http://archive.saulibrary.edu.bd/handle/123456789/5601 2026-09-30T00:30:56Z 2026-09-30T00:30:56Z Hossain, H.M.M. Tariq http://archive.saulibrary.edu.bd/handle/123456789/5629 2026-09-29T04:19:56Z 2026-06-01T00:00:00Z

REPRODUCTIVE FITNESS AND PHENOLOGY RESPONSES OF SAU PERILLA-1 TO AGROMETEOROLOGICAL INDICES OBSERVED ON DIFFERENT TRANSPLANTING DATES Hossain, H.M.M. Tariq Executive Summary SAU Perilla-1 (Golden Perilla BD) is a latest oil crop variety enriched with Omega-3 fatty acid, which is introduced by Sher-e-Bangla Agricultural University in 2021. The seed contains ⁓40% edible oil and is recommended for growing in Kharif-2 season when no oil crop is grown in Bangladesh. However, for Robi seasonal trail, the crop was sown on 21 November (D1), 28 November (D2), 05 December (D3), and 12 December (D4) with 40 cm × 40 cm (S1), 40 cm × 30 cm (S2), and 40 cm × 20cm (S3) planting configurations maintained in each of the dates. The research was aimed mainly on thermal effects on phenological parameters (germination, flowering and biological yields) as evaluated by the Growing Degree Days (GDD) and Heat Use Efficiency (HUE) over stover yield and grain yield of SAU Perilla-1. The results revealed that sowing dates had significant effect on the yield variations as evaluated by the studied parameters of the crop. However, D2 showed the uppermost level of seed weight per plant. The highest seed weight per plant was recorded due to the effect of S3 and that of the value touched at the bottom for S2. The maximum seed weight was recorded in D2S3 and that of the lowest was found in D4S3. The GDD values increased with increasing days to germination of seeds. Sowing date strongly influenced the GDD requirement for germination of SAU Perilla-1. When the crop was sown on D1, 75 days were needed accumulating 1670.4℉ for flowering of the crop. The GDD requirement was highest (1802℉) in D4 sowing treatment, when 82 days were required to initiate flowering. The GDD requirement declined as sown on D2 and D3 dates. The results indicated that the variation in temperature prevailed under different dates of sowing. HUE was higher in producing stover plant when sown on 21 st November (D1) with second highest grain production (4.10 mg/plant/℉/Day). Contrary to that the highest HUE for grain (8.13 mg/plant/℉/Day) was yielded in D2 sowing date although the stover production was reduced from that of D1 treatment found. When sowing is delayed, either of grain and stover synthesis were lowered down as found in D3 and D4 treatments.

2026-06-01T00:00:00Z Amin, A.K.M. Ruhul http://archive.saulibrary.edu.bd/handle/123456789/5628 2026-09-29T03:17:16Z 2026-06-01T00:00:00Z

RESPONSE OF PERILLA (Perilla frutescens) UNDER DIFFERENT NUTRIENT MANAGEMENT PRACTICES Amin, A.K.M. Ruhul Executive Summary An experiment was conducted in the research field of Sher-e-Bangla Agricultural University, Dhaka 1207 during the period from July, 2022 to November, 2022 to find out the effect of different organic manure and levels of inorganic fertilizer on growth, yield and oil content of SAU Perilla-1. The experiment comprised of two factors viz. Factor A: Organic manure – 5 (Main plot)- i. OM 0 = Control, ii. OM 1 = Cowdung, iii. OM 2 = Vermicompost, iv. OM = Decomposed rice straw and v. OM = Poultry litter; Factor B: Fertilizer Level - 4 (Sub Plot)- i. F 0 = No fertilizer (Control), ii. F 4 = 75% Recommended dose of fertilizers (RDF), iii. F 2 = 100% RDF and iv. F 4 1 = 125% RDF. The experiment was laid out in a split plot design with three replications. Data were collected on different aspects of growth, yield attributes and yield of perilla. Results revealed that Poultry litter (OM (OM 2 ) gave the highest grain yield (1385.7 and 1249.2 kg ha -1 4 ) and vermicompost , respectively) which may be attributed to the highest number of branches plant -1 , seeds branch -1 and 1000 seed weight in these organic manure treatments (OM 4 and OM ). These two treatments also resulted with the highest oil percentages. Considering chemical fertilizer treatments, F 2 (125% higher than recommended dose of fertilizer) showed the highest seed yield (1323.4 kg ha 4 ) but seed yield (1304.1 kg ha -1 ) from F (Recommended dose of fertilizer) was not statistically different from F 4 2 treatment. These two treatments (F 4 and F ) showed the highest and statistically similar number of branches plant -1 , seeds branch -1 2 and 1000 seed weight. Oil percentage (33.71 and 33.20%, respectively) also found higher in F 4 and F treatments. Regarding the combined effects of organic manure and chemical fertilizer, the Poultry litter +125% higher than recommended dose of fertilizer (OM 4 × F ) was shown up the highest values of parameters (Branches plant -1 . Seeds branch -1 3 , 1000 seed weight, seed yield and oil percentage) under study. However, OM 4 × F 3 and OM 4 × F 3 also showed similar results with OM 4 × F 3 . Considering the above results, poultry litter or vermicompost coupled with recommended dose of fertilizer may be suggested to cultivate SAU Perilla-1 for achieving higher seed yield and oil percentage in our country.

