Question: query regarding management of wilt in french bean. 
Answer: please apply and blitox-50 in the root portion and also spray in the affected plants 3gram/ liter of water 3 times at 3 days interval in the evening time in the absence of rain. if you are not getting the blitox-50 then do the test for bacteria. if the water remain clean then you have to use trichoderma viridi 10 gram/liter or glyodin/ carboxin 3gram/liter of water or if the water become yellowish white then you have to use streptocyclin/streptomycin 2gram/10 liter of water.