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Residual effect of boron on quality and post harvest parameters of knolkhol (Brassica oleracea Var.Gongylodes L.) in coastal regions of odisha

A long term field experiment was started during 2012-13 at E block of central research station, under AICRP on Micronutrient, O.U.A.T, Bhubaneswar to standardize the dose and frequency of boron application for rice-knol khol cropping system where boron is applied to first crop and Knol khol gets residual boron. In the present investigation residual effect of different graded doses of boron and its frequency of application on quality and post harvest parameters of Knol khol for the year 2017-18 was studied. The experiment was laid out in a Factorial Randomized Block Design with three replications and four different doses of boron (0.5 kg/ha, 1.0 kg/ha, 1.5 kg/ha and 2.0 kg/ha) at three different frequencies (application of boron once, alternate year and every year) were applied. The results revealed that the maximum values of quality and post harvest parameters (viz., Total soluble solid content of knob (6.7oBrix), Ascorbic acid content of knob (78.2 mg/100g), Firmness of knob (7.9kgf), Dry matter content (9.21%), Duration of maximum retention of shelf life of knob (5.03 days), Percentage of marketable knobs (96.1%) with no knob cracking were recorded with residual effect of boron @ 1.5kg/ha in every year application. The knob cracking increased as the Boron availability decreased. | Residual effect of boron on quality and post harvest parameters of knolkhol (Brassica oleracea Var.Gongylodes L.) in coastal regions of odisha