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Cassava Starch Based Superabsorbent Polymer as Soil Conditioner: Impact on Soil Physico‐Chemical and Biological Properties and Plant Growth
Author(s) -
Parvathy Prabha C.,
Jyothi Alummoottil N.,
John K. Susan,
Sreekumar Janardhanan
Publication year - 2014
Publication title -
clean – soil, air, water
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.444
H-Index - 66
eISSN - 1863-0669
pISSN - 1863-0650
DOI - 10.1002/clen.201300143
Subject(s) - superabsorbent polymer , soil conditioner , amendment , starch , water content , chemistry , soil water , agronomy , polymer , environmental science , soil science , biology , food science , geotechnical engineering , organic chemistry , political science , law , engineering
ABSTRACT Superabsorbent polymers (SAPs) are macromolecules with the ability to absorb water and release it slowly to the surroundings. SAP hydrogels can be used as soil moisture conditioners which act as water reservoirs and release water depending upon the need of plant roots. In the present study, a cassava starch based superabsorbent hydrogel was evaluated as a soil conditioner and its effect on physical, chemical, and biological properties of the soil as well as on plant growth parameters was studied. Amendment of the soil with the starch based SAP hydrogel significantly altered the physical and chemical properties of the soil. Bulk density of the soil was decreased, whereas water holding capacity and porosity were increased on SAP treatment. There was an improvement in the soil status of major, secondary and micronutrients and organic carbon in the SAP amended soil. An increase in bacteria (16%) and fungi counts (18%) as well as superior plant growth were observed for the treatment with SAP and irrigated at an interval of 3 days, compared to those of control without SAP. Soil amendment with starch based SAP hydrogel was found to be beneficial for maintaining the physicochemical and biological soil properties as well as plant growth.