Interferência alelopática de extratos de plantas de cobertura sobre a germinação de plantas daninhas
The rampant and incorrect utilization of herbicides has been causing problems such as the resistance of weeds and environmental pollution. In order to reduce the damage caused by the excessive use of agrochemicals, the scientific community is in search of alternative ways of control which will cause...
| Autor principal: | Círico, Carlos Antonio |
|---|---|
| Formato: | Trabalho de Conclusão de Curso (Graduação) |
| Idioma: | Português |
| Publicado em: |
Agronomia
2022
|
| Assuntos: | |
| Acesso em linha: |
http://repositorio.utfpr.edu.br/jspui/handle/1/29651 |
| Tags: |
Adicionar Tag
Sem tags, seja o primeiro a adicionar uma tag!
|
| id |
riut-1-29651 |
|---|---|
| recordtype |
dspace |
| spelling |
riut-1-296512022-09-20T06:07:22Z Interferência alelopática de extratos de plantas de cobertura sobre a germinação de plantas daninhas Allelophatic interference of plant extracts of cover plants on the germination of weed Círico, Carlos Antonio Moraes, Pedro Valério Dutra de Adami, Paulo Fernando Prestes Junior, Joanilson Vieira Moraes, Pedro Valério Dutra de Alelopatia Ervas daninhas Germinação Allelopathy Weeds Germination CNPQ::CIENCIAS AGRARIAS::AGRONOMIA The rampant and incorrect utilization of herbicides has been causing problems such as the resistance of weeds and environmental pollution. In order to reduce the damage caused by the excessive use of agrochemicals, the scientific community is in search of alternative ways of control which will cause less environmental impact. The adoption of practices such as crop rotation has been proving to be an efficient technique for the control of plagues, diseases and weeds, among other benefits. The use of cover crops not only enables the cultivation system through the maintenance of the soil, nutrient cycling and the use of green manuring but it can also be an alternative for controlling invasive plants. While on the vegetative phase, cover crops compete with weeds which may often hinders their stabilization. The dead vegetation cover offers a layer of straw to the soil which prevents or hampers the gemination of weeds, be it by creating a physical barrier of straw or by the allelophaty caused by the chemical substances released by the cover crops. Thus, the objective of the present paper was to evaluate which is the allelophatic interference of aqueous vegetable extracts of the following cover crops: Avena strigosa Schreb, Cichorium intybus L, Chenopodium quinoa Willd and Fagopyrum esculentum Moench, which where used over the following weeds: Amaranthus spp, Bidens pilosa, Raphanus raphanistrum e Digitaria insularis. The seeds were sown in germination boxes, each box was layered with three germitest (special tissues for seed germination) and posteriorly moistened with the extracts at the concentration of 10% (100g/1 liter of distilled H20), the witnesses were moistened with distilled water. The boxes were stored in BOD a +25 °C, with a 12-hour photoperiod of light/darkness and the evaluation was conducted every 24 hours for seven days from the beginning of germination. The analysed variables were the percentage of plants which germinated (G), the speed index of germination (IVG), the length of the seedlings (CP), green matter (MV) and dry matter (MS). The results obtained led to the conclusion that all extracts do cause interference in the germination and the development of the weeds studied. Digitaria insularis showed great susceptibility to all extracts. Raphanus raphanistrum was the weed that had less interference from the extracts, but it differed statistically from the control. Treatment with Cichorium intybus L extract completely inhibited the germination of Amaranthus spp and Bidens pilosa, and treatment with Chenopodium quinoa Willd completely inhibited the germination of Amaranthus spp, Bidens pilosa and Digitaria insularis. A utilização excessiva e incorreta dos herbicidas vem ocasionando problemas como a resistência de plantas daninhas e a poluição ambiental. Afim de reduzir os danos causados pelo uso excessivo dos agroquímicos, a comunidade científica busca encontrar controles alternativos, que causem menores impactos ambientais. A adoção de práticas como a rotação de culturas, vem se mostrando uma técnica eficiente para o controle de pragas, doenças e plantas daninhas, entre outros benefícios. A utilização de plantas de cobertura, além de viabilizar o sistema de cultivo através da manutenção da cobertura do solo, ciclagem de nutrientes, adubação verde, pode ser uma alternativa para o controle de plantas invasoras. Enquanto estão vegetando, as plantas de cobertura competem com as plantas daninhas, dificultando seu estabelecimento. A cobertura vegetal morta, fornece uma camada de palha ao solo, a qual impede ou dificulta a germinação das plantas daninhas, seja através da barreira física causada pela palhada ou pela alelopatia causada por substâncias químicas liberadas pelas plantas de cobertura. Desta forma, o presente trabalho teve como objetivo avaliar qual é a interferência alelopática de extratos vegetais aquosos de plantas de cobertura: Avena strigosa Schreb, Cichorium intybus L, Chenopodium quinoa Willd e Fagopyrum esculentum Moench, sobre as plantas daninhas: Amaranthus spp, Bidens pilosa, Raphanus raphanistrum e Digitaria insularis. As sementes foram semeadas em gerbox, três folhas de papel germitest foram colocadas em cada gerbox e posteriormente umedecidas com os extratos na concentração de 10% (100g/1 litro de H20 destilada), as testemunhas foram umedecidas com água destilada. Os gerbox foram armazenados em BOD a +25 °C, com fotoperíodo de 12 horas luz/escuro, e as avaliações foram realizadas a cada 24 horas até os sete dias após o início da germinação. As variáveis analisadas foram, a porcentagem de plantas germinadas (G), o índice de velocidade de germinação (IVG), o comprimento de plântulas (CP) a matéria verde (MV) e a matéria seca (MS). Os resultados obtidos permitiram concluir que todos os extratos causam interferências na germinação e no desenvolvimento das plantas daninhas estudadas. A Digitaria insularis mostrou grande suscetibilidade a todos os extratos. Já a Raphanus raphanistrum, foi a planta daninha que sofreu menor interferência dos extratos, porém diferiu estatisticamente da testemunha. O tratamento com extrato de Cichorium intybus Linibiu completamente a germinação de Amaranthus spp e Bidens pilosa, e o tratamento com Chenopodium quinoa Willd inibiu completamente a germinação de Amaranthus spp, Bidens pilosa e Digitaria insularis. 