Características de pastos de milheto ou capim sudão sobressemeados na cultura da soja
The objective was to evaluate pearl millet and sudangrass, single or mixed with ryegrass, implanted by overseeding in the soybean crop or by no-tillage after harvesting the grains. The experiment took place in 2019 and 2020 in a randomized block design with a 4x2 factorial scheme, with four replicat...
Autor principal: | Candiotto, Lucas |
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Universidade Tecnológica Federal do Paraná
2021
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riut-1-253482021-06-23T06:03:53Z Características de pastos de milheto ou capim sudão sobressemeados na cultura da soja Characteristics of pearl millet or sudangrass pastures in overshoot insoybean culture Candiotto, Lucas Missio, Regis Luis https://orcid.org/0000-0002-4545-4685 http://lattes.cnpq.br/9307210422715885 Soares, André Brugnara https://orcid.org/0000-0001-8328-5299 http://lattes.cnpq.br/8437766432982210 Missio, Regis Luis https://orcid.org/0000-0002-4545-4685 http://lattes.cnpq.br/9307210422715885 Aiolfi, Ricardo Beffart https://orcid.org/0000-0002-6035-4236 http://lattes.cnpq.br/5913544242171529 Soja - Cultivo Pastagens Milheto Palha - Utilização na agricultura Plantas forrageiras Forragem Soybean - Planting Pastures Millet Straw - Utilization Forage plants Forage CNPQ::CIENCIAS AGRARIAS::AGRONOMIA Agronomia The objective was to evaluate pearl millet and sudangrass, single or mixed with ryegrass, implanted by overseeding in the soybean crop or by no-tillage after harvesting the grains. The experiment took place in 2019 and 2020 in a randomized block design with a 4x2 factorial scheme, with four replications. Eight treatments were used: 4 different pastures (single sudangrass, sudangrass mixed with ryegrass, single pearl millet, pearl millet mixed with ryegrass) in 2 seasons / implantation methods (overseeding in the soybean crop in stage R6 or sowing by no-tillage after soybean harvest). Plant stand evaluation was performed at 10, 20 and 30 days after sowing. The pasture was managed by making cuts when it reached 60 cm, with defoliation intensity of 50%. Before the cuts, the pastures were evaluated: forage mass, heights, lodging index, forage density, tiller population density, and morphological composition. With the forage mass data, total forage production, the daily and monthly forage accumulation rate (forage production dynamics) were obtained. The period of use of the pastures was considered the interval between the first and the last cut of each treatment. The results were compared using the Tukey test (α = 0.05). Interaction (P<0.05) was verified between agricultural year and sowing time for plant height, plant stand, tiller population density, pasture utilization time, total forage production, plant lodging and material proportion dead. These variables were higher (P<0.05) for the pastures overseeded in R6 in 2019, with the exception of the plant stand, tiller density and plant lodging, with no difference in 2020 between sowing times. The pasture utilization time was higher (P<0.05) in the overseeded pastures in both agricultural years. There was no interaction (P<0.05) between seasons and types of pasture for the plant stand, tiller density and morphological separation. The plant stand was higher (P<0.05) for single pearl millet, while tiller density was higher for single sudangrass. The proportion of leaves was higher (P<0.05) in single crops, that of stalks in pastures of single sudangrass, and that of dead material was higher in pastures of sudangrass, regardless of whether in single cultivation or mixed with ryegrass. There was a significant interaction between months and sowing times for the rate of monthly forage accumulation, with greater (P<0.05) accumulation for the overhanging pastures, and greater accumulation in the months of March and April. The overseeding of pearl millet or sudangrass over the soybean crop makes it possible to anticipate the use of pastures, increasing the time of use of pastures and the production of forage. Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) Objetivou-se avaliar o milheto e o capim sudão solteiros ou consorciados com azevém implantados por sobressemeadura na cultura da soja ou por plantio direto após a colheita dos grãos. O experimento ocorreu nos anos de 2019 e 2020 em delineamento de blocos ao acaso com esquema fatorial 4x2, com quatro repetições. Foram utilizados 8 tratamentos: 4 pastagens diferentes (capim sudão solteiro, capim sudão em mescla com azevém, milheto solteiro, milheto em mescla com azevém) em 2 épocas/métodos de implantação (sobressemeadura a lanço na cultura da soja em estágio R6 ou semeadura por plantio direto após a colheita da soja). Foi realizada a avaliação de estande de plantas aos 10, 20 e 30 dias após a semeadura. A pastagem foi manejada realizando cortes quando atingia 60 cm, com intensidade de desfolha de 50%. Antes dos cortes eram realizadas as avaliações das pastagens: massa de forragem, alturas, índice de acamamento, densidade de forragem, densidade populacional de perfilhos, e composição morfológica. Com os dados da massa de forragem foram obtidas a produção de forragem total, a taxa de acúmulo diária e mensal da forragem (dinâmica de produção de forragem). O período de utilização das pastagens foi considerado o intervalo entre o primeiro e o último corte de cada tratamento. Os resultados foram comparados pelo teste de Tukey (α = 0,05). Foi verificada interação (P<0,05) entre ano agrícola e época de semeadura para a altura das plantas, estande de plantas, densidade populacional de perfilhos, tempo de utilização da pastagem, produção total de forragem, acamamento de plantas e proporção de material morto. Essas variáveis foram superiores (P<0,05) para os pastos sobressemeados em R6 em 2019, com exceção do estande de plantas, da densidade de perfilhos e acamamento de plantas, não havendo diferença em 2020 entre as épocas de semeadura. O