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Isoenzyme activity in monitoring deterioration of Balfourodendron riedelianum seeds

Abstract: In this study, we sought to identify efficient enzymes for use in monitoring the deterioration and loss of germination of Balfourodendron riedelianum (Engler) Engler seeds. The research was conducted at the Laboratório de Tecnologia de Sementes e Mudas of the

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Data transformation: an underestimated tool by inappropriate use

Abstract: There are researchers who do not recommend data transformation arguing it causes problems in inferences and mischaracterises data sets, which can hinder interpretation. There are other researchers who consider data transformation necessary to meet the assumpt

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Regression models for prediction of corn yield in the state of Paraná (Brazil) from 2012 to 2014

Abstract: This study aimed to identify areas that showed spatial autocorrelation for corn yield and its predictive variables (i.e., average air temperature, rainfall, solar radiation, soil agricultural potential and altitude) and to determine the most appropriate spati

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Soybean productivity in Rhodic Hapludox compacted by the action of furrow openers

Abstract: The heavy traffic of machines in no-tillage systems causes problems as soil compaction and loss of crops productivity. The objective of this paper is to evaluate the productivity of soybeans in reference to furrow openers and the levels of soil compaction in

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Validation of an experimental prototype of thick-layer fixed bed dryer and determination of the quality of the dried soybean grains

Abstract: The aim of this study was to validate an experimental prototype dryer with a thick-layer fixed bed and determine the quality of the dried soybean grains. The drying system was designed as a chamber with four independent drying cells, with a capacity of 164 ki

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Agrosilvopastoral system enhances suppressiveness to soybean damping-off caused by Rhizoctonia solani and alters Fusarium and Trichoderma population density

Abstract: Integrated crop-livestock systems (ICLS) are sustainable options for agricultural diversification, but there have been few studies on the influence of ICLS on soil microorganisms. This work investigated the influence of agropastoral (AP) and agrosilvopastoral

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Ovicidal effect of the essential oils from 18 Brazilian Piper species: controlling Anticarsia gemmatalis (Lepidoptera, Erebidae) at the initial stage of development

Abstract: The toxicities of essential oils (EOs) from 18 species of Brazilian Piperaceae were assessed on eggs of the velvetbean caterpillar, Anticarsia gemmatalis. Oils were extracted using steam distillation, and dilutions were made for bioassays at concentrations of

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Carryover of tembotrione and atrazine affects yield and quality of potato tubers

Abstract: Crop rotation improves potato (Solanum tuberosum L.) crops; however, in some cases, it can have some negative effects due to the herbicides previously used in crops under rotation. These effects are the decline in the yield and the appearance of physiological

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Periods of weed interference in chickpea grown under different doses of nitrogen fertilizer topdressing

Abstract: Weed interference can reduce chickpea growth and, therefore, productivity depending on the period of coexistence and the nutritional status of the crop, among other factors. A study was performed over two crop years to estimate the critical period of weed int

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Interrelationship between morphological, agronomic and molecular characteristics in the analysis of common bean genetic diversity

Abstract: The present study aimed to analyze, through 12 morpho-agronomic traits and 18 micro satellite loci, the genetic diversity in 17 common bean accessions from the Bean Germplasm Bank of the Center for Applied Agricultural Research of the State University of Mari

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Population structure and impact of recurrent selection on popcorn using EST-SSR markers

Abstract: The success of any recurrent selection program depends on the genetic variability of the evaluated population, which is used to refer to the diversity of existing alleles at many genetic loci. Thus, the goal of the present study was to investigate the impact

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Linkage disequilibrium and population structure in Fragaria chiloensis revealed by SSR markers transferred from commercial strawberry

Abstract: The Chilean strawberry Fragaria chiloensis (L.) Mill. is the maternal progenitor of the commercial strawberry (Fragaria ( ananassa Duch.), which is characterized by fruits with high organoleptic quality and is well-suited to areas where drought and salinity r

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Parental selection in diallel crosses of Jatropha curcas using mixed models

Abstract: Diallel crosses in an unbalanced scheme were carried out in Jatropha to (i) evaluate the additive and non-additive genetic components; (ii) select parents through the general combining ability; (iii) estimate the specific combining ability used in the crosses

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Symbiosis of rhizobia with Gliricidia sepium and Clitoria fairchildiana in an Oxisol in the pre-Amazon region of Maranhão State

Abstract: Gliricidia (Gliricidia sepium) and sombreiro (Clitoria fairchildiana) have been recommended for agroforestry systems and reforestation of degraded areas due to their fast growth and symbiosis with rhizobia. However, little is known about native populations th

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Gherkin cultivation in saline medium using seeds treated with a biostimulant

