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Effects of Some Triazines on Corn and Bean Plants Grown on Natural and Amended Soils
Author(s) -
Wallace A.,
Mueller R. T.,
El Gazzar A. M.
Publication year - 1970
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/agronj1970.00021962006200030019x
Subject(s) - atrazine , calcareous , agronomy , soil water , chemistry , nutrient , calcareous soils , zea mays , phytotoxicity , pesticide , biology , botany , ecology , organic chemistry
Phytotoxic effects of some triazines were studied for corn grown on soil amended to be acid, neutral, or calcareous. One of the triazines (prometryne) was more phytotoxic than others to corn on calcareous soil. Atrazinc was not toxic to corn on any of the soils at commercial application rates although it was mildly toxic in nutrient solution and in soil at high application rates. Somewhat more C 14 ‐atrazine was absorbed by corn from calcareous soil than from noucalcareous soil and more from solution at high pH than at low pH. Bush beans, for which atrazine is toxic, contained no more C 14 from a C 14 ‐atrazine application than did corn. Toxicity to corn with atrazine in solution culture was increased rather than decreased by a decreased Ca level. Fe and Zn chelates did not overcome any of the phytotoxicities.