Evaluation of flame emission apparatus to control weeds in faba bean in River Nile state

الملخص EN

A flame emission apparatus was designed and its performance was evaluated in control of weeds between ridges in faba bean fields in the River Nile State.

The performance in terms of weeding efficiency and economic feasibility was compared with the prevailing methods.

Weeding was carried out at 4 and 6 and 4 weeks after sowing for flaming and hand weeding respectively, chemical control using Purusit plus Stomp in a tank mixture were applied at the recommended rates as pre-emergence herbicides.

The flaming gave a weeding efficiency of 72.4% and 77.8% on grasses and broad-leaved weeds, respectively, the mean of the two seasons.

According to weeds spatial distribution between two ridges, weeding efficiency of flaming and hand weeding at 4 weeks after sowing reached 79 and 87%, respectively on weeds in the furrow, and 66, 52%, respectively at the two sides of the ridge, where as the pre-emergence herbicides gave uniform control that reached a bout 87%.

Comparison of means showed that the yield of flaming at 4 weeks after sowing was comparable with the yield of pre-emergence herbicides and hand weeding in the two seasons.

Economic analysis showed that weeding by flame at 4 weeks after sowing has the highest value of marginal rate of return in the two seasons.

KEYWORD: Pre-emergence herbicides, hand weeding.