A5005457811- Weed Control and Herbicide Applications
- Pesticide and Herbicide Environmental Studies
- Agronomic Practices and Intercropping Systems
- Plant tissue culture and regeneration
- Turfgrass Adaptation and Management
- Botany and Plant Ecology Studies
- Allelopathy and phytotoxic interactions
- Soil Management and Crop Yield
- Plant and fungal interactions
- Plant Physiology and Cultivation Studies
- Legume Nitrogen Fixing Symbiosis
- Soybean genetics and cultivation
- Agricultural Science and Fertilization
- Growth and nutrition in plants
- Water management and technologies
- Plant responses to water stress
- Horticultural and Viticultural Research
- Postharvest Quality and Shelf Life Management
- Potato Plant Research
- Phytochemicals and Antioxidant Activities
- Plant Taxonomy and Phylogenetics
- Agriculture, Plant Science, Crop Management
- Yeasts and Rust Fungi Studies
- Phytochemical and Pharmacological Studies
- Plant Disease Resistance and Genetics
Universidade Federal de Pelotas
2017-2023
Universidade Federal da Fronteira Sul
2015
Justus-Liebig-Universität Gießen
1982
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 persistence of seeds subjected to burial depths over time. Experiments were carried out field for two years randomized block experimental design four repetitions. Dormant harvested from mother-plants put nylon bags containing soil. Previously, viability was 1 %...
ABSTRACT: Ryegrass is an important weed in wheat cultivations due to the evolution of resistance different mechanisms action. This study aimed compare phenological development, fitness cost, and competitive ability between ryegrass biotypes susceptible with multiple 5-enolpyruvylshikimate-3-phosphate synthase (EPSPs) acetolactate (ALS) inhibiting herbicides. Fitness cost development were evaluated from grown pots, morphological growth variables determined up 140 days after emergence....
Introduction A. hybridus interference in soybeans varies with population size and may be quantified by mathematical models that allow establishing the threshold levels. Objective Determine of escaped from an herbicide program multiple resistance to EPSPs ALS-inhibiting herbicides on soybean yield its economic (ET). Methods Two experiments were conducted a randomized block design. The treatments consisted populations ranging 0 41 plants m-2 (2018/19) [...]
As principais plantas daninhas encontradas na cultura do trigo são o nabo e azevém, seu controle em pós-emergência é baseado herbicidas inibidores da enzima acetolactato sintase (ALS) acetil coenzima A carboxilase (ACCase) que, função resistência, limita as opções de controle. Associações têm sido utilizadas trigo, porém, seus efeitos pouco conhecidos. O objetivo deste trabalho foi avaliar a seletividade associações doses aplicados trigo. Foram realizados três experimentos campo sistema...
Abstract Italian ryegrass ( Lolium perenne spp. multiflorum Lam.) is a troublesome weed commonly found in winter cereals. Winter cover crops represent an alternative for suppression, reducing soil seed banks, and future infestations. The aim of this study was to evaluate the suppression on bank infestations fields managed under no‐tillage system. Field experiment carried out during three consecutive years, strip‐plot design with four blocks, containing crops. Wheat Triticum aestivum ),...
O uso intensivo e repetido do método químico de controle na cultura trigo selecionou populações nabo (Raphanus raphanistrum R. sativus) azevém (Lolium multiflorum) resistentes a alguns herbicidas, em especial aos inibidores das enzimas ALS, ACCase EPSPs. Para manejar as plantas daninhas resistentes, é importante rotacionar os mecanismos ação tanto dessecação como nas aplicações realizadas após implantação da cultura. Assim, objetivou-se com este trabalho avaliar eficácia herbicida clomazone...
Italian ryegrass (Lolium multiflorum Lam.) is a grass weed found in winter cereals, with several glyphosate-resistant diploid populations. Furthermore, the use of tetraploid genotypes creates an opportunity to increase forage demand replacement The aim this research was evaluate crossing capacity between and transfer glyphosate resistance next generation. Reciprocal crosses were performed using susceptible cultivar INIA Titan resistant (SVA04 biotype) plants obtain F1 progeny. Germination...
