2007, July (Vol. 1, No. 1)
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Item POTENTIALITY OF SEED TREATMENT WITH SOME PLANT EXTRACT TO CONTROL BIPOLARIS LEAF BLIGHT (Bipolaris sorokiniana) AND INCREASING YIELD OF WHEAT(Sher-e-Bangla Agricultural University Research System, Sher-e-Bangla Agricultural University, Dhaka, Bangladesh, 2007-07) Islam, M. A.; Aminuzzaman, F. M.; Islam, M. R.; Ullah, M. W.A study was undertaken to evaluate the efficacy of plant extracts to control Bipolaris leaf blight (Bipolaris sorokiniana) and increasing grain yield of wheat. Water extracts of neem (Azadirachta indica). 'allamanda'(Allamallda cathartica), 'mehedi'(Lawsonia alba) leaves, 'bishkatali' (Polygonum hydropiper) shoot, 'garlic'(Allium sativum) clove, onion (Allium cepa) bulb, black cumin (Nigella sativa) seed, and ginger (Zingiber officinalis) rhizome were prepared at a concentration of I :2. Wheat seeds were treated with individual plant extracts. Seeds were also treated with Vitavax-200 for comparison. It was found that all the plant extracts except mehedi increased seed germination on blotter. A remarkable reduction in incidence of seed borne Bipolaris sorokiniana was achieved with the botanicals. The disease severity was the lowest under Vitavax-200, followed by bishkatali and garlic extract. The highest disease severity was recorded under control. The increasd grain yield over control was achieved with extracts of onion, garlic, black cumin, ginger, bishkatali and neem. The efficacy of plant extracts to decrease disease severity and to increase zrain vield was more or less similar to that of Vitavax -200.Item PROBLEM CONFRONTATION IN MUSHROOM CULTIVATION OF THE CULTIVATORS(Sher-e-Bangla Agricultural University Research System, Sher-e-Bangla Agricultural University, Dhaka, Bangladesh, 2007-07) Bashar, M. A.; Ali, M. S.; Islam, M. R.The purpose of the study was to determine the problems confrontation of the cultivators in mushroom cultivation and to explore the relationship between the selected characteristics of the cultivators and their problem confrontation in mushroom cultivation. Cultivators 16 problems in mushroom cultivation were considered for the study. The study was conducted in Savar upazila under Dhaka district. Data were collected from randomly selected 100 cultivators by using an interview schedule. Scale score was used to determine cultivators problem in mushroom cultivation while a Problem confrontation Index (PCI) was used to make comparison among the 16 selected problems. Pearson's product Moment Correlation was used for statistical test. Majority (65 %) of the cultivators were found confronted medium problem, while 24 percent of the cultivators confronted low problem and II percent confronted high problem in mushroom cultivation. Among the selected characteristics of the cultivators education, land possession, mushroom cultivation area, annul family income, organizational participation, cosmopoliteness, extension contact, training exposure in mushroom cultivation and mushroom cultivation knowledge showed significant negative relationship with their problem confrontation and other two variables namely family size and experiences in mushroom cultivation had no significant relationship with problem confrontation in mushroom cultivation. On the basis of Problem Confrontation Index (PCI) boundness of the cultivators to supply commodities to middle man in low price ranked first followed by high price of spawn, complexity to get credit for mushroom cultivation, low demand in the local market, high rate of interest for credit. Lack of knowledge on proper doges of pesticide for pest control of mushroom ranked last.Item EFFECTS OF IRRIGATION WATER AND SOIL ADDED ARSENIC ON GROWTH AND YIELD OF CROPS IN RICE-RICE CROPPING PATTERN(Sher-e-Bangla Agricultural University Research System, Sher-e-Bangla Agricultural University, Dhaka, Bangladesh, 2007-07) Khan, M .A.; Islam, M. R.; Panaullah, G. M.; Duxburry, J. M.; Jahiruddin, M.A field Experiment was conducted at Bangladesh Agricultural University Farm during January 2004 to December 2005 in order to examine the adverse effect of As in rice. Boro-T, Aman-Boro-T. Aman rice crops were grown in sequence. There were five treatments consisting of 0, I, 2 ppm As added with irrigation water, 10 and 20 ppm As added to soil. Arsenic treatments were applied in Boro crops. The As contamination of soil either through irrigation water or directly to soil significantly affected the yield and yield components of Boro and T. Aman rice. Application of As added to the Boro rice had significant residual effects on the T. Aman rice. The irrigation water and soil added As depressed the plant height, number of tillers, filled grains panicle", 1000-grain weight, straw and grain yields of Boro and T. Aman rice. The grain yield reduction over the cropping seasons and treatments varied from 8.2 to 80% as compared to control treatment.