Effect of phosphorus deficiency on some agrophysiological and biochemical parameters in faba bean ([i]Vicia faba[/i])-rhizobia symbiosis

To understand how phosphorus (P) nutrition of the Vicia faba-rhizobia symbiosis could be affected under low soil P level some agrophysiological and biochemical parameters as plant growth, nodulation and phosphatises activities were assessed under P deficiency. This study was carried out on three faba bean varieties commonly cultivated in Haouz semi-arid region of Morocco. The results showed that P deficiency reduced plant growth and nodulation and increased nodule acid phosphatise and phytase activities in all of the tested faba bean-rhizobia symbiotic combinations.