- Of the several inputs essential for
crop production, the importance of fertilizers is perhaps next only
to water, Maize responds well to fertilizers.
- Widespread deficiency of N, P, K and
micronutrients like zinc, iron and copper, show the need to apply them
for getting optimum yield of maize.
- A crop producing 62.7 quintals grain
yield per hectare is estimated to consume 168 Kg N, 57 Kg P205, 135
Kg K20 and 30 Kg Zn.
- These nutrients are to be replenished
through balanced fertilizer application and integrated use of nutrients.
These principles are not new to crop production but assumes significant
importance in view of steep hike in fertilizer prices and abolition
- With the development of scientific farming,
commercial and food crops are used in rotation with maize instead of
green manure crops thus reducing chance of natural soil recuperation.
- By normal cultivation practices followed
by a farmer, all the essential nutrients other than N,P,K and Zn are
replenished and maintained.
- Hence there is need to get acquainted
with N,P,K and Zn nutrition and their management as they are not replenished
in sufficient quantities to produce optimum corn yields.