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Soybean is considered a miracle crop because of its dual qualities,
viz., high protein content and oil in seed. In India, the average
area under soybean cultivation is 7.71 m ha and the productivity of
crop is 1073 kg/ha with total production of 8.27 m t. Even though
it is the cheapest high quality vegetable protein, we are yet to
exploit its full potential. The excess use of chemical fertilizer
spoils the structure of the soil. Therefore, use of chemical
fertilizer alone may not keep pace with time in maintenance of soil
health for sustaining the crop productivity. Farmyard manure (FYM)
and vermicompost are the most important and widely used bulky
organic manures, supply plant nutrients including micronutrients,
improve soil physical properties and increase availability of
nutrients. The importance of potassium in Indian agriculture is
increasing with the passage of time. The crop response to
application of potassium is becoming more frequent and pronounced.
The effect of organic manures and potash on growth yield of soybean
under rainfed condition has not yet been tested for this area. To
bridge the research gaps highlighted above, the present experiment
was carried out.
Soybean Glycine max (L.) Merrill] is considered to be a miracle
crop because of its dual qualities viz., high protein content and
oil. These two parameters in one crop have thus gained considerable
importance in the agricultural economy of the World. It has high
yield potential, wide adaptability, and short duration, very high
nutritional value, having a vast multiplicity of uses as food and
industrial products. Moreover, being a legume, the crop fix large
amount of atmospheric nitrogen in soil. Phosphorus and sulphur play
impotent role in crop production. Phosphorus for the soybean crop
has long been recognized. Phosphorus is a key element in process of
photosynthesis, root nodulation and for growth, yield and quality.
Thus optimum supply of P is necessary for enhance the rate of
protein synthesis in pulse crops. It increased seed yield and
protein content of soybean. Sulphur as secondary plant nutrient is
becoming increasingly important in agriculture as it is the "Master
Nutrient" for all oilseed crops and pulses and is rightly being
called the "Forth Major Plant Nutrient," along with nitrogen,
phosphorus and potassium.
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