Growth and yield of corn grown on two alluvial soils of Louisiana applied with different phosphorus rates

被引：0
|
作者：
Dalen, Marilyn [1 ]
Tubana, Brenda [1 ]
Kanke, Yumiko [1 ]
Lofton, Josh [2 ]
Mascagni, Henry J., Jr. [3 ]
机构：
[1] LSU AgCtr, Sch Plant Environm & Soil Sci, 104 Sturgis Hall, Baton Rouge, LA 70803 USA
[2] LSU AgCtr, Macon Ridge Res Stn, Winnsboro, LA USA
[3] LSU AgCtr, Northeast Res Stn, St Joseph, LA USA
来源：
JOURNAL OF PLANT NUTRITION | 2016年 / 39卷 / 08期
关键词：
Alluvial soils; extractable-P; Mehlich-3; Bray-2; P-rate; MATTER;
D O I：
10.1080/01904167.2015.1105261
中图分类号：
Q94 [植物学];
学科分类号：
071001 ;
摘要：
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 P2O5 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.
引用
收藏
页码：1137 / 1146
页数：10
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