Effects of Biofertilizer Produced from Bradyrhizobium and Streptomyces griseoflavus on Plant Growth, Nodulation, Nitrogen Fixation, Nutrient Uptake, and Seed Yield of Mung Bean, Cowpea, and Soybean

Abstract

The use of biofertilizers is important for sustainable agriculture, and the use of nodule bacteria and endophytic actinomycetes is an attractive way to enhance plant growth and yield. This study tested the effects of a biofertilizer produced from Bradyrhizobium strains and Streptomyces griseoflavus on leguminous, cereal, and vegetable crops. Nitrogen fixation was measured using the acetylene reduction assay. Under N-limited or N-supplemented conditions, the biofertilizer significantly promoted the shoot and root growth of mung bean, cowpea, and soybean compared with the control. Therefore, the biofertilizer used in this study was effective in mung bean, cowpea, and soybean regardless of N application. In this study, significant increments in plant growth, nodulation, nitrogen fixation, nitrogen, phosphorus, and potassium (NPK) uptake, and seed yield were found in mung beans and soybeans. Therefore, Bradyrhizobium japonicum SAY3-7 plus Bradyrhizobium elkanii BLY3-8 and Streptomyces griseoflavus are effective bacteria that can be used together as biofertilizer for the production of economically important leguminous crops, especially soybean and mung bean. The biofertilizer produced from Bradyrhizobium and S. griseoflavus P4 will be useful for both soybean and mung bean production.

Contrasting Impacts of Long-Term Application of Biofertilizers and Organic Manure on Grain Yield of Winter Wheat in North China Plain

“…The grain yields in the treatments that received up to 50% reduction of chemical fertilizers (CL0, CL1, and CL2) were 6.8-12.4% higher, and those in treatments with 25% and 0% recommending dose of chemical fertilizers (CL3 and CL4) in the study area, even the same dose of organic manure and biofertilizers, were much less than that in the chemical fertilizers application alone treatment during the growing seasons, respectively. Our results indicate that organic manure and biofertilizers amendments could substitute about half of the recommended chemical fertilizers in winter wheat production without decreasing grain yield, and this was supported with other findings [24,27]. These results ( Figure 4) were in accordance with previous studies about the effects of organic manure and biofertilizers application on cotton and wheat yields [25,37,38].…”

“…Research [25,26] reported that the wheat grain yields were comparable in the treatments that received 80 t ha −1 yr −1 of organic manure or 204-252 kg N ha −1 yr −1 chemical N-fertilizers. As for biofertilizers, [27][28][29] reported that application of one biofertilizers obtained from sewage sludge at 7.2 L ha −1 increased maize grain yield by 17% compared with the untreated control and [10,30,31] revealed that biofertilizers amendments reduced inorganic N-fertilizers by 25% without decreasing rice yield in India [32].…”

Organic Cowpea “Vigna unguiculatea” Production by Smart Agritechnique of Organic Fertilizers Mixture ”OFM” and Vermitea Levels and Beneficial Microbes “BM”

“…It improves soil fertility fixing the atmospheric nitrogen "fix 46 to 103 kg N/h" annually. They can reduce the need of N chemical fertilizer reflects on the environmental cleaning, because of biological N fixation for environmentally friendly and is a good idea for sustainable agriculture (Ezeaku et al, 2015;Lyngdoh et al, 2017 andHtwe et al, 2019) Organic farming for boost agricultural production to important multi features e.g., it is rich in nutrients, vitamins, plant hormones, growth regulators and free from pathogens. Different sources of organic fertilizers provide all nutrients, hormones and vitamins in readily available forms and enhance uptake them by plants and play a major role for developing plant growth and yield and raising the soil quality.…”

“…Different sources of organic fertilizers provide all nutrients, hormones and vitamins in readily available forms and enhance uptake them by plants and play a major role for developing plant growth and yield and raising the soil quality. Significantly affected on the quality and mineral content of NPK in seeds of pea plants (Htwe et al, 2019) and increased its content of zinc and other minerals under application of farmyard manure compost and biofertilizers. Organic manures stimulate the beneficial microorganisms activities, which makes the plants to get the macro and micro-nutrients by enhancing biological, chemical and physical properties, increasing nutrient solubility, alter soil salinity (Rajiv et al,.…”

“…Organic manures stimulate the beneficial microorganisms activities, which makes the plants to get the macro and micro-nutrients by enhancing biological, chemical and physical properties, increasing nutrient solubility, alter soil salinity (Rajiv et al,. 2009;Yoganathan et al, 2013;Lyngdoh et al, 2017;Piya et al, 2018 andHtwe et al, 2019). Chicken manure, vermicompost can be a good substitute for chemical fertilizers and remove the pesticides and adverse the chemical pollution in newly sandy soil.…”