Asian Science Citation Index is committed to provide an authoritative, trusted and significant information by the coverage of the most important and influential journals to meet the needs of the global scientific community.  
ASCI Database
308-Lasani Town,
Sargodha Road,
Faisalabad, Pakistan
Fax: +92-41-8815544
Contact Via Web
Suggest a Journal
 
Articles by R. Ansari
Total Records ( 5 ) for R. Ansari
  S. M. Alam , R. Ansari , S. M. Mujtaba , M. A. Khan and Saboohi Raza
  Nutrient depletion in the farm land areas has brought terrible devastation in some cropping areas of a country. There is no vegetation whatever, despite adequate rainfall and chemical fertilizers are now re-vegetating such areas. They have rapidly overtaken organic matter as a chief source of nutrients and expert opinion believes that such external nutrients source are the only way to sustain the food requirement of the population. If sustainability is to be maintained as the first priority, then other important components such as efficiency of input use, economic return and environmental protection can all be used appropriately as part of the sustainability phenomenon.
  S.M. Alam , S.A. Ala , A.R. Azmi , M.A. Khan and R. Ansari
  Not available
  S. M. Alam and R. Ansari
  Rice plants growing on a calcareous soil, supplied with various levels of labeled Fe59 and Mn54 subjected to two moisture regimes and under flooded(anaerobic) condition, the number of tillers, plant height, dry matter yield and contents of Fe, Mn and P in rice plants increased considerably indicating that soil submergence enhanced the availability of Fe, Mn and P in the growth medium. Mn content in the plant under flooded condition was always higher than that of Fe under similar condition. Unflooded (aerobic) condition showed less growth and nutrient contents in rice plants than the flooded (anaerobic) condition.
  S.M. Alam , M. A. Khan , M. Ali and R. Ansari
  Water culture experiment was conducted to observe the effects of different levels of Zn and P alone and in combination on the growth ,chlorophyll and peroxidase contents of rice (cv. Shadab).The concentrations for the study were Zn: 0.0, 5.0, 10.0, and 20.0 mg L-11, and P 0.0, 20.0, 40.0, 60.0 mg L -1. It was observed that the growth of fresh and dry weights of shoot, root and its length were increased in more or less all the treatments as compared to control. Contrary to this the chlorophyll and peroxidase contents were substantially decreased with increasing levels of Zn and P. It was observed that intermediate levels of both Zn and P were seemed to be beneficial for the growth of rice.
  Shirazi M.U. , B. Khanzada , S.M. Alam , R. Ansari , S.M. Mujtaba , Muhammad Ali , Mukhtiar Ali and M.A. Khan
  Nutrients variation studies were conducted to understand the nutrient cycle (particularly nitrogen, phosphorus and cations) in four year old Acacia plantation ( Acacia nilotica and Acacia ampliceps) and the impact of salinity on nutrient cycling. Leaf samples were collected around the umbrella of 10 trees of each Acacia for nutrient content at the interval of two months. Soil salinity in the immediate proximity of the tree trunk was also monitored. Analytical results showed that both the species had adequate amount of nitrogen and phosphorus. Potassium was also near the critical levels. However, the Ca content was comparatively higher, which might be due to presence of organic acids during decomposition of organic residues present at the soil surface. Studies on monthly variation in mineral elements suggested that only single time period for sampling to study the nutrient status or scheduling time of fertilizer application is not appropriate. Therefore, the best time for studying nutrient status and fertilizer application would be during March-April or September-October, when the weather is mild and salinity is moderate.
 
 
 
Copyright   |   Desclaimer   |    Privacy Policy   |   Browsers   |   Accessibility