2022-09-19T16:42:13Z 2022-09-19T16:42:13Z 2018-12-03 bachelorThesis CIRICO, Carlos Antonio. Interferência alelopática de extratos de plantas de cobertura sobre a germinação de plantas daninhas. 2018. Trabalho de Conclusão de Curso (Bacharelado em Agronomia) - Universidade Tecnológica Federal do Paraná, Dois Vizinhos, 2018. http://repositorio.utfpr.edu.br/jspui/handle/1/29651 por openAccess application/pdf Agronomia Dois Vizinhos Brasil Universidade Tecnológica Federal do Paraná UTFPR |
| institution |
Universidade Tecnológica Federal do Paraná |
| collection |
RIUT |
| language |
Português |
| topic |
Alelopatia Ervas daninhas Germinação Allelopathy Weeds Germination CNPQ::CIENCIAS AGRARIAS::AGRONOMIA |
| spellingShingle |
Alelopatia Ervas daninhas Germinação Allelopathy Weeds Germination CNPQ::CIENCIAS AGRARIAS::AGRONOMIA Círico, Carlos Antonio Interferência alelopática de extratos de plantas de cobertura sobre a germinação de plantas daninhas |
| description |
The rampant and incorrect utilization of herbicides has been causing problems such as the resistance of weeds and environmental pollution. In order to reduce the damage caused by the excessive use of agrochemicals, the scientific community is in search of alternative ways of control which will cause less environmental impact. The adoption of practices such as crop rotation has been proving to be an efficient technique for the control of plagues, diseases and weeds, among other benefits. The use of cover crops not only enables the cultivation system through the maintenance of the soil, nutrient cycling and the use of green manuring but it can also be an alternative for controlling invasive plants. While on the vegetative phase, cover crops compete with weeds which may often hinders their stabilization. The dead vegetation cover offers a layer of straw to the soil which prevents or hampers the gemination of weeds, be it by creating a physical barrier of straw or by the allelophaty caused by the chemical substances released by the cover crops. Thus, the objective of the present paper was to evaluate which is the allelophatic interference of aqueous vegetable extracts of the following cover crops: Avena strigosa Schreb, Cichorium intybus L, Chenopodium quinoa Willd and Fagopyrum esculentum Moench, which where used over the following weeds: Amaranthus spp, Bidens pilosa, Raphanus raphanistrum e Digitaria insularis. The seeds were sown in germination boxes, each box was layered with three germitest (special tissues for seed germination) and posteriorly moistened with the extracts at the concentration of 10% (100g/1 liter of distilled H20), the witnesses were moistened with distilled water. The boxes were stored in BOD a +25 °C, with a 12-hour photoperiod of light/darkness and the evaluation was conducted every 24 hours for seven days from the beginning of germination. The analysed variables were the percentage of plants which germinated (G), the speed index of germination (IVG), the length of the seedlings (CP), green matter (MV) and dry matter (MS). The results obtained led to the conclusion that all extracts do cause interference in the germination and the development of the weeds studied. Digitaria insularis showed great susceptibility to all extracts. Raphanus raphanistrum was the weed that had less interference from the extracts, but it differed statistically from the control. Treatment with Cichorium intybus L extract completely inhibited the germination of Amaranthus spp and Bidens pilosa, and treatment with Chenopodium quinoa Willd completely inhibited the germination of Amaranthus spp, Bidens pilosa and Digitaria insularis. |
| format |
Trabalho de Conclusão de Curso (Graduação) |
| author |
Círico, Carlos Antonio |
| author_sort |
Círico, Carlos Antonio |
| title |
Interferência alelopática de extratos de plantas de cobertura sobre a germinação de plantas daninhas |
| title_short |
Interferência alelopática de extratos de plantas de cobertura sobre a germinação de plantas daninhas |
| title_full |
Interferência alelopática de extratos de plantas de cobertura sobre a germinação de plantas daninhas |
| title_fullStr |
Interferência alelopática de extratos de plantas de cobertura sobre a germinação de plantas daninhas |
| title_full_unstemmed |
Interferência alelopática de extratos de plantas de cobertura sobre a germinação de plantas daninhas |
| title_sort |
interferência alelopática de extratos de plantas de cobertura sobre a germinação de plantas daninhas |
| publisher |
Agronomia |
| publishDate |
2022 |
| citation |
CIRICO, Carlos Antonio. Interferência alelopática de extratos de plantas de cobertura sobre a germinação de plantas daninhas. 2018. Trabalho de Conclusão de Curso (Bacharelado em Agronomia) - Universidade Tecnológica Federal do Paraná, Dois Vizinhos, 2018. |
| url |
http://repositorio.utfpr.edu.br/jspui/handle/1/29651 |
| _version_ |
1805317116840116224 |
| score |
10,814766 |