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Publications
Publications (56)
Almost all pineapple crops in Brazil are grown using the cultivar Perola. This scenario can be changed through the development of new cultivars with better fruit quality and resistance. The novel approach of the present study was to select pineapple clones that combine both resistance to fusariosis and characteristics related to plant and fruit qua...
Destruction of the harvest of cotton stalks should be done after it. However, destruction by ploughing prevents continuing with direct sowing, which makes chemical management an ally in soil conservation. The objective was to identify the most effective dose of 2,4-D, associated with different herbicides and the timing of administration for the con...
O nematoide das lesões radiculares tem causado danos econômicos crescentes nas culturas de explorações agropecuárias no Brasil, especialmente na região Centro-Oeste. Objetivou-se neste trabalho conhecer a distribuição do nematoide das lesões radiculares, Pratylenchus spp., no Estado de Mato Grosso, possibilitando conhecer as localidades com maior c...
Among the major diseases that affect the genus Heliconia, anthracnose (Colletotrichum sp.) is highlighted for interfering in the production, development and quality of flowers. As a management alternative, resistance induction using biotic and abiotic inducers has been adopted. Thus, the present study aimed to test resistance inducers on the contro...
Green manure stands out in the organic vegetable production as complementary fertilizer alternative to organic compound incorporation, contributing to reduce production costs and improve soil physical, chemical and biological features. The aim of the current study is to assess green manure and spontaneous vegetation species in cropping systems focu...
As propriedades físicas do solo exercem influencia no crescimento radicular das plantas, que dependendo do nível de restrição, a produtividade da cultura é reduzida. O objetivo deste estudo foi verificar os efeitos da adubação biológica e plantas de cobertura sobre as propriedades físicas do solo. O estudo foi desenvolvido em duas safras (2015/16 e...
Maize is an important crop for Brazil's economy. This species is, in general, grown as monoculture, making it necessary the use of conservationist practices for soil management and to favor crop development. The objective of this study was to evaluate the effects of biological fertilizer and cover plants on soil properties and maize yield. The expe...
Objetivou-se avaliar a influência de diferentes quantidades de cobertura de braquiária no comportamento diário da temperatura máxima, média e mínima e da amplitude térmica do solo, bem como nas características agronômicas da cultura do milho verde. O experimento seguiu o delineamento em blocos casualizados sendo composto por quatro tratamentos e qu...
The analyze of the El Niño, La Niña, and Neutral years phenomena and their influence on the temporal distribution of precipitation and air temperature is of great importance in agricultural systems, with the view to adapt crop management in order to reduce the risks of losses, optimizing rainwater and contributing to food security. The aim of this...
Several traits must be observed in the selection of sour passion fruit progenies. For such, selection indices could be used for gradually increasing the frequency of favorable genotypes for the set of the traits of interest. This study aimed to compare parametric and non-parametric selection indices to be used in the selection of passion fruit prog...
p>O Brasil é o maior produtor de maracujá azedo do mundo, porém a antracnose, doença causada
pelo fungo Colletotrichum gloeosporioides, vem causando muitas perdas na produção. O objetivo desse
estudo foi avaliar os índices de severidade e incidência da antracnose em famílias de irmãos completos
de maracujazeiro azedo e classificá-las de acordo com...
Passion fruit stands out as one of the most cultivated fruits in Brazil. As the culture expanded, an increase in phytosanitary problems was observed. Fungal diseases like scab are among phytosanitary problems. The aim of this study was to quantify scab intensity on leaves, and to estimate genetic parameters and selection gains to scab resistance in...
Com o aumento da população mundial surge a preocupação com o mau uso dos recursos naturais, como o principal a água, este é essencial para o consumo e para uso na agricultura. Portanto, urge a necessidade de se estudar as regiões onde são aptas a utilizar a água como fonte de irrigação para as culturas. O trabalho foi realizado no laboratório de Ag...
A cultura do algodão tem grande importância econômica e social para o Brasil, no entanto proporciona também impactos ambientais relevantes. Para mensurar esses impactos faz-se uso da dinâmica populacional de nematoides em agroecossistemas como indicador de qualidade de solos. Diante disso, o objetivo do trabalho foi caracterizar a comunidade de nem...
O objetivo deste estudo foi avaliar os efeitos da temperatura e meios de cultura no índice de velocidade de crescimento micelial, produção de conídios e morfologia do fungo Ramularia areola. O estudo foi conduzido em condições de laboratório, com delineamento inteiramente casualizado, tendo quatro temperaturas e sete meios de cultura. Após o prepar...
