Phosphate rock solubility in relation to tsp urea and organic matter application

Susilawati K., . and Aminuddin H., . and Hanafi M. M., . and Khanif Y. M., . (2005) Phosphate rock solubility in relation to tsp urea and organic matter application. [Proceedings Paper]

Release of P from PR requires additional inputs to fulfill the P requirement of plant. The addition of TSP urea and organic matter to PR influenced PR solubility in different ways. Addition of TSP increased the H in the system and promotes the solubility of PR 324.31 mgL- “ day one and 318.81 mgL- “ day 10 whilst the presence of urea inhibited P solubility of PR. Organic matter peat addition however; increased more than 500 P availability in the system as compared to CIPR alone at day one. This amount was maintained until the end of incubation. A combination of urea TSP and peat with PR fertilizer slightly decreased P availability due to the increase in pH. However highest P availability was detected for these three sources together with PR at day one and day ten. Thus acidity provided by TSP and additional CEC given by peat played an important role in making P available as compared to the addition of ammonium ion into the system.

Full text available from: Official URL: http://myagric.upm.edu.my/id/eprint/16109

Abstract

Release of P from PR requires additional inputs to fulfill the P requirement of plant. The addition of TSP urea and organic matter to PR influenced PR solubility in different ways. Addition of TSP increased the H in the system and promotes the solubility of PR 324.31 mgL- “ day one and 318.81 mgL- “ day 10 whilst the presence of urea inhibited P solubility of PR. Organic matter peat addition however; increased more than 500 P availability in the system as compared to CIPR alone at day one. This amount was maintained until the end of incubation. A combination of urea TSP and peat with PR fertilizer slightly decreased P availability due to the increase in pH. However highest P availability was detected for these three sources together with PR at day one and day ten. Thus acidity provided by TSP and additional CEC given by peat played an important role in making P available as compared to the addition of ammonium ion into the system.

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Item Type:	Proceedings Paper
AGROVOC Term:	Rock phosphate
AGROVOC Term:	Urea
AGROVOC Term:	Organic matter
AGROVOC Term:	Ammonium
AGROVOC Term:	Fertilizers
AGROVOC Term:	Phosphates
AGROVOC Term:	Calcium
AGROVOC Term:	Peat
AGROVOC Term:	Laboratory experimentation
AGROVOC Term:	Experiments
Geographical Term:	MALAYSIA
Depositing User:	Ms. Suzila Mohamad Kasim
Last Modified:	24 Apr 2025 05:16
URI:	http://webagris.upm.edu.my/id/eprint/13431

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