Triple rice in a year: Is it feasible for low salinity areas of the coastal zone of Bangladesh?
-
Upload
international-water-management-institute-iwmi-cgiar-water-land-and-ecosystems-program -
Category
Government & Nonprofit
-
view
196 -
download
0
description
Transcript of Triple rice in a year: Is it feasible for low salinity areas of the coastal zone of Bangladesh?
![Page 1: Triple rice in a year: Is it feasible for low salinity areas of the coastal zone of Bangladesh?](https://reader033.fdocuments.in/reader033/viewer/2022060121/559362fe1a28ab9e478b46ee/html5/thumbnails/1.jpg)
Welcome
![Page 2: Triple rice in a year: Is it feasible for low salinity areas of the coastal zone of Bangladesh?](https://reader033.fdocuments.in/reader033/viewer/2022060121/559362fe1a28ab9e478b46ee/html5/thumbnails/2.jpg)
Triple rice in a year: Is it feasible for low salinity areas of the
coastal zone of Bangladesh?
N. K. Saha, M. K. Mondal, E. Humphreys, M. H. Rashid, P. C. Paul, S. P. Ritu
![Page 3: Triple rice in a year: Is it feasible for low salinity areas of the coastal zone of Bangladesh?](https://reader033.fdocuments.in/reader033/viewer/2022060121/559362fe1a28ab9e478b46ee/html5/thumbnails/3.jpg)
Rationale
● Fresh water all the year round in much of Barisal● Current cropping patterns:
○ Fallow/Aus-T.Aman-Fallow/Keshari ○ 0-3 2-3.5 0-1 t/ha
● Possible technology to fit 3 rice crops in a year ● 50% cultivable land medium high (SRDI 2010)
● HYV rice ● River water for Boro, river water & rainfall for Aus
drainage to Aman crop.
![Page 4: Triple rice in a year: Is it feasible for low salinity areas of the coastal zone of Bangladesh?](https://reader033.fdocuments.in/reader033/viewer/2022060121/559362fe1a28ab9e478b46ee/html5/thumbnails/4.jpg)
Hypotheses of the study
● 3 high yielding rice crops per year IS possible in coastal zone where ○ fresh water available throughout the year○ ability to drain excess water
M J J A S O N D J F M A M
Boro (140-145 d) T. Aman (130-140 d)
Aus (100-105 d)
![Page 5: Triple rice in a year: Is it feasible for low salinity areas of the coastal zone of Bangladesh?](https://reader033.fdocuments.in/reader033/viewer/2022060121/559362fe1a28ab9e478b46ee/html5/thumbnails/5.jpg)
Objectives
To evaluate combination of planting dates and aman varieties for triple rice system● Feasibility● System yield● Irrigation water requirement for boro
![Page 6: Triple rice in a year: Is it feasible for low salinity areas of the coastal zone of Bangladesh?](https://reader033.fdocuments.in/reader033/viewer/2022060121/559362fe1a28ab9e478b46ee/html5/thumbnails/6.jpg)
Basic site information
● PSTU farm, Patuakhali● Clay loam● Lowland
Drain & Water source ~100 m
![Page 7: Triple rice in a year: Is it feasible for low salinity areas of the coastal zone of Bangladesh?](https://reader033.fdocuments.in/reader033/viewer/2022060121/559362fe1a28ab9e478b46ee/html5/thumbnails/7.jpg)
Treatments: ➢ E1-3: aus sowing dates/establishment method➢ V1-4: aman varieties➢ D1-5:boro sowing dates
Experimental design
![Page 8: Triple rice in a year: Is it feasible for low salinity areas of the coastal zone of Bangladesh?](https://reader033.fdocuments.in/reader033/viewer/2022060121/559362fe1a28ab9e478b46ee/html5/thumbnails/8.jpg)
● E1= Sown 10 April, transplanted 1 May● E2= Sown on 25 April, transplanted 15 May● E3= Sown Direct (wet) seeded 1 May
Variety: OM1490 (100 days)
Aus establishment treatments (E)
![Page 9: Triple rice in a year: Is it feasible for low salinity areas of the coastal zone of Bangladesh?](https://reader033.fdocuments.in/reader033/viewer/2022060121/559362fe1a28ab9e478b46ee/html5/thumbnails/9.jpg)
RULE: Transplanting date 10 d after harvest of each aus treatment
E1 and E2: ● V1 BRRI dhan49 (duration 135 d)● V2 BRRI dhan52 (duration 145 d, submergent tolerant)E3:● V3 BRRI dhan33 (duration 118 d)● V4 BRRI dhan53 (duration 125 d)
Aman variety treatments (V)
![Page 10: Triple rice in a year: Is it feasible for low salinity areas of the coastal zone of Bangladesh?](https://reader033.fdocuments.in/reader033/viewer/2022060121/559362fe1a28ab9e478b46ee/html5/thumbnails/10.jpg)
