Investigation of Using Different Weeder Machines (Motorized and Non-Motorized) to Control Rice Weeds by Deilmani and Hassansaraei

In order to find how different types of weeders (powered and non-powered) are working in controlling weeds of peddy lands in which two rice cultivars, Deilamani and Hassansaraei, were grown, a field experiment was conducted in 2017-2018. This study was performed as a factorial experiment with cultivar in two levels, Deilamani and Hassansaraei, and weeding method in five levels including manual motor weeding, using single-row, two-row, three-row weeders, and control. The experiment was performed in a randomized complete block design with three replications. Evaluation parameters in this study included field capacity, field efficiency, weeding efficiency, weed charateristics, plant growth charateristics and the rate of damaged plants. The results showed that the highest (91.91%) and lowest (91.33%) efficiency were obtained when single-row powered weeder and three-row powered weeder, reaspectively, were used. In terms of field capacity, the single-row powered weeder was on the top of the list with 0.198 ha.h-1, and the non-powered manual weeder was at the bottom of the list with 0.0096 ha.h-1. In terms of field efficiency, the single-row powered weeder was on the top of the list with 78.22%, and the non-powered manual weeder was at the bottom of the list with 65.53%. The results obtained from this study indicated that the single-row powered weeder was recognized as the best weeder in controlling the rice weeds where Deilamani and Hassansaraei cultivars are growing.