Nutrient Management –
As pigeon pea is a leguminous crop so it does not require more fertilizer.
It requires very little nitrogen because the bacteria found in its roots absorb nitrogen from the atmosphere and transfer it to pigeon pea crop.
The doses of fertilizers should be given on the basis of soil test.
At the time of sowing, it requires 18-20 kg nitrogen, 45-50 kg phosphorus, 20 kg potash and 20 kg sulphur per hectare. Once in three years, apply 25 kg zinc sulphate per hectare before the last ploughing gives good yield.
It is beneficial to use seed drill while applying the nutrients.
Chemical fertilizers should not be given by sprinkling because by doing this the main crop gets less and weeds get more benefits.
Weed Management –
Use of 1 kg per hectare of pendimethalin before growing crop and weeding & hoeing after 50 days of sowing is better control of weeds. Before growing the crop, spraying of 0.75 kg Pendimethalin and Imazethapyr @ 75 gm per hectare at 20 days of crop stage gives more benefit.
Keep in mind to maintain optimum soil moisture condition during herbicide application.
After sowing, the growth of pigeon pea as compare to weeds is quite slow during first 45-60 days. Because of the frequent rains, weeds grow faster than the main crop. If weeds are not controlled during this period, they cover the pigeon pea plant.
Sometimes it’s very difficult to control weeds mechanically (with the use of implement). Because of frequent rains due to which soil does not come in physical condition to permit use of the implements. In this case, use of herbicides to control the weeds becomes more important.
Generally farmers allow weeds to grow until they are able to be pulled up by hand, but by that time the weeds have done a lot of damage by competing with the crops. Therefore, the crop should be kept weed free from the beginning.
Use of pure and clean seeds at the time of sowing can prevent the growth of weeds.