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Articles by I. Mahmood
Total Records ( 2 ) for I. Mahmood
  I. Mahmood and R. Rizvi
  Arbuscular Mycorrhizal Fungi (AMF) are key components of the soil microbiota that play an essential role in plant growth, plant protection and soil quality. These fungi are widespread in agriculture systems and are especially relevant for organic farming because they can act as natural fertilisers and enhance plant yield. Data on the interaction between organic practices and AMF populations are limited and inconsistent. Here, we explore the various roles that AMF play in organic farming systems with special emphasis on their contribution to crop productivity. Present results highlight that organic low-input systems have a high potential to maintain the mycorrhizas, keeping the soil fertile and productive and point the need to incorporate VAM technology in organic farming to stop deterioration of agricultural and forest land and other adverse factors.
  S. Kaleem , F.U. Hassan , M.A.A.H.A. Bukhsh , I. Mahmood , R. Ullah , M. Ahmad and A. Wasaya
  Sunflower crop has an ability to maintain high level of viability in varying environments. Prevailing temperature at pollination and after anthesis affects pollen health, fertilization process and ultimately the seed filling and assimilate partitioning that varies in different circles/whorls of sunflower heads. Field experiments one each in spring and autumn 2007 were conducted at Pir Mehr Ali Shah, Arid Agriculture University Rawalpindi, Pakistan to evaluate and document the oil and fatty acid accumulation in different circles/whorls of sunflower heads as influenced by varying environments. Sunflower hybrid S-278 was planted in randomized complete block design with four replications. Each head was divided into three equal circles (outer, middle and central) at maturity, thereafter, oil and fatty acid distribution was separately determined in each circle. Oil and fatty acid accumulated in three circles differed significantly. Outer circle accumulated higher oil content during spring which decreased to the minimum in central circle while, autumn season showed contrasting results in which oil contents progressively increased from outer to central circle. The maximum oleic acid was observed in outer circle which decreased to minimum in central circle during the both spring and autumn seasons, however, linoleic acid consistently increased from outer to central circle during both the seasons. Thus, oleic and linoleic acid depicted inverse relation with circles. Saturated fatty acid (palmatic acid and stearic acid) did not depict any consistent pattern for accumulation in different circles during both the seasons. Overall, spring planted crop exhibited significantly higher values for oil and oleic contents in comparison with autumn planting, which may be attributed to higher temperature, sunshine hours and accumulation of more growing degree days during the spring.
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