2026-06-01T00:00:00Z Ullah, Md. Jafar http://archive.saulibrary.edu.bd/handle/123456789/5627 2026-09-29T03:13:53Z 2026-06-01T00:00:00Z

OPTIMIZING PLANTING CONFIGURATION FOR LOCAL MAIZE VARIETIES OF THE HILLY AREAS OF BANGLADESH Ullah, Md. Jafar Executive Summary:The study was made at the Dighinala Upazilla of Khagrachori district during the Rabi season of 2022-23 to evaluate the performance of different pre-selected improved local maize varieties under varying planting configurations. Treatments comprised three planting configurations such as S50 (row to row distance 50 cm), S60 (row to row distance 60 cm) and S70 (row to row distance 70 cm) and eight varieties, namely V1 (YellowWhiteGrey), V2 (BlackRed), V3 (Black), V4 (PurplePink), V5 (CopperRed), V6 (GreyWhite), V7 (White) and V8 (Red). Results showed that varieties, planting configuration and also their interactions had significant effect on plant height, number of leaves per plant, leaf area, dry weight, cob number weight per plant, grain weight and harvest index. The variety treatment V6 showed significantly the highest grain yield per hectare (5.565 t) which however, was not significantly higher than those of V2, V4, V5 and V7. The planting configuration S70 had the maximum grain yield per hectare (5.217 t) which was statistically at par with that of S60 (5.017 t). The variety treatment V1 produced the lowest grain yield (4.607 t). The interaction treatment V6S70 had the highest grain yield per hectare (5.713 t) which was not significantly higher than those of V5S70 and V6S60. The highest grain yield of V6S70 interaction was attributed to the highest grain yield per plant (95.87 g) and significantly higher harvest index of this treatment. However, the variety Gray White (V6) grown at row distance of 70 cm may not perform in other areas of the hill districts. So, the trial needs to be repeated in other areas of the hill districts.

2026-06-01T00:00:00Z Biswas, Parimal Kanti http://archive.saulibrary.edu.bd/handle/123456789/5626 2026-09-29T03:08:26Z 2026-07-01T00:00:00Z

EFFECT OF N-DOSE AND SEED RATE ON GROWTH, YIELD AND QUALITY OF LEAFY QUINOA (Chenopodium quinoa Willd.) Biswas, Parimal Kanti Executive Summary The project was carried out by setting an experiment at the research field of Sher-e-Bangla Agricultural University, Dhaka during the period from November 2022 to June, 2023 to find out the optimum nitrogen dose and seed rate of quinoa as vegetables and seed. The trial comprised of four nitrogen doses in the main plot viz. (i) 0 kg N ha 18 -1 -N 1 ; (ii) 50 kg N ha ; (iii) 100 kg N ha -1 –N 3 and (iv) 150 kg N ha -1 –N along with four seed rates in the sub-plot viz. (i) 5 kg ha -1 -S 1 ; (ii) 10 kg ha -1 –S 2 4 ; (iii) 15 kg ha -1 –S 3 and (iv) 20 kg ha . The experiment was laid out in split-plot design with three replications assigning nitrogen doses in the main plot and seed rates in the sub-plot. Experimental results revealed that variation of nitrogen doses significantly influence on plant height at 75 daya after sowing (DAS), leaves pl ant - 1 at 34 DAS, leaf breadth at 27 DAS, shoot dry weight at 20 DAS, fresh shoot weight at 27 DAS, root weight at 20 DAS, SPAD value at 35 and 45 DAS, fresh leafy vegetable yield, seed yield and harvest index. The highest fresh veget abl e yiel d (6.58 t ha ) and seed yi eld (1. 02 t ha - 1 ) was recorded in N 4 (150 kg N ha -1 ). On t he other hand, the parameters l i ke pl ant height, fresh vegetabl e yi eld and popul ati on densi t y showed t heir hi ghest perfor mance i n hi gher seed rat e (15-20 kg ha - 1 ) but hi gher number of l eaves pl ant - 1 , s hoot dr y wei ght, branches pl ant - 1 i n lower seed rate. The i nteract ion effect of t wo factors showed si gni ficant vari at i ons for all t he st udied paramet ers and t he hi ghest fresh vegetable yiel d (8. 49 t ha - 1 ) gi ven by N 4 S combi nat ion (150 kg N ha -1 with 20 kg seeds ha - 1 ) and seed yiel d (1.16 t ha - 1 4 ) gi ven by N combinati on (150 kg N ha -1 with 10 kg seeds ha - 1 ). Thus it can be concluded that quinoa shoul d be cul ti vat ed using 150 kg N wi th 20 kg seeds ha - 1 f or leafy vegetable purpose and 150 kg N wit h 10-15 kg seeds ha - 1 for seed pr oducti on.

2026-07-01T00:00:00Z