Deficiency Symptoms :

The intensity of green is greatest in leaves of potassium deficient plants. The leaf size and stem girth is reduced. Marginal and tip burning of leaves not visible deficiency

Corrective Measure:

Apply organic manure during May-June on surface layer of soil. Apply 120 g of N in the form of leaf mould or FYM (at least 12 kg) in two split doses in June-July and September-October. application of 40-60 g of nitrogen, 20-30 g of phosphorus and 60-100 g of potashto each vine per year besides organic manures such as vermicompost, oil cakes, poultry manure, wood ash, etc.