Effect of Phosphorous Fertilizer and Bacterial Applications on Seed Yield of Morphologically Different Forage Pea (Pisum sativum L.) Varieties

As a result of today's modern agricultural practices, many negative consequences have been encountered due to the use of intense, inaccurate and excessive chemical fertilizers and pesticides. In particular, chemical fertilizers have reached fresh water sources as a result of washing, causing environmental pollution and this has become a threat to human, domestic and wildlife. Therefore, one of the alternatives created by experts in terms of prevention of environmental pollution and agricultural sustainability has been the use of useful bacteria instead of chemical input. In this study, carried out in Erzurum, was aimed to determine the effects of different phosphorous rates (0, 30 and 60 kg/ha P 2 O 5 ) and bacteria genotypes (control, nitrogen fixing and phosphate solvent ) on agricultural and morphological characteristics of some fodder pea cultivars. The experiment was established in Randomized Split Blocks Trial Design with three replications. In the study, were used Kirazli (semi-leafless) and Urunlu (leafed) pea cultivars, Rhizobium leguminasorum and Arthrobacter agilis bacteria and triple superphosphate 0-45-0 fertilizer.  According to the results, number of pods per plant 6.5-7.7, number of seeds per pod 5.6-6.2,  1000 seed weight 187.5-198.9 g, seed yield 1087-1663 kg/ha, seed crude protein content 30.6-31.6 % were investigated. As a result; no response was observed for phosphate fertilization since the soils of experiment plots were rich of this nutrient. Yet, Rhizobium inoculation yielded positive and significant results.