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Research Detail

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S S A Kamar
Farm Machinery & Postharvest Process Engineering Division, BARI, Joydebpur, Gazipur, Bangladesh

M A Wohab
Farm Machinery & Postharvest Process Engineering Division, BARI, Joydebpur, Gazipur, Bangladesh

Fertilizer deep placement (FDP) is a proven technology for growing different crops all over the world. FDP is more effective than the traditional method (surface broadcasting) of applying fertilizer across a field. An experiment was executed at the research field of Regional Agricultural Research Station, Bangladesh Agricultural Research Institute, Rahmatpur, Barishal during Rabi season (2018-19) to develop prilled urea applicator for increasing fertilizer use efficiency and to increase crop production with saving of fertilizer and environment pollution with three treatments (T1: Prilled urea broadcasting (Farmers’ Practice), T2: Prilled urea deep placement by applicator and T3: N, P, K deep placement by applicator). The design of the experiment was randomize complete block (RCBD) with three replications. The variety of potato was BARI Alu-41. The fertilizer use efficiency of urea was more in deep placement treatments than broadcasting. The highest yield was found (34.40 t/ha) at T3 treatment followed by T2 (32.75 t/ha) and T1 (27.43 t/ha). The yield increase percentage was higher in deep placement treatments (T3: 25.4% and T2: 19.4%) than broadcasting of urea. The benefit cost ratio (BCR) was greater in T3 (1.15) and T2 (1.04) than T1 (0.77).

  Urea applicator, Fertilizer use efficiency, Sex pheromone
  RARS, BARI, Rahmatpur, Barishal
  01-07-2018
  30-06-2019
  Farm Mechanization
  
  1. To develop prill urea applicator for increasing fertilizer use efficiency.
  2. To increase crop production with saving of fertilizer and environment pollution.

The experiment was conducted at the research field of RARS, BARI, Rahmatpur, Barishal during the Rabi season 2018-19. The site is under the Ganges tidal flood plain and at 22.42?N latitude and 90.23?E longitude. The soil of the experimental plot was silt loam with pH varying from 6.25 to 6.8. The test crops were potato, brinjal and chili. Experimental Design: The design of the experiment was RCB and the treatments were:T1= Prilled urea broadcasting (Farmers’ Practice), T2 = Prilled urea deep placement by applicator, and  T3 = N, P, K deep placement by applicator. There were three replications. Total experimental land size was 238 m2 containing unit plot size 20 m2. The fertilizer doses were were determined and applied during land preparation and top dressing two times. The first weeding was done manually at 15 days after planting and next weeding was done when it was necessary to keep the field free from weeds. Sex pheromone trap was used there for controlling the insect infestation. The experimental plots were surrounded by nets for protecting the plants from birds. Five plants from each plot were selected randomly for collecting data. Yield data was collected from whole of the plot. The collected data were analyzed using R software. The deep placement was done by an applicator designed at RARS, Rahmatpur workshop.

  Annual Research Report 2018-2019, BARI, Gazipur, Bangladesh
  
Funding Source:
  

The highest yield was found (34.40 t/ha) at T3 treatment followed by T2 (32.75 t/ha) and T1 (27.43 t/ha). The yield increase percentage was higher in deep placement treatments (T3: 25.4% and T2: 19.4%) than broadcasting of urea. The benefit cost ratio (BCR) was greater in T3 (1.15) and T2 (1.04) than T1 (0.77). It is needed to be continued in the next year for confirmation of results. 

  Report/Proceedings
  

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