Optimizing efficacy of acetochlor + atrazine and dicamba at various doses to manage Conyza stricta L. in sugarcane
| Autor: | Arif Hussain, Mohammad Safdar Baloch, Asif Tanveer, Ejaz Ahmad Khan, Abdul Aziz Khakwani |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
0106 biological sciences
QH301-705.5 Physiology Plant Science Biology 01 natural sciences Biochemistry Crop chemistry.chemical_compound biological yield Dry weight sugarcane Dicamba persistence index Acetochlor Atrazine Biology (General) Leaf area index Crop yield Botany 04 agricultural and veterinary sciences chemistry Agronomy QK1-989 040103 agronomy & agriculture 0401 agriculture forestry and fisheries dry weight Weed Agronomy and Crop Science 010606 plant biology & botany |
| Zdroj: | Planta Daninha v.38 2020 Planta daninha Sociedade Brasileira da Ciência das Plantas Daninhas (SBCPD) instacron:SBCPD Planta Daninha, Volume: 38, Article number: e020220829, Published: 04 DEC 2020 Planta Daninha, Vol 38 (2020) |
| Popis: | Background: Conyza stricta L. (Horse weed) is an annual problematic weed in an agricultural ecosystem and considerably decreases the crop yield and quality. Objective: To determine the most effective pre and post emergence herbicides and their dose to control C. stricta in sugarcane crop. Methods: A two years field study comprised of six herbicides treatments along with weedy check and hand weeding. The design of study was RCBD with three replications. Results: Hand weeding recorded more leaf area index (LAI), crop growth rate (CGR) and net assimilation rate (NAR), biological and stripped yield. However, greater LAI, CGR and NAR, biological and stripped yield were recorded by acetochlor + atrazine at the rate of 2,715 g ha-1 (pre emergence) and dicamba at the rate of 466 g ha-1 (post emergence). All the treatments produced statistically comparable harvest index except weedy check, which produced less harvest index. Minimum C. stricta density and dry weight were recorded for acetochlor + atrazine at the rate of 2,715 g ha-1 and dicamba at the rate of 466 g ha-1. Acetochlor + atrazine at the rate of 2,715 g ha-1 (pre emergence) and dicamba at the rate of 466 g ha-1 (post emergence) gave better C. stricta control with high herbicides efficiency index. Conclusion: Acetochlor + atrazine at the rate of 2,715 g ha-1 (pre emergence) or dicamba at the rate of 466 g ha-1 (post emergence) may be used for efficient control of C. stricta in sugarcane. |
| Databáze: | OpenAIRE |
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