Barnyard grass (Echinochloa sp.) is one of the main rice weeds. Knowledge its emergence can support management measures. The present study models barnyard at different flooded sowing periods. Furthermore, effectiveness hydrothermal time model in estimating analyzed. Field was monitored three times a week during two (October and November) growing seasons (2017/18 2018/19), sown unsown areas. Data were converted to cumulative based on total seedlings. Soil temperature moisture data used...
A liberação comercial da soja Roundup Ready® favoreceu o manejo de plantas daninhas e possibilitou cultivo RR® a aplicação do glyphosate em pós-emergência cultura. No entanto, uso intensivo deste herbicida selecionou biótipos buva resistentes dificultou controle. Muitos trabalhos avaliam eficiência técnica herbicidas, porém, na maioria das vezes, retorno econômico não é analisado tomada decisão sobre escolha dos herbicidas serem aplicados. O objetivo trabalho foi avaliar associações doses no...
ABSTRACT: The intergenotypic competition of tetraploid ryegrass with natural diploid population may be a tool to reduce the frequency resistant individuals in an area. This study aimed identify and compare phenological development, fitness cost, competitive ability between genotypes. Genotypes were grown pots, morphological variables genotype growth assessed every 15 days up 120 after emergence evaluate cost. Phenological development seed yield components measured single time together...
Na atualidade torna-se importante testar novas alternativas de moléculas herbicidas, mesmo que não sejam registradas para o controle plantas daninhas infestantes do trigo, avaliar a fitotoxicidade à cultura e possibilidade manejar resistentes aos produtos utilizados esse fim. Diante disso, um experimento foi realizado herbicida clomazone associado ou ao safener dietholate aplicados trigo. O em delineamento inteiramente casualizado, arranjado esquema fatorial (5 x 4) + 2 2, com quatro...
Abstract In Gefäßversuchen mit Winterweizen wurde bei 2 N‐Stufen der Einfluß einer einmaligen Spritzung von CCC, Ancymidol bzw. eines Gemisches beider Wachstumsregulatoren auf die morphologischen Eigenschaften, den Chlorophyllgehalt und Verlauf des Chlorophyllabbaus im Fahnenblatt nach Blüte untersucht. Die Fläche Fahnenblattspreite Anzahl Fahnenblätter je Gefäß wurden sowohl durch als auch höhere N‐Düngung vergrößert, woraus eine größere Fahnenblattspreiten pro resultierte. höchsten Werte...
No monocultivo de arroz, as espécies daninhas mais adaptadas a este sistema produção aparecem em maior incidência na área. A rotação culturas pode ser uma alternativa para auxiliar redução do banco sementes plantas daninhas. Nesse sentido o objetivo trabalho foi avaliar dinâmica capim-arroz (Echinochloa spp.) e papuã (Urochloa plantaginea) terras baixas, combinações manejo solo. Foram utilizadas soja sorgo, sob preparo solo convencional semeadura direta, cultivado faixas. Foi avaliado após...
O nabo (Raphanus raphanistrum) é uma planta daninha que interfere na produtividade final do trigo. uso repetido de herbicidas inibidores da enzima ALS favoreceram a seleção biótipos resistentes, tornando necessário o alternativos. objetivo trabalho foi avaliar controle e seletividade ao trigo sob diferentes doses saflufenacil bentazona, outros comum nesta cultura. estudo realizado em casa vegetação delineamento inteiramente casualizado com quatro repetições. Os tratamentos (0; 8,5; 17; 35 70...
Resistance to acetolactate synthase (ALS) inhibitors have increased recently in South Brazil where the major weeds of flooded rice (barnyardgrass and weedy rice) evolved resistance imazapyr+imazapic. The aim this research was evaluate a growth medium for tissue regeneration tillers barnyardgrass, as well an agar-based bioassays test (also from tillers) detect susceptible resistant biotypes barnyardgrass imazapyr+imazapic vitro. Greenhouse experiments were conducted ALS-resistant (R) (S)...
ABSTRACT: The commercialization of ryegrass seeds with the presence resistant biotypes is a serious issue that increses dispersion resistance to new areas without this problem. Therefore, study aimed develop quick test detect susceptible and glyphosate herbicide in order identify contaminated seed lots resistance. Three experiments were carried out, one greenhouse other two laboratory. First, factor (RF) was determined by dose-response curve experiment suspected be glyphosate. Then,...