Bidens pilosa L. (Asteraceae) control in sunflower with residual herbicides.
Abstract One of the most damaging species in sunflower crops in Brazil is the hairy beggartick (Bidens pilosa L). The large number of seeds, the various vegetative cycles during the year, the staggered germination and the scarcity of selective and effective herbicides to control this weed in sunflower are some of attributes that hinder the control of hairy beggartick populations. Two experiments were carried out to evaluate the control of hairy beggarticks, as well as sunflower tolerance to herbicides. The treatments were as follows: S-metolachlor (1,200 and 2,400 g ai ha-1), flumioxazin (60 and 120 g ai ha-1), and sulfentrazone (150 and 300 g ai ha-1) and two controls (weedy and weed-free check). The selectivity of the herbicides was higher at low doses. Flumioxazin and sulfentrazone caused injury to sunflowers at the highest doses and mainly in sandy soils. Although S-metolachlor did not cause visual symptoms of injury, the higher dose reduced sunflower yield. The herbicides sulfentrazone and flumioxazin provided satisfactory control of hairy beggartick plants in both types of soils. S-metolachlor presented medium control of hairy beggarticks in clay soil; however, its efficiency was slightly higher when applied in sandy soil. The most efficient herbicide for controlling hairy beggartick plants was flumioxazin, followed by sulfentrazone.
Main Authors: | BRIGHENTI, A. M., VAROTTO, Y. V. G. |
---|---|
Other Authors: | ALEXANDRE MAGNO B DOS SANTOS, CNPGL; Yago Vieira Guerra Varotto. |
Format: | Artigo de periódico biblioteca |
Language: | English eng |
Published: |
2020-01-06
|
Subjects: | S-metolachlor, Helianthus Annuus, Flumioxazin, Sulfentrazone, Weeds, |
Online Access: | http://www.alice.cnptia.embrapa.br/alice/handle/doc/1118205 |
Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
Similar Items
-
Controle de algodoeiro cv. FM 985 GLTP oriundo de sementes deslintadas e com línter com herbicidas registrados para a cultura da soja em pré-emergência.
by: MARCON, E. F., et al.
Published: (2023-03-02) -
Supressão do crescimento de plantas voluntárias de soja na cultura do girassol.
by: BRIGHENTI, A. M., et al.
Published: (2016-12-29) -
Pesticide dynamics in agroecosystems: Assessing climatic and hydro-physical effects in a soybean cycle under no-tillage
by: Behrends Kraemer, Filipe, et al.
Published: (2022-09) -
Controle pré-emergente de plantas daninhas na cultura da soja com a mistura de Imazaquin + Flumioxazin e seu efeito residual sobre o milho em sucessão.
by: SILVA, J. B. da, et al.
Published: (2011-04-10T11:11:11Z) -
Controle pré-emergente de plantas daninhas na cultura da soja com Sulfentrazone isolado e em mistura com Clomazone.
by: DUARTE, N. de F., et al.
Published: (2011-04-10T11:11:11Z)