Crops & Cropping Patterns, Food grains production and Management

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46. Which of the following is an essential micronutrient required for plant growth and is commonly provided to crops in the form of chemical fertilizers?
a) Nitrogen
b) Calcium
c) Zinc
d) Phosphorus

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47. Which of the following is an essential micronutrient required for plant growth and is commonly provided to crops in the form of chemical fertilizers?
a) Nitrogen
b) Iron
c) Potassium
d) Phosphorus

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48. Which of the following is an essential micronutrient required for plant growth and is commonly provided to crops in the form of chemical fertilizers?
a) Nitrogen
b) Calcium
c) Zinc
d) Phosphorus

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49. Which of the following is an essential micronutrient required for plant growth and is commonly provided to crops in the form of chemical fertilizers?
a) Nitrogen
b) Iron
c) Potassium
d) Phosphorus

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50. Which of the following is a method of crop management that involves the application of organic matter to improve soil fertility?
a) Crop rotation
b) Mulching
c) Green manuring
d) Intercropping

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