The objective of this work was to evaluate the agronomic performance and estimate the genetic divergence of 18 cotton genotypes grown in the main season (sowed in December, 2012) and off season (sowed in January, 2013), considering their agronomic characteristics and resistance to Ramularia leaf spot. A randomized block experimental design was used...
The objective of this work was to evaluate Fusarium guttiforme inoculation methods and genetic resistance of pineapple accessions. Thus, three experiments were conducted: pathogen inoculation of different leaf types (B, D and F) of pineapple (1), pathogen inoculation of pineapple cuttings and detached D leaves (2), and identification of resistance...
Cotton monoculture favors the development of diseases such as ramularia leaf spot, which causes early defoliation and boll rotting, thus decreasing yield. This study aimed at evaluating the severity of ramularia leaf spot and its effects on cotton leaf area and yield. The experiment was conducted in a triple (4 x 3 x 2) factorial design, consisting...
Resumo
Knowledge of the spatial variability of rainfall in the state of Mato Grosso is very important in decision making, especially in agriculture, aiming at proper planning and optimization of water resources to reduce environmental impacts and increase profitability. The spatial distribution of this variable through geostatistical methods has...
The ramularia leaf spot (RLS) disease causes cotton yield losses. Choosing a less susceptible cultivar and a sowing time that are less favorable to the pathogen contribute to the management of this disease. The objective of this work was to evaluate the severity of ramularia leaf spot on cotton cultivars sowed in two different times. The experiment...
O estudo foi realizado no Assentamento Vale do Sol I no município de Tangará da Serra/MT,
caracterizado como propriedade de agricultura familiar. A presente pesquisa de extensão rural teve como objetivo
realizar a identificação e o monitoramento de doenças na cultura da berinjela. Inicialmente foi realizada a coleta de
material vegetal na proprieda...
This paper aimed to evaluate the transmission of Fusarium oxysporum f. sp. vasinfectum (FOV) and the effects of this pathogen on the initial development of cotton plants following inoculation of seeds. Two cultivars (susceptible and resistant) and two strains (most and least aggressive) of the pathogen were used in this study. The inoculation metho...
The objective of this study is to identify the regions with aptitude for cultivation of peanuts (Arachis hypogea L.), establishing best sowing times in the state of Mato Grosso. Soil and climatic conditions of the region were observed respecting the cycle and the water requirements of the crop 90-120 days and 400-600 mm, respectively, for the types...
This study aimed to evaluate the in vitro behavior of the fungus Fusarium guttiform in different conditions of temperature and luminosity and determine the most efficient inoculation method for evaluating the resistance of pineapple to fusariosis. To determine the in vitro behavior, two experiments was performed, with the same design, conduction, a...
This study aimed to evaluate the in vitro behavior of the fungus Fusarium guttiform in different conditions of temperature and luminosity and determine the most efficient inoculation method for evaluating the resistance of pineapple to fusariosis. To determine the in vitro behavior, two experiments was performed, with the same design, conduction, a...
The use of DNA sequences analysis has been an important mean to distinguish and to identify populations of organisms at different levels. By molecular markers several complex organisms have been successful detected in plants for distinct aims. Ribosomal DNA (rDNA) has been used to evaluate genetic variability, microorganism phylogeny and to develop...
There is a demand for research on yellow passion fruit plants (Passiflora edulis Sims) used for juice production. Thus, the present study aimed to determine the number of plants per experimental plot and the number of plots per genotype for different properties of passion fruit. The data used were obtained from an experiment (Tangará da Serra, Mato...
The canola cultivation is highly dependent on water resources, which makes it necessary to conduct studies to determine the crop coefficient (Kc), with the purpose of improving the efficiency of water use. Thus, the objective of this study was to determine the Kc and calculate the thermic sum required to complete its development cycle. The experime...
The objective of this study was to evaluate the severity and the progress of ramulosis in the field after disease establishment through inoculation of cotton seeds with Colletotrichum gossypii var. cephalosporioides. The assay was carried out with five treatments and was replicated four times. The treatments consisted of plots with 5% of infected s...
Para as cultivares de habito indeterminado, nao ha relatos do momento mais adequado para realizar a aplicacao da dessecacao em pre-colheita. O trabalho teve como objetivo avaliar a influencia da dessecacao realizada em tres epocas sobre a qualidade fisiologica e sanitaria das sementes e caracteristicas agronomicas da cultivar de habito indeterminad...
Objetivou-se, neste trabalho, verificar o efeito da temperatura e do período de molhamento foliar no progresso da severidade do oídio Microsphaera diffusa Cke. & Pk., nas cultivares de soja Conquista e Suprema [Glycine max (L.) Merr.]. As plantas foram inoculadas em casa-de-vegetação por agitação de plantas doentes sobre plantas sadias no estádio v...