RULES: ● First transplanting date NOT less than 10 d after aman
harvest, & NOT before 15 November● Second transplanting date 15 d after first
● D1= 15 November ● D2= 20 November ● D3= 30 November ● D4= 05 December ● D5= 15 December
Boro sowing date treatments (D)
![Page 11: Triple rice in a year: Is it feasible for low salinity areas of the coastal zone of Bangladesh?](https://reader033.fdocuments.in/reader033/viewer/2022060121/559362fe1a28ab9e478b46ee/html5/thumbnails/11.jpg)
Treatment CombinationsAus Aman Boro CSE1 =1 May V1= BRRI dhan49 D1= 15 November 1
D2 = 30 November 2V2 =BRRI dhan52 D1= 15 November 3
D2 = 30 November 4E2=15 May V1 =BRRI dhan49 D1= 30 November 5
D2= 15 December 6V2 =BRRI dhan52 D1=30 November 7
D2=15 December 8E3=1 May V1 =BRRI dhan33 D1= 20 November 9
D2= 05 December 10V2= BRRI dhan53 D1=20 November 11
D2= o5 December 12
![Page 12: Triple rice in a year: Is it feasible for low salinity areas of the coastal zone of Bangladesh?](https://reader033.fdocuments.in/reader033/viewer/2022060121/559362fe1a28ab9e478b46ee/html5/thumbnails/12.jpg)
Crop management information
● Crop establishment: Transplanting (all crops): 21 day-old seedlings
20 cm x 20 cm Direct seeded aus (Dsaus): 20 cm row spacing
![Page 13: Triple rice in a year: Is it feasible for low salinity areas of the coastal zone of Bangladesh?](https://reader033.fdocuments.in/reader033/viewer/2022060121/559362fe1a28ab9e478b46ee/html5/thumbnails/13.jpg)
● Fertilizers:
Season N (kg/ha)
P2O5(kg/ha)
K2O(kg/ha)
CaSO4(kg/ha)
ZnSO4(kg/ha)
Aus 100 60 40 60 10
Aman 100 60 40 60 10
Boro 120 60 40 60 10
DS.aus 10-15 DAE, 30-35 DAE, 45-50 DAE(5-7DBPI) and 60-65 DAET.Aus
Final land preparation, 25 DAT, 5-7 DBPI and at headingT.Aman
Boro
BRRI, 2012
![Page 14: Triple rice in a year: Is it feasible for low salinity areas of the coastal zone of Bangladesh?](https://reader033.fdocuments.in/reader033/viewer/2022060121/559362fe1a28ab9e478b46ee/html5/thumbnails/14.jpg)
Irrigation: ● T.Aus and DSaus – irrigated as needed from canal● Boro– Fully irrigated from canal (pumping)
Drainage:Excess water during aus & aman– at low tide
![Page 15: Triple rice in a year: Is it feasible for low salinity areas of the coastal zone of Bangladesh?](https://reader033.fdocuments.in/reader033/viewer/2022060121/559362fe1a28ab9e478b46ee/html5/thumbnails/15.jpg)
Weed, pest and disease management • Good control of pests and diseases (BRRI, 2012 recs)(except brown spot in aman 2013 and boro 2012-13 first 2 sowings)• plastic barrier to keep rats out• netting to keep birds out
Bird nets
Plastic barrier
![Page 16: Triple rice in a year: Is it feasible for low salinity areas of the coastal zone of Bangladesh?](https://reader033.fdocuments.in/reader033/viewer/2022060121/559362fe1a28ab9e478b46ee/html5/thumbnails/16.jpg)
Crop Monitoring
● Phenology dates:● PI, FL, PM
● Biomass: fortnightly● Yield and yield components:
● Panicles/m2 ● Florets/panicle● Floret fertility● 1000 grain wt. ● Grain & straw yield
![Page 17: Triple rice in a year: Is it feasible for low salinity areas of the coastal zone of Bangladesh?](https://reader033.fdocuments.in/reader033/viewer/2022060121/559362fe1a28ab9e478b46ee/html5/thumbnails/17.jpg)
● The amount of water/plot: ○ pump discharge rate (R), duration of irrigation (T), and plot
area (A). ○ Formula: (R X T)/A
Irrigation monitoring
![Page 18: Triple rice in a year: Is it feasible for low salinity areas of the coastal zone of Bangladesh?](https://reader033.fdocuments.in/reader033/viewer/2022060121/559362fe1a28ab9e478b46ee/html5/thumbnails/18.jpg)
T. Aman 2012
![Page 19: Triple rice in a year: Is it feasible for low salinity areas of the coastal zone of Bangladesh?](https://reader033.fdocuments.in/reader033/viewer/2022060121/559362fe1a28ab9e478b46ee/html5/thumbnails/19.jpg)
Field duration of aman crop
![Page 20: Triple rice in a year: Is it feasible for low salinity areas of the coastal zone of Bangladesh?](https://reader033.fdocuments.in/reader033/viewer/2022060121/559362fe1a28ab9e478b46ee/html5/thumbnails/20.jpg)
