Khadijeh Shahsavarpour Lendeh; Hemmatollah Pirdashti; Esmaeil Bakhshandeh
Abstract
In order to investigate the effect of a native plant growth promoting bacteria (Enterobacter sp.) on some vegetative characteristics and paddy yield of rice(cv. ‘Tarom Hashemi’), a field experiment was carried out in Babol (Aghamalek village) at 2016. This experiment was arranged in split ...
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In order to investigate the effect of a native plant growth promoting bacteria (Enterobacter sp.) on some vegetative characteristics and paddy yield of rice(cv. ‘Tarom Hashemi’), a field experiment was carried out in Babol (Aghamalek village) at 2016. This experiment was arranged in split plots based on a randomized complete block design with three replications. Six levels of potassium sulfate fertilizer (PSF: 0, 25, 50, 75, 100 and 125 kg ha-1) were used as the main plots and four levels of inoculations (non-inoculation as control, seed inoculation in the seedbed condition, seedling root inoculation before transplanting time and combined both previously methods) served as the sub-plots. The results indicated that various methods of inoculation increased plant height (1.25-2.54%), tillers number per hill (TNH; 11.7-16.5%), total leaves number per hill (TLN; 12.5-14.2%), leaf area index (LAI; 7.16-17.9%) and paddy yield (PY; 14.6-19.8%) of rice and the occurring of anthesis stage were about one day sooner as compared to the control condition. In this experiment, the studied traits significantly influenced by PSF and various methods of inoculation, but the interaction effect between them were not significant. Among inoculation methods, the combined method was better than others. In addition, the values of all studied traits such as PH, TNH, TLN, LAI and PY (18.2% more than the control) increased as PSF increased from zero to 125 kg ha-1. Consequently, the application of Enterobacter sp. and PSF through improved the vegetative characteristics, particularly in LAI, TNH and TLN, resulted to increase in the radiation interception capacity, photosynthetic efficiency and improved PY of rice.