Abstract
A field experiment was conducted to explore how rice (BINA Dhan 11 and BRRI Dhan 34) responds in modified soil and climatic conditions. They were planted on artificially prepared soil beds by mixing calcareous and acid soils in 1:1 and 1:3 ratios. Soil temperature (St) was elevated up to 20C over the diurnal ones. Moisture (M) was maintained at 50%, 70%, and saturated (100%) soil conditions. Vermicompost (V) was applied at the rates of 0, 10, and 15 tha-1. The number of tillers and plant height were recorded at 25 days intervals. The maximum number of 26 and 27 tillers for BINA Dhan 11 and BRRI Dhan 34 were recorded. The longest plant height was observed with the T10 (V15M100) treatment. The treatment T3 (V15M100) resulted in maximum fresh weight of shoot and shoot dry matter production for both rice varieties in 1:3 mixed soil. Both varieties performed well in 1:3 mixed soils and elevated temperature conditions, as observed for normal soils. This evidence concluded that the improvement of calcareous and acid soils through their mixing is a successful approach and confirmed by the treatments' usual responses on different rice growth parameters under these mixed soils.
Highlights
Bangladesh, an agriculture-based country, has always been considered as one of the fertile lands that support almost all types of crops throughout the year
A field experiment was conducted during Aman season at the premises of the Department of Soil, Water and Environment, University of Dhaka, Dhaka-1000 to evaluate the combined effect of temperature, moisture, and vermicompost on the growth performances of rice grown on different mixing ratios of acid and calcareous soils
Experiments were conducted under field conditions maintaining soil moisture at 50%, 75% and saturated (100%) soil conditions along with a temperature rise of 10C and 20C than those of the diurnal soil temperatures (26-280C)
Summary
Bangladesh, an agriculture-based country, has always been considered as one of the fertile lands that support almost all types of crops throughout the year. Rice, being the staple food for the people of Bangladesh, stands top in case of production among the food crops covering about 75% of agricultural lands used for crop production. Global food production and climate change are major concerns. Climate change is the change in weather patterns that extends for a large period and can be attributed primarily to human activities. Climate change will significantly affect agriculture by increasing water demand, limiting crop productivity, and reducing water availability in areas where crop production is dependent solely on irrigation. Bangladesh is one of the most suffered countries of the woes brought upon by climate change. A change in seasonal pattern has already been experienced which is a matter of great worry for the
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