Year: 2019
Type: article
Abstract: The objective of this study was to evaluate the expression of seeds vigor and physiological performance of initial growth of red clover plants under the influence of fungicide doses of carboxin + thiram.Three lots of seeds were used (high; medium and low vigor) treated with 0; 150; 250 fungicide doses and 350 mL i.a./100 kg of seeds.Germination, first count, emergence, speed index of seedling emergence, length and dry matter of shoot and root, leaf area and shoot/root ratio were evaluated.The experimental design was completely randomized in a factorial 3 x 4 (three lots -high, medium and low vigor x four fungicide doses of carboxin + thiram).Data were submitted to analysis of variance and if significant at 5% probability, adjusted for orthogonal polynomials.It was possible to observe that there were significant differences for the means of the variables germination, first germination count, emergency, emergency speed index, shoot length, root length, aerial part dry mass, root dry mass, leaf area, leaf area ratio and shoot and root ratio.The fungicide doses of 150 to 350 mL i.a./100 kg of seeds result in greater seedling emergence, higher leaf area ratio and increased shoot/root ratio in plants from lots of medium vigor seeds.The fungicide consisted of carboxin + thiram enhances the expression of seed vigor and physiological performance of seedlings growth derived from lots of medium vigor seeds.
Source: Colloquium Agrariae
Institutions: Universidade Federal de Pelotas, Universidade de São Paulo
Language: English
Subfield: Plant Science
Domain: Life Sciences
SDG: Zero hunger
Open Access status: diamond
OpenAlex ID: W2944646129