Fellipe Machado

CentroAgro Pesquisa no Cerrado · Pesquisa e Desenvolvimento

Compacted soils may be negatively affecting the selectivity of herbicides applied in preemergence in the soybean crop. Therefore, the present work aimed to investigate possible negative effects on the morphophysiological characters of soybean plants, as well as on the agronomic and yield performances of this crop. For this purpose, two trials were...

Rice is commonly used in degraded pasture area renovation. In this process, the rice is set up simultaneously with the forage plants, which increases the difficulty to control post-emerged weeds. Thus, this study aimed to evaluate rice crop development intercropped with Urochloa under the herbicides pendimethalin and trifluralin application. The ex...

A very limited amount of information is available in relation both to the residual effect of herbicides destinated to the destruction of cotton stalks and to the time interval required to prevent that development and yield of the following crop be affected. This work aimed to identify the residual activity of herbicides intended to eliminate cotton...

No-till (NT) farming is a major soil conservation strategy. In the Brazilian Cerrado, soybean is the main grain crop, and strategies that improve the cultivation of cover crops in the off-season in succession to soybean could facilitate NT for large cultivated areas. In the municipality of Nova Xavantina, MT, Brazil, three experiments were carried...

No-till (NT) farming is a major soil conservation strategy. In the Brazilian Cerrado, soybean is the main grain crop, and strategies that improve the cultivation of cover crops in the off-season in succession to soybean could facilitate NT for large cultivated areas. In the unicipality of Nova Xavantina, MT, Brazil, three experiments were carried...

Em parte da região Centro-Oeste do Brasil o algodoeiro tem sido cultivado em segundasafra, semeado após a colheita de soja. Nestas áreas, tem sido comum a ocorrência deplantas voluntárias de soja interferindo no desenvolvimento do algodoeiro. Neste sentido, oobjetivo deste trabalho foi avaliar a eficácia de herbicidas aplicados em pós-emergência no...

Background: Information on the carryover of herbicides applied to the destruction of cotton stalks, as well as the withdrawal period necessary to prevent the development and productivity of the crop in succession from being affected are limited in the literature. Objective: The objective was to identify the carryover effect promoted by herbicides...

Para assegurar a produtividade e qualidade do milho pipoca é fundamental evitar a interferência das plantas daninhas. Para isto, é necessário utilizar herbicidas que, além de proporcionarem bom controle, sejam seletivos à cultura.O objetivo do trabalho foi avaliar a seletividade de associações herbicidas para a cultura do milho pipoca em diferentes...

Capim-amargoso e milho voluntário destacam-se como as principais espécies invasoras no cultivo da soja ocasionando perdas de produtividade devido a matocompetição. Este trabalho teve como objetivo estudar herbicidas pré-emergentes para o controle do capim-amargoso (Digitaria insularis) e do milho voluntário. Para tanto, foi realizado experimento em...

The destruction of cotton stalks after harvesting is a prophylactic measure aimed at reducing the population of insects and disease inoculants that may remain in the crop residues and remaining cotton plants. The objective of this work was to evaluate integrated methods of management of the cotton stalks, combining mechanical and chemical control,...

Glyphosate has been widely used to control greater beggarticks populations that are resistant to acetolactate synthase (ALS) inhibitors in South America. However, herbicide control failures has been observed over the last three growing seasons in grain production areas of Paraguay. In this research, we report the first case of multiple resistance t...

A semeadura do sorgo adensado pode influenciar no manejo cultural de plantas daninhas e desempenho produtivo da cultura. Sendo assim, o objetivo deste trabalho foi avaliar a influência do adensamento na semeadura do sorgo sobre o desenvolvimento agronômico da cultura e supressão de plantas daninhas. O experimento foi conduzido a campo no delineamen...

The weed resistance to herbicides has generated the need to adopt different management strategies, listing the tank mixture applications and use of herbicides in different modalities. In this context, it is essential to evaluate the selectivity of these herbicides associations for the crop in which the positioning is performed, as well as the effec...

Products with physiological effects on plants to optimize agricultural production is increasingly used; they can change the development of plants and the chemical characteristics of seeds. The objective of this work was to evaluate the development of soybean cultivars and the protein and oil contents of soybean grains after treatment with pyraclost...

Abstract - To increase the weed control spectrum in corn, the herbicides formulation with active principles of different mechanisms of action is an important alternative. With the objective of evaluating the control promoted by the new herbicide Calaris ® , composed by the mixture of [atrazine + mesotrione] applied in postemergence of weeds, alone...

The combination of pre-and post-emergence herbicides may affect their selectivity to soybean plants, especially to short-cycle cultivars. The objective of this work was to evaluate the selectivity of pre-and post-emergence herbicides to very-early maturing soybean cultivars. Two field experiments were conducted, one in Mandaguaçu, Paraná (E1) and o...

Com a inserção da crotalária como planta antagonista em áreas com histórico de infestação de fitonematoides, a ocorrência de plantas voluntárias desta espécie passou a ser comum, tornando-se necessária a adoção de medidas para o seu manejo. Assim, o presente trabalho teve por objetivo avaliar alternativas herbicidas aplicadas em diferentes modalida...

p>A espécie Murdannia nudiflora pertence à família Commelinaceae é conhecida como “trapoerabinha”. Devido à elevada capacidade competitiva e por apresentar tolerância ao glyphosate esta espécie se desenvolve e compete com a soja, apresenta rápido crescimento quando ocorre a senescência das folhas de soja e dificulta o manejo das plantas daninhas no...

Chemical weed control in sorghum crop is limited by the low quantity of herbicides registered for the crop. Studies on the effects and effectiveness of herbicides in sorghum crop are essential to increase alternatives for the control of weeds. In this context, the present study was to evaluate the effect of intoxication caused by herbicides in sorg...