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...
Na minha lista:
| Autor principal: | |
|---|---|
| Outros Autores: | |
| Formato: | bachelorThesis |
| Idioma: | pt_BR |
| Publicado em: |
Universidade Federal do Rio Grande do Norte
|
| Assuntos: | |
| Endereço do item: | https://repositorio.ufrn.br/handle/123456789/53702 |
| Tags: |
Adicionar Tag
Sem tags, seja o primeiro a adicionar uma tag!
|
| Resumo: | 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. |
|---|