Post by account_disabled on Oct 26, 2023 5:59:09 GMT -5
Due to the ability of some bacteria to live in mutualism with the plant kingdom, we set out to study the effectiveness of one in particular, the bacterium Azospirillum brasilense , which has gained visibility in the agronomist market. Four bean samples were cultivated for 20 days, all receiving identical treatments. Each sample was cultivated on specific land, in which two of the samples had the presence of plowed bacteria next to the soil, one even having, in addition to the presence of the bacteria, also chemical fertilizer.
After 20 days of cultivation, the greater growth capacity acquired by the samples in the presence of the bacteria became evident, in addition to demonstrating an even better result when cultivated together with chemical fertilizer. The results led us to conclude that the bacterium Azospirillum brasilense plowed into the soil before cultivating beans provides greater growth power for this legume, an effect that europe mobile number list manifested itself in the growth of the stem and root. Keywords: Rhizobacteria, beans, agriculture, bacteria. INTRODUCTION The most important Brazilian bodies in the agronomist sector have frequently used the nomenclature “rhizobacteria”, originating from the English version “rhizobacteria”, to refer to bacteria that live in mutualism with the plant kingdom. This nomenclature has existed for some decades in English and American literature, and, more recently, it has entered Brazilian and Portuguese literature. Plant growth-promoting rhizobacteria can act through several mechanisms, such as biological control of pathogens, biological nitrogen fixation, production of photohormones and compounds that chelate nutrients in the soil.
Bacteria of the genus Azospirillum are part of this group, including the species Azospirillum brasilense, thanks to their ability to impregnate the soil with ammonia due to the presence of the enzyme dinitrogenase, which converts nitrogen gas into ammonia, and the production of phytohormones that stimulate root growth. [2,3] . Several studies have attempted to demonstrate the effectiveness of this bacterium, with its influence being most evident in leguminous crops [3,8] . The most used methodology in cultivation with the rhizobacteria Azospirillum brasilense is inoculation, which consists of immersing the seed in water contaminated by the bacteria, long enough for the seed to acquire a wrinkled appearance, and then planting it [4] . Another very common method of using the bacteria is irrigating crops with contaminated water.
After 20 days of cultivation, the greater growth capacity acquired by the samples in the presence of the bacteria became evident, in addition to demonstrating an even better result when cultivated together with chemical fertilizer. The results led us to conclude that the bacterium Azospirillum brasilense plowed into the soil before cultivating beans provides greater growth power for this legume, an effect that europe mobile number list manifested itself in the growth of the stem and root. Keywords: Rhizobacteria, beans, agriculture, bacteria. INTRODUCTION The most important Brazilian bodies in the agronomist sector have frequently used the nomenclature “rhizobacteria”, originating from the English version “rhizobacteria”, to refer to bacteria that live in mutualism with the plant kingdom. This nomenclature has existed for some decades in English and American literature, and, more recently, it has entered Brazilian and Portuguese literature. Plant growth-promoting rhizobacteria can act through several mechanisms, such as biological control of pathogens, biological nitrogen fixation, production of photohormones and compounds that chelate nutrients in the soil.
Bacteria of the genus Azospirillum are part of this group, including the species Azospirillum brasilense, thanks to their ability to impregnate the soil with ammonia due to the presence of the enzyme dinitrogenase, which converts nitrogen gas into ammonia, and the production of phytohormones that stimulate root growth. [2,3] . Several studies have attempted to demonstrate the effectiveness of this bacterium, with its influence being most evident in leguminous crops [3,8] . The most used methodology in cultivation with the rhizobacteria Azospirillum brasilense is inoculation, which consists of immersing the seed in water contaminated by the bacteria, long enough for the seed to acquire a wrinkled appearance, and then planting it [4] . Another very common method of using the bacteria is irrigating crops with contaminated water.