Phosphorus Efficiency of Winter Canola Cultivars and Rhizosphere Properties in Rhizobox Technique     

Fereydun Nourgholipour  Mohammad Mehdi Tehrani  Babak Moteshare Zadeh  Farhad Moshiri 《Communications in Soil Science and Plant Analysis》2019,50(1):35-48

Production of oilseed crops requires balanced fertilization, while environmental problems of applied fertilizers must be considered. We evaluated seven winter canola cultivars (Brassica napus L.) for their relative efficiency to use or acquire phosphorus (P) under deficient and sufficient conditions. Average root mean diameter (RMD), total root length (RL) and root surface area (RA), of plants were measured as well as rhizosphere properties in rhizobox technique. Water-soluble P (WSP) and phosphatase activity of treatments containing plant were higher than control. WSP increased by 2.86 mg kg^?1 soil in Gabriela and 2.63 mg kg^?1 soil in Elvis at P deficient condition, compared to the control soil. The Olsen extractable P of the treatments decreased compared to control. Variations in total dry weights of cultivars were mainly explained by the differences in P solubilizing bacteria (PSB) population, pH, and phosphatase activity. The responsible mechanism for the P efficient (PE) cultivars can be higher P uptake through larger root and changes in rhizosphere properties.  相似文献   

Phosphorus Fractionation Affected by Root Induced Changes of Two Canola Cultivars     

Nourgholipour  F.  Hosseini  H. M.  Tehrani  M. M.  Motesharezadeh  B.  Moshiri  F.  Mousavi  S. M. 《Eurasian Soil Science》2022,55(6):819-829

Eurasian Soil Science - In order to study the root-induced changes on behavior of phosphorus in the rhizosphere of two canola cultivars in order to better management of P fertilization this...  相似文献