DRIS, a precision system for diagnosis of nutrient deficiencies in chilli

Abstract

The leaf nutrients content of Byagdi chilli crop was assessed by using Diagnosis and Recommendation IntegratedSystem (DRIS). The DRIS norms, which showed higher variance and lower co-efficient of variation were found to havegreater diagnostic precision. Based on the concept DRIS, the locations were bifurcated into two groups as high yielding andlow yielding categories by taking cut off yield as chilli 8.50 q ha-1. Accordingly, 115 locations were high yielding andremaining 60 locations were low yielding. DRIS indices were worked out for leaf samples of low yielding locations. Basedon these indices the order of nutrients requirement was K>S>Mg>P. This indicated that potassium was highly limiting,followed by sulphur further followed by magnesium. Phosphorus nutrient was least limiting the yield.