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Soil Water, Plant Yield and Root Dynamics under Application of Super absorbent Polymers (SAP) in Semi- Aris Alfisols.

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Title Soil Water, Plant Yield and Root Dynamics under Application of Super absorbent Polymers (SAP) in Semi- Aris Alfisols.
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Creator Reddy K.S, Vijayalaxmi, V.Maruthi, Nemichandrappa and B.Umesha.
 
Subject Water absorption rate, soil water holding capacity, water productivity, tomato, root biomass
 
Description Not Available
The Semi-arid alfisols are predominant in rainfed agriculture having very low water holding capacity and surface
crusting necessitating the adoption of water conservation technologies for drought management. Laboratory experiments were
conducted in loamy sand for physical characterization of super absorbent polymers. Four polymer products (P1, P2, P3 and
P4) of the commercial value with different concentrations (0.25%, 0.75%, 1.25% and 1.75%) were used and compared with
control (soil without polymer). Among four polymer products tested, SAP P3 showed maximum water absorption of 312 g g-1.
Maximum soil moisture content of 42% and minimum of 20% was observed at field capacity (0.3 bar) and permanent wilting
point (15 bar) with 1.75% SAP concentration. The experiment on water productivity with tomato was carried out with P3
having maximum water absorption at 50 and 80% moisture depletion levels and 0.25, 0.5 and 0.75% polymer concentrations in
growth chambers. Significant difference (p=0.05) was observed among different polymer concentrations at 50% soil moisture
depletion level. The maximum yield in tomato (2.71 kg/plant), water productivity (318.52 kg m-3), water saving (69.3%) and
90% enhanced root growth were obtained with 0.75% polymer concentration (P3) at 50% soil moisture depletion.
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Date 2023-01-30T06:16:36Z
2023-01-30T06:16:36Z
2015
 
Type Research Paper
 
Identifier Reddy K.S, Vijayalaxmi, V.Maruthi, Nemichandrappa and B.Umesha. (2015). Soil Water, Plant Yield and Root Dynamics under Application of Super absorbent Polymers (SAP) in Semi- Aris Alfisols. Indian Journal of Dryland Agricultural Research and Development. 30(1): 64-68.
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http://krishi.icar.gov.in/jspui/handle/123456789/75857
 
Language English
 
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Publisher Not Available