Zinc sulphate heptahydrate sold under brand Bhumi Dhan is an effective fertilizer that must be applied to vegetable plants. Follow the instructions on the label and dissolve the fertilizer in the water to create a solution. Zinc mineral is added to the soil that treats the symptoms due to zinc deficiency and promote the creation of chlorophyll and growth of plants. This fertilizer with zinc and sulphur plant nutrients is must if you want a productive crop with high nutritional quality.