Open AccessDegree of Reclamation of a Saline-Sodic Soil in Lajas Valley, Puerto Rico
Author(s) -
G. Acevedo Ramos,
J. A. Bonnet,
J. Ortiz Vélez
Publication year - 1961
Publication title -
the journal of agriculture of the university of puerto rico/the journal of agriculture of the university of puerto rico
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.123
H-Index - 10
eISSN - 2308-1759
pISSN - 0041-994X
DOI - 10.46429/jaupr.v45i3.13750
Subject(s) - land reclamation , sodium , sodic soil , soil water , chemistry , bagasse , saline , potassium , amendment , drainage , environmental chemistry , environmental science , soil science , pulp and paper industry , history , ecology , archaeology , organic chemistry , biology , political science , law , engineering , medicine , endocrinology
In Lajas Valley, in southwestern Puerto Rico, there is a rather large portion of saline-sodic soils. These require reclamation if normal plant growth is to be sustained by them. A field experiment was initiated including six treatments: Two identical checks, and treatments with bagasse, bagasse-calcium chloride, sulfur, and bagasse-sulfur. The experimental plots were flooded periodically with fresh water. Soil samples were collected at different depths and analyzed to study the removal of soluble salts and exchangeable sodium. Data reported include values for electrical conductivity (EC) of soil extracts and exchangeable sodium percentage (ESP) in the soil. Results so far obtained in the reclamation experiment may be summarized as follows: 1, Application of 94 inches of water up to the maximum used to date tends to lower the soluble salts and the soil exchangeable sodium, regardless of treatment differentials. 2, The removal of the soluble salts and the reduction in exchangeable sodium were less effective in the lower layers of the soil. 3, Sulfur and calcium chloride tend to be more effective in lowering the exchangeable sodium percentage in the colloids of the surface layer of the soil. 4, There is need of a chemical amendment in addition to water and drainage if the exchangeable sodium percentage in the soil is to be lowered effectively.