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Bioherbicidal action of Phoma dimorpha fermented broth on seeds and plants of Senna obtusifolia

Abstract: The weed Senna obtusifolia causes severe damages to pasture areas in Brazil, due to its high production and seed spread. This study aimed to evaluate the bioherbicidal action of Phoma dimorpha fermented broth in the pre-emergence and post-emergence of S. obtu

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Herbicidal bioactivity of natural compounds from Lantana camara on the germination and seedling growth of Bidens pilosa

Abstract: Lantana camara (L.) is considered one of the main invasive plants, and the allelochemicals produced by this species can be defined as bioactive secondary metabolites that mediate chemical interactions between the plant and other organisms and, therefore, play

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Soil water availability for drip-irrigated common bean crop

Abstract: Minimum limits of soil water storage should be established for the irrigation management of crops, in order to satisfactorily provide water to plants. This study aimed to define the soil water availability factor ( f factor) that provides the maximum agronomi

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Tomato production as a function of aeration levels after subsurface drip irrigation

Abstract: After rain or irrigation, the soil pores may present a low oxygen content (hypoxia). Soil aeration after irrigation has been used to overcome hypoxia-based problems. This study aimed to investigate the effect of four aeration levels (0, 0.5, 1.0 and 1.5 times

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Poultry litter and fresh mulch of Elephant grass improve the organic potato production

Abstract: The organic production system for potato is usually limited by the occurrence of diseases and nutrient shortage. In these cases, fresh grass mulch and organic fertilization can interact in the foliar late blight infestation and increase the yield and quality

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Adsorption isotherms and isosteric heat in Coffea arabica beans

Abstract: The knowledge of the adsorption hygroscopic equilibrium in coffee is pertinent for the adequacy of its storage, thus ensuring the quality of the product to the end consumer. The present study aimed to determine the adsorption isotherms of Arabica coffee (Acau

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Essential oils activity from plants of the Brazilian Caatinga on the vegetable leafminer

Abstract: Liriomyza sativae (Blanchard) is a worldwide polyphagous pest for horticultural and ornamental crops, whose chemical control is the major method adopted. However, botanical insecticides in the form of essential oils (EOs) are presented as promising alternativ

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Compatibility and yield of ‘Santa Cruz 47’ okra onto rootstocks of the Malvaceae family

Abstract: The little-known use of okra grafting, mainly to incorporate nematode resistance, requires evaluation of interspecific compatibilities. This study aimed to determine the compatibility of the okra ‘Santa Cruz 47’ cultivar grafted onto different rootstocks of t

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Feeding preference of Euborellia annulipes to Plutella xylostella: effects of temperature and prey development stage

Abstract: The ring-legged earwig Euborellia annulipes has been studied as a natural enemy of pest-insects and a potential predator of diamondback moth. Temperature is an important factor that mediates the pest population density and may affect the predator-prey relatio

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Use of agro-industry residues as substrate for the production of Euterpe precatoria seedlings

Abstract: The availability of single assai palm (Euterpe precatoria) seedlings with good quality is a fundamental requirement to expand the cultivation of the species. This study aimed to assess the use of fruit agro-industry residues as substrate for producing single

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Screening of cowpea accessions for cowpea aphid resistance

Abstract: Cowpea (Vigna unguiculata) genotypes may preserve important characteristics of potential use for the genetic breeding of this species. This study aimed to characterize sources of genetic resistance to the cowpea aphid (Aphis craccivora), among accessions main

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Interaction between potyvirus and crinivirus in sweet potato

Abstract: Sweet potato, inArgentina, is affected by the “encrespamiento amarillo”, a viral disease in which seven viruses are involved, among them two potyvirus (sweet potato feathery mottle virus - SPFMV and sweet potato virus G - SPVG) and a crinivirus (sweet potato

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Glyphosate-induced impact on the functional traits of the Bacillus sp. FC1 isolate

Abstract: The intensive use of glyphosate has shown to be harmful to non-target organisms. Considering the soil as a final herbicide acceptor, the microbial community present on it is one of the critical factors to be monitored. This study aimed to isolate Bacillus sp.

