The forthcoming of silicon (Si) highly soluble sources provided a suitable alternative to Si use in agroecosystems.There are many benefits associated application crops, such as improvement feed quality.In this sense, the aim work was evaluate effect foliar on physiological quality, biomass production, and accumulation Sorghum bicolor.The experiment conducted under greenhouse condition using an entirely randomized design, with five rates (0 control), 0.84, 1.68, 2.52, 3.36g L -1 Si) applied...

The Bambuí Group, formed from siliciclastic sediments deposited on an extensive epicontinental platform at the end of Neoproterozoic era, is characterized by limestones with fine to very texture. Limestone-derived soils in southeast Tocantins state, Brazil, are less notorious than similar other regions Brazil and their characterization could contribute Brazilian System for Soil Classification (SiBCS). Given that little known these soils, despitetheir agricultural potential, objective this...

Foliar fertilization may be a viable strategy to boron supply in irrigated cropping systems with common beans (Phaseolus vulgaris), since it prevent B leaching. The aim of this work was evaluate the economic viability and physiological parameters production using sources increasing foliar doses. A field experiment carried out an experimental block design factorial scheme 2 × 5 3, two (boric acid borax) five doses: 0 (control), 2, 4, 6 e 8 kg ha−1, three repetitions. applications were...

The rubber tree crop (Hevea brasiliensis) is raw material used for the production of rubber.However, Brazilian accounts only a third demand, resulting in large cultivation areas concomitantly concerned with aspects related to system.Hence, this study aims evaluate effects potassium fertilization on growth, nutrition and dry matter Hevea brasiliensis seedlings up 35 days after planting.Potassium rates were 0 (control), 0.25, 0.5, 0.75 1 kg m -3 K 2 O soil.Biometric evaluations such as...

Soy is to one of the main crops in world. However, there are aspects related its management that should be explained, especially regarding mineral nutrition, because a proper nutritional balance associated with productivity levels. The objective this study was evaluate accumulation nutrients tissues deficiency and effects on plant development. In addition, disorder symptoms were evaluated according macronutrients. For this, seven treatments evaluated. They comprised complete nutrient...

Plinthite and petroplinthite occur frequently in Brazilian soils, but there is little information on the behavior of these materials. The aim present study was to assess effect different drying periods hardening stability plinthic materials soils floodplain Araguaia River João Leite stream Goiás. Soil samples were collected, with aid 0.10 m high 0.15 diameter PVC cylinders, directly from horizons five profiles Plintossolos Argilúvicos (Plinthosols). soil matrix subsamples obtained samples....

Some aspects of the micronutrients management in common bean under boron fertilization tropical agroecosystems are still poorly understood. The aim this work was to evaluate physiological quality and grain production using different B sources dose applications, cultivated irrigated system. experimental design a randomized block, factorial scheme 2 x 5 3, with two (boric acid containing 17% applied leaves FTE (fritted trace elements) BR-12 including 1.8% B, on soil) five doses each source: 0...

Although ferruginous materials occur frequently in soils of tropical regions, information about the reversal hardening process these is scarce. This study assessed influence different chemical treatments and periods immersion on reversibility plinthite petroplinthite Araguaia River plain. Soil samples were collected from plinthic horizons 0.10 m high 0.15 diameter PVC cylinders divided into subsamples with a rock hammer. Homogeneous also broken The subjected to five treatments: distilled...

Records of changes in the phytosociological structure vegetation can be observed more clearly soils that have significant accumulation organic matter, like those occurring high-mountain environments. The aim this study was to characterize formed environments Itatiaia National Park (INP), state Rio de Janeiro, southeastern Brazil, and discuss potential preserved phytoliths as markers vegetative history environmental factors. Four profiles were selected, which morphologically described...

O objetivo desse estudo é comparar imagens de satélite RapidEye, corrigida e não corrigida, classificar a cobertura uso da terra do município Pinheiral, Rio Janeiro. Foi utilizado o modelo 6S (Second Simulation of Satellite Signal in the Solar Spectrum) para correção das imagens, em seguida realizada caracterização terra, partir índices vegetação por diferença normalizada (NDVI) ajustado ao solo (SAVI). Assim, recomenda-se atmosférica baseada na transferência radioativa, melhorando acurácia...

RESUMO A avaliação integrada dos atributos físicos, estoque de carbono (EstC) e nitrogênio (EstN) além da abundância natural δ13C do solo se mostram eficazes na detecção mudanças ocorridas paisagem. Portanto, o objetivo deste estudo foi avaliar comparar a densidade solo, EstC, EstN em perfis diferentes fitofisionomias Estação Ecológica Pirapitinga – EEP visando elucidar as nesse ambiente. Para isso, foram coletadas analisadas amostras terra profundidade até um metro nas EEP. Os maiores...

The Cerrado is a vegetation complex with wide variety of phytophysiognomies, and sustainable management essential for maintaining biodiversity. Morphopedology tool that can assist in developing plans control soil land use, especially evaluating the potential erosion processes. This technique allows landscape units considered “homogeneous” to be distinguished, as result interaction between physiographic conditions. aim this study was evaluate São Miguel do Araguaia, state Goiás, Brazil,...

The knowledge of nutritional requirements beans, the efficiency soil acidity correction and fertilization programs are essential to increase productivity.The Integrated Recommendation Diagnosis System (DRIS) assists with diagnosis cultivated plants based on existing interactions between nutrients hierarchizing limitations.This study aimed at establishing standards using DRIS method for areas production irrigated common beans determining most limiting factors leaf analyses interpreted by...

The manganese (Mn) is an important nutrient to forage development; however, there a lack of information regarding adequate Mn-fertilizer rates for Guinea Grass (Panicum maximum) species growing in Brazilian soils.The objective this research was evaluate the effect Mn on growth, nutrition and yield Grass.The study carried out under greenhouse conditions randomized block design, with five (0, 15, 30, 60 120 mg dm -3 ) four replicates, using sulfate (35.5% Mn) as source.Plant's growth...

The global cycle of carbon (C) has raised attention in recent decades due to the great increase dioxide levels (CO2) atmosphere and its influence on climate change. Calcareous soils represent a significant fraction areas with potential for agriculture have differential attributes, such as high calcium contents, magnesium, carbonates, pH values. These attributes been ignored analytical procedures despite these characteristics, resulting an overestimation or underestimation soil carbon....

Abstract The formation of strongly weathered soils the tropics (Ferralsols) with high carbon stocks (thick A‐horizon/umbric horizon) is still not understood. In order to contribute understanding Umbric Ferralsols, we studied these in highlands Rio de Janeiro state (Brazil) from various perspectives. We analysed soil morphology, micromorphology, physical and chemical attributes, phytolith assemblages, δ 13 C isotopic composition a multi‐proxy study. profiles presented ferralic horizons SiO 2...

Soil evolves in landscapes a natural process which soil properties are gradually transformed. However, the transformation of argic to ferralic horizons basic rock-derived soils under tropical conditions is poorly understood. Depending on position profiles landscape, evidence pedogenetic between different might indicate formation and destruction aggregates with shiny faces. This study aimed determine changes toposequence, because derived from [...]

Sugarcane may be a potential feed source for ruminants in tropical and subtropical areas. An important factor that can influence the nutritional quality of sugarcane animal feeding is nitrogen fertilization management, however, studies on this subject are still scarce. In context, objective study was to evaluate effect sources productivity as forage resource. The variety used RB92579, with application (N) (urea, poultry litter, swine manure) control (without N application). Stalk dry matter,...