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Book Effect of Different Sources of Phosphorus and VA  Mycorrhizae on the Availability of Phosphorus  Uptake Adn Yield of Greengram  Vigna Radiata  L   Wilczek

Download or read book Effect of Different Sources of Phosphorus and VA Mycorrhizae on the Availability of Phosphorus Uptake Adn Yield of Greengram Vigna Radiata L Wilczek written by R. Santhi and published by . This book was released on 1987 with total page 126 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Effect of Mycorrhizae on the Availability and Uptake of Phosphorus by Red Oak

Download or read book Effect of Mycorrhizae on the Availability and Uptake of Phosphorus by Red Oak written by John Albert Fisher and published by . This book was released on 1976 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Effects of Genotype  Fertilizer  and Mycorrhizal Fungi on Phosphorus Use Efficiency of Organic and Conventional Spring Wheat

Download or read book Effects of Genotype Fertilizer and Mycorrhizal Fungi on Phosphorus Use Efficiency of Organic and Conventional Spring Wheat written by Julia Louise Piaskowski and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent attention to the increasing environmental and monetary costs of mining dwindling phosphorus (P) reserves have lead to renewed efforts to design agricultural systems that use P more efficiently. The objective of these experiments was to evaluate the effects of cropping systems, plant genetics and soil microbiology on P use efficiency in crops. Field trials were conducted in five locations across Washington State over 2009 and 2010 to test the responsiveness of five spring wheat (Triticum aestivum L.) cultivars to P fertilizer and inoculation with the endophytic soil organism, arbuscular mycorrhizal fungi. These sites, representing conventional, organic and no-till management, are found within the major dryland production regions of the U.S. Pacific Northwest. Data on multiple agronomic traits were gathered over each field season during tillering, heading, grain fill and senescence. Despite high soil test values for P, yield responses were observed due to P fertilizer both years and were most pronounced for the adapted cultivars 'Louise' and 'Alpowa'. Furthermore, the effects were observed only in the organic and conventional environments that had elevated rainfall and no yield response was observed in the no-till environments regardless of annual rainfall. Phosphorus concentration in the leaves and seeds were significantly affected by P fertilizer, inoculation and cultivar. The major contributors to the cultivar variation for P use efficiency were the change in yield per uptake of P per hectare and the change in yield per seed P concentration (mg P/g seed). Inoculation with arbuscular mycorrhizal fungi had little effect on plant growth, but did significantly increase the amount of seed P taken up per unit of fertilizer added. Together, this set of field experiments demonstrate that (1) there is a response to added P fertilizer in Pacific Northwest agronomic soils; (2) the observed response is P is cultivar- and site-specific; and (3) there is genetic variation for P use efficiency in Pacific Northwest spring wheat germplasm.