Browsing by Author "NAHAR, NAZMUN"

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    EFFECT OF NITROGEN AND PHOSPHORUS ON THE GROWHT AND YIELD OF OKRA
    (DEPARTMENT OF HORTICULTURE, SHER-E-BANGLA AGRICULTURAL UNIVERSITY, DHAKA-1207, 2014-12) NAHAR, NAZMUN
    The experiment was conducted at the Horticulture Farm of Sher-e-Bangla Agricultural University, Dhaka during the period from March - August 2014, to find the effect of nitrogen and phosphorus on growth and yield of okra. BARI Dherosh-1 was used as test crop in the experiment. The experiment was laid out in Randomized Complete Block Design with three replications and was consisted of two factors. Nitrogen fertilizer as N 0 : 0, N 1 : 115, N 2 : 135 and N : 155 kg N/ha and Phosphorus fertilizer as P 0 : 0; P 1 : 70; P 2 : 90 and P 3 3 : 110 kg P 2 O /ha respectively. All the parameters were significantly influenced by different levels of nitrogen and phosphorus. Due to the effect of nitrogen, the highest yield 2 and the lowest yield 0. 5 In case of phosphorus, the highest yield 2 and the lowest yield For combined effect, the highest yield 2 P and the lowest yield 0 P 0 . So 135 kg N/ha with 90 kg P 2 O /ha was the suitable combination for okra production. 5 2 0.
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    POSTHARVEST ANTIMICROBIAL TREATMENTS WITH ORGANIC ACIDS TO IMPROVE THE SHELF LIFE OF TOMATOES
    (DEPARTMENT OF HORTICULTURE, 2021) NAHAR, NAZMUN
    Tomato (Lycopersicon esculentum Mill.) is one of the most economically important fruit vegetable facing greater problems in storage because of its perishable nature and reduction of quality. They are susceptible to various microbial infections, both pre- and postharvest. The present research was conducted to investigate the effects of postharvest treatments with citric (2%), benzoic (0.2%) and sorbic (0.2%) acids on physicochemical, biochemical and microbiological evolution of fresh tomatoes. Samples were evaluated initially at 3-day interval for maintained better quality in terms of water loss, titratable acidity (TA), total soluble solids (TSS), pH, lycopene, ascorbic acid content, and surface microbial load for two weeks storage time. Chemical treatments significantly reduced the microbial growth on the fruit surface throughout the storage period as compared to the control samples, but they caused a significant increase in moisture loss (sorbic acid > citric acid > benzoic acid > water). Antimicrobial effects of chemical treatments were more noticeable than their biochemical effects. The total titratable acidity, total ascorbic acid content and total lycopene content of fruits increased continuously in the first 9 days of storage but decreased thereafter. At the end of the storage period, the citric acid treated tomatoes had significantly higher titratable acidity, ascorbic acid and lycopene activity as compared with the control samples. Sorbic acid which allowed only the growth of the Rhizopus mold during two weeks of room temperature storage compere to other organic acids. However, at the end of the storage period, samples treated with citric acid is the best preservatives as compared with control samples.
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    RESPONSE OF MUNGBEAN TO ZINC, BORON AND MOLYBDENUM APPLICATION
    (DEPT. OF SOIL SCIENCE, 2017) NAHAR, NAZMUN
    A field experiment was conducted at Sher-e-Bangla Agricultural University Farm, Dhaka during the period from April 2017 to July 2017 to study the response of mungbean (BARIMung-6) to zinc, boron and molybdenum application.The single factor experiment was consisted with eight treatments viz., T 1 = Control, T 2 = Zn 2.0 kg ha -1 , T 3 = B 1.5 kg ha -1 , T 4 = Mo 1.0 kg ha = Zn+B, T 6 = Zn+Mo, T 7 = B+Mo and T = Zn+B+Mo.The experiment was laid out in Randomized Complete Block Design (RCBD) with three replications. Results showed that plant height, number of branches plant -1 8 , pod length, number of pods plant -1 , number of seeds pod , grain yield, stover yield, biological yield, harvest index and available phosphorous and exchangeable potassium content of post-harvest soil was significantly influenced by zinc, boron and molybdenum application.Among the different treatments T (2kg Zn+1.5 kg B+1 kg Mo) treatment produced tallest plant (44.40 cm), highest number of branches plant 8 (9.5), maximum number of pods plant -1 (13.0), maximum length of pod (9.60 cm), maximum number of seeds pod -1 (10.00), highest 1000 grain weight (50.80g), highest grain yield (1.40 t ha ) and maximum harvest index (52.84%).This combination also exhibited highest pH (6.05), organic matter (1.39 %), total nitrogen (0.092%), available phosphorous (23.45 ppm) and exchangeable potassium content (0.24 meq/ 100 gm soil) of post-harvest soil. On the other hand, T (Control) treatment produced lower values in all cases except stover yield and harvest index. From the growth, yield and post-harvest soil analytical reports, it is apparent that the combination of 2kg Zn+1.5 kg B+1 kg Mo (T8) was suitable for mungbean cultivation