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Nitrogen supply associated with rhizobacteria in the first productive cycle of Marandu grass
Fernando Antônio Rebouças Sampaio,Marcelo Carvalho Minhoto Teixeira Filho,Carlos Eduardo da Silva Oliveira,Arshad Jalal,Eduardo Henrique Marcandalli Boleta,Bruno Horschut de Lima,Poliana Aparecida Leo 한국작물학회 2021 Journal of crop science and biotechnology Vol.24 No.4
The rhizobacteria of genus Azospirillum and Bacillus are efective at fxing atmospheric nitrogen, promote plant growth and can largely contribute to benefcial recovery from degraded pastures. This study aimed to evaluate the development and nutritional status of Urochloa brizantha cv. Marandu in response to nitrogen doses along with inoculation of Azospirillum brasilense and Bacillus subtilis. The experiment was carried in a completely randomized design in a greenhouse with four replications and in factorial scheme 4×5. The treatments were consisted of seeds inoculation (without inoculation, A. brasilense (strains Ab-V5, Ab-V6), B. subtilis (strain CCTB04) and co-inoculation with strains of A. brasilense+strain of B. subtilis, and nitrogen doses (0, 50, 100, 150 and 200 kg ha−1, equivalent to 0, 25, 50, 75 and 100 mg dm−3 N) from urea. The sole inoculation of A. brasilense and B. subitilis promoted plant height of Marandu grass along with nitrogen fertilization. The co-inoculation of these bacteria increased potassium accumulation in Marandu grass along with nitrogen doses. Regardless of bacterial inoculation, number of tillers, leaves, dry matter accumulation, crude protein and accumulations of N, P, Ca, S and Mg were increased with increasing nitrogen doses in the frst forage cycle.
Nutrition and yield of hydroponic arugula under inoculation of beneficial microorganisms
Gato Isabela Martins Bueno,da Silva Oliveira Carlos Eduardo,Oliveira Thaissa Julyanne Soares Sena,Jalal Arshad,de Almeida Moreira Vitória,Giolo Victoria Moraes,Vitória Letícia Schenaide,de Lima Bruno 한국원예학회 2023 Horticulture, Environment, and Biotechnology Vol.64 No.2
The use of benefi cial fungi and bacteria can improve growth, yield and food quality of plants. The electrical conductivity (EC) of a nutrient solution is closely linked to better nutrition of arugula plants in a hydroponic system. Therefore, objectives of current study were to evaluate isolated and combined eff ect of inoculation with Azospirillum brasilense and Trichoderma hazianum under two ECs on root-shoot biomass, nutrition and yield of arugula in hydroponic cultivation system. The experi- ment was designed in a strip-plot block with fi ve replications in a 4 × 2 factorial scheme. The treatments were consisted of four microbial inoculations (without, A. brasilense, T. harzianum and co-inoculation of both) and two ECs (1.4 and 1.6 dS m −1). The higher EC with A. brasilense inoculation provided greater growth of arugula plants in a hydroponic system. Inoculation with A. brasilense has increased leaf area, shoot–root length, leaf chlorophyll index (LCI) and shoot ammonium accumulation while reduced root-shoot nitrate accumulation. The leaf nutrition or biofortifi cation of arugula plants with K, S, Ca, Mg, Zn, Fe, and Mn was improved under both isolated and combined inoculations of A. brasilense and T. harzianum .