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Fertilizer Management for Rice in Ganges Tidal Coastal Zone
The document discusses the fertilizer management for rice cultivation in Bangladesh's coastal zones, highlighting the need for sustainable practices to boost crop yield, especially for saline-tolerant rice varieties. It presents experimental results showing that using rice straw and cow dung alongside integrated nutrient management increases grain and straw yields compared to traditional practices. The conclusion emphasizes that these methods not only enhance productivity but also promote savings in chemical fertilizer usage.
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Fertilizer Management for Rice in Ganges Tidal Coastal Zone
- 1. Welcome to Presentation Bangladesh RiceResearch Institute
- 2. Bangladesh Rice ResearchInstitute Fertilizer Management for Rice in Ganges Tidal Coastal Zone Dr. Pranesh Kumar Saha, Chief Scientific Officer, Soil Science Division, BRRI Md. Nazrul Islam Scientific Officer, Soil Science Division, BRRI Md. Imran Ullah Sarkar Scientific Officer, Soil Science Division, BRRI
- 3. Introduction Bangladesh Rice ResearchInstitute The coastal area covers about 20% of Bangladesh and over thirty percent of the net cultivable area. It extends inside up to 150 km from the coast. Out of 2.85 million hectares of the coastal and offshore areas about 0.83 million hectares are arable lands, which cover over 30% of the total cultivable lands of Bangladesh.
- 4. Cont’d Bangladesh Rice ResearchInstitute The dominant rice crop in the coastal area is the local T. Aman rice. Rice is the predominant crop in Bangladesh but saline tolerant modern rice cultivars are few in number. The people of that area have been cultivating saline tolerant local rice varieties for more than 100 years only in T. Aman season.
- 5. Cont’d. Bangladesh Rice ResearchInstitute The yield potential of those traditional varieties are low (2.0-2.5 t/ha/year). The need of the hour is to achieve substantially higher crop yield than the present yield levels from our limited land resources on a sustainable basis.
- 6. Contd. Bangladesh Rice ResearchInstitute A crop production system with high yield targets cannot be sustainable unless nutrient inputs to soil are at least balanced against nutrient removal by crops. Proper soil fertility management, therefore, is one of the prime importance in an endeavor to increase crop productivity.
- 7. Objectives: Bangladesh Rice ResearchInstitute To increase the productivity of MV rice through integrated fertilizer management To increase the awareness about BRRI soil management technologies among farmers
- 8. Methodology: Bangladesh Rice ResearchInstitute The following treatments were Included in this study. The experiments were set up with non replicated. The unit plot size is 8m x 6m. 2012-13 2013-14 T1: BRRI recommended dose T2: IPNS + Rice Straw (4.5 t/ha, Sun dry basis) T3: Farmers' Practice T1: BRRI recommended dose T2: IPNS + Cow dung (3 t/ha, Oven dry basis) T3: Farmers' Practice
