Growth and yield of corn grown on two alluvial soils of Louisiana applied with different phosphorus rates. (2nd July 2016)

• Record Type: Journal Article
• Authors: Dalen, Marilyn; Tubana, Brenda; Kanke, Yumiko; Lofton, Josh; Mascagni, Henry J.
• Is Part Of: Journal of plant nutrition. Volume 39:Number 8(2016)
• Page Start: 1137
• Page End: 1146
• Publication Date: 2016-07-02
• Subjects: Alluvial soils -- extractable-P -- Mehlich-3 -- Bray-2 -- P-rate; Plants -- Nutrition -- Periodicals; Plants -- Effect of minerals on -- Periodicals; Deficiency diseases in plants -- Periodicals; 575.76
• DOI: 10.1080/01904167.2015.1105261
• Languages: English
• ISSNs: 0190-4167

Abstract

ABSTRACT: The influence of soil properties on phosphorus (P) availability of Louisiana alluvial soils is not fully understood. A pot experiment was conducted in 2011 to evaluate the effect of different P fertilizer rate (0, 34, 67, 101 and 134 kg P2 O5 ha −1 ) on corn growth and development on Perry clay and Commerce silt loam (sil) soils and relate Mehlich-3 and Bray-2 soil test P values with yield, total biomass, and P uptake of corn. The Bray-2 P values were six times higher than Mehlich-3 P values for Commerce sil while they were similar for Perry clay. Bray-2 and Mehlich-3 extractable-P of both soils increased with increasing P rate but only corn grown on Perry clay responded to P rate (P < 0.05). Implementation of appropriate testing procedure for estimating plant-available P in soil is an important component of effective P fertilization guidelines for corn.