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Cowpea development under different temperatures and carbon dioxide concentrations

Abstract: The increase of CO2 concentrations and temperatures may affect the plant development and production. This study aimed to evaluate the impact of the increased temperature and carbon dioxide concentration on the development of cowpea cultivars. The experiment w

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Accumulation dynamics and physicochemical variability of starch in cultivars of Canna edulis Ker

Abstract: Canna edulis, also known as achira or sagu, is widely grown in South America because its rhizomes are a major source of starch for food and agroindustry. This study aimed to assess the accumulation rate and physicochemical changes of starch from four canna cu

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Water in maize whorl enhances the control of Spodoptera frugiperda with insecticides

Abstract: The fall armyworm Spodoptera frugiperda is among the main insect-pests on maize crops, due to its damaging potential and control issues related to the larval habit of concealing itself within the plant whorl. This study aimed to evaluate the effect of water i

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Gas exchanges and growth of soybean cultivars submitted to water deficiency

Abstract: A low availability of water in the soil may alter morphological traits and physiological processes in soybean, limiting its development, mainly at late sowings. This study aimed to evaluate the leaf gas exchanges and dry matter accumulation in soybean cultiva

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Agronomic traits in common bean are influenced by infestation and coexistence with volunteer maize

Abstract: Maize seeds lost during harvest may emerge and establish themselves during the cultivation of common bean, becoming a problematic weed in succession crops. This study aimed to evaluate the effect of the infestation level and interference period of volunteer m

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Initial production and quality of camu-camu fruits under organic and mineral fertilization

Abstract: Camu-camu Myrciaria dubia (Kunth) McVaugh is a native plant of the Amazon basin floodplains that is facing a domestication process in dry land. This study aimed to evaluate, qualitatively and quantitatively, camu-camu fruits obtained at the first harvest, in

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Soil water dynamics and yield in maize and Brachiaria ruziziensis intercropping

Abstract: In intercropping systems, a high plant density can delay the biomass accumulation and affect the water availability to plants. This study aimed to evaluate the soil water dynamics and the crop yield performance in maize and Brachiaria ruziziensis intercroppin

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Effects of meteorological variables on sugarcane ripening in the Cauca river valley, Colombia

Abstract: Sugarcane ripening is conditioned by the interaction between biological factors of the crop and climate. This study aimed to evaluate the effects of some meteorological variables on the sucrose content, during the ripening period, in the Cauca river valley (C

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Effects of mycorrhizal association and phosphate fertilization on the initial growth of coffee plants

Abstract: In the establishment of coffee crops, phosphate fertilization is one of the most important soil fertility managements. Aiming to minimize losses, among the options in use are fertilizers with a slow release of nutrients, combined with the inoculation of arbus

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Protein yield and mineral contents in Pereskia aculeata under high-density planting system

Abstract: The development of technologies to increase the yield of Pereskia aculeata Mill. may contribute to its market insertion as an excellent source of protein. This study aimed to assess the influence of plant density on protein yield and mineral contents of P. ac

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Cocoa shell substrate, indolebutyric acid doses and length of cuttings in the rooting of Fridericia chica

Abstract: Fridericia chica (Bonpl.) L. G. Lohmann has medicinal properties and potential for commercial cultivation; however, the propagation characteristics of this species have been poorly evaluated. This study aimed to analyze the length of cuttings, indolebutyric a

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Trichoderma and Clonostachys as biocontrol agents against Meloidogyne incognita in sacha inchi

Abstract: One of the main pathological problems for cropping sacha inchi (Plukenetia volubilis L.) is its susceptibility to root-knot nematodes (Meloidogyne incognita). In this study, fungal endophytes were explored in the stems and leaves of seven species of the Pluke

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Dry matter production and nitrogen, phosphorus and potassium uptake in Crotalaria juncea and Crotalaria spectabilis

Abstract: There are several benefits in the cultivation of Crotalaria spp., including high levels of biomass production and N accumulation, nutrient cycling and antagonistic activity against some nematodes. However, information on nutritional demand is still scarce for

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Susceptibility of Spodoptera frugiperda and Chrysodeixis includens (Lepidoptera: Noctuidae) to infections caused by Metarhizium rileyi

Abstract: Due to the reduced host spectrum of the entomopathogenic fungus Metarhizium rileyi, its pathogenicity against different target insects must be assessed to develop biopesticides capable of controlling more than one pest species. This study aimed to evaluate th

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Container volume and controlled-release fertilizer influence the seedling quality of Agonandra brasiliensis

Abstract: Agonandra brasiliensis is a tree from tropical forests, with a wide occurrence in the Brazilian Savannah region. Despite its potential as wood and for reforestarion, efficient protocols for its seedling production are still lacking. This study aimed to assess

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Physiological and biochemical effects of Lantana camara L. allelochemicals on the seed germination of Avena sativa L.