Abstract: The objective of this study was to evaluate the effects of a biostimulant on gherkin seeds, cultivar Liso de Calcutá, under conditions of salt stress. A split-plot experimental design with five replications was used; the main plot was represented by two level

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Glyphosate efficacy on sourgrass biotypes with suspected resistance collected in GR-crop fields

Abstract: In Brazil, infestations of crop areas with glyphosate-resistant (GR) sourgrass (Digitaria insularis (L.) Fedde) biotypes has risen significantly, increasing crop production costs. Glyphosate efficacy on three biotypes (GO, BA and MT) of sourgrass with suspect

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Lipid peroxidation and antioxidant enzymes of Jatropha curcas L. seeds stored at different maturity stages

Abstract: The objective of the present work was to investigate the antioxidant enzyme activities and the occurrence of lipid peroxidation during storage of J. curcas seeds obtained from fruits at different maturity stages. Seeds extracted from fruits collected at three

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Organic cultivation of onion under castor cake fertilization and irrigation depths

Abstract: Two experiments were carried out to evaluate the effects that different doses of castor bean (0, 200, and 300 g m-2) and irrigation levels (204, 224, 278, and 321 mm in 2014, and 278, 302, 397, and 444 mm in 2015) have on both the productivity and quality of

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Performance of fall and winter crops in a no tillage system in west Paraná State

Abstract: The long-term exploitation of natural resources by agricultural activities has resulted in the need for alternative measures to restore degraded soil. The cultivation of cover crops can generate great benefits for agricultural systems, enabling the exploitati

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Phytosociology of weed in the southwestern Goiás region

Abstract: Roundup Ready® technology adoption and the cultivation of a second crop have changed chemical control methods and weed management in the southwest region of Goiás State, Brazil. Considering these changes, this study aimed to perform a phytosociological survey

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Radiographic images and relationship of the internal morphology and physiological potential of broccoli seeds

Abstract: Image analysis using X-rays is an efficient technique for assessing the seed quality of several species, presenting itself as a rapid response method that is simple to execute, reproducible and non-destructive. Thus, this research adjusted a methodology that

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Trough and pot crop systems with leaching recirculation and defoliation levels for mini tomatoes

Abstract: The use of raw rice husk as substrate allows the use of crop systems that promote the recirculation of leachate in long crop cycles. Mini tomatoes present relatively low demand for photoassimilates. Thus, partial defoliation of the sympodium could benefit the

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Improvement of production and fruit quality of pitayas with potassium fertilization

Abstract: Pitaya is a fruit that is becoming promising for cultivation around the world due to the quality of its fruits in terms of taste and their peculiar external shape. Because it is a recenttly cultivated crop, information about fertilization is essential to enab

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Estimating soybean yields with artificial neural networks

Abstract: The complexity of the statistical models used to estimate the productivity of many crops, including soybeans, restricts the use of this practice, but an alternative is the use of artificial neural networks (ANNs). This study aimed to estimate soybean producti

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Evolution of nutrient availability in maturation phase of composting using proportions of different residues inoculated with Beijerinckia indica

Abstract: Organic matter has low N content; however, organic matter may be enriched by inoculation with selected diazotrophic bacteria. The aim of the paper was to evaluate the effects of biofertilizer produced by mixing different types and proportions of organic matte

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Growth and physiology of jelly palm (Butia capitata) grown under colored shade nets

Abstract: Butia capitata (Mart.) Becc., commonly known as jelly palm, is a palm tree native to the Cerrado biome. It is considered an endangered species owing to intensive extractive exploitation of its fruits, with slow and uneven seminiferous propagation as an aggrav

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Bioactive compounds, antioxidant and physic-chemical characteristics of the dovyalis fruit

Abstract: The objective of this work was to evaluate the bioactive compounds, antioxidant activity, and physicochemical characteristics of dovyalis fruit to obtain technological knowledge about this fruit when grown under the conditions found in the municipality of Mar

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Evaluation of grain sorghum hybrids for aluminum tolerance in nutrient solution

Abstract: Sorghum (Sorghum bicolor L. Moench) is one of the most important cereal crops in the world. In Brazil, the acreage of grain sorghum during off-season is quite expansive. Most of this area is the Cerrado, a Brazilian biome that is similar to a Savannah and is

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Di-nitrogen fixation at the early and late growth stages of soybean

Abstract: Soybean derives a significant portion of the required nitrogen (N) from the symbiosis with rhizobia bacteria. However, information on the available genetic variation for N2 fixation capacity in different growth stages of soybean is limited. The objective of t

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Soil penetration resistance mapping quality: effect of the number of subsamples

Abstract: There is no consensus in the literature regarding how many subsamples are needed to perform accurate on-farm soil penetration resistance (SPR) mapping. Therefore, the objective of this study was to define the number of subsamples per sampling point needed to

