One of the biggest problems with nitrogen in the soil is the losses of nitrate (NO) by drainage water due to leaching. To reduce these losses, we m...

One of the biggest problems with nitrogen in the soil is the losses of nitrate (NO) by drainage water due to leaching. To reduce these losses, we must:

I. Establish adequate doses and times of application for each crop.
II. Fertilize in the planting furrow, so that the fertilizer is close to the seeds and the plants can absorb it throughout their development cycle.
III. Control irrigation water, applying enough quantity to avoid crop shortage and excess.
IV. Maintain the terrain with vegetation cover so that the development of plants on the soil promotes greater nitrogen cycling.
V. Addition of low C/N crop residues to activate soil microbiota to immobilize more nitrogen.
a. Only III and V are true
b. Only I, III and IV are true
c. Only II, IV and V are true
d. Only I, II and IV are true
e. Only III, IV and V are true