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Response of Dwarf Wheat (Triticum aestivum) and Four Weed Species to Herbicides

Published online by Cambridge University Press:  12 June 2017

O. P. Kataria  and
Vijay Kumar
O. P. Kataria
Affiliation:
Dep. Agron., Haryana Agric. Univ., Hissar, 125004, India
Vijay Kumar
Affiliation:
Dep. Agron., Haryana Agric. Univ., Hissar, 125004, India
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Abstract

Control of littleseed canarygrass (Phalaris minor Retz.), wild oat (Avena fatua L.), common lambsquarters (Chenopodium album L.), and field bindweed (Convolvulus arvensis L.) in dwarf wheat (Triticum aestivum L.) fields was studied with five herbicides and hand weeding. Terbutryn [2-(tert-butylamino)-4-(ethylamino)-6-(methylthio)-s-triazine] and 1-benzthiazol-2-yl-1,3-dimethylurea controlled the weeds more effectively than did two hand weedings. Diuron [3-(3,4-dichlorophenyl)-1,1-dimethylurea], nitrofen (2,4-dichlorophenyl p-nitrophenyl ether), and dichlormate (3,4-dichlorobenzyl methylcarbamate), proved only partially effective against weeds, and were therefore significantly inferior to two hand weedings. Spikes per meter of row length and test weight of wheat were increased significantly by 1-benzthiazol-2-yl-1,3-dimethylurea (1.5 to 2 kg/ha), terbutryn (0.5 kg/ha), and two hand weedings over the yields of the weedy check. The 1-benzthiazol-2-yl-1,3-dimethylurea showed a high degree of selectivity in the wheat crop at 2 kg/ha and increased yields to those of weed-free plots. Terbutryn was almost as effective as 1-benzthiazol-2-yl-1,3-dimethylurea, which increased the wheat yields over those of the weedy check by 19.8 and 42.4% during the 1974/75 and 1975/76 seasons, respectively. Tolerance of dwarf wheat to terbutryn at 0.75 kg/ha was variable, resulting in significant decreases in yield components and grain yield. Dry-matter yield of wheat was negatively correlated with the dry matter production of weeds.

Keywords

Phalaris minorAvena fatuaweed control1-benzthiazol-2-yl-1,3-dimethylureaterbutryn
Type
Research Article
Information
Weed Science , Volume 29 , Issue 5 , September 1981 , pp. 521 - 524
Copyright
Copyright © Weed Science Society of America 

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References

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