A complex mixture of brown or dark brown amorphous and colloidal substances modified from the original tissues or synthesized by various soil organisms is referred to as
Which of the following is a bio-fertilizer?
The most widely used source of nitrogen in agriculture in India is
Most of the plants obtain nitrogen from soil in the form of
Which of the following is a micro nutrient?
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Solution
Micro Nutrients Micro nutrients are those elements essential for plant growth which are needed in only very small (micro) quantities. These elements are sometimes called minor elements or trace elements but use of the term micronutrient is encouraged by the American Society of Agronomy and the Soil Society of America.
The micronutrients are boron (2), copper (Cu), iron (Fe) chloride (Cl), manganese (Mn), molybdenum (Mo) and zinc (Zn).
Richest source of nitrogen is
The major nutrients are
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Solution
Major Nutrients The primary nutrients are nitrogen (N), phosphorus (P), and Potassium (K). These major nutrients usually are lacking from the soil first because plants use large amounts for their growth and survival.
Kharia disease of rice is due to the deficiency of
The most concepicuous chemical change that take place when soil is flooded is reduction of
Blossom end rot disorder in tomato has been found to be caused by the deficiency of