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Young brahmaputra floodplain(shingair upazilla)

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This area is occupied by permeable silt loam to silty clay loam soils on the ridges and impermeable clays in the basins, neutral to slightly acid in reaction. General soil types include predominantly grey floodplain soils. Organic matter content is low in ridges and moderate in basins. Soils are deficient in N, P, and S but the status of K and Zn are reasonable.

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Young brahmaputra floodplain(shingair upazilla)

  1. 1. Soil & crop recommendation of Young Brahmaputra Floodplain 1
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  4. 4. Physiography- Young Brahmaputra Floodplain (AEZ 8)  There are 3 sub regions of this physiography  High Jamuna Floodplain;  Upper Brahmaputra Floodplain;  Upper Brahmaputra-Jamuna Floodplain. Land form - There are many chars. Mouja name - Duariya .  Area(Mouja)- 12 hectare 4
  5. 5. Soil Series- Melandoh New Bramaputra Palolvumi is medium high and medium low land with poorly drained languor penetrating soil. 5 Level Color Texture Consistency (wet) pH Draina ge Upper level Gray Loamy loose Moderately acidity & alkalinity Poorly Middle level Gray brown Loamy loose Moderately alkalinity Low level Gray Loam/ Sandy loam loose Moderately alkalinity
  6. 6. Land form of soil series & their quality soil series Land form Texture pH O.M N P Ca B (%) (%) (µ gm/gm soil) Melandoh M. High L. Loam/sand y loam 4.8-7.2 1.41 0.1 7.49 7.16 0.34 M. Low L. Loam/sand y loam 4.6-6.1 1.31 0.1 10.0 8 6.62 0.27 6
  7. 7. Potential crop formation according to the soil 7 Land form Soil series Useful crop(Without irrigation) Annual Perenni al Potential crop formation Rabi Kharif 1 Kharif 2 Medium high land Mela ndoh •Carrots,Rye, Wheat,sweet potato,onion, cowan,groun dnut,mustard, Red spinach Woven aus,Jute, Cowan, Plantation aman, Woven aus Colocasia >Rabi crops-fallow- woven aus-jute- Plantation aman (L/H), >Rabi crops-fallow- Woven aman. >Rabi crops-fallow- Plantation aman. >fallow-fallow- plantation aman.
  8. 8. Potential crop formation according to the soil 8 Land form Soil series Useful crop(With irrigation) Annu al Peren nial Potential crop formation/pattern Rabi Kharif 1 Kharif 2 Medium high land Mela ndoh Carrots,Wheat ,maize,Water melon(L), mustard(L). Plantation aus. Plantation aman. - >Wheat/mustard(L) /maize-woven aus/jute-plantation aman. >Rabi crops-fallow- Plantation aman. >fallow-Maize- Plantation aman. >Boro(L)/fallow.
  9. 9. Crops Texture Drainage Rice(paddy) + + H S L M Rice(upland) + + H S M M Rice(hungry) + + H S H M Maize + + M 60 M G Wheat + + M 60 M M Jute + + H /M 10-75 M L Ground nut + + + + L 50 M M L 9 Fine Medium Coarse Verycoarse tolerated Freeessential ordesirable Imperfectwell tolerated Poortolerated orneeded Tolerancetoshort periodsofwater logging Minimumground waterdepth(cm) Minimumrooting depth Erosionhazard Salinitytolerance Recommendation
  10. 10. Crops Moisture Reaction Nutrient needs Drought resistance HighAWC capacity LowAWC welltolerated Optimum pH RangeofpH tolerancefor satisfactory yield Generallevel of requirements Specific requirements Rice(paddy) L + 5.0-6.5 4.0-8.0 M High N Rice(upland) L 4.5-7.5 N Rice(hungry) M + 4.5-7.5 L Maize L + 5.5-7.0 5.0-8.0 H High N Wheat 6.0-7.0 H Jute 6.0 -7.0 M Ground nut M + 5.3-6.6 5.0-7.0 M 10 ‘’+’’= attribute L=low, M= medium, H= high & S= shallow
  11. 11. Requirement for selected crops Crops Total growing period(days) Optimum temperature for growth (̊c) Day length for flowering Soil requirement s Sensitivity to salinity Rice 90-150 22-30 Short day /Day neutral Heavy soils preferred for percolation losses : pH 5.5-6 Moderately sensitive Maize 100-140+ 24-30 Day neutral /Short day Well drained & aerated soils without water logging :pH 5-7 Moderately sensitive Wheat Spring:100-130 Winter:180-250 15-20 Day neutral /long day Medium texture is preferred ; relatively tolerant to high water table: pH 6-7 Moderately sensitive Potato 100-150 15-20 Long day /Day neutral Well-drained, aerated & porous soils : pH 4.5-6 Moderately sensitive 11
  12. 12. Nutrients requirement Crops N P K (kg /ha, growing period ) Rice 100-150 20-40 80-120 Maize 100-200 50-80 60-100 Wheat 100-150 35-45 25-50 Potato 80-120 50-80 125-160 12
  13. 13. References • Booker Tropical Soil Manual, ”A handbook for soil survey and agricultural land evaluation in the tropics & sub tropics” 13

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