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Study on the efficiency of singular and combined usage of three kinds of cultivators and its application time in cotton field | ||
| پژوهش های پنبه ایران | ||
| Article 1, Volume 5, Issue 2 - Serial Number 10, February 2018, Pages 91-108 PDF (586.74 K) | ||
| Document Type: Research Paper | ||
| DOI: 10.22092/ijcr.2018.116835 | ||
| Authors | ||
| Mohammad-Ali Behaeen* 1; Mohammad Fereidoonpoor2; Mohammad-Hasan Hekmat3 | ||
| 1Assistant Prof., at Dept., of Agricultural Engineering Research, Research and Training Center for Agriculture and Natural Resources in Fars Province, Agricultural Research, Education and Extension Organization, Shiraz, Iran | ||
| 2Researcher at Department of Plant Protection, Research and Training Center for Agriculture and Natural Resources in Fars province, Agricultural Research, Education and Extension Organization, Darab, Iran | ||
| 3Researcher at Department of Cotton, Research and Training Center for Agriculture and Natural Resources in Fars province, Agricultural Rerearch, Education and Extension Organization, Darab, Iran | ||
| Abstract | ||
| The application of herbicide after cotton planting in the Darab region of Fars province is not common and herbicide is only used before planting of cotton. Therefore, the application of the cultivator is important and can play an important role in increasing of yield. According to this, an experiment was conducted in randomized complete block design (RCBD) with eleven treatments and three replications. Analysis of variance and Duncan's multiple range test were used for evaluation of treatments. Treatments were included : a) use of crescent cultivator once in sixth week after sowing (T1); b) use of rolling cultivator once in sixth week after sowing (T2); c) use of sweep cultivator once in sixth week after sowing (T3); d) use of crescent cultivator in sixth week and rolling cultivator in eighth week after sowing (T4); e) use of crescent cultivator in sixth week and sweep cultivator in eighth week after sowing (T5); f) use of rolling cultivator in sixth week and sweep cultivator in eighth week after sowing (T6); g) use of crescent cultivator as two times in sixth and eighth weeks after sowing (T7); h) use of rolling cultivator as two times in sixth and eighth weeks after sowing (T8); i) use of sweep cultivator as two times in sixth and eighth weeks after sowing (T9); j) full season control of weeds (T10); k) no weeds control (T11). The parameters of weed control index, average depth of operation by cultivator and cotton yield and components were measured and analyzed. The results indicated that application of different cultivator treatments were significant at 1% level on weed control index and cotton yield. In relation to weed control, using of two times cultivator was better than one time in weed control. In terms of efficiency in weed control, crescent, sweep and rolling cultivators ranked first to third, respectively. In relation to yield and using of cultivators, the highest cotton yield obtained in the use of crescent cultivator in sixth and eighth weeks and the lowest yield got from treatment using roller cultivator in the sixth week that associated with the efficiency of cultivators in controlling weeds. Considering the advantages of using cultivators in comparison with the full season control of weeds, the use of crescent cultivator is recommended for the sixth and eighth weeks. | ||
| Keywords | ||
| Crescent; Sweep; Rolling; cultivator; cotton; weed control | ||
| References | ||
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