Azotlu gübre ve bakteri aşılamasının yerfıstığında verim ve bazı verim komponentleri üzerine etkileri

Abstract

-87- 7. SUMMARY This study was conducted to determine the effects of different levels of nitrogen fertilizer and rhizobia on grain yield and yield components at Antalya-Gazipaşa during 1991 and 1992 growing seasons. Gazipaşa, Com and NC-7 peanut cultivars were used in the trail as plant material. 120 kg/ha phosphorus fertilization was used before sowing. Four levels of nitrogen fertilization (0,20,40,60 kg/ha) and four levels of rh i zob ia. (without rhizobia 500 g, 1000 g, and 1500 g rhi- sobia/100 kg seed) were applied at sowing. Design of the trial was split-split-plot with three rep lications in randomized blocks. Cultivars were main plots, nitrogen levels were subplots, and rhizobia dozes were sub- subplots. Data from study was subjected to statistical analyses, and differences between cultivars, fertilizer and rhizobia dozes were inspected. Results from study can be summarized as fallows; 1. In this study, some considerable differencies were deter mined among the cultivars. The highest yield (343.4 kg/da) was determined in the variety of Gazipaşa. 2. The highest pod yield was obtained from plots which were applied 20 kg/ha nitrogen and 500 g Rhizobia/100 kg seed. Number of pod per plant was reduced by decreasing nitrogen and Rhizobia dozes. 3. The highest 1000 seed weight was determined in 20 kg/ha nitrogen with 100 g/100 kg seed Rhizobia.-88- 4. 40 kg/ha nitrogen and 500 g/100 kg seed Rhizobia has given higher protein percent. 5. Hay yield was risen by the increase of nitrogen rates. But when Rhizobia was applied, hay yield wasn't reduced by the decrease of nitrogen levels. On the other hand, inocula tion has compensated the effect of 40 kg/ha nitrogen for hay yield. 6. Application nitrogen fertilizer has decreased formation of nodule.

-87- 7. SUMMARY This study was conducted to determine the effects of different levels of nitrogen fertilizer and rhizobia on grain yield and yield components at Antalya-Gazipaşa during 1991 and 1992 growing seasons. Gazipaşa, Com and NC-7 peanut cultivars were used in the trail as plant material. 120 kg/ha phosphorus fertilization was used before sowing. Four levels of nitrogen fertilization (0,20,40,60 kg/ha) and four levels of rh i zob ia. (without rhizobia 500 g, 1000 g, and 1500 g rhi- sobia/100 kg seed) were applied at sowing. Design of the trial was split-split-plot with three rep lications in randomized blocks. Cultivars were main plots, nitrogen levels were subplots, and rhizobia dozes were sub- subplots. Data from study was subjected to statistical analyses, and differences between cultivars, fertilizer and rhizobia dozes were inspected. Results from study can be summarized as fallows; 1. In this study, some considerable differencies were deter mined among the cultivars. The highest yield (343.4 kg/da) was determined in the variety of Gazipaşa. 2. The highest pod yield was obtained from plots which were applied 20 kg/ha nitrogen and 500 g Rhizobia/100 kg seed. Number of pod per plant was reduced by decreasing nitrogen and Rhizobia dozes. 3. The highest 1000 seed weight was determined in 20 kg/ha nitrogen with 100 g/100 kg seed Rhizobia.-88- 4. 40 kg/ha nitrogen and 500 g/100 kg seed Rhizobia has given higher protein percent. 5. Hay yield was risen by the increase of nitrogen rates. But when Rhizobia was applied, hay yield wasn't reduced by the decrease of nitrogen levels. On the other hand, inocula tion has compensated the effect of 40 kg/ha nitrogen for hay yield. 6. Application nitrogen fertilizer has decreased formation of nodule.