tempo de utilização da pastagem foi superior (P<0,05) nos pastos sobressemeados em ambos os anos agrícolas. Não foi verificado interação (P<0,05) entre épocas e tipos de pastagem para o estande de plantas, densidade de perfilhos e separação morfológica. O estande de plantas foi superior (P<0,05) para o milheto solteiro, enquanto a densidade de perfilhos foi maior para o capim sudão solteiro. A proporção de folhas foi maior (P<0,05) nos cultivos solteiros, a de colmos nas pastagens de capim sudão solteiro, e a de material morto foi superior nas pastagens de capim sudão, independente se em cultivo solteiro ou em mescla com azevém. Ocorreu interação significativa entre meses e épocas de semeadura para a taxa de acúmulo mensal de forragem, com maior (P<0,05) acúmulo para os pastos sobressemeados, e maiores acúmulos nos meses de março e de abril. A sobressemeadura de milheto ou capim sudão sobre a cultura da soja possibilita a antecipação da utilização das pastagens, elevando o tempo de utilização dos pastos e a produção de forragem. 2021-06-22T18:27:05Z 2021-06-22T18:27:05Z 2021-05-20 masterThesis CANDIOTTO, Lucas. Características de pastos de milheto ou capim sudão sobressemeados na cultura da soja. 2021. Dissertação (Mestrado em Agronomia) - Universidade Tecnológica Federal do Paraná, Pato Branco, 2021. http://repositorio.utfpr.edu.br/jspui/handle/1/25348 por openAccess application/pdf Universidade Tecnológica Federal do Paraná Pato Branco Brasil Programa de Pós-Graduação em Agronomia UTFPR |
institution |
Universidade Tecnológica Federal do Paraná |
collection |
RIUT |
language |
Português |
topic |
Soja - Cultivo Pastagens Milheto Palha - Utilização na agricultura Plantas forrageiras Forragem Soybean - Planting Pastures Millet Straw - Utilization Forage plants Forage CNPQ::CIENCIAS AGRARIAS::AGRONOMIA Agronomia |
spellingShingle |
Soja - Cultivo Pastagens Milheto Palha - Utilização na agricultura Plantas forrageiras Forragem Soybean - Planting Pastures Millet Straw - Utilization Forage plants Forage CNPQ::CIENCIAS AGRARIAS::AGRONOMIA Agronomia Candiotto, Lucas Características de pastos de milheto ou capim sudão sobressemeados na cultura da soja |
description |
The objective was to evaluate pearl millet and sudangrass, single or mixed with ryegrass, implanted by overseeding in the soybean crop or by no-tillage after harvesting the grains. The experiment took place in 2019 and 2020 in a randomized block design with a 4x2 factorial scheme, with four replications. Eight treatments were used: 4 different pastures (single sudangrass, sudangrass mixed with ryegrass, single pearl millet, pearl millet mixed with ryegrass) in 2 seasons / implantation methods (overseeding in the soybean crop in stage R6 or sowing by no-tillage after soybean harvest). Plant stand evaluation was performed at 10, 20 and 30 days after sowing. The pasture was managed by making cuts when it reached 60 cm, with defoliation intensity of 50%. Before the cuts, the pastures were evaluated: forage mass, heights, lodging index, forage density, tiller population density, and morphological composition. With the forage mass data, total forage production, the daily and monthly forage accumulation rate (forage production dynamics) were obtained. The period of use of the pastures was considered the interval between the first and the last cut of each treatment. The results were compared using the Tukey test (α = 0.05). Interaction (P<0.05) was verified between agricultural year and sowing time for plant height, plant stand, tiller population density, pasture utilization time, total forage production, plant lodging and material proportion dead. These variables were higher (P<0.05) for the pastures overseeded in R6 in 2019, with the exception of the plant stand, tiller density and plant lodging, with no difference in 2020 between sowing times. The pasture utilization time was higher (P<0.05) in the overseeded pastures in both agricultural years. There was no interaction (P<0.05) between seasons and types of pasture for the plant stand, tiller density and morphological separation. The plant stand was higher (P<0.05) for single pearl millet, while tiller density was higher for single sudangrass. The proportion of leaves was higher (P<0.05) in single crops, that of stalks in pastures of single sudangrass, and that of dead material was higher in pastures of sudangrass, regardless of whether in single cultivation or mixed with ryegrass. There was a significant interaction between months and sowing times for the rate of monthly forage accumulation, with greater (P<0.05) accumulation for the overhanging pastures, and greater accumulation in the months of March and April. The overseeding of pearl millet or sudangrass over the soybean crop makes it possible to anticipate the use of pastures, increasing the time of use of pastures and the production of forage. |
format |
Dissertação |
author |
Candiotto, Lucas |
author_sort |
Candiotto, Lucas |
title |
Características de pastos de milheto ou capim sudão sobressemeados na cultura da soja |
title_short |
Características de pastos de milheto ou capim sudão sobressemeados na cultura da soja |
title_full |
Características de pastos de milheto ou capim sudão sobressemeados na cultura da soja |
title_fullStr |
Características de pastos de milheto ou capim sudão sobressemeados na cultura da soja |
title_full_unstemmed |
Características de pastos de milheto ou capim sudão sobressemeados na cultura da soja |
title_sort |
características de pastos de milheto ou capim sudão sobressemeados na cultura da soja |
publisher |
Universidade Tecnológica Federal do Paraná |
publishDate |
2021 |
citation |
CANDIOTTO, Lucas. Características de pastos de milheto ou capim sudão sobressemeados na cultura da soja. 2021. Dissertação (Mestrado em Agronomia) - Universidade Tecnológica Federal do Paraná, Pato Branco, 2021. |
url |
http://repositorio.utfpr.edu.br/jspui/handle/1/25348 |
_version_ |
1805323218654855168 |
score |
10,814766 |