54 documents found, page 1 of 6
Enlist volunteer corn affects the crop development and seed quality of Enlist s...
Mazon,Alcimar Spindola; Cechin,Joanei; Piasecki,Cristiano; Gazola,Juliano; Henckes,Jonas Rodrigo; Meneghello,Geri; Agostinetto,DirceuABSTRACT EnlistTM technology is a new trait on soybean and corn conferring tolerance to auxinic-type (2,4-D choline) and graminicides (aryloxyphenoxypropionates – FOPs) herbicides. However, the occurrence of volunteer corn tolerant to 2,4-D and FOPs can become a significant weed on soybean cropping systems, affecting the crop yield and reducing seed quality. This research aimed to evaluate herbicides to EnlistT...
Differences in biochemical, physiological and molecular response mechanisms of ...
Agostinetto,Dirceu; Oliveira,Cláudia; Langaro,Ana Claudia; Silva,Jéssica Dias Gomes da; Barbieri,Geovana FaccoABSTRACT The drought stress tolerance may differ among species and cultivars. The drought effect on plants depends on the impact on the plant’s physiological, biochemical and molecular processes, as well as on its ability to adapt under these conditions. This study aimed to evaluate the physiological and biochemical responses, and determine the expression of the genes OsAPX2, OsHSP24.15, OsHSP71.10 and OsHSP85....
Relative competition between white clover and weed species Silene gallica
Rockenbach,Dalvane; Balbinot,Andrisa; Bastiani,Marlon Ouriques; Caratti,Fernanda Cassiane; Agostinetto,Dirceu; Lamego,FabianeABSTRACT The aim of the present study was to assess the relative competition between white clover (cv. BRS URS Entrevero) and weed species Silene gallica L. through replacement series. The experiments followed a completely randomized design with four replications. The first study showed that the shoot dry mass of both species (white clover and S. gallica) became constant with 16 plants.pot-1 or 400 plants.m-2. ...
Burial depths favor Italian ryegrass persistence in the soil seed bank
Cechin,Joanei; Schmitz,Maicon Fernando; Hencks,Jonas Rodrigo; Vargas,Andres Antonio Monge; Agostinetto,Dirceu; Vargas,LeandroABSTRACT: Italian ryegrass (Lolium multiflorum Lam.) is a weed broadly found in fields cultivated with wheat and barley crops. Seed inputs into the soil before harvesting winter crops increase seed bank, ensuring survival. This study evaluated the persistence of Italian ryegrass seeds subjected to burial depths over time. Experiments were carried out in the field for two years in randomized block experimental d...
Effect of high temperature and recovery from stress on crop–weed interaction
Ruchel,Queli; Zandoná,Renan Ricardo; Fraga,Diego Severo; Agostinetto,Dirceu; Langaro,Ana ClaudiaABSTRACT Biotic and abiotic stresses, either individually or in combination, may affect soybean growth and development negatively, besides competitiveness with weeds. This study aimed at evaluating the effect of heat stress and plant recovery on crop–weed interaction by analyzing growth variables. Experiments were set up as replacement series of soybean with slender amaranth. Treatments followed a factorial sch...
May the crossing between diploid and tetraploid Italian ryegrass transfer glyph...
Schmitz,Maicon Fernando; Cechin,Joanei; Vargas,Andrés Antonio Monge; Henckes,Jonas Rodrigo; Vargas,Leandro; Agostinetto,DirceuABSTRACT Italian ryegrass (Lolium multiflorum Lam.) is a grass weed found in winter cereals, with several glyphosate-resistant diploid populations. Furthermore, the use of Italian ryegrass tetraploid genotypes creates an opportunity to increase the forage demand in replacement of diploid populations. The aim of this research was to evaluate the crossing capacity between glyphosate-resistant diploid and tetraplo...
Control of Italian ryegrass and Alexandergrass in corn using different corn sow...
Piasecki,Cristiano; Ovejero,Ramiro Fernando Lopez; Picoli Junior,Gilmar José; Francisco Bellini,Luiz; Agostinetto,Dirceu; Vargas,LeandroABSTRACT Glyphosate-resistant (GR) Italian ryegrass (LOLMU) and Alexandergrass (URPLA) are troublesome weeds in corn cropping systems in Southern Brazil. The emergence pattern of those weeds is not uniform and may change according to the season’s environmental characteristics. Also, herbicide resistance has been diminishing the success of the weed control programs. The objectives of this study were to evaluate ...
Selectivity of post-emergent herbicides for weed control in birdsfoot trefoil c...
M. Silva,Bruno; R. Zandoná,Renan; C. A. Neto,Roberto; Torchelsen,Jonathan; Agostinetto,DirceuAbstract Background: Competition with weeds and the lack of selective herbicides registered for birdsfoot trefoil crops affect their development and limit their productivity. Objective: This study aimed to evaluate selectivity of post-emergent herbicides for weed control in birdsfoot trefoil crops. Methods: Experiments were carried out in a greenhouse and on a field, in both vegetative and reproductive developm...
Herbicidal activity of kidney leaf mud plantain leaves extracts on the germinat...
T. Perboni,Laís; Agostinetto,Dirceu; Gazola,Juliano; Tessaro,Daniela; M. Teixeira,Marlon; Neutzling,AlessandroAbstract Background: Plants synthesize compounds of specialized metabolism to defend themselves against biotic and abiotic stresses. These compounds could be used as models for pesticide development. Among the species that have not yet been studied for the potential to produce active compounds is the kidney leaf mud plantain (Heteranthera reniformis). Objective: The goal was to evaluate the effect of hexanic, e...
Resistance detection of blackjack to ALS inhibitors by in vitro plant growth me...
Tessaro,Daniela; Benneman,Daiane; T. Perboni,Lais; R. Garcia,Jéssica; M. Teixeira,Marlon; Agostinetto,DirceuAbstract Background: The resistance of weeds to herbicides is a problem that has been increasingly studied because of its great importance in agriculture and rapid growth of this phenomenon worldwide. The quick detection of resistant plants is extremely important for resistance management. Weed resistance to herbicides can be detected through field, greenhouse and laboratory tests. A fast way of detecting resis...