Premium
The Effect of Soil Characteristics and Winter Legumes on the Leaching of Potassium below the 8‐Inch Depth in some Alabama Soils 1
Author(s) -
Volk N. J.
Publication year - 1940
Publication title -
agronomy journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.752
H-Index - 131
eISSN - 1435-0645
pISSN - 0002-1962
DOI - 10.2134/agronj1940.00021962003200110007x
Subject(s) - citation , soil water , leaching (pedology) , agronomy , environmental science , horticulture , political science , law , soil science , biology
A salt added to the soil will leach into the subsoil as the drainage water moves downward unless something obstructs its passage. In the case of a soluble potassium salt, absorption by plants, soil flora, and exchange material will retard or inhibit the downward passage of the potassium. Truog and .Iones~ reviewed the literature and found that losses of potassium due to leaching varied between practically none and 7o pounds per acre annually, with an average of ~o to ~5 pounds per acre per year. It is the purpose of this paper to report the extent to which potassium has leached below a depth of 8 inches in 8 years when it. was applied in varying amounts to different soils, and under different cropping systems on fertility plots located on Alabama substations and experiment fields.