The correct answer is: a) High organic matter content.
Soil fertility is the ability of a soil to sustain plant growth. It is determined by a number of factors, including the soil’s texture, structure, pH, and nutrient content. Organic matter is one of the most important factors in soil fertility. It helps to improve the soil’s structure, water retention, and nutrient-holding capacity. It also provides a habitat for beneficial soil organisms.
Nagaland is a state in northeastern India. It has a humid subtropical climate with an average annual rainfall of about 2,000 mm. The state’s soil is predominantly acidic and low in organic matter. This is due to the state’s high rainfall, which leaches nutrients from the soil. In addition, the state’s traditional farming practices, which involve the use of slash-and-burn agriculture, have also contributed to the decline in soil fertility.
To improve soil fertility in Nagaland, it is important to increase the amount of organic matter in the soil. This can be done by adding compost, manure, or other organic materials to the soil. It is also important to practice sustainable farming methods that do not damage the soil. These methods include crop rotation, cover cropping, and mulching.
Low rainfall (option b) is not a factor that affects soil fertility in Nagaland. In fact, the state’s high rainfall is one of the factors that contributes to the decline in soil fertility.
Intensive cultivation (option c) is a farming practice that involves planting crops on the same land year after year. This practice can lead to the decline in soil fertility, as the soil becomes depleted of nutrients.
Modern agricultural practices (option d) can also lead to the decline in soil fertility, as they often involve the use of chemicals that can damage the soil.
In conclusion, the correct answer to the question “Soil fertility in Nagaland is dependent on” is a) High organic matter content.