Nutritional status of healthy and yellow leaf disease affected gardens of arecanut in Sringeri taluk of Karnataka state.

摘要

The fertility status of selected healthy, moderately yellow leaf disease (YLD) affected and severely YLD affected gardens of arecanut in Sringeri taluk of Karnataka state and nutrient composition of corresponding palm leaves were examined. It was found that all the soils were generally acidic in nature, low in soluble salts content and adequate in organic carbon irrespective of prevalence or absence of the disease. The available major, secondary and micronutrients were adequate except magnesium in all the gardens. However, available nitrogen and magnesium accumulation were greater in soils of healthy gardens and tend to diminish with the intensity of incidence of YLD. While, the reverse trend was observed for phosphorus, potassium, sulfur, manganese and copper content. The nutrient composition of palm leaves of healthy, moderately and severely YLD affected gardens showed a gradual decline with the onset of YLD. The healthy palm leaves were quite high in copper content while the leaves of diseased palms were deficient in nitrogen, magnesium and manganese contents.