The study was conducted to manage mango pests with maintaining fruit quality through fruit bagging technology. This research was executed from April, 2019 to August, 2019 for ensuring safe mango production with minimum use of pesticides. The fruits were bagged at the age of 45 to 50 days with different types of bags. Four treatments viz: No bagging (control), Brown paper double-layered bag; White paper single-layered bag; Transparent polythene bag were included. Apparently, brown and white paper bag showed maximum fruit weight (557.90 g and 498.67g), fruit length (10.77 and 10.67 cm), fruit diameter (24.90 and 24.67 cm) and pulp weight (465 and 453 g) respectively, compared to control treatment while polythene bag gave the minimum result. Meanwhile in bagging fruit chemical parameters of ascorbic acid, reducing and non reducing sugars, total sugars, total soluble solids, percent of citric acid and β-carotene were improved over polythene bag and control. The fruit color was non-persistent in brown paper bag. The sensory attributes of color and flavor in fruits of brown bags were improved over control. Fruit retention was significantly enhanced with brown paper bag (88.67%), white paper bag (87.00%) and control (82.33%) compared to polythene bag (61.33%). Fruits with brown paper bag gave the highest shelf life up to 12.67 days with the lowest weight loss and good physical appearances as against 10.67 days of control fruits. The infestation of fruit fly also had reduced by pre-harvest fruit bagging. These results indicate that fruit bagging can enhance fruit quality and shelf life of mango cv. BARI mango-4 through reduction insect-pest attack.

Physiological and structural changes of coconut plants at different growth stages and plantation sites under low temperature conditions was investigated during 1997-98, 2002-03, 2005-06 and 2009-10 in the northern region of Bangladesh. Three growth stages viz. < 7, 7-15 and > 15 years and three locations viz. road side, near pond and near drain were selected for this study. Leaf area damage with characteristics lesions categorized into mildly damaged, moderately damaged and dead plants. Age and planting site revealed very significant differences. The highest percent of dead (49.84-58.49 %), moderately damaged (37.20-46.21 %) and mildly damaged plants (65.70-74.79 %) were found in road side, while the highest percent of dead plants (39.93-45.58 %), moderately (20.18-26.68 %) and mildly damaged plants (69.46-70.37 %) were found in above 15 years old plants. The lowest percent dead of plants (20.82, 18.27 and 19.55 %) were found in pond side and (11.74, 12.53 and 13.31 %) in the 7-15 years old plants. The mean temperature, sunshine hours and total precipitations remained below 16.88 °C, 10.25 hours and 11.7 cm, respectively during

Fruit bagging is a newly developed technology, widely used by the farmers, easy practice, and environment friendly and useful for high quality mango production in Bangladesh Four treatments were included in this experiment namely non-bag (control); white polythene bag; single layered white paper bag and double layered brown paper bag. The fruits were bag at 35, 45 and 55 days after fruit set. The experiment was carried out in the Randomized Complete Block Design with three replications. Fruit bagging has direct effect on fruit length, diameter, fresh weight and pulp weight (9.49cm, 8.31cm, 295.8g and 267.4g, respectively) while minimum was recorded in non-bagged control fruits (7.75cm, 6.91cm, 211.1g and 182.0g, respectively) at 35 and 45 days. In addition, the total sugar, reducing sugars, total soluble solid, ascorbic acid, pH and β-carotene were improved over control fruits. Brown paper bags are competent to change the fruit color. Brown paper bag extended shelf life up to 9 days with premier sensory quality as against 5 days of non-bagged control fruits.Considering the results, double layered brown and single layered white paper bagged fruits performed the best in respect of quality parameters and extending shelf life in mango cv. Mishribhog.