Knowledge about distribution and bio availability of micronutrients is critically needed for better production of agricultural products both quantitatively and qualitatively. The study intended to evaluate the micronutrient status, availability and its interaction with soil properties in the vegetable ecosystem. This study looks at the availability of micronutrient metal cation with their diversified soil properties. A total number of 25 surface soil samples were collected from major vegetable growing areas and basic soil parameters such as pH, electrical conductivity, organic carbon, clay, cation exchange capacity, and free CaCO3 were examined. Micronutrients, both total and accessible, were also determined in soil. Zn and Fe deficiencies were found to a tune of 36 and 24 percent respectively in the overall soil samples, respectively. Deficiencies in Mn and Cu were found in extremely small quantities. Calcareous soils contribute to 40% of the soils analysed. Among the different soil properties, pH and CaCO3 showed a significant negative impact on micronutrient bioavailability whereas organic carbon and clay enhances the availability of micronutrients. The total micronutrient was not significantly correlated with the bioavailability of their respective nutrients.
Promising sugarcane clones were studied for their tolerance to post harvest deterioration at different months of crop age (11, 12 and 13 months). The study was carried out up to 84 h after harvest. The sucrose of juice, reducing sugars, pH and cane weight were determined at different intervals of harvest. Sugarcane clones viz., 98 A 168, 97 A 85, 2000 A 213 and 2000 A 226 recorded higher per cent juice sucrose at all months of crop age compared to all other clones tested. 98 A 168 maintained higher juice sucrose up to 13 th months of crop age with less reduction in sucrose. Reducing sugars were found to be higher at 84 h after harvest at 11 th , 12 th and 13 th months of crop age in harvested stored cane. Reducing sugars increased while pH decrease progressively in all the clones with the time lag between harvest to crushing. Increase in reducing sugars was comparatively low in 2000 A 213 and 2000 A 226 compared to other clones. Sugarcane clones 99 A 5 (2.74 %), 98 A 168 (5.55 %), 2000 A 213 (4.34 %) and 2000 A 226 (5.58 %) recorded less reduction in cane weight up to 84 hours after harvest. Loss in cane weight was high at 13 th month of the crop age.
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