The effects of the application of the graft copolymers (Hydrolyzed starch-g-polyacrylonitrile (HSPAN) and
Hydrolyzed starch-g-polyacrylic acid (HSPAA)) on the nitrogen (N) and phosphorus (P) retention capacity of soil was
evaluated in this study. Soil nutrient (N and P) retention capacity tests was carried out at three graft copolymers
application rates (3.0, 6.0, and 9.0g/kg soil) against a blank soil sample to which graft copolymers was not applied.
Diammonium phosphate (DAP) at 0, 100, and 200mg in aqueous solution/kg soil were applied in triplicates. The soil
samples were mixed thoroughly and allowed to air-dry. The residual N and P contents of the soil samples were
determined and reported as the amounts of nutrients retained as a function of the graft copolymer and DAP application
rates. The result of this study has clearly demonstrated the potential of the graft copolymers to alleviate problems
related to nutrient loss from the soil media. Leaching of nutrients (N and P) in soil has been found to be reduced to
minimal (0.46%N, and 1.13%P) with the application of hydrolyzed graft copolymer and the nutrients are thus available
to plant for growth by suction pressure difference.
Keywords: Graft copolymers; starch; soil; nutrient retention;
EKEBAFE, L., Ekebafe1*, L , Ogbeifun1, D , Okieimen1, F & Ekebafe2, O (2019). Assessment of the Effect of Hydrolysed Starch Graft CopolymersApplication on Soil Nutrient (Phosphorus and Nitrogen) Retention. Afribary. Retrieved from https://track.afribary.com/works/ekebafe-2018-mmsr
EKEBAFE, LAWRENCE, et. al. "Assessment of the Effect of Hydrolysed Starch Graft CopolymersApplication on Soil Nutrient (Phosphorus and Nitrogen) Retention" Afribary. Afribary, 20 Jun. 2019, https://track.afribary.com/works/ekebafe-2018-mmsr. Accessed 23 Nov. 2024.
EKEBAFE, LAWRENCE, Lawrence Ekebafe1* , David Ogbeifun1 , Felix Okieimen1 and Osazoduwa Ekebafe2 . "Assessment of the Effect of Hydrolysed Starch Graft CopolymersApplication on Soil Nutrient (Phosphorus and Nitrogen) Retention". Afribary, Afribary, 20 Jun. 2019. Web. 23 Nov. 2024. < https://track.afribary.com/works/ekebafe-2018-mmsr >.
EKEBAFE, LAWRENCE, Lawrence Ekebafe1* , David Ogbeifun1 , Felix Okieimen1 and Osazoduwa Ekebafe2 . "Assessment of the Effect of Hydrolysed Starch Graft CopolymersApplication on Soil Nutrient (Phosphorus and Nitrogen) Retention" Afribary (2019). Accessed November 23, 2024. https://track.afribary.com/works/ekebafe-2018-mmsr