Open AccessInfluence of Soil Properties on the Phytotoxicity of Atrazine, Ametryne, Prometryne, and Diuron in Puerto Rican Soils
Author(s) -
L. C. Liu,
H. Cibes Viadé
Publication year - 1968
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.v52i4.11486
Subject(s) - avena , atrazine , environmental science , chemistry , horticulture , humanities , agronomy , biology , pesticide , philosophy
Thirteen soils representing a wide range of physical and chemical properties were used in this study. Four herbicides including Atrazine, Ametryne, Prometryne, and Diuron were applied at a concentration series from 0.5 to 32 p.p.m. to each soil, with the exception of Caño Tiburones soil. Kanota oat (Avena sativa L.) was chosen as an indicator plant. ED50 values were obtained for the various soil types. The result indicated that ED50 values varied greatly with different soil types. Simple, partial, and multiple correlations were made among ED50 values and different soil properties. It was found that the organic matter was the major soil property which contributed chiefly to the phytotoxicity of herbicides. A theoretical relationship between percent soil organic matter and p.p.m.w. of herbicides required for 50-percent fresh-weight reduction of oat was obtained for herbicide dosage-prediction purpose.