2 research outputs found
EFFECT OF DIAZOTROPHIC BACTERIA AND THIAMINE ON GROWTH AND REGROWTH OF MILLET
The objective of this study was to evaluate the effect of the isolated and joint use of Azospirillum brasilense inoculation and the application of thiamine, on seed or leaf, on the development of millet in two cycles. A randomized complete block design was used in five replicates. The treatments were composed of the isolated or combined inoculation with Azospirillum brasilense and the application of thiamine, on seed (10 ml kg-1) or leaf spray (10 ppm). The relative levels of chlorophyll a, b and total, plant height, number of shoots, fresh and dry mass production and dry matter index of plants were evaluated. In the first cycle, treatments were only effective for the relative chlorophyll contents, and in general, the treatment with isolated inoculation of A. brasilense stood out, differing significantly from the treatment with thiamin applied on seed. In the second cycle, there was significant effect of the treatments on the variables of plant height and number of shoots, in which a maximum height of 165 cm and production of 140 shoots m-2 with application of thiamin on seed and with the use of A. brasilense and thiamine applied on the leaf, respectively. Thus, it was concluded that inoculation with A. brasilense increases the relative chlorophyll content in millet during the first cycle. The joint use of inoculation with A. brasilense and the application of thiamine can be used as a strategy to increase the number of shoots.O presente estudo teve como objetivo avaliar o efeito da utilizaĆ§Ć£o isolada e conjunta da inoculaĆ§Ć£o com Azospirillum brasilense e aplicaĆ§Ć£o de tiamina, via semente ou foliar, sobre o desenvolvimento do milheto, em dois ciclos. Foi utilizado o delineamento de blocos ao acaso, em cinco repetiƧƵes. Os tratamentos foram compostos pela utilizaĆ§Ć£o isolada ou conjunta da inoculaĆ§Ć£o com Azospirillum brasilense e aplicaĆ§Ć£o de tiamina, via semente (10 ml kg-1) ou spray foliar (10 ppm). Foram avaliados os teores relativos de clorofila a, b e total, altura de planta, nĆŗmero de brotaƧƵes, produĆ§Ć£o de massa fresca e seca e o Ćndice de matĆ©ria seca das plantas. No primeiro ciclo houve resposta aos tratamentos apenas para os teores relativos de clorofila, sendo que, de modo geral, o tratamento com inoculaĆ§Ć£o isolada de A. brasilense sobressaiu-se, diferindo significativamente do tratamento com aplicaĆ§Ć£o de tiamina via semente. No segundo ciclo houve efeito dos tratamentos sobre as variĆ”veis de altura de planta e nĆŗmero de brotaƧƵes, nos quais se observou altura mĆ”xima de 165 cm e produĆ§Ć£o de 140 brotaƧƵes por m2 com aplicaĆ§Ć£o de tiamina via semente e com a utilizaĆ§Ć£o conjunta do A. brasilense e da tiamina aplicada via spray foliar, respectivamente. Assim, concluiu-se que a inoculaĆ§Ć£o com A. brasilense aumenta o teor relativo de clorofila no milheto durante o primeiro ciclo. O uso conjunto de inoculaĆ§Ć£o com A. brasilense e a aplicaĆ§Ć£o de tiamina pode ser utilizados como estratĆ©gia para aumento do nĆŗmero brotaƧƵes
EFFECT OF DIAZOTROPHIC BACTERIA AND THIAMINE ON GROWTH AND REGROWTH OF MILLET
The objective of this study was to evaluate the effect of the isolated and joint use of Azospirillum brasilense inoculation and the application of thiamine, on seed or leaf, on the development of millet in two cycles. A randomized complete block design was used in five replicates. The treatments were composed of the isolated or combined inoculation with Azospirillum brasilense and the application of thiamine, on seed (10 ml kg-1) or leaf spray (10 ppm). The relative levels of chlorophyll a, b and total, plant height, number of shoots, fresh and dry mass production and dry matter index of plants were evaluated. In the first cycle, treatments were only effective for the relative chlorophyll contents, and in general, the treatment with isolated inoculation of A. brasilense stood out, differing significantly from the treatment with thiamin applied on seed. In the second cycle, there was significant effect of the treatments on the variables of plant height and number of shoots, in which a maximum height of 165 cm and production of 140 shoots m-2 with application of thiamin on seed and with the use of A. brasilense and thiamine applied on the leaf, respectively. Thus, it was concluded that inoculation with A. brasilense increases the relative chlorophyll content in millet during the first cycle. The joint use of inoculation with A. brasilense and the application of thiamine can be used as a strategy to increase the number of shoots.O presente estudo teve como objetivo avaliar o efeito da utilizaĆ§Ć£o isolada e conjunta da inoculaĆ§Ć£o com Azospirillum brasilense e aplicaĆ§Ć£o de tiamina, via semente ou foliar, sobre o desenvolvimento do milheto, em dois ciclos. Foi utilizado o delineamento de blocos ao acaso, em cinco repetiƧƵes. Os tratamentos foram compostos pela utilizaĆ§Ć£o isolada ou conjunta da inoculaĆ§Ć£o com Azospirillum brasilense e aplicaĆ§Ć£o de tiamina, via semente (10 ml kg-1) ou spray foliar (10 ppm). Foram avaliados os teores relativos de clorofila a, b e total, altura de planta, nĆŗmero de brotaƧƵes, produĆ§Ć£o de massa fresca e seca e o Ćndice de matĆ©ria seca das plantas. No primeiro ciclo houve resposta aos tratamentos apenas para os teores relativos de clorofila, sendo que, de modo geral, o tratamento com inoculaĆ§Ć£o isolada de A. brasilense sobressaiu-se, diferindo significativamente do tratamento com aplicaĆ§Ć£o de tiamina via semente. No segundo ciclo houve efeito dos tratamentos sobre as variĆ”veis de altura de planta e nĆŗmero de brotaƧƵes, nos quais se observou altura mĆ”xima de 165 cm e produĆ§Ć£o de 140 brotaƧƵes por m2 com aplicaĆ§Ć£o de tiamina via semente e com a utilizaĆ§Ć£o conjunta do A. brasilense e da tiamina aplicada via spray foliar, respectivamente. Assim, concluiu-se que a inoculaĆ§Ć£o com A. brasilense aumenta o teor relativo de clorofila no milheto durante o primeiro ciclo. O uso conjunto de inoculaĆ§Ć£o com A. brasilense e a aplicaĆ§Ć£o de tiamina pode ser utilizados como estratĆ©gia para aumento do nĆŗmero brotaƧƵes