 (21 days irrigation interval) under 10, 9 and 8 cm depths of irrigation water respectively. The texture of soil was silty clay loam having the electrical conductivity (EC) was in the range from 7.73 to 20.69 dS.m-1 while the pH ranges from 7.89 to 8.04. The results were consistent with the statistical examination of EC and pH data days-wise (7, 14 and 21 days) and depths-wise (10, 9 and 8 cm) by using two-way analysis of variance. The average reduction in the EC and pH of the soil were observed at 7 days interval and 10cm depth at 0.05 level of significance.
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