Fitossociologia de plantas daninhas em cultivo de beterraba
The infestation of agricultural crops by weeds causes serious damage to the producer and the crops, since these plants compete with the crops for water, light, nutrients and physical space, which can lead to a drop in productivity and quality. The objective of this work was to carry out a phytoso...
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Universidade Federal do Rio Grande do Norte
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Beta vulgaris L. Índice de Valor de Importância Comunidade infestante Importance Value Index Weed community CNPQ::CIENCIAS AGRARIAS::AGRONOMIA |
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Beta vulgaris L. Índice de Valor de Importância Comunidade infestante Importance Value Index Weed community CNPQ::CIENCIAS AGRARIAS::AGRONOMIA Costa, Edivan Bezerra Fitossociologia de plantas daninhas em cultivo de beterraba |
| description |
The infestation of agricultural crops by weeds causes serious damage to the producer
and the crops, since these plants compete with the crops for water, light, nutrients and
physical space, which can lead to a drop in productivity and quality. The objective of
this work was to carry out a phytosociological survey of weeds in beet cultivation,
cultivated in a direct seeding system in the garden of the Agricultural School of Jundiaí,
Macaíba - RN, in order to identify and quantify the weed species. In the survey, a metal
square with a side of 0.50 m and an area of 0.25 m² was used, randomly placed in the
experiment area, with data collected every seven days, over a period of 49 (forty-nine)
days and four repetitions. in each collection. The beet planting was carried out by
sowing and the experiment was understood throughout the critical period of the culture,
which is approximately six weeks and with data collection being carried out every seven
days, that is, (7, 14, 21, 28 , 35, 42, 49), making a total of twenty-eight collections over
a period of 49 days. Frequencies, density and dominance were evaluated; absolute and
relative, and the importance value index (IVI), which numerically expressed the
importance of the main species in the crop, being determined by means of the sum of
density, frequency and abundance values, expressed in percentages. Eleven species of
weeds infesting the sugar beet crop were identified, distributed in 11 genera and ten
families. The most representative family of the entire phytosociological survey, with
regard to the number of species, was Poaceae. The survey will enable preventive
planning to control existing weeds in the beet crop, helping the producer to reduce costs
and environmental impacts. |
| author2 |
Medeiros, Damiana Cleuma de |
| author_facet |
Medeiros, Damiana Cleuma de Costa, Edivan Bezerra |
| format |
bachelorThesis |
| author |
Costa, Edivan Bezerra |
| author_sort |
Costa, Edivan Bezerra |
| title |
Fitossociologia de plantas daninhas em cultivo de beterraba |
| title_short |
Fitossociologia de plantas daninhas em cultivo de beterraba |
| title_full |
Fitossociologia de plantas daninhas em cultivo de beterraba |
| title_fullStr |
Fitossociologia de plantas daninhas em cultivo de beterraba |
| title_full_unstemmed |
Fitossociologia de plantas daninhas em cultivo de beterraba |
| title_sort |
fitossociologia de plantas daninhas em cultivo de beterraba |
| publisher |
Universidade Federal do Rio Grande do Norte |
| publishDate |
2023 |
| url |
https://repositorio.ufrn.br/handle/123456789/53702 |
| work_keys_str_mv |
AT costaedivanbezerra fitossociologiadeplantasdaninhasemcultivodebeterraba |
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1773966540341772288 |
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ri-123456789-537022023-07-19T11:37:51Z Fitossociologia de plantas daninhas em cultivo de beterraba Costa, Edivan Bezerra Medeiros, Damiana Cleuma de Lira, Vanda Maria Borges, Maiara Pinheiro da Silva Beta vulgaris L. Índice de Valor de Importância Comunidade infestante Importance Value Index Weed community CNPQ::CIENCIAS AGRARIAS::AGRONOMIA The infestation of agricultural crops by weeds causes serious damage to the producer and the crops, since these plants compete with the crops for water, light, nutrients and physical space, which can lead to a drop in productivity and quality. The objective of this work was to carry out a phytosociological survey of weeds in beet cultivation, cultivated in a direct seeding system in the garden of the Agricultural School of Jundiaí, Macaíba - RN, in order to identify and quantify the weed species. In the survey, a metal square with a side of 0.50 m and an area of 0.25 m² was used, randomly placed in the experiment area, with data collected every seven days, over a period of 49 (forty-nine) days and four repetitions. in each collection. The beet planting was carried out by sowing and the experiment was understood throughout the critical period of the culture, which is approximately six weeks and with data collection being carried out every seven days, that is, (7, 14, 21, 28 , 35, 42, 49), making a total of twenty-eight collections over a period of 49 days. Frequencies, density and dominance were evaluated; absolute and relative, and the importance value index (IVI), which numerically expressed the importance of the main species in the crop, being determined by means of the sum of density, frequency and abundance values, expressed in percentages. Eleven species of weeds infesting the sugar beet crop were identified, distributed in 11 genera and ten families. The most representative family of the entire phytosociological survey, with regard to the number of species, was Poaceae. The survey will enable preventive planning to control existing weeds in the beet crop, helping the producer to reduce costs and environmental impacts. A infestação das culturas agrícolas por plantas daninhas causa sérios prejuízos ao produtor e as culturas, uma vez que essas plantas concorrem com as culturas por água, luz, nutrientes e espaço físico, podendo desta forma ocorrer queda na produtividade e na qualidade. O objetivo desse trabalho foi realizar um levantamento fitossociológico de plantas daninhas em cultivo de beterraba, cultivada em sistema de semeadura direta na horta da Escola Agrícola de Jundiaí, Macaíba - RN, com fins de identificar e quantificar as espécies infestantes. No levantamento foi utilizado um quadrado metálico com 0,50 m de lado e área de 0,25 m², lançado aleatoriamente na área do experimento, com dados coletados a cada sete dias, num período de 49 (quarenta e nove) dias e quatro repetições em cada coleta. O plantio da beterraba se deu por semeadura e o experimento se entendeu durante todo o período crítico da cultura, que é de aproximadamente seis semanas e com coleta de dados sendo realizadas a cada sete dias, ou seja, (7, 14, 21, 28, 35, 42, 49), perfazendo um total de vinte e oito coletas em um período de 49 dias. Foram avaliadas as frequências, densidade e dominâncias; absolutas e relativas, e o índice de valor de importância (IVI), no qual expressou, numericamente, a importância das principais espécies na cultura, sendo determinado por meio da soma de valores de densidade, frequência e abundâncias, expressados em porcentagens. Foram identificadas 11 espécies de plantas daninhas infestando a cultura da beterraba, distribuídas em 11 gêneros e dez famílias. A família mais representativa de todo o levantamento fitossociológico, no que se refere a número de espécies, foi a Poaceae. O levantamento possibilitará o planejamento preventivo para o controle das plantas daninhas existentes na cultura da beterraba, ajudando o produtor a reduzir custos e os impactos ambientais. 2023-07-19T11:37:50Z 2023-07-19T11:37:50Z 2023-07-03 bachelorThesis COSTA, Edivan Bezerra. Fitossociologia de plantas daninhas em cultivo de beterraba. 2023. 31f. Trabalho de Conclusão de Curso (Graduação em Engenharia Agronômica) - Unidade Acadêmica Especializada em Ciências Agrárias, Universidade Federal do Rio Grande do Norte, Macaíba, 2023. https://repositorio.ufrn.br/handle/123456789/53702 pt_BR application/pdf Universidade Federal do Rio Grande do Norte Brasil UFRN Engenharia Agronômica Unidade Acadêmica Especializada em Ciências Agrárias |