Abstract: Lantana camara (L.) is considered one of the main weeds of agricultural crops, and allelochemicals produced by this species may be a source for the development of natural herbicides. In this study, phytotoxic effects of L. camara aqueous extracts on seed germ

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Insecticide selectivity to Ooencyrtus submetallicus (Hymenoptera: Encyrtidae) under extended laboratory conditions

Abstract: Bioassays to evaluate the selectivity of pesticidesto beneficial organisms are important tools to discriminate products compatible with biological pest control programs. This study aimed to evaluate the effects of the main insecticides used in the soybean cro

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Paclobutrazol in the flowering management affects the quality of Malpighia emarginata fruits

Abstract: Floral management using the growth regulator paclobutrazol may be an alternative for promoting the uniformity of flowering and fruiting in West Indian cherry (Malpighia emarginata D.C.) plants. However, the effects of its use on fruit quality are still unknow

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Tomato grafting onto Solanaceae genotypes to control bacterial wilt (Ralstonia solanacearum Smith 1896)

Abstract: The tomato cultivation in the Amazon is not feasible mainly due to the natural infestation of Ralstonia solanacearum in the soil. Preventive control through grafting has been one of the main alternatives to manage this problem. This study aimed to evaluate th

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Control of contaminants in the in vitro establishment of Guadua latifolia

Abstract: The Amazonian bamboo forests are located in an important region of high biodiversity in Brazil, Peru and Bolivia, forming the largest native bamboo forest reserve in the world. However, the bamboos from these forests have characteristics that hinder their pro

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Stress conditions in soybean areas based on measurements of soil-plant-atmosphere system and UAV images

Abstract: The identification of stress conditions in soybean crops is, in most cases, inaccurate, since they may not be noticeable to their full extent if only walking observations are carried out in the crop fields. This study aimed to identify the stress conditions i

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Simulated rainfall following the preplant application of 2,4-D and dicamba in soybean

Abstract: Soil residues following the application of 2,4-D and dicamba for weed control may delay the establishment and initial development of soybean, but rainfall can reduce the interval required between application and sowing. Rainfall volumes (0; 10; 30; 60; and 90

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Potassium availability in Brazilian semiarid soils cultivated with melon

Abstract: Haplic Vertisols and Typic Quartzipsamments are among the main classes of soils used for melon production in the Brazilian semiarid region. Potassium (K) is the nutrient most extracted by yellow melon fruits and, for this reason, high doses of potassium ferti

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Evaluation of wheat genotypes resistance to Fusarium head blight in Paraguay

Abstract: Fusarium head blight (FHB), or scab, caused by a Fusarium spp. complex, is an important wheat disease in Paraguay. Among the strategies used to control it, the genetic resistance is considered highly efficient and cost effective. This study aimed to evaluate

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Milling yield components of local dryland rice varieties

Abstract: Family farmers in the western Santa Catarina state, Brazil, have conserved local dryland rice varieties. However, the literature lacks data about the milling performance of these varieties, as well as about the effects of genotypes, environment and genotype x

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Relationship between photosynthetic pigments and corn production under nitrogen sources

Abstract: Nitrogen (N) is a dynamic element in the soil, so new nitrogen fertilization alternatives are required as a way of maximizing its efficiency. Besides, vegetation sensors are a way to assess and manage the nutritional demands of plants. This study aimed to eva

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Plant diversity in integrated crop-livestock systems increases the soil enzymatic activity in the short term

Abstract: Integrated crop-livestock systems (ICLS) intercropped in the pasture phase promote alterations in the dynamics of soil attributes, among them the enzymatic activity. This study aimed to evaluate soil enzymatic and microbial activities, following the implement

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Quality of millet seeds at different positions of the panicle

Abstract: Many factors may interfere in the quality of millet seeds; however, it is not known whether the location at different positions of the panicle may affect this quality. This study aimed to evaluate the quality of millet seeds produced at different positions of

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Nitrogen fertilization management in white oat using spectral indices

Abstract: Remote sensing techniques have been considered a new technology in worldwide agriculture for diagnosing the plant nutritional demand. Fertilizer management efficiency is a goal to be achieved, and modern tools based on remote sensing are promising for monitor

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Contribution of phenolic acids and dimethyl sulfone to the allelopathic effect of invasive Tridax procumbens
Yusuf Andriana Tran Dang Xuan

Abstract: Tridax procumbens is an invasive weed with a strong allelopathic activity. In this study, the contribution of phenolic acids and dimethyl sulfone to the allelopathic effect of T. procumbens was evaluated against Raphanus sativus. Phenolic acids (benzoic, ella

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Use of cassava wastewater in Capsicum chinense production

Abstract: The use of resources derived from the agricultural property itself to meet the needs of producers promotes the reduction of costs with commercial inputs and recycling of by-products, among them the liquid waste from the cassava flour production, called cassav

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Brassinosteroid accelerates the growth of Psidium hybrid during acclimatization of seedlings obtained from minicuttings

