Evaluate the effect of different rates of super absorbent polymer (SAP) on soil properties and yield components of sesame crop with desert soil
Paper Details
Evaluate the effect of different rates of super absorbent polymer (SAP) on soil properties and yield components of sesame crop with desert soil
Abstract
So far, no method has been introduced to improve the water holding capacity of sandy soil in the Pakistan’s Thar Desert. Meanwhile, other countries such as Iran, China, Europe, and the United States have worked on mixing SAP to improve water holding capacity, and improving water use efficiency to increase crop production on low permeability soils. The same study was conducted on Thar soil of Pakistan to improve water holding capacity and crop production. In this regard, pot experiments were conducted to assess the effect of different proportions of SAP, including four treatments: i) T0 = control (no mixing of SAP), ii) T1 = SAP mix with soil @ 6 kg ha-1, iii) T2 = SAP mix with soil @ 9 kg ha-1 and iv) T3 = SAP mix with soil @ 12 kg ha-1, every treatment was related with three replications. The irrigation water requirement was determined using CROPWAT (8.0) Model. Results indicated that the soil physical properties was significant affected and soil holding capacity was increased from 24 % to 35 % with application of SAP. Similarly, soil pH and EC was significantly decreased. Moreover, crop yield and water use efficiency was slightly increased along with the increase of SAP as compared to control. Statistical analysis indicates that plant height is significant and stem circumference, capsule number, capsule length and test weight are not significant (p = 0.05). As a concern for climate change forecasting, the application of an SAP dose of 12 kg ha-1 is suitable for sesame production in desert soils.
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