Advertisements
Advertisements
Question
What is the advantage of using insect resistant varieties?
Solution
Advantage of using insect-resistant varieties is that it reduces the use of insecticides. This will help in maintaining the soil fertility for a longer period of time, as harmful chemicals present in insecticides will not be added to the soil. It will also reduce the cost of crop production by removing the expenditure of buying insecticides.
APPEARS IN
RELATED QUESTIONS
Name three most important nutrients required for plant growth.
Choose plant’s micronutrients and macronutrients from the following Iron, Chlorine, Sulphur, Copper, Nitrogen, Calcium, Manganese, Potassium, Zinc, Magnesium, Molybdenum, Phosphorus.
How does chemical nature of the soil change due to continued use of chemical fertilizers ?
Distinguish between farmyard manure and compost manure.
Why is irrigation essential ?
Write about three main criteria which should be considered while selecting the crops for rotation?
Classify plant diseases depending upon their occurrence and transmission.
Distinguish between fertilizer and manure. Give suitable examples. What are advantages and disadvantages of using fertilizer?
Explain the mechanism of compost formation.
Differentiate between the following
Mixed cropping and Intercropping