Results: 240

Geohelminths in the soil of the Laguna dos Patos in Rio Grande do Sul state, Brazil

Braz. j. biol; 80 (4), 2020
Abstract This study aimed at examining the prevalence of eggs and larvae of parasites - that may cause diseases to humans and other animals - in the soil of public squares located on the shore of Laranjal beaches, in the Laguna dos Patos, in Pelotas, Rio Grande do Sul state, Brazil. Four fieldwork trips ...

Correlations between soil attributes and the occurrence of nematodes and grain yield in an off-season maize crop in Mato Grosso do Sul

Biosci. j. (Online); 36 (6), 2020
Systems of soil cultivation and use directly influence crop yield by interfering with the soil chemical, physical, and biological attributes. This study aimed to evaluate the correlation between maize grain yield, soil chemical and biological attributes, and the occurrence of nematodes in maize crops gro...

Effects of different soil tillage-sowing systems on plant development and emergence traits of second crop soybean

Biosci. j. (Online); 36 (6), 2020
Effects of different soil tillage and sowing systems (Conventional Soil Tillage – CST: Moldboard plow + gobble disc + disk harrow + harrow + sowing machine; Reduced Soil Tillage – RST: rototiller-combined soil tillage machine + sowing machine; Ridge Sowing – RS: gobble disc + ridge-sowing machine; ...

Soil macrofauna in green manures preceding cotton growing

Biosci. j. (Online); 36 (6), 2020
The objective of this work was to evaluate the abundance of the soil macrofauna in four green manure species, before the cotton crop. The experimental design was a randomized block design with four treatments: Mucuna pruriens (gray mucuna), Canavalia ensiformes (pork bean), Cajanus cajan (pigeon pea) and...

Bacterial strains decrease solubility of potassium in the soil

Biosci. j. (Online); 36 (5), 2020
This study aimed to verify whether inoculation with strains of diazotrophic bacteria, with proven ability to solubilize potassium (K) in vitro, contributes towards the release of K in the soil after fertilization with phonolite rock powder. The experiment was conducted in containers with 0.3 dm-3 of so...

Irrigation management in soybean crops influences the occurrence of nematodes in the soil

Biosci. j. (Online); 36 (5), 2020
One of the main limitations of soybean production is related to water availability and organisms found in the soil. Under the hypothesis that soil moisture may influence the nematode population, this study aimed to verify the occurrence of nematodes associated with different irrigation management in soyb...

Effects of poultry litter concentration and substrate source on the development of Mangifera indica L. ‘coquinho’

Biosci. j. (Online); 36 (5), 2020
We conducted two experiments to evaluate the growth of mango (Mangifera indica L., CV Coquinho) rootstock in different substrates and determine the optimal concentration of poultry litter amendments to the soil in combination with seeds with or without an endocarp endocarp. The following fac...

Litter decomposition and nutrient release dynamics of leaves and roots of the babassu palm in eastern Amazonia

Acta amaz; 50 (3), 2020
The ruderal babassu palm (Attalea speciosa) is expanding on large areas of degraded Amazon landscapes. Decomposition of leaves and roots is in the center of plant:soil interactions. We evaluated decomposition and nutrient concentrations of leaves and fine roots of babassu in comparison with two exotic re...

Root-knot nematode, Meloidogyne javanica, in response to soil fertilization

Braz. j. biol; 80 (3), 2020
Abstract Root-knot nematodes (RKNs) (Meloidogyne spp.) are well known disease problem causing major losses in vegetable crops. Although, chemical nematicides have been used as one of the primary means for controlling RKNs, reliance on these nematicides is associated with heavy costs and negative effects ...

Isolation of culturable mycota from Argentinean soils exposed or not-exposed to pesticides and determination of glyphosate tolerance of fungal species in media supplied with the herbicide

Rev. argent. microbiol; 52 (3), 2020
Abstract The current agricultural system has led to the development of glyphosate (GP)-resistant weeds, causing an increase in GP doses and applications. Native mycota of pesticide-contaminated sites are the major source of pesticide-degrading microorganisms. The aims of the present study were to isolate...