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Articles by M. Yaseen
Total Records ( 4 ) for M. Yaseen
  Zaheer Ahmad , Maqsood Ahmad Gill , Abdul Matin Shah , Tahir Mahmood , Hamud-ur-Rehman and M. Yaseen
  Seven cotton (Gossypitn hirsuturn L.) varieties were evaluated for growth and utilization efficiency of nitrogen (N) and phosphorus (P), in hydroponics using modified Johnson's solutions containing adequate (6.0 mM N and 0.20 mM P), and deficient levels of N (0.8 mM) and P (0.01 mM). Substantial differences were observed among varieties for accumulation of shoot dry weight (SDW), relative reduction in shoot biomass due to N-deficiency (NSF), and uptake by shoot in case of N, and root dry weight (RDW), root:shoot ratio (RSR), relative reduction in shoot biomass due to P-deficiency (PSF), concentration in shoot and uptake by shoot in case of P. Variety SLS-1 exhibited the minimum stress at N-deficiency (NSF = 34%) as well as P-deficiency (PSF = 59%) among all the varieties. A negative correlation (r =0.555, n =35) between SDW and RSR in P-stressed plants suggested increase RDW production at the cost SDW. Utilization efficiency in varieties remained unchanged in case of N-deficiency stress and decreased in case of P-deficiency stress as compared to control, and in both the cases differences among varieties remained statistically non-significant. Nutrient level X variety interaction was significant for all the parameters studied in case of P, whereas for N, the interaction was significant only for shoot dry weight, stress factor and uptake by shoot.
  M. Yaseen , T.Hussain , A. Hakeem and S.Ahmad
  Highest paddy and straw yields of Basmati-385 were obtained by the combined application of NPK+GM+ZnSO4. It was closely followed by NPK + GM + ZnSO4. It was observed that Zn application further increased the yields from those obtained by application of NPK + GM + FYM. Combined application of NPK, organic manures (GM or FYM) and Zn significantly increased the nitrogen and potassium concentrations while lowered the phosphorus concentration of paddy and straw. Reductibri in phosphorus was probably due to the antagnostic effect of Zn on P absorption. Results also indicate that Zn-application of soil was better than its foliar spray.
  S. Ahmad , M. Yaseen and A. Saboor
  Rice genotypes differed significantly in their growth response. Growth response in terms of paddy yield was influenced by P application, genotype and their interaction. Relative reduction in paddy yield ranged from none to 13%. The genotypes K. Basmati, NIAB-6, IRRI-6, Kernal, Basmati-370 and KSK-282 showed positive response to P application. Mostly genotypes with high P concentration had low P uptake, low phosphorus use efficiency and hence low paddy yield. NIAB-6 had used phosphorus efficiently at control P level. Rice genotypes NIAB-6, IRRI-6 and K. BASMATI were P responsive and productive and hence could be regarded as P-efficient rice genotypes. Phosphorus efficient genotypes could be grown under native or little P fertilizer application conditions.
  M. Yaseen , S. Muhammed and M. Khalid
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