Foliar application of molybdenum on cover crops and response of common beans in successive cultivation

Brandelero, Fernanda Daniela; Kutz, Talita Slota; Vargas, Thiago de Oliveira; Modolo, Alcir José; Cassol, Luís César; Oliveira, Marisa de Cacia; Santos, Ricardo Henrique Silva

doi:10.1590/0034-737x202067010006

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“…Molybdenum is indispensable for the metabolism of N 2 , as it is part of the enzymes nitrate reductase and nitrogenase, essential for plant growth and development [30]. Due to the high mobility of molybdenum in the plant, topdressing fertilization can provide good results as long as it is carried out at the beginning of the period of vegetative development of the crop [31]. Cobalt is useful in the Fabaceae family because it participates in the structure of vitamin B12, which regulates oxygen concentration in the nodules, preventing the inactivation of the enzyme nitrogenase [32].…”

Section: Introductionmentioning

confidence: 99%

Reinoculation in Topdressing of Rhizobium tropici, Azospirillum brasilense, and the Micronutrients Mo/Co in Common Bean

Ribeiro,

Teixeira,

Silva

et al. 2024

Agronomy

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Biological nitrogen fixation (BNF) can provide the necessary nitrogen for bean crops; however, for this to occur, important limitations involving the inoculant application technology need to be overcome.The use of co-inoculation is a management technique used to obtain benefits and increase the potential of N2 fixation from the association between bacteria from the rhizobia group, such as R. tropici, and bacteria that promote plant growth, such as A. brasilense, in association with the addition of nutrients that allow greater efficiency of bacteria fixing atmospheric N2. This study aimed to evaluate the bean response to the reinoculation of R. tropici in co-inoculation with A. brasilense in a mixture with the micronutrients Co/Mo, in the winter season of 2021, in Anápolis-GO, Brazil. A randomized block design was used, with four replications, and the following treatments (TRs) were studied: TR1—reinoculation with R. tropici; TR2—reinoculation with co-inoculation of R. tropici + A. brasilense; TR3—reinoculation of R. tropici + Mo/Co micronutrients; TR4—reinoculation with co-inoculation R. tropici + A. brasilense + Mo/Co micronutrients; TR5—inoculation via seed, without reinoculation; TR6—mineral N fertilization in the sowing furrow and topdressing; TR7—control, without any N source. At stage R6, nodulation characteristics (number and dry mass of nodules) and the morphophysiological parameters of the plants (main root length, root dry mass, plant height, shoot dry mass, leaf area, and leaf N content in the shoot) were evaluated. At harvest, the final plant stand and components (number of pods per plant, number of grains per pod, and average weight of one hundred grains) were determined, in addition to grain yield. It was concluded that inoculation followed by reinoculation in topdressing with R. tropici in co-inoculation with A. brasilense plus Mo/Co, compared to mineral nitrogen fertilization, improves the efficiency of the nodulation process and the morphophysiological characteristics of the common bean crop. Seed inoculation and topdressing application with R. tropici, associated with co-inoculation with A. brasilense + Mo and Co, have the potential to completely replace mineral nitrogen fertilization in common bean crops.

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Section: Introductionmentioning

confidence: 99%

Reinoculation in Topdressing of Rhizobium tropici, Azospirillum brasilense, and the Micronutrients Mo/Co in Common Bean

Ribeiro,

Teixeira,

Silva

et al. 2024

Agronomy

View full text Add to dashboard Cite

show abstract

Foliar application of molybdenum on cover crops and response of common beans in successive cultivation

Abstract: Foliar application of molybdenum on cover crops and response of common beans in successive...

Cited by 1 publication

References 6 publications

Reinoculation in Topdressing of Rhizobium tropici, Azospirillum brasilense, and the Micronutrients Mo/Co in Common Bean

Reinoculation in Topdressing of Rhizobium tropici, Azospirillum brasilense, and the Micronutrients Mo/Co in Common Bean

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