- 9. Location: Bangladesh Rice ResearchInstitute Village Upozila District Lakhmipasha and Dudhalmou Bakergonj BarisalShibpasha Barisal sadar Mothershi, South Morakathi Ujirpur Chouddoburia Nalchity Jhalkathi Agoilpasha, Khadoikhira and Rupsia Jhalkathi sadar Naldoani, Kartikpasha, South Pangashia and North Pangashia Dumki Patuakhali West Sarikkhali Patuakhali sadar Ghatkhali Amtoli Barguna
- 10. Initial soil characteristicsof experimental plot Bangladesh Rice Research Institute Characteristics Ujirpur Amtoli Jhalkathi sadar Nalchiti pH 6.0-7.2 6.3-7.5 5.5-6.8 5.4-7.0 OM (%) 1.23-2.10 1.20-2.30 1.30-1.70 1.42-2.16 Total N (%) 0.13-0.20 0.10-0.12 0.13-0.15 0.09-0.15 Available P (mg/kg) 7-16 4-14 8-14 10-18 Available K (Cmol/kg) 0.20-0.24 0.20-0.27 0.16-0.22 0.18-0.23 Available S (mg/kg) 19-28 35-44 22-36 26-37 Available Zn (mg/kg) 0.8-1.6 0.7-1.8 1.3-2.0 1.0-2.3
- 11. Bangladesh Rice ResearchInstitute Characteristics Bakergonj Dumki Barisal sadar pH 5.6-6.0 6.5-7.4 6.2-6.7 OM (%) 1.72-2.19 1.50-1.70 1.13-1.89 Total N (%) 0.09-0.11 0.09-0.12 0.10-0.19 Available P (mg/kg) 12-19 9-14 8-17 Available K (Cmol/kg) 0.21-0.26 0.23-0.25 0.17-0.23 Available S (mg/kg) 24-40 20-34 23-35 Available Zn (mg/kg) 1.8-2.2 0.8-2.4 0.6-1.5 Cont’d
- 12. Treatment details ofthe experiment, 2012-2013 Bangladesh Rice Research Institute 1T1 & T2 – N was applied from the source of urea super granule (USG) and T3- from the source of pilled urea (PU) 2IPNS was followed in all elements (P, K, S and Zn) except N due to the application of USG Treatments T. Aus N1 P K S Zn kg/ha T1: BRRI recommended dose (AEZ basis) 50 11 15 3 1 T2: Rice Straw (4.5 t/ha, sun dry basis)+ IPNS basis chemical fertilizer2 50 7 0 0 1 T3: Farmers' Practice (FP) 37 15 10 0 0
- 13. Cont’d Bangladesh Rice ResearchInstitute 1T1 & T2 – N was applied from the source of urea super granule (USG) and T3- from the source of pilled urea (PU) 2IPNS was followed in all elements (P, K, S and Zn) except N due to the application of USG Treatments T. Aman N1 P K S Zn kg/ha T1: BRRI recommended dose (AEZ basis) 50 15 17 4 2 T2: Rice Straw (4.5 t/ha, sun dry basis)+ IPNS basis chemical fertilizer2 50 11 0 0 1.8 T3: Farmers' Practice (FP) 42 25 0 0 0
- 14. Bangladesh Rice ResearchInstitute Contd. 1T1 & T2 – N was applied from the source of urea super granule (USG) and T3- from the source of pilled urea (PU) 2IPNS was followed in all elements (P, K, S and Zn) except N due to the application of USG Treatments Boro N1 P K S Zn kg/ha T1: BRRI recommended dose (AEZ basis) 75 30 30 6 3 T2: Rice Straw (4.5 t/ha, sun dry basis)+ IPNS basis chemical fertilizer2 75 25 0 1.5 2.5 T3: Farmers' Practice (FP) 114 25 41 7 6
- 15. Treatment details ofthe experiment, 2013-2014 Bangladesh Rice Research Institute 1T1 & T2 – N was applied from the source of urea super granule (USG) and T3- from the source of pilled urea (PU) 2IPNS was followed in all elements (P, K, S and Zn) except N due to the application of USG Treatments T. Aus N1 P K S Zn kg/ha T1: BRRI recommended dose (AEZ basis) 50 11 15 3 1 T2: Cowdung (3 t/ha, oven dry basis)+ IPNS basis chemical fertilizer2 50 0 0 0 0.7 T3: Farmers' Practice (FP) 37 15 10 0 0
