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Research Detail

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ABMJ Isalm
Scientific Officer
Rice Farming Systems, Bangladesh Rice Research Institute, Gazipur-1701

Satyen Mondal
Senior Scientific Officer
Rice Farming Systems, Bangladesh Rice Research Institute, Gazipur-1701

Abhijit Saha
Principal Scientific Officer
Rice Farming Systems, Bangladesh Rice Research Institute, Gazipur-1701

To determine optimum fertilizer management for double transplanted rice and to increase system productivity, the experiment was conducted during Boro 2011-12 and T. Aman 2012 seasons at BRRI farm, Gazipur. In this experiment six planting methods and among these in case of double transplanting three fertilizer application methods were applied. Under late situation, double transplanting gave significantly higher grain yield than that of normal transplanting in both T Aman and Boro seasons.

  Fertilizer management, Double transplanting, T. Aman, Boro
  BRRI, Gazipur
  01-07-2011
  30-07-2012
  Farming System
  Fertilizer

to increase the yield per unit area and to increase system productivity

The experiment was conducted during Boro 2011-12 and T. Aman 2012 seasons at BRRI farm, Gazipur.  In this experiment six planting methods and among these in case of double transplanting three fertilizer application methods were applied. The design of the experiment was RCB with three replications. In T. Aman season, treatments were: Planting methods under different time of transplanting: T1= Normal transplanting with 60 DOS (TP: 25 Sep; Sowing: 25 Jul.), T2= Normal transplanting with 30 DOS (TP: 25 Sep.; Sowing: 25 Aug.),  T3= Double transplanting (No fertilizer in 1st transplanted plot; All seedling removed), T4= Double transplanting with (1st split urea in 1st transplanted plot; All seedling removed), T5= Double transplanting (Full fertilizer in 1st transplanted plot; 75% seedling removed)  and T6 = Remaining 25% seedlings in fully fertilized 1st  transplanted plot. In Boro season, T1= Normal transplanting with 80 DOS (TP: 25 Feb.; Sowing: 05 Dec.), T2= Normal transplanting with 40 DOS (TP: 25 Feb.; Sowing: 15 Jan.), T3= Double transplanting (No fertilizer in 1st transplanted plot; All seedling removed), T4= Double transplanting with (1st split urea in 1st transplanted plot; All seedling removed), T5= Double transplanting (Full fertilizer in 1st transplanted plot; 50% seedling removed) and T6 =Remaining 25% seedlings in fully fertilized 1st  transplanted plot. Nitrogen, P, K, S and Zn were applied as per recommendation. Fertilizer:N-P-K-S-Zn (kg/ha) was 92-12-41-10-2  and 168-24-73-15-3 for T. Aman and Boro rice, respectively.

  Proceedings of the BRRI Annual Internal Review, 2012-13
  
Funding Source:
1.  Government Budget:  
  

In T. Aman season, the grain yield ranged from 1.78 to 5.49 t/ha among the treatments. The treatment effect on grain yield was significant (p ≤ 0.05). The highest grain yield was obtained with the T6 treatment (5.49 t/ha.), followed by the T5, T3 and T4 treatments, and minimum under T1 (1.78 t/ha) treatments. The grain yield reduction under T2 and T1 treatments was 62 and 67%, respectively, as compared to the T6 treatment. The grain yield-producing order under different treatments was T6> T5> T3> T4> T2> T1. In Boro season, the grain yield of rice was significantly affected by different treatments. Significantly (p ≤ 0.05) highest grain yield was obtained from T6 (6.12 t/ha) treatment, followed by the T4 and T5 treatments. The lower and statistically similar grain yields were observed in T2 (4.12 t/ha), T3 (4.94 t/ha) and T1 (5.03 t/ha) treatments. The grain yield reduction under T2, T3 and T1 treatments was 33, 19 and 18%, respectively, as compared to the T6 treatment. The grain yield-producing trend under different treatments was T6> T4> T5> T1> T3> T2,.

  Report/Proceedings
  

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