Field water depth during aman 2012
![Page 21: Triple rice in a year: Is it feasible for low salinity areas of the coastal zone of Bangladesh?](https://reader033.fdocuments.in/reader033/viewer/2022060121/559362fe1a28ab9e478b46ee/html5/thumbnails/21.jpg)
Effect of sowing date and variety on grain yield of aman
![Page 22: Triple rice in a year: Is it feasible for low salinity areas of the coastal zone of Bangladesh?](https://reader033.fdocuments.in/reader033/viewer/2022060121/559362fe1a28ab9e478b46ee/html5/thumbnails/22.jpg)
Field duration of aus crop
![Page 23: Triple rice in a year: Is it feasible for low salinity areas of the coastal zone of Bangladesh?](https://reader033.fdocuments.in/reader033/viewer/2022060121/559362fe1a28ab9e478b46ee/html5/thumbnails/23.jpg)
Effect of sowing date on aus yield
![Page 24: Triple rice in a year: Is it feasible for low salinity areas of the coastal zone of Bangladesh?](https://reader033.fdocuments.in/reader033/viewer/2022060121/559362fe1a28ab9e478b46ee/html5/thumbnails/24.jpg)
Aus crop
![Page 25: Triple rice in a year: Is it feasible for low salinity areas of the coastal zone of Bangladesh?](https://reader033.fdocuments.in/reader033/viewer/2022060121/559362fe1a28ab9e478b46ee/html5/thumbnails/25.jpg)
Effect of sowing date on boro duration
![Page 26: Triple rice in a year: Is it feasible for low salinity areas of the coastal zone of Bangladesh?](https://reader033.fdocuments.in/reader033/viewer/2022060121/559362fe1a28ab9e478b46ee/html5/thumbnails/26.jpg)
Daily mean temperature during boro 2012-13 and 2013-14
![Page 27: Triple rice in a year: Is it feasible for low salinity areas of the coastal zone of Bangladesh?](https://reader033.fdocuments.in/reader033/viewer/2022060121/559362fe1a28ab9e478b46ee/html5/thumbnails/27.jpg)
Effect of sowing date on yield of boro
![Page 28: Triple rice in a year: Is it feasible for low salinity areas of the coastal zone of Bangladesh?](https://reader033.fdocuments.in/reader033/viewer/2022060121/559362fe1a28ab9e478b46ee/html5/thumbnails/28.jpg)
Boro crop
![Page 29: Triple rice in a year: Is it feasible for low salinity areas of the coastal zone of Bangladesh?](https://reader033.fdocuments.in/reader033/viewer/2022060121/559362fe1a28ab9e478b46ee/html5/thumbnails/29.jpg)
Total system grain yield
![Page 30: Triple rice in a year: Is it feasible for low salinity areas of the coastal zone of Bangladesh?](https://reader033.fdocuments.in/reader033/viewer/2022060121/559362fe1a28ab9e478b46ee/html5/thumbnails/30.jpg)
Duration of the cropping pattern in the field during 2012-13 and 2013-14
![Page 31: Triple rice in a year: Is it feasible for low salinity areas of the coastal zone of Bangladesh?](https://reader033.fdocuments.in/reader033/viewer/2022060121/559362fe1a28ab9e478b46ee/html5/thumbnails/31.jpg)
Conclusion & Recommendation
● It is feasible to fit 3 rice crop in a year● 13.4 to 17.2 t/ha/yr about 3 x farmers’ harvest● Average 10-12 day turn around period● Need for model simulation to evaluate performance
over range of weather conditions● Will pests & diseases become a problem in triple rice
systems – need for ecologically friendly management systems
![Page 32: Triple rice in a year: Is it feasible for low salinity areas of the coastal zone of Bangladesh?](https://reader033.fdocuments.in/reader033/viewer/2022060121/559362fe1a28ab9e478b46ee/html5/thumbnails/32.jpg)
Thank you
![Page 33: Triple rice in a year: Is it feasible for low salinity areas of the coastal zone of Bangladesh?](https://reader033.fdocuments.in/reader033/viewer/2022060121/559362fe1a28ab9e478b46ee/html5/thumbnails/33.jpg)
Irrigation water requirement during boro 2012-13 to 2013-14
![Page 34: Triple rice in a year: Is it feasible for low salinity areas of the coastal zone of Bangladesh?](https://reader033.fdocuments.in/reader033/viewer/2022060121/559362fe1a28ab9e478b46ee/html5/thumbnails/34.jpg)
Irrigation water productivity(kg/ha-mm) of BRRI dhan28 during boro 2012-13 to 2013-14