Abstract: Guava rootstocks can be multiplied by minicuttings in environment with a high relative humidity, being necessary an acclimatization period. Certain growth regulators favor the acclimatization, with brassinosteroids being successfully used in other fruit plant

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Growth and yield of potato genotypes in the Brazilian Midwest

Abstract: The knowledge of the plant growth pattern under specific climatic conditions (growth curve) is the basis for exploiting the maximum yield potential of potato genotypes. This study aimed to establish the growth curve, as well as to evaluate the agronomic chara

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Macronutrient accumulation curves in potato genotypes in the Brazilian Savanna

Abstract: Knowledge on the nutritional demands of different potato genotypes is necessary for the development of fertilizing recommendations. This study aimed to determine and compare the macronutrient accumulation curves in the Agata, Asterix, BRSIPR Bel and F183-08-0

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Mulch decomposition and nitrogen, phosphorus and potassium release in vetiver grass at different plant densities

Abstract: In order to meet the need for nutrients or soil cover, when plants are used as green manure, it is necessary to determine the ideal plant population, as well as the amount and duration of released nutrients. This study aimed to assess the decomposition and ni

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Management of liquid swine manure: impact on mineral nitrogen dynamics and corn yield

Abstract: The agronomic efficiency of liquid swine manure (LSM) depends on the use of strategies to mitigate nitrogen (N) losses after its application to the soil, and thus preserve its fertilizing potential. In order to evaluate the injection of LSM into the soil and

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Lactofen and kinetin in soybean yield

Abstract: The herbicide lactofen has been used by producers in many conditions, in order to increase the soybean yield. This study aimed to evaluate the influence of lactofen and the phytohormone kinetin on the morpho-agronomic traits, carbohydrate partitioning and yie

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Genetic divergence and path analysis in wheat cultivars under heat stress

Abstract: One of the biggest limitations for the wheat crop expansion to Brazilian tropical regions is the high temperature in the rainy season. This study aimed to select, based on genetic divergence and path analysis, cultivars that tolerate cultivation in the summer

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Nitrogen rates on the agronomic performance of second-crop corn single and intercropped with ruzigrass or showy rattlebox

Abstract: Topdressing nitrogen (N) rates may alter the second-crop corn performance, and this response may vary if the corn is grown single or intercropped with grass or leguminous species. This study aimed to evaluate the effect of topdressing N rates on the growth an

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Agro-economic performance of bur gherkin under staking systems

Abstract: The bur gherkin cultivation is predominantly carried out without a staking system, but problems such as the “white belly” and fruit rot occur in this system. This study aimed to evaluate staking systems for bur gherkin plants. The experimental design was rand

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Biochemical characterization of multifunctional endophytic fungi from Bambusa oldhamii Munro

Abstract: In a plant-endophyte relationship, substances secreted by microorganisms can help the plant to defend itself against pathogens and also to promote an increase in biomass. This study aimed to biochemically characterize endophytic fungi from Bambusa oldhamii Mu

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Second-crop cowpea under residual phosphorus doses in the Brazilian Amazon

Abstract: The southeastern mesoregion of the Brazilian Pará state is an important soybean producer, and the second-crop system can increase the local agricultural production. However, Latosols with medium to very clayey texture predominate in the region and, despite be

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Neoseiulus californicus preying on Tenuipalpus heveae

Abstract: The spread of Tenuipalpus heveae Baker (Acari: Tenuipalpidae) can be controlled by managing predatory species such as Neoseiulus californicus (McGregor) (Acari: Phytoseiidae). This study aimed to evaluate the predation of N. californicus at different biologic

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Intercropping maize and succession crops alters the weed community in common bean under no-tillage

Abstract: Crop rotation is critical in the management of herbicide-resistant weed species. This study aimed to evaluate the effect of intercropping systems of maize with brachiaria or crotalaria on qualitative and quantitative parameters of the weed seedbank, along the

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Manganese fertilization for sweet cassava production under organic management system

Abstract: Organic management farms in the Federal District, Brazil, usually present overlimed and overfertilized soils, with high content of organic matter and high pH. These conditions lead to a low availability of manganese to crops. Many sweet cassava (Manihot escul

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Emergence and growth of maize submitted to inoculant doses associated with saline water irrigation

Abstract: Salinity, in general, affects the plant growth and development, making it a limiting problem for the agricultural production. This study aimed to evaluate the effect of inoculant doses of Azospirillum brasilense on the emergence and growth of maize submitted

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Yield and profitability of flooded rice genotypes in relation to nitrogen doses and phosphorus and potassium application

Abstract: The use of hybrid genotypes is a good alternative for increasing the flooded rice yield. However, there is a need for validation of the fertilizer management under different edaphoclimatic conditions and its greater profitability. This study aimed to evaluate

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