In this study the effects of temperature and leaf wetness period in the severity progress of Powdery Mildew Cke. & Pk. in soybean cultivars Conquista and Suprema [Glycine max (L.) Merr.] were evaluated. Plants at the V3 stage were inoculated in greenhouse. Subsequently, they were conditioned into growth chambers at temperatures of 15, 20, 25 and 30...
A avaliação da qualidade fisiológica de lotes de sementes de Sesbania virgata é dificultada pela dormência inerente à espécie, bem como pela inadequação metodológica de testes disponíveis. Para desenvolver procedimentos adequados à avaliação da qualidade das sementes de S. virgata, foram avaliados métodos tanto para quebra de dormência como para re...
A avaliação da qualidade fisiológica de lotes de sementes de Sesbania virgata é dificultada pela dormência inerente à espécie, bem como pela inadequação metodológica de testes disponíveis. Para desenvolver procedimentos adequados à avaliação da qualidade das sementes de S. virgata, foram avaliados métodos tanto para quebra de dormência como para re...
The availability of seeds infected by fungi or other pathogens transmissible by this way is important for several purposes. This work was conducted to evaluate proceedings of inoculations and period of exposition of seeds to Fusarium oxysporum f. sp. vasinfectum through the water restriction technique. The following methods were compared: (1) seed...
A Ferrugem Asiática (Phakopsora pachyrhizi H. Sydow & P. Sydow), relatada em diversas regiões do globo terrestre de climas tropicais e subtropicais, causa redução significativa na produtividade da soja [Glycine max (L.) Merr.]. Fatores bióticos como interação patógeno-hospedeiro e abióticos influenciam o progresso da doença. Objetivou-se neste trab...
Soybean rust caused by the fungus Phakopsora pachyrhizi, has been known to drastically reduce yields. Diverse studies are now in progress, to search information on the genetic resistance of cultivar currently planted. The objective of this study was to evaluate the both incubation and latent period and the progress of soybean rust on several genoty...
Técnicas de Microscopia de luz e eletrônica de varredura (MEV) foram utilizadas para acompanhar o desenvolvimento de Phakopsora pachyrhizi desde a inoculação de urediniósporos até a formação de soros urediniais em folíolos de soja. Gotas com 50 µL de suspensão com 3x104 urediniósporos.mL-1 foram depositadas sobre folíolos destacados de sete cultiva...
Light (LE) and scanning electron microscopy (SEM) were used to study the development of Phakopsora pachyrhizi from urediniospore germination to colonization on soybean. Drops of 50 µL of a spore suspension (3 x 104 urediniospores.mL-1) were inoculated on detached leaflets of seven cultivars, besides the genotypes PI 230970 and PI 459025. After inoc...
The objective of this study was to evaluate the effect of different storage methods on the viability of the urediniospores of P. pachyrhizi. Urediniospores were collected and stored in five different conditions: detached dry leaves (24°C), desiccator (10°C) + liquid nitrogen (-196°C) after 60 days, refrigerator (4°C), deep-freezer (from -60°C to 80...
The aim of this work was the characterization of the space-time severity progress of the common bean Anthracnose and cotton Ramulose through Geoestatistics. The experiments were conducted over different periods during the rainy season, in field conditions. Seeds inoculated by the water restriction method were sowed in the center of experimental plo...
The aim of this work was the characterization of the space-time severity progress of the common bean Anthracnose and cotton Ramulose through Geoestatistics. The experiments were conducted over different periods during the rainy season, in field conditions. Seeds inoculated by the water restriction method were sowed in the center of experimental plo...
The objective of this study was to verify the relationship between percentage of cotton seeds infected by Colletotrichum gossypii var. cephalosporioides and the progress of ramulosis in the field. The experiment was carried out in Lavras (Minas Gerais State, Brazil) and was designed in randomized blocks with five treatments and replicated three tim...
A transmissibilidade de Colletotrichum gossypii var. cephalosporioides foi estudada em diferentes temperaturas utilizando sementes de algodoeiro (Gossypium hirsutum) inoculadas com diferentes tempos de exposição ao patógeno. O experimento consistiu de seis tratamentos, sendo três tempos de exposição (36, 72 e 108 h) das sementes, inoculadas e não i...
The evaluation of Sesbania virgata seed physiological quality is hampered by its intrinsic seed dormancy and inadequate methodologies among available tests. To develop an adequate procedure to evaluate S. virgata seed quality, methods for dormancy breaking and tetrazolium test accomplishment were evaluated. In a first stage, seeds from five lots we...
