Vol. 8, Issue 1 (2020)
Study of different phosphorus fractions and their relationship with soil properties under major cropping systems in Y.S.R. Kadapa district, A.P.
Author(s): GK Surya Krishna, T Giridhara Krishna, V Munaswamy and Y Reddi Ramu
Abstract: Phosphorus fractionation study in soils of Y.S.R. Kadapa district, A.P, was studied in relation to soil properties in which 5 soil samples collected from each major cropping system were analysed for different physico-chemical properties and different P fractions. The sequential distribution of different forms of P under major cropping systems in surface soils followed the order: Ca-P > Fe-P > Al-P > Sal-P ( Fallow-Bengalgram), Al-P > Ca-P > Sal-P > Fe-P (Sunflower-Sesame), Ca-P > Fe-P > Al-P > Sal-P (Paddy-Paddy), Ca-P > Al-P > Fe-P > Sal-P (Groundnut monocropping), Al-P > Fe-P > Ca-P > Sal-P (Groundnut-Groundnut). Soil reaction (pH) showed positive and significant correlation with other forms of P (r= 0.413*), available P2O5 showed positive and significant correlation with Al-P (r= 0.893**), Fe-P (r= 0.823**), Ca-P (r= 0.766**) and total-P (r= 0.651**). Al-P showed positive and significant correlation with Fe-P (r= 0.916**), Ca-P (r= 0.473*) and total-P (r= 0.554**) whereas Fe-P showed significant and positive correlation with Ca-P (r= 0.543**) and total-P (r= 0.643**). Ca-P showed positive and significant correlation with total-P (r= 0.705**), total-P showed positive and significant relation with other forms of P (r= 0.790**).
DOI: 10.22271/chemi.2020.v8.i1i.8326
Pages: 612-615 | 509 Views 107 Downloads
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How to cite this article:
GK Surya Krishna, T Giridhara Krishna, V Munaswamy, Y Reddi Ramu. Study of different phosphorus fractions and their relationship with soil properties under major cropping systems in Y.S.R. Kadapa district, A.P.. Int J Chem Stud 2020;8(1):612-615. DOI: 10.22271/chemi.2020.v8.i1i.8326
