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Articles by M.M.A.A. Chowdhury
Total Records ( 2 ) for M.M.A.A. Chowdhury
  M.F. Hossain , M.S. Akter , U.K. Majumder , M.S.I. Sikder and M.M.A.A. Chowdhury
  The experiment was conducted to evaluate the impact of tillage and nitrogen on soil physical properties such as bulk density, particle density, soil moisture, porosity, air filled porosity. Soil physical properties were significantly influenced by different tillage practices but in case of nitrogen treatments there were no significant variation. Bulk density was significantly increased with soil depth. The highest bulk density of 1.46 cm-3 was recorded under no tillage at 20-30 cm soil depth. Maximum particle density (2.53 g cm-3) was measured by 10 cm deep tillage (T1) at 10-20 cm soil depth. Soil porosity was statistically influenced by different tillage operations. The maximum soil porosity of 64.68% was observed by 20 cm deep tillage (T2) at 0-10 cm soil depth. The soil moisture significantly decreased with soil depth. The highest moisture content of 44.43% was recorded under deep tillage (T2) at 0-10 cm soil depth and lowest 23.53% was found by control (T0) at 20-30 cm depth. Maximum air filled porosity (15.66%) was recorded in deep tillage (T2) at 20-30 cm soil depth. High air filled porosity indicated low moisture content in soil.
  M.F. Hossain , M.A. Kabir , U.K. Majumder , M.S.I. Sikder and M.M.A.A. Chowdhury
  An experiment was conducted during the period from November 2001 to April 2002 to determine the optimum irrigation time and nitrogen level of wheat. Highest grain yield (3.71 t ha-1) was obtained with three irrigations at crown-root initiations (CRI)+maximum tillering (MT)+grain filling (GF) stages which was identical with two irrigations at crown-root initiations (CRI)+maximum tillering (MT) stages and at crown-root initiations (CRI)+grain filling stages. The highest grain yield (3.61 t ha-1) was obtained from 120 kg N ha-1 which was followed by 100 kg N ha-1 treatment and the lowest grain yield (2.81 t ha-1) was recorded under 40 kg N ha-1 treatment. No significant effect was observed on yield due to interaction of irrigation and nitrogen level. The highest grain yield (4.33 t ha-1) was found by three irrigation at crown-root initiations (CRI)+maximum tillering (MT)+grain filling (GF) with 120 kg N ha-1. However, grain yield of wheat was significantly influenced by irrigation and nitrogen level but not due to interaction of irrigation and nitrogen level.
 
 
 
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