Dear Sri Nikhil,
As far as beans are concerned, is it French beans or cluster beans( goru chikkudu/ guwar/ goru kaya ). If it is cluster beans, you can go for the crop even in summer.
If it is French Beans , my sincere advise to you is ’ not to go for it’ Iin March. Up to my knowledge, it will not come fruitfully in our temperatures in March. It is a fact that Bengaluru temp is at around 33 in February end it self and itay go to even above 38 or more this year.
French beans comes well in temp between 18 to 32(max) degrees. Hence I opine that it may be a risk for cropping French beans in march month. This is my sincere opinion.
As far as Bendi (lady finger,Okhra ) , you can comfortably go for sowing the seeds in march month. If you like, you can go for open farming, with shade net (50%) and/or by sowing now, the Agisse/Avise seedlings @ a distance of 6 ft in alternative rows. These seeds are very cheap and will cost you nominal ,less than rs 200/_ per acre. They have to be sown at least 20 to 25 days before the bendi crop.They provide 25 to 30% shade to Bendi/Okhra/lady finger , plants.
This is a Very short term crop and you have to take care of sucking pest in the first 60 days carefully. Flowers starts at 35 to 40 days and Bendi comes to first yield by 50 to 55 days.
Make sure to harvest at right time ( or 1 day before right time ), to get command able price.
Keep Light traps, yellow/blue sticky traps and regular sprays of Neem oil with 10,000 ppm of Azhadirictin content, at regular intervals, to control sucking pests, and also yellow mosaic virus, which generally doubles with sucking pests.
As far as possible, use maximum Organic fertilisers, FYM, cakes, Micro Organisms etc along with water soluble fertilisers and insecticides also.
Wish you all the best, g.p.Rao, farmer