Question

After red gram, maize and corn are cultivated because
A. They increase fertility of soil
B. They fix ${N_2}$ in soil
C. They enhance growth of plant
D. They prevent disease caused by spotted bollworm

Answer 1

Hint: A crop is any cultivated plant, fungus, or alga that is harvested for food, clothing, livestock folder, biofuel medicine or other uses. Major crops include sugarcane, pumpkin, maize, wheat, cotton, Etc. Intercropping is one type of cultivation of two or more crops at the same time on the same field.

Complete Answer:
- Intercropping was practiced as insurance against crop failure under rainfall conditions. Main objective of intercropping is judicious usage of resources such as land labor and inputs. This system utilizes resources sufficiently and their productivity is increased.
Example of intercropping is onion and cabbage cultivating the same land, sorghum and pigeon pea.
- Intercrop needs for stability, reduced chemical use, and extra yield. Types of inter cropping are mixed intercropping, row intercropping, strip intercropping, relay intercropping.
- After red gram, maize, corn is cultivated because intercropping is used to get greater yield on a given piece of land by marking usage of resources or ecological processes that would not be utilized by a single crop.

Thus, the option (A) is correct.

Note: Advantages of intercropping give higher income per unit area than sole cropping reduces soil runoff. Intercropping economizes water, it maintains soil fertility. Example pearl millet + red grams. Maize is also known as corn. Pigeon pea is known as red gram. Maize is cereal grain.