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Effect of Simazine and Diuron on the Nitrogen Content and Dry Weight of Wheat and Sorghum 1
Author(s) -
Rottman G. A.,
Tweedy J. A.,
Kapusta George
Publication year - 1974
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/agronj1974.00021962006600050028x
Subject(s) - simazine , kjeldahl method , nitrate , agronomy , chemistry , sorghum , shoot , dry weight , nitrogen , atrazine , biology , pesticide , organic chemistry
Studies were conducted to determine if 2‐chloro‐4,6‐bls‐(ethylamlno‐s‐triazine (simazine) or 3‐(3,4‐dichlorophenyl)‐l,l‐dimethylurea (diuron) increased the nitrate or Kjeldahl N content in the shoots or roots of wheat ( Triticum aestivum L.) or soghum ( Sorghum blcolor (L.) Moench)plants. Wheat and sorghum plants were grown in nutrient solutions containing several concentrations of these two herbicides for various time intervals. Nitrate N and Kjeldahl N were determined in shoots and roots and expressed as totals per plant. Simazine‐ and diuron‐treated wheat plants had a higher nitrate N content and lower dry weight than control 6 days after treatment. The Kjeldahl N per six plants was reduced by diuron and was not affected by simazine. Diuron at 0.25 ppm was phytotoxic to wheat. An increase in nitrate was usually accompanied by a decrease in dry weight.