Effect of Phosphorus Application and Rhizobium Inoculation on the Yield, Nodulation and Nutrient Uptake in Field Pea (Pisum sativum sp arvense L.)

A field experiment was conducted during 2005-06 and 2006-07 growing seasons in Van, Turkey, to determine the effects of Rhizobium inoculation and different levels of phosphorus on the yield and nutrient uptake of field pea (Pisum sativum sp. arvense L.). Phosphorus application had significant effect on the plant height, number of branches, root and shoot dry weight, number of nodule, seed and biomass yields, number of pod, crude protein rate and phosphorus content of seed in both years. There was linear increase in the root dry weight, nodule number, crude protein rate and phosphorus content of seed up to 90 kg P(2)O(5) ha(-1) application. The highest seed yield was obtained under treatment 60 kg P(2)O(5) ha(-1)+ inoculation with 2855.0 and 2828.3 kg ha(-1) in 2005-06 and 2006-07, respectively. Plant height, number of branches, shoot dry weight, number of pod, seed and biomass yields increased up to 60 kg P(2)O(5) ha(-1) and then decreased at 90 kg P(2)O(5) ha(-1). Inoculation treatment had also significant effect on the plant height, number of branches, root and shoot dry weight, number of nodules, seed and biomass yields, number of pod, crude protein rate and phosphorus content of seed in both years. The highest values regarding these parameters were obtained from inoculated plants, whereas the lowest values were obtained from the uninoculated plants.