- 16. Cont’d Bangladesh Rice ResearchInstitute 1T1 & T2 – N was applied from the source of urea super granule (USG) and T3- from the source of pilled urea (PU) 2IPNS was followed in all elements (P, K, S and Zn) except N due to the application of USG Treatments T. Aman N1 P K S Zn kg/ha T1: BRRI recommended dose (AEZ basis) 50 15 17 4 2 T2: Cowdung (3 t/ha, oven dry basis)+ IPNS basis chemical fertilizer2 50 0 0 0 1.7 T3: Farmers' Practice (FP) 42 25 0 0 0
- 17. Contd. Bangladesh Rice ResearchInstitute 1T1 & T2 – N was applied from the source of urea super granule (USG) and T3- from the source of pilled urea (PU) 2IPNS was followed in all elements (P, K, S and Zn) except N due to the application of USG Treatments Boro N1 P K S Zn kg/ha T1: BRRI recommended dose (AEZ basis) 75 30 30 6 3 T2: Cowdung (3 t/ha, oven dry basis)+ IPNS basis chemical fertilizer2 75 6 0 0 2.7 T3: Farmers' Practice (FP) 114 25 41 7 6
- 18. Chemical composition ofrice straw and cowdung Bangladesh Rice Research Institute Organic matter N (%) P (%) K (%) S (%) Zn (%) Rice straw 0.5 0.08 1.6 0.09 0.01 Cowdung 1.2 0.8 1.3 0.13 0.01 Source: Saha et al. (2004)
- 19. Bangladesh Rice ResearchInstitute Results and Discussions
- 20. Grain and strawyield (t/ha) of T. Aus Rice (BRRI dhan27), T. Aman (BRRI dhan49) and Boro (BRRI dhan29 & BRRI dhan47), 2012-13 Bangladesh Rice Research Institute Parameters Treatment T. Aus, 2012 (n=6) T. Aman, 2012 (n=9) Boro, 2012-13 (n=4) Mean ± SD Mean ± SD Mean ± SD Grain yield (t/ha) T1 (BRRI dose) 3.99 ± 0.45 3.66 ± 0.75 6.90 ± 0.96 T2 (Rice straw + IPNS) 4.38 ± 0.68 4.01 ± 0.72 7.52 ± 0.57 T3 (Farmer’s practice) 3.46 ± 0.47 3.37 ± 0.66 6.28 ± 0.74 Straw yield (t/ha) T1 (BRRI dose) 3.84 ± 0.25 3.32 ± 0.49 5.62 ± 1.04 T2 (Rice straw + IPNS) 4.41 ± 0.44 4.05 ± 0.90 5.58 ± 1.28 T3 (Farmer’s practice) 3.32 ± 0.51 3.09 ± 0.40 4.78 ± 0.79
- 21. Grain and strawyield (t/ha) of T. Aus Rice (BRRI dhan27), T. Aman (BRRI dhan54) and Boro (BRRI dhan47), 2013-14 Bangladesh Rice Research Institute Parameters Treatment T. Aus, 2013 (n=6) T. Aman, 2013 (n=7) Boro, 2013-14 (n=5) Mean ± SD Mean ± SD Mean ± SD Grain yield (t/ha) T1 (BRRI dose) 3.87±0.34 3.86±0.23 6.70±0.56 T2 (Cowdung + IPNS) 4.04±0.46 3.99±0.45 6.91±0.60 T3 (Farmers’ practice) 3.49±0.42 3.62±0.29 6.23±0.54 Straw yield (t/ha) T1 (BRRI dose) 7.21±0.77 4.50±0.96 7.21±0.32 T2 (Cowdung + IPNS) 7.43±1.21 4.32±0.62 7.50±0.23 T3 (Farmers’ practice) 5.83±0.95 4.02±0.82 6.66±0.22
- 22. Conclusion Bangladesh Rice ResearchInstitute Rice straw/cowdung with IPNS basis chemical fertilizer performed best to get a maximum yield. Rice straw applied with IPNS based chemical fertilizer gave 20-27% higher yield over FP and it saved full dose of K and S and partially P fertilizer in all season. Cowdung gave 10-16% higher yield over FP and it saved full dose of P, K and S fertilizer in T. Aus and T. Aman season but in Boro season an additional little dose of P fertilizer was needed. On the other hand, BRRI recommended dose (only chemical fertilizer) gave 6-15% higher yield over FP. Organic manure can save foreign currency, spend to import chemical fertilizer.
- 23. Thank You Bangladesh RiceResearch Institute