Assessment of Super Absorbent Polymer (SAP) on Plant Available Water (PAW) in Dry Lands

One of the ways overcoming cost irrigation is through in-situ water harvesting at plant roots. Super absorbent polymer (SAP) can facilitate This study attempted to assess effect SAP on available (PAW) different soils. In this study, was sequentially added rate 0.2%, 0.3% and 0.5% soil weight its impact assessed in clay, sandy clay loam The moisture retention characteristics original treated soils were studied using curves (SWRC) results modelled Gardner model. PAW estimated from SWRC as difference between content 1.5 3 bar all 5% level significance. WRC samples adequately found be described by model (Coefficient determination R2 ≥ 98% residual standard error (RSE) ≤ 0.04). changed with increase percentage Clay had a higher change then lastly loam. Plant increased. it increased 0.3291 zero 0.6223 SAP. Sandy 0.2721 0.5335 0.1691 0.3461 Hence, used conserve roots therefore reducing since has been