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Articles by S.A. Ahmed
Total Records ( 2 ) for S.A. Ahmed
  Aremu, M.O. , A. Olonisakin and S.A. Ahmed
  The levels of iron (Fe), zinc (Zn), copper (Cu), manganese (Mn), lead (Pb), cadmium (Cd) and ercury (Hg) content were determined in samples of maize, (Zea mays) guinea corn (Sorghum bicolor), bambara groundnut (Vigna subterranean) and cowpea (Vigna unguiculata) obtained in six different locations along some roads within Nasarawa State, Nigeria by flame atomic absorption spectrophotometery in order to assess the effect of accumulation of the metals of interest on crops as a measure of environmental pollution. The mineral mean value for different locations ranged between: Fe (1.6-18.0, 0.75-7.0; 1.0-29.0 and 2.0-20.0), Zn (2.5-3.1; 2.0-10.2. 0 and 1. 0- 4.0), Cu (0.32-0.42; 0.6-2.0; 1.0-7.0 and 0.48-3.5), Mn (0.03-0.56; 0.31-2.0; 0.5-22 and 0.6-4.5), Pb (0.35-1.35; 1.0-2.1; 1.0-44.0 and 3.2-15.1), Cd (0.15-0.22; 0.15-0.9; 1.0-2.0 and 0.5-1.0) and Hg (not available; 0.1-0.3; 1.0-1.2 and 0.2-1.2) mg/100 g samples of maize, guinea corn, bambara groundnut and cowpea, respectively. The results showed that exhaust gas being released from the automobiles can contribute to the level of lead present in crops and the studied crops can contribute significant amount of cadmium toxicity in diet.
  M. Monjurul Alam , A.K.M. Maqsudul Alam , S. Khandker , M.N. Gani , S.A. Ahmed and Ahsanul Haque
  Responsiveness of the variety Falgooni Tossa i.e. O-9897 (Chorcorus olitorius L.) in late jute seed production to Nitrogen (N), Phosphorus (P) and Potassium (K) was assessed in different Agro-Ecological Zones (AEZ) with increasing dose of N, P and K fertilizers. A highly significant effect was observed for plant height, number of branches/plant, number of pods/plant, pod length, number of seeds/pod, 1000 seeds weight and seed yield with the application of increasing doses of N fertilizer. There was no significant effect of increasing doses of P fertilizer on plant height, number of branches/plant, pod length and number of seeds/pod but a significant effect found for number of pods/plant, 1000 seeds weight and seed yield. No effect towards seed yield and yield contributing characters was observed with increasing doses of K fertilizer. Significantly high seed yields were found with the application of 100-20-20, 75-40-20 and 100-20-20 kg N-P-K/ha at Rangpur (AEZ No. 3b), Manikganj (AEZ No. 8d) and Kishorganj (AEZ No. 8b) respectively.
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