2
Associate Professor of Soil Science Department, Faculty of Agriculture, University of Tabriz
Abstract
Abstract
In this study, P critical level for corn plant (Zea mays L.) was determined using PBC in 25 combined soils samples from different fields of East Azerbaijan province. To calculate the PBC, current soil P test methods such Olsen,Colwel, Soltanpur and Schowab, Kelna2 and iron impregnated strips as a quantity factor (Q) and the methods of soluble P measurements such as distilled water, calcium chloride and Paauw method as a intensity factor(I) was used. According of the results, the method of PBC (Olsen-P/ Paauw-P) compared to other methods for calculating PBC, was the best method to predict of P uptake by corn plant. The high correlation of PBC (Olsen-P/ Paauw-P) data with the shoot content of phosphorus was confirmed. PBC linear correlation with shoot P content was separated in two positive and negative parts and the positive value of the correlation was 0.91** and negative value was -0.89**. Critical level of soil P for corn with PBC method based on 90 % relative dry matter was determined 2.2, 2.44 and 1.19 by using graphical Cate–Nelson, Cate–Nelson analysis of variance and Mitscherlich-Bray methods, respectively. Mitscherlich-Bray equation coefficient C1 and C, for PBC, were 0.08411 and 0.0122 respectively.
Reyhanitabar, A., Maghsoodi, 1. R., & Najafi, N. (2015). Feasibility study of phosphorus buffering capacity (PBC) application for estimation of corn available phosphorus in some calcareous soils. Journal of Soil Management and Sustainable Production, 4(4), 81-104.
MLA
Adel Reyhanitabar; 1Mohamad Reza Maghsoodi; Nosratollah Najafi. "Feasibility study of phosphorus buffering capacity (PBC) application for estimation of corn available phosphorus in some calcareous soils", Journal of Soil Management and Sustainable Production, 4, 4, 2015, 81-104.
HARVARD
Reyhanitabar, A., Maghsoodi, 1. R., Najafi, N. (2015). 'Feasibility study of phosphorus buffering capacity (PBC) application for estimation of corn available phosphorus in some calcareous soils', Journal of Soil Management and Sustainable Production, 4(4), pp. 81-104.
VANCOUVER
Reyhanitabar, A., Maghsoodi, 1. R., Najafi, N. Feasibility study of phosphorus buffering capacity (PBC) application for estimation of corn available phosphorus in some calcareous soils. Journal of Soil Management and Sustainable Production, 2015; 4(4): 81-104.
)