Weed control and resistance of cotton cultivars to the herbicides diuron and fluometuron
Two experiments (one with diuron and other with fluometuron) were conducted in a sand-loam soil in the Campo Experimental de Surubim (Surubim experiment field station) located in Surubim. Pernambuco, Brazil. The herbicides were applied in pre-emergence in the following rates: 0,7, 1,4 and 2,1 kg a.i./ha of diuron and 0.8, 1.6 and 2.4 kg a.i./ha of fluometuron, in four upland cotton cultivars (Gossypium hirsutum v. latifolium Hutch). The soils were fertilized with a 30-40-10 NPK formula with the objective of minimizing the effect of the variability of the soil fertility. The experimental area had a balanced population of broad and narrow-leave weeds. The results showed that the cultivars tested were resistant to the rate used of both herbicides and showed a similar competitive behavior in relation to the weeds. For the herbicide diuron one application of 0.7 and 1.4 kg a.i./ha was sufficient for an effective control with no toxic effect to the cotton plant. For the herbicide fluometuron the recommended rate is 2.2 kg a.i./ha.
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Pesquisa Agropecuaria Brasileira
2014
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rev-pab-br-article-153832014-04-16T19:06:18Z Weed control and resistance of cotton cultivars to the herbicides diuron and fluometuron Controle de plantas daninhas e resistência de cultivares de algodoeiro herbáceo aos herbicidas diuron e fluometuron Nóbrega, Laudemiro Baldoíno da Beltrão, Napoleão Esberard de Macêdo Azevedo, Demóstenes Marcos Pedrosa de pre-emergence; Gossypium hirsutum; weeds; monocotyledon weeds; dicotyledon weeds pré-emergência; Gossypium hirsutum; invasoras; monocotiledôneas; dicotiledôneas Two experiments (one with diuron and other with fluometuron) were conducted in a sand-loam soil in the Campo Experimental de Surubim (Surubim experiment field station) located in Surubim. Pernambuco, Brazil. The herbicides were applied in pre-emergence in the following rates: 0,7, 1,4 and 2,1 kg a.i./ha of diuron and 0.8, 1.6 and 2.4 kg a.i./ha of fluometuron, in four upland cotton cultivars (Gossypium hirsutum v. latifolium Hutch). The soils were fertilized with a 30-40-10 NPK formula with the objective of minimizing the effect of the variability of the soil fertility. The experimental area had a balanced population of broad and narrow-leave weeds. The results showed that the cultivars tested were resistant to the rate used of both herbicides and showed a similar competitive behavior in relation to the weeds. For the herbicide diuron one application of 0.7 and 1.4 kg a.i./ha was sufficient for an effective control with no toxic effect to the cotton plant. For the herbicide fluometuron the recommended rate is 2.2 kg a.i./ha. Dois experimentos (um com diuron e outro com fluometuron) foram conduzidos no Campo Experimental de Surubim, PE, em solo franco-arenoso. Os herbicidas foram aplicados em pré-emergência, nas doses de 0,7, 1,4 e 2,1 kg i.a/ha de diuron e 0,8, 1,6 e 2,4kg i.a./ha de fluometuron, em quatro cultivares de algodoeiro herbáceo (Gossypium hirsutum var. latifolium Hutch.). A área experimental recebeu uma adubação de NPK na fórmula 30-40-10, com o objetivo de minimizar o efeito da variação da fertilidade do solo. O complexo florístico da área experimental era constituído de plantas de folhas largas e folhas estreitas, apresentando taxas de populações aproximadamente equilibradas. Os resultados mostraram que as cultivares testadas foram resistentes às doses utilizadas de ambos os herbicidas e apresentaram comportamento semelhante com relação às plantas daninhas de uma mesma classe. Para o diuron, as doses de 0,7 e 1,4 kg i.a./ha foram suficientes para um grau de controle eficiente, sem efeitos tóxicos à cultura. Para o fluometuron, a dose de 2,2 kg ia/ha seria recomendada. Pesquisa Agropecuaria Brasileira Pesquisa Agropecuária Brasileira 2014-04-16 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion application/pdf https://seer.sct.embrapa.br/index.php/pab/article/view/15383 Pesquisa Agropecuaria Brasileira; v.18, n.8, ago. 1983; 863-869 Pesquisa Agropecuária Brasileira; v.18, n.8, ago. 1983; 863-869 1678-3921 0100-104x por https://seer.sct.embrapa.br/index.php/pab/article/view/15383/9268 |
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Nóbrega, Laudemiro Baldoíno da Beltrão, Napoleão Esberard de Macêdo Azevedo, Demóstenes Marcos Pedrosa de |
| spellingShingle |
Nóbrega, Laudemiro Baldoíno da Beltrão, Napoleão Esberard de Macêdo Azevedo, Demóstenes Marcos Pedrosa de Weed control and resistance of cotton cultivars to the herbicides diuron and fluometuron |
| author_facet |
Nóbrega, Laudemiro Baldoíno da Beltrão, Napoleão Esberard de Macêdo Azevedo, Demóstenes Marcos Pedrosa de |
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Nóbrega, Laudemiro Baldoíno da |
| title |
Weed control and resistance of cotton cultivars to the herbicides diuron and fluometuron |
| title_short |
Weed control and resistance of cotton cultivars to the herbicides diuron and fluometuron |
| title_full |
Weed control and resistance of cotton cultivars to the herbicides diuron and fluometuron |
| title_fullStr |
Weed control and resistance of cotton cultivars to the herbicides diuron and fluometuron |
| title_full_unstemmed |
Weed control and resistance of cotton cultivars to the herbicides diuron and fluometuron |
| title_sort |
weed control and resistance of cotton cultivars to the herbicides diuron and fluometuron |
| description |
Two experiments (one with diuron and other with fluometuron) were conducted in a sand-loam soil in the Campo Experimental de Surubim (Surubim experiment field station) located in Surubim. Pernambuco, Brazil. The herbicides were applied in pre-emergence in the following rates: 0,7, 1,4 and 2,1 kg a.i./ha of diuron and 0.8, 1.6 and 2.4 kg a.i./ha of fluometuron, in four upland cotton cultivars (Gossypium hirsutum v. latifolium Hutch). The soils were fertilized with a 30-40-10 NPK formula with the objective of minimizing the effect of the variability of the soil fertility. The experimental area had a balanced population of broad and narrow-leave weeds. The results showed that the cultivars tested were resistant to the rate used of both herbicides and showed a similar competitive behavior in relation to the weeds. For the herbicide diuron one application of 0.7 and 1.4 kg a.i./ha was sufficient for an effective control with no toxic effect to the cotton plant. For the herbicide fluometuron the recommended rate is 2.2 kg a.i./ha. |
| publisher |
Pesquisa Agropecuaria Brasileira |
| publishDate |
2014 |
| url |
https://seer.sct.embrapa.br/index.php/pab/article/view/15383 |
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