Flax (Linum usitatissimum L.), grown throughout the world for millennia. It is a multipurpose agricultural crop that can provide food, fuel and fibre. An agro-morphological characterization based on 13 traits of 26 flax accessions was carried out during the Rabi season 2017-2018 at the Agricultural Research Station, Bangladesh Agricultural Research Institute, Rangpur. The field experiment was laid out in a randomized completed block design having four replications. Flax seeds were sown in 3.0 m × 0.6 m plot with continuous line sowing (two lines). The seed germination (%) and vigour indices of all flax accessions varied from 44.1 – 77.7 and 44.1 – 119.4, respectively. A significant variation in all growth and yield attributing descriptors was observed except 1000-seed weight of flax. Among the accessions, BD-10708 possessed the highest seed yield (182.9 g plant–1) and yield attributing descriptors viz., number of capsules plant–1 (142) and seeds plant–1 (513) of flax. The performance of the local accesson Ulipur was observed poor compared to some of the test accessions of flax. Some of these flax accessions could be used as breeding materials in varietal developmental and improvement programmes with higher yield potentials of flax in Bangladesh.
The experiment was conducted to find out the effect of different sources of nutrient and hormones on the growth and yield of tomato. The study consisted of Factor A: different nutrient sources viz. N0: Control; N1: Cowdung (60 tha-1); N2: Vermicompost (7 tha-1) and N3: Recommended dose (10 ton Cowdung + 550 kg Urea + 450 kg TSP + 250 kg MPha-1) and Factor B: different hormones viz. H0: Control; H1: NAA (30 ppm) and H2: GA3 (30 ppm). The minimum days (32d) required from transplanting to 1 st flowering from N3H2 and the maximum (39d) was needed from N0H0. The treatment N3H2 performed better than other treatments and produced maximum (59.11) number of fruits per plant, maximum (95.82 g) weight of individual fruit and maximum (83.87 ton) yield per hectare. Treatment combination, N3H2, enhanced fruit production by about three times over control (20 fruits plant-1) and individual fruit weight by 1.6 times compared to control (59 g plant-1) resulting maximum fruit yield (83.87t ha-1) which is 2.4 times higher than that of control, N0H0. It appears that the recommended fertilizer dose along with GA3 application may be recommended for tomato production.
Linseed, one of the oldest, conventional and underutilised multipurpose crops in Bangladesh, can provide food, feed, fuel, and fibre. Environmental conditions especially temperature influence crop growth and development, which is the most vital factor in enhancing or reducing crop productivity. Experiments were, therefore, conducted at Farmer's field during two consecutive cropping seasons of 2018-2019 and 2019-2020 to study the effect of diurnal temperature variation on the growth and phenology of linseed cultivars. The field experiment was laid out in a randomized completed block design having four replications. Linseed seeds were sown in 3.0 m × 0.6 m plots with continuous line sowing (two lines). The difference between the temperature extremes (weekly average) was observed 14.57 ⁰C in 1st week of January 2019 and 15.29 °C in 2nd week of February 2020. The temperature gradient influenced the growth, phenology and seed yield of linseed cultivars. The sowing of linseed should be completed within the second fortnight of November for better crop growth and seed yield in the north-western part of Bangladesh. The knowledge of the impact of extreme temperature on yield/yield components could contribute to the improvement of crop models or ideotype development.
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