Two separate experiments were done with eighteen locally available pumpkin genotypes. First was done under field condition where there was no attempt taken to control the infestation by white fly which is the key vector for transmitting pumpkin yellow vein mosaic virus at Field laboratory. Second experiment was done net at Net House of Department of Genetics and Plant Breeding. About seven genotypes were selected for next year for second experiment which was mechanically inoculated with virus by rubbing of virus sap. The performance of 18 pumpkin genotypes for yield and different yield contributing traits were evaluated and observed that there were significant variations for all the traits studied among the genotypes. Genetic variability analysis revealed that there is significant amount of variability present among genotypes of pumpkin which can be exploited for qualified and high yield pumpkin production. Fruit weight of pumpkin is positively correlated with the yield of pumpkin. Genotypes PK2, PK5, PK6, PK13, PK15, PK16 and PK17 showed resistance against PYVMV under field condition. Genotype PK13 showed resistance against PYVMV both under field condition and artificial rubbing.
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Farmer’s perception of nutrient management for onion bulb production often ignores the soil test basis (STB) which provides essential base line information on the nutrient status of soils. A field experiment on onion (cv. BARI Piaj-4) was conducted during three consecutive years 2016-17, 2017-18 and 2018-19 at the research field of Spices Research Centre (level Barind Tract, AEZ 25), BARI, Shibganj, Bogura, Bangladesh to determine the optimum doses of Nitrogen (N), Phosphorus (P), Potassium (K), Sulphur (S), Zinc (Zn) and Boron (B) for maximization of bulb yield of onion. The experiment was arranged in a Randomized Complete Block Design (RCBD) with three replications having six different levels of fertilizer doses i.e. T1 (Control), T2 (STB dose), T3 (STB + 15% extra of STB), T4 (STB + 30% extra of STB), T5 (STB + 45% extra of STB) and T6 (Farmer’s practice). The nutrient management treatments positively influenced plant height, leaf length, number of leaves plant-1 , bulb diameter, marketable yield and total yield per hectare. The best results with regard to number of leaves plant-1 (5.98), bulb length (7.21 cm), bulb diameter (5.52 cm), single bulb weight (43.07g) and bulb yield (19.83 tha-1 ) were obtained from the treatment T5 . Considering the yield contributing parameters in onion production, the most suitable nutrient management package was STB + 45% extra of STB but the highest marginal benefit cost ratio (7.60) was obtained in T2 (STB dose). N, P, K, S, Zn, B doses of 120, 54, 78, 30, 4.2, 1.5 kg ha-1 , respectively is recommended for maximum onion bulb production in this location. Key words: Yield, onion, nutrient
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The experiment was carried out at Agronomy field laboratory, Bangladesh Agricultural University, Mymensingh, during the period from March to May 2018 to study response of different mungbean (Vigna radiate) varieties to integrated plant nutrient management. The experimental treatment consisted of three varieties, namely- BINA moog-8, BARI mung-8, BARI mung-6 and six levels of fertilizers treatment viz. control (no fertilizer), recommended dose of fertilizer (RDF), 75% RDF + 5 tha-1 vermicompost, 75% RDF + 5 tha-1 cowdung, 50% RDF + 10 tha-1 vermicompost, 50% RDF + 10 tha-1 cowdung. The experiment was laid out in a split plot design with three replications with varieties in main plots and fertilizers in sub-plots. The study noted that BARI mung-6 performed the best among the three mungbean varieties studied. In case of fertilizers treatment 50% RDF + 10 tha-1 vermicompost performed the best and the highest grain yield was obtained from BARI mung-6 when fertilized with 50% RDF + 10 tha-1 vermicompost combinations. However, further studies are necessary considering fertilizers treatment for general combination.
Key words: IPN, variety, performances, mungbean.
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The research work was conducted at the Agronomy Field Laboratory of Bangladesh Agricultural University, Mymensingh during to study the effect of age of seedlings and spacing on the performance of transplanted aus rice cv. BR3. The results showed that the seedling age had significant influence on the various characters under study except 1000-grain weight. The highest number of tillers hill-1 (16.69), number of grains panicle-1 (136.39) and the highest grain yield (4.80 t ha-1) were obtained from the treatment 25-day old seedlings. The lowest straw yield (6.88 t ha-1) was also recorded from the same treatment. Spacing also showed significant effect on the studied characters except panicle length and 1000-grain weight. The highest grain yield of aus rice (1.15 t ha-1) were obtained from 15 cm x 15 cm spacing. Results of the study also noted that 25-day old seedlings with 15 cm x 15 cm spacing may be practiced to the farmer level as well as obtain optimum grain yield from transplanted aus rice cv. BR3.
Key words: Seedling age, spacing, aus rice.
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Twenty soils were collected on April 2024 covering 10 from Northern side and 10 from Southern side at 0-15 cm depths from IUBAT’s Rajendrapur Agricultural Research Station. The soils were dried at IUBAT’s Lab.1, ground, sieved and labeled properly. Soil health covering the physical (soil colour, land type, and particle density) and chemical (pH, organic carbon, organic matter, total N, P, K, S, Ca, Na, EC, and HCO3) properties were studied at Humboldt Soil Testing lab, Bangladesh Agricultural University (BAU), Mymensingh-2202. The morphological description of the soils reported in Table 3. Soils were red in colour with clay, silty clay and sandy clay, clay loam type with particle density of 2.388-2.568 g/cc. pH values of the 20 soils varied from 4.60 to 5.45, organic carbon 0.4-1.15%, organic matter 1.11-2.47%, total N 0.067-0.112%, P 2.18-30.72(ppm), K(0.130-0.269 meq/100g), S (6.15-25.76 meq/100g), Ca (0.760- 1.956 mg/100g), Na (0.122-0.184 mg/100g), EC (50.4-250 µs/100g), and HCO3 (244.0-427.0 µs/cm). Results showed minor to major variation of pH, organic carbon, organic matter, total-N, P, K, S, Ca, Na, EC and HCO3 where standard deviations (SD) produced the depth of variations within the 20 samples covering 10 from Northern and 10 from southern regions. Here high land soils were acidic, rich in forest vegetation require proper management through using of compost, green manuring, water hyacinth, decomposed household wastes for 3-5 years for proper cultivation of rice, other crops and vegetables, and for proper using of land for agricultural research purposes.
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