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- Title
Mısırda Çıkış Öncesi Kullanılan Bazı Herbisitlerin Mısır Bitkisinin Çimlenmesi ve Gelişimi Üzerine Etkileri.
- Authors
ÜSTÜNER, Tamer; DİRİ, Ümmet
- Abstract
The corn plant is very sensitive both to weeds and herbicides in the first stages of its development. Many herbicides are used in the chemical control against weeds in corn production. For this reason, it was investigated whether some herbicides that are applied before germination had phytotoxic effects on corn seed germination, root and shoot development. For this purpose, pendimethalin, dimethenamid-P, isoxaflutole+thiencarbazone-methyl+cyprosulfamide=(ITC)] was used as the herbicide before germination. The herbicide doses to be applied were; 300 ml/da, 100 ml/da and 35 ml/da 2, 3 and 4-fold (K) were applied in laboratory (petri), greenhouse (in viola and polyethylene tubes) and field conditions, respectively. The plant height measurements and phytotoxicity observations after germination of corn seed were made on days 3, 7, 14, 21, 28 and 35. In pendimethalin and dimethenamid-P applications in petri medium, the germination root lengths were found as 3 cm in K and 2K doses; however, they were 1 cm each in 3K and 4K doses; and in ITC, the germination root lengthsin K and 2K were 1 cm, 0.5 cm in 3K and 4K doses, and 4 cm in the control. In greenhouse setting, 7.5% phytotoxicity was observed in K dose in the administration of pendimethalin and dimethenamid-P in the vials, while it was 19.0% in 2K dose, 55.0% in 3K dose, and 78.0% in 4K dose. This phytotoxicity symptom was observed as brown stains at the point where the leaf and trunk met the soil surface and at the point where the trunk and the leaves met. In the greenhouse, brown necrosis was formed at the point where the root-trunk separation was after corn germination at 3K and 4K doses of pendimethalin and dimethenamid-P in polyethylene tubes. In ITC application, on the other hand, no phytotoxicity was observed. In the field trials, no phytotoxicity was observed in the parcels where these three herbicides were administered in K, 2K, 3K and 4K doses in the period from the germination of the corn seeds till their development.
- Subjects
WEED control; WEED control for corn; CORN seeds; ROOT development; SEED development; PHYTOTOXICITY; AMARANTHUS palmeri
- Publication
Turkish Journal of Weed Science, 2019, Vol 22, Issue 1, p53
- ISSN
1303-6491
- Publication type
Article