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| GALON,L.; FORTE,C.T.; GABIATTI,R.L.; RADUNZ,L.L.; ASPIAZÚ,I.; KUJAWINSKI,R.; DAVID,F.A.; CASTOLDI,C.T.; PERIN,G.F.; RADUNZ,A.L.; ROSSETTI,J.. |
| ABSTRACT The aim of the study was to assess the interference and determine the economic threshold level of beggartick damage on bean crops. Treatments consisted of bean cultivars (IPR Uirapuru, BRS Supremo, BRS Campeiro, Fepagro 26, BRS Esplendor and IPR Tuiuiú) submitted to competition with ten beggartick populations. We evaluated plant population, leaf area, ground cover and shoot dry mass of beggartick. Dry mass of shoots of beggartick fitted better to the hyperbolic model, and grain yield losses due to beggartick interference were estimated satisfactorily by this model. BRS Esplendor and IPR Tuiuiú were more competitive than the others in the presence of beggartick. Sowing of BRS Esplendor, IPR Tuiuiú and Fepagro 26 increases the level of economic... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Phaseolus vulgaris; Bidens pilosa; Interference.. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582016000300411 |
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| GALON,L; FORTE,C.T.; GIACOMINI,J.P.; REICHERT Jr,F.W.; SCARIOT,M.A.; DAVID,F.A.; PERIN,G.F.. |
| ABSTRACT The objective of the study was to evaluate the competitive ability of summer crisp and butterhead lettuce types in coexistence with populations of ryegrass. The experimental design was completely randomized in a factorial 2 x 7 scheme, with four replications. On the A factor the lettuce types (summer crisp and butterhead) were allocated and, on B, the densities of ryegrass (0, 2, 4, 8, 16, 32 and 64 plants per pot). The number of leaves, chlorophyll content, leaf area, green mass and dry mass of the lettuce types and ryegrass were evaluated, and the diameter of the culture stem and the tiller number of the weed were determined. Differences in competitive ability between the lettuce types in competition with ryegrass were found, and butterhead was... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Interference; Lactuca sativa; Lolium multiflorum. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582016000200239 |
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