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Soil Science Research Section

Soil science research section was conducting to develop technology package that will enhance soil fertility maintenance in crop production, improve nutrient use efficiency of fertilizer for the agricultural crops, develop adaptive research for the climate change through the screening of low fertility tolerant crop varieties, formulate effective and low-cost fertilizer for the farmers and develop national soil and plant laboratory.

Research Achievement

  • Efficient utilization of urea fertilizer blended with same volume of FYM powder increases 15-20% rice grain yield and save up to 30% of urea used.
  • As much as 4% rice grain yield increased through the equal split application of potash fertilizer at basal and maximum tillering stage was realized.
  • Farmers adopted the application of Gypsum as a source of sulfur because they realized that as much as 18% of rice yield could be increased through the basal dressing of 8 kg S ha-1.
  • Up to 10% rice yielding could be achieved through the basal application of zinc sulfate at the rate of 1 kg Zn ha-1.
  • Late fertilization of N and B on rice and food legume would be suggested as low cost technology due to the salient research findings that explained 30% rice grain yield and 34% legume yield could be increased through late foliar application of N and B.
  • Seed dressing of Mo to the legumes could enhance legume yield up to 30% to 40%.
  • Research oriented Bio-Super Foliar Fertilizer production was introduced to the farmers and it could increase rice yield up to 21% as well as legume yield up to 35%.
  • Seed dressing of Mo to the legumes could enhance legume yield up to 30% to 40%.
  • Nitrogen responsive curve for different high yielding rice varieties under specific location has been developed and the amount of N to be applied to get maximum profitable yield ranges from 57 kg N ha-1 to 81 kg N ha-1.
  • As an average nitrogen uptake of the hybrid rice varieties can be varied from 105 kg N ha-1season-1 to 161 kg N ha-1season-1, the amount of urea at the rate of 228 kg urea ha-1 to 350 kg urea ha-1 could be advisable as a blanket recommendation.
  • Among 106 rice lines tested, Yeahnelo-1 (Yezinyar-9), IRAT-191, Inmayebaw, Shwemanaw (Tamilnadu), Malaytun (MR-230), and MR-9 could be identified as low-N tolerance rated by GYEI with index>1, and responsive-efficient (R-E) by both mean grain yield and Internal Efficiency Index of N.
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