Influence of components of INM [integrated nutrient management] on fruit yield and quality of acid lime in red calcareous soil.

摘要

A study was conducted in Andhra Pradesh, India, during the 1997/98 and 1998/99 rabi seasons, to determine the influence of the components of integrated nutrient management on fruit yield and quality of acid lime (Citrus aurantiifolia) in red calcareous soil. The fruit yield of acid lime was significantly and positively influenced by the application of iron pyrites [pyrites] (IP at 100, 200 and 300 g/plant), pressmud (PM at 4 and 8 kg/plant), farmyard manure (FYM at 25 and 50 kg/plant) and VAM (150 g/plant), either individually or in combination, over the control in both years. Among the treatments, the integrated use of 200 g IP/plant along with 25 kg FYM + 2 kg PM/plant outyielded the other treatments in both direct and cumulative effects. The total soluble solids was not significant by the direct effect treatments, while the cumulative effect treatments in the second year was significant. The acidity of the different treatments increased significantly in direct and cumulative effect treatments over the control. FYM at 50 kg/plant, alone, gave the highest cumulative effect (18 and 24 months) for acidity, whereas 25 kg FYM + 2 kg PM + 200 g IP/plant recorded the highest acidity at 12 months of direct effects.