نوع مقاله : مقاله پژوهشی
نویسندگان
1 گروه زراعت، دانشکده علوم زراعی، دانشگاه علوم کشاورزی و منابع طبیعی ساری
2 دانشجوی کارشناسی ارشد اگروتکنولوژی، دانشکده علوم زراعی، دانشگاه علوم کشاورزی و منابع طبیعی ساری
3 پژوهشکده ژنتیک و زیستفناوری کشاورزی طبرستان، دانشگاه علوم کشاورزی و منابع طبیعی ساری، ایران.
4 گروه زراعت، دانشکده علوم زراعی، دانشگاه علوم کشاورزی و منابع طبیعی ساری، ساری، ایران
چکیده
کلیدواژهها
موضوعات
عنوان مقاله [English]
نویسندگان [English]
Background and Objective: The use of biofertilizers in sustainable agriculture and the production of healthy crops with higher yields in the strategic rice crop is very important. ،This research was conducted with the aim of evaluation the effect of plant growth promoting bacteria on yield and yield components of rice is in reduced amounts of chemical fertilizers.
Materials and Methods: The experiment was conducted in the form of split plot arrangement in a randomized complete block design with three replications in 2022. The treatments were two levels of chemical fertilizer (100 and 75 percent of fertilizer consumption based on the results of the soil test as optimal and reduced levels of fertilizer, respectively) and four inoculation treatments with plant growth promoting bacteria (separate inoculation of Rahnella aquatilis, Burkholderia cepacia and a co-inoculation (R. aquatilis+B. cepacia) and control (no inoculation)).
Results: According to the results, there was no significant difference between the optimal and reduced fertilizer levels in terms of the studied traits. While, the use of plant growth promoting bacteria improved the studied traits of rice compared to the control treatment (no inoculation). In other words, combined inoculation of R. aquatilis and B. cepacia, increases the height of the plant (11.3 percent), panicle length (11.6 percent), the number of total tillers per hill (29.1 percent), the total number of filled seeds in panicle (27 percent), thousand seed weight (7.9 percent), grain yield (25.2 percent), biological yield (20.6 percent),
کلیدواژهها [English]