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Chromium accumulation in maize and cowpea after successive applications of composted tannery sludge

Abstract: Chromium (Cr) accumulation in soil and plants has been reported after successive applications of tannery sludge, which is a matter of concern because Cr can promote environmental contamination and affect the food chain. In this study, we evaluated the growth

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The growth, photosynthetic pigments and essential oil composition of monocropped and intercropped lemon balm with yarrow

Resumo: The purpose of this study was to assess the influence of lemon balm intercropping with yarrow on the vegetative growth, photosynthetic pigments and essential oil contents as well as the chemical composition of essential oils. Accordingly, the lemon balm and y

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Influence of pollination on canola seed production in the Cerrado of Uberlândia, Minas Gerais State, Brazil

Abstract: The objective of this study was to evaluate the influence of pollinating insects on canola productivity for different commercial hybrids, Hyola 61 and Hyola 433, in Minas Gerais State, Brazil. The studies were conducted at the Fazenda Experimental Água Limpa

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Metabolic alterations and X-ray chlorophyll fluorescence for the early detection of lead stress in castor bean (Ricinus communis) plants

Abstract: The remediation of lead-contaminated areas poses a serious challenge to soil chemists because Pb has low solubility in soil. Thus, Pb phytostabilization is considered to be an attractive remediation technique. Castor bean (Ricinus communis) is an oilseed crop

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Mapping of the time available for application of pesticides in the state of Paraná, Brazil

Abstract: Spraying practices are highly sensitive to variations in climatic conditions, so it the spatial variability of the number of monthly hours available for the application of pesticides in the state of Paraná, Brazil, was determined and analyzed. An hourly time

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Chronological analysis of the physiological quality of diaspores of Myracrodruon urundeuva Fr. All. in semiarid regions

Abstract: The objective of this study was to evaluate the physiological quality of diaspores from Myracrodruon urundeuva mother trees developing in the Cariri region of the state of Paraíba, Brazil. The seeds were collected during three consecutive years and from diffe

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Influence of sulfur on selenium absorption in strawberry

Abstract: Selenium (Se) is an essential mineral element for animals and humans, and attention has been devoted to Se biofortification of agricultural crops. Due to the scarcity of studies aimed at guiding the nutritional Se-enrichment on strawberry and the need to unde

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Germination and biochemical components of Salvia hispanica L. seeds at different salinity levels and temperatures

Abstract: Most plant species are susceptible to the effects of salinity, such as increases in osmotic potentials and deleterious ionic effects, which in turn affect water absorption in plants and, consequently, compromise germination and seedling growth. Hence, this st

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Technical and economic viability and nutritional quality of mombasa guinea grass silage production

Abstract: The objective of this study was to evaluate the viability of pasture with high production capacity and the potential for production of silage using different sources and doses of nitrogen (N) by quantifying the productivity of dry matter (DM), some qualitativ

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Sugarcane cultivation with source potassium low water-soluble

Abstract: Thermopotash is a fertilizer with low solubility but has a release level compatible with plant demands. This study aimed to compare the effect of Thermopotash to that of KCl in sugarcane. Field work was conducted during two crop seasons, in a randomised block

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Increased transient genetic transformation in immature embryos of Brazilian BR 451 maize co-cultivated with Agrobacterium tumefaciens

Abstract: Genetic engineering has amplified the possibilities of crop breeding and supported sustainability ideals. Agrobacterium tumefaciens is the preferred transformation system, since it produces transgenic plants with more stable transgene expression and inheritan

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Adaptability and stability assessment of bean cultivars of the carioca commercial group by a Bayesian approach

Abstract: To develop new bean commercial cultivars, a series of experiments called Value for Cultivation and Use (VCU) assays are necessary. Bayesian analysis using information on prior VCU trials is an alternative to obtain greater precision during genotype selection.

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Calcário, fosfogesso e doses de fertilizantes afetando a fertilidade do solo e o desenvolvimento do feijoeiro-comum em sistema de plantio direto em um Latossolo do Cerrado

Resumo: Existe carência de informação na região tropical sobre a interação entre calcário, fosfogesso (FG) e adubação na fertilidade do solo e seu efeito na produção do feijão-comum. O estudo objetivou determinar o efeito da aplicação anual de PG e calcário e níveis

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Accelerated ageing test and behaviour investigation of isoenzymes in sesame seeds

Abstract: The seeds of a sesame crop contain approximately 50% oil content, one of the main reasons for their cultivation. However, information regarding methodologies for the assessment of quality seeds of this culture are scarce. Therefore, the objective of this stud

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Strategies to select soybean segregating populations with the goal of improving agronomic traits

