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COMPARATIVE PHYTOTOXICITY OF NITRAPYRIN AND ATC TO SEVERAL LEGUMINOUS SPECIES
M. MAFTOUN, J. YASREBI and M. DARBEHESHTI
Plant and Soil
Vol. 63, No. 2 (1981), pp. 303-306
Published by: Springer
Stable URL: http://www.jstor.org/stable/42935468
Page Count: 4
You can always find the topics here!Topics: Peas, Green beans, Agricultural soils, Alluvial soils, Clay loam soils, Silty soils, Hypochromic anemia, Toxicity, Nitrification, Acid soils
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The relative toxicity of nitrapyrin 2-chloro-6-(trichloromethyl) pyridine and ATC (4-amino-1, 2, 4-triazole) on the growth of chick peas (Cicer arietinum L.) cow peas (Vigna sinensis L.), green beans (Phaseolus vulgaris L.), green peas (Pisum sativum L.) and mung beans (Phaseolus aureus Roxb.) and their effectiveness as nitrification inhibitor were studied under greenhouse conditions. ATC produced no toxicity symptoms in green peas, whereas resulted in leaf chlorosis in cow peas, chick peas and green beans. However, nitrapyrin toxicity appeared as leaf chlorosis in cow peas, and interveinal chlorosis in chick peas. Moreover, nitrapyrin-treated green beans and peas developed leaf curling and cupping. Although ATC had no significant effect on growth, a suppression in plant growth was associated with nitrapyrin application. Furthermore, green beans was the most resistant and chick peas the most sensitive to nitrapyrin. Nitrapyrin was more effective nitrification inhibitor than ACT, especially at the lower rates.
Plant and Soil © 1981 Springer