Atividade alelopática de capim-amargoso (Digitaria insularis (L.) Mez ex Ekman) sobre a germinação e o desenvolvimento inicial de plântulas de milho, sorgo e trigo
Among the concerns of current agriculture, the damage caused by weeds to various crops is highlighted. Weeds can allelopathically interfere with cultivated plants through the release of allelochemicals which inhibit seed germination and plant development. In this context, the objective of the presen...
| Autor principal: | Nava, Rafael Henrique |
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| Formato: | Trabalho de Conclusão de Curso (Graduação) |
| Idioma: | Português |
| Publicado em: |
Agronomia
2022
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| Assuntos: | |
| Acesso em linha: |
http://repositorio.utfpr.edu.br/jspui/handle/1/29254 |
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| Resumo: |
Among the concerns of current agriculture, the damage caused by weeds to various crops is highlighted. Weeds can allelopathically interfere with cultivated plants through the release of allelochemicals which inhibit seed germination and plant development. In this context, the objective of the present work was to evaluate the allelopathic effect of bittergrass on the germination and development of maize, sorghum and wheat seedlings. The effect of the aqueous solution of bittergrass (10% v/v) on seed germination, shoot and root length, dry mass and green mass of maize, sorghum and seedlings (shoot and root) was evaluated. wheat. The experimental design used was completely randomized, with four replications per treatment. Data were submitted to the Lilliefors normality test. Once the assumptions of the model were met, the analysis of variance (p≤0.05) was performed toverify the level of significance of the treatments. When significant, the T test was performed (p≤0.05). The analysis of variance on the variables analyzed for the corn crop shows a significant allelopathic effect of bittergrass on the variables shoot length, root length, shoot and root fresh weight, shoot and root dry weight. On the variables analyzed in sorghum, the extract significantly influenced the variables shoot length and root length. For wheat, the extract had an allelopathic effect on germination and root length. Through the results obtained under laboratory conditions, it is concluded that the bittergrass has an allelopathic effect on corn, sorghum and wheat crops, with corn being the most affected crop in the initial development. |
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