Abstract: The success of breeding programs depends on selection procedures and on the breeding methods adopted for selecting segregating populations. The objective of this study was to evaluate the efficiency of the Bulk method with selection in the F3 generation (Bulk

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Fuzzy control systems for decision-making in cultivars recommendation

Abstract: The objective of the present study was to propose fuzzy control systems to support the recommendation of cultivars of different agronomic crops. Grain yield data from 23 lines and 2 cultivars of red bean were used to evaluate the applicability of these contro

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Cultivation of immature Capsicum spp. embryos for incompatible-crossing embryo rescue

Abstract: The in vitro culture of embryos is an important technique to enable the rescue of embryos from incompatible crosses. Studies analyzing the factors that affect the in vitro culture of zygotic embryos are scarce. This study evaluated the effect of the genotype

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Mechanical properties of the rachis from macaw palm bunches

Abstract: Numerical implementation methods such as the finite element method can be used in machine design to study the dynamic behavior of the plant. Input parameters for using the finite element method should be set based on the geometrical, physical and mechanical s

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Primary leaf growth and coleoptile length in maize seedlings

Abstract: Evaluation of the physiological potential of maize seeds during the certification process is performed by a germination test. However, some tests show a delay in the growth of aerial seedling organs that does not reflect seed lot behavior in the field. This s

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‘Navelina’ oranges submitted to pre-harvest resistance inducers

Abstract: The objective of this study was to evaluate the physical-chemical characteristics, rot index and bioactive compounds of ‘Navelina’ oranges under postharvest refrigerated storage conditions after pre-harvest resistance induction in crops from 2015 and 2016. Th

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Manihot leaf abscission induced by ethrel

Abstract: This study aimed to assess the impact of ethrel spraying on cassava leaf abscission at different stages of cultivar development. Two experiments were performed using randomized block designs, with 15 total treatments (three repetitions of five conditions) arr

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Distribuição de alumínio trocável em profundidade nos solos ácidos: um estudo em áreas subtropicais do Brasil

Resumo: Alta disponibilidade de Al demanda maiores cuidados para tornar os solos aptos para a agricultura devido a toxidez para as plantas cultivadas. Contudo, as pesquisas sobre a relação entre a distribuição de Al em profundidade e o intemperismo do solo têm sido p

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Effect of anonaceous extracts on Aphis gossypii (Glover, 1887) (Hemiptera: Aphididae) and selectivity to Eriopis connexa (Germar, 1824) (Coleoptera: Coccinellidae)

Abstract: The effects of ethanolic and hexanic extracts of soursop and sugar apple (EES, EHS, EESA and EHSA, respectively) on Aphis gossypii (Hemiptera: Aphididae) and its natural enemy Eriopis connexa (Coleoptera: Coccinellidae) by contact exposure, residual effect an

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Mechanisms for water-use efficiency between bean cultivars tolerant to drought are different

Abstract: The water-use efficiency (WUE) has been proposed as an alternative to mitigate the effects of climate change in agriculture and to reduce pressure on water resources, mainly in species with high water requirements which are grown under rainfed conditions. The

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Recycling of the biomass waste defatted almond meal as a novel nutritional supplementation for cultivated edible mushrooms

Resumo: Defatted almond meal (DAM) is an useless biomass waste obtained after oil extraction. The substrate designed for mushroom cultivation is achieved through a controlled composting process from agricultural by-products (chicken manure and wheat straw). This work

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Comparison of methods to quantify soil microbial biomass carbon

Abstract: Soil microorganism biomass is an important soil quality indicator. The microbial biomass of soil was determined by killing and lysing the soil microbes by fumigation with chloroform, irradiation with gamma rays, or irradiation with microwaves. Four soils with

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Growth and development of yacon in different periods of planting and growing regions

Abstract: The increasing interest in the commercial exploitation of yacon has demanded adequate technological knowledge for the implantation and management of the crop, including planting periods and cultivation regions that contribute to the satisfactory growth and de

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Interrelations between agronomic and technological fiber traits in upland cotton

Abstract: Fiber length stands out among technological traits as one that still needs to be improved in cotton. Thus, the objectives of this work were to quantify the interrelations between agronomic and technological fiber traits and to identify traits that could be us

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Organic cherry tomato yield and quality as affect by intercropping green manure

Abstract: The aim of the study was to determine the yield and quality parameters of organic cherry tomatoes cultivated by intercropping with green manure in two successive years. The experimental design was a randomized block with eight treatments and five replicates a

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Microsatellite molecular marker-assisted gene pyramiding for resistance to Asian soybean rust (ASR)

Abstract: The present study aimed at pyramiding ASR-resistance genes through microsatellite (SSR) marker-assisted selection (MAS) and demonstrating the pyramiding steps. To obtain the first generation of gene pyramiding, crosses were made between introduced plants (PI’

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