Selectivity and Effectiveness of Herbicides in the Grain Sorghum Crop
ABSTRACT: Over the years, cultivated areas of sorghum have expanded considerably in Brazil. Chemical weed control has become an obstacle due to the scarcity of herbicides registered for the crop. The aim of this study was to evaluate the efficiency of weed control and selectivity of herbicides appli...
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| Format: | Article |
| Language: | English |
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Sociedade Brasileira da Ciência das Plantas Daninhas
2019-08-01
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| Series: | Planta Daninha |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582019000100264&tlng=en |
| _version_ | 1818947352663162880 |
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| author | G.V. PIMENTEL D.F. GUIMARÃES S.G. MOREIRA M.O.T. ÁVILA I.A. MARTINS A.T. BRUZI |
| author_facet | G.V. PIMENTEL D.F. GUIMARÃES S.G. MOREIRA M.O.T. ÁVILA I.A. MARTINS A.T. BRUZI |
| author_sort | G.V. PIMENTEL |
| collection | DOAJ |
| description | ABSTRACT: Over the years, cultivated areas of sorghum have expanded considerably in Brazil. Chemical weed control has become an obstacle due to the scarcity of herbicides registered for the crop. The aim of this study was to evaluate the efficiency of weed control and selectivity of herbicides applied in pre and post emergence in the crop. Two experiments were conducted. In one of them, the hybrid BRS 310 was used while DKB 550 was used in the other. The experiments were performed in the field in randomized block design, evaluating seven treatments with four replications. The used treatments were: 1. Hand weeding, 2. S-metolachlor (1,440 g a.i. ha-1), 3. S-metolachlor (1,440 g a.i. ha-1) + atrazine (2,000 g a.i. ha-1), 4. atrazine (2,000 g a.i. ha-1), 5. atrazine (3,000 g a.i. ha-1), 6. atrazine (2,000 g a.i. ha-1) + mineral oil (0.25%), and 7. atrazine (2,000 g a.i. ha-1) + mineral oil (0.5%). It was verified that post-emergence atrazine was efficient in the weed control and selective to the sorghum crop, not affecting productivity, except in mixture with mineral oil (0.5%). S-metolachlor cannot be recommended in pre-emergence for the tested cultivars because it is not selective, reducing plants and productivity. |
| first_indexed | 2024-12-20T08:29:33Z |
| format | Article |
| id | doaj.art-19d775eb730641e0898c77320373cd5f |
| institution | Directory Open Access Journal |
| issn | 0100-8358 |
| language | English |
| last_indexed | 2024-12-20T08:29:33Z |
| publishDate | 2019-08-01 |
| publisher | Sociedade Brasileira da Ciência das Plantas Daninhas |
| record_format | Article |
| series | Planta Daninha |
| spelling | doaj.art-19d775eb730641e0898c77320373cd5f2022-12-21T19:46:45ZengSociedade Brasileira da Ciência das Plantas DaninhasPlanta Daninha0100-83582019-08-013710.1590/s0100-83582019370100069Selectivity and Effectiveness of Herbicides in the Grain Sorghum CropG.V. PIMENTELhttps://orcid.org/0000-0001-9849-6427D.F. GUIMARÃESS.G. MOREIRAM.O.T. ÁVILAI.A. MARTINSA.T. BRUZIABSTRACT: Over the years, cultivated areas of sorghum have expanded considerably in Brazil. Chemical weed control has become an obstacle due to the scarcity of herbicides registered for the crop. The aim of this study was to evaluate the efficiency of weed control and selectivity of herbicides applied in pre and post emergence in the crop. Two experiments were conducted. In one of them, the hybrid BRS 310 was used while DKB 550 was used in the other. The experiments were performed in the field in randomized block design, evaluating seven treatments with four replications. The used treatments were: 1. Hand weeding, 2. S-metolachlor (1,440 g a.i. ha-1), 3. S-metolachlor (1,440 g a.i. ha-1) + atrazine (2,000 g a.i. ha-1), 4. atrazine (2,000 g a.i. ha-1), 5. atrazine (3,000 g a.i. ha-1), 6. atrazine (2,000 g a.i. ha-1) + mineral oil (0.25%), and 7. atrazine (2,000 g a.i. ha-1) + mineral oil (0.5%). It was verified that post-emergence atrazine was efficient in the weed control and selective to the sorghum crop, not affecting productivity, except in mixture with mineral oil (0.5%). S-metolachlor cannot be recommended in pre-emergence for the tested cultivars because it is not selective, reducing plants and productivity.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582019000100264&tlng=enSorghum bicolorphytotoxicitychemical controlweed managementproductivity |
| spellingShingle | G.V. PIMENTEL D.F. GUIMARÃES S.G. MOREIRA M.O.T. ÁVILA I.A. MARTINS A.T. BRUZI Selectivity and Effectiveness of Herbicides in the Grain Sorghum Crop Planta Daninha Sorghum bicolor phytotoxicity chemical control weed management productivity |
| title | Selectivity and Effectiveness of Herbicides in the Grain Sorghum Crop |
| title_full | Selectivity and Effectiveness of Herbicides in the Grain Sorghum Crop |
| title_fullStr | Selectivity and Effectiveness of Herbicides in the Grain Sorghum Crop |
| title_full_unstemmed | Selectivity and Effectiveness of Herbicides in the Grain Sorghum Crop |
| title_short | Selectivity and Effectiveness of Herbicides in the Grain Sorghum Crop |
| title_sort | selectivity and effectiveness of herbicides in the grain sorghum crop |
| topic | Sorghum bicolor phytotoxicity chemical control weed management productivity |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582019000100264&tlng=en |
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