If we grow wheat during kharif season the productivity would be minuscule and would not be profitable for the farmers because,the wheat crop needs mild to moderate temperature and frost free days along with irrigation but no water logging.
i.e.they need winter season.In the kharif season; which coincides with the peak summer months in India, temperature is at its peak which is not suitable for wheat. Moreover, during rainy season lot of water accumulates in fields which would be harmful for wheat crop.
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If wheat is sown in the kharif season, the productivity would less and wheat need more ammount of water but in kharif season medium ammount of water.