Leaf-cutting ants present a significant challenge in tropical countries. Currently, these insects are often controlled using chemical granular baits. While granules cost-effective, they have notable drawbacks, particularly their...

Given the increase in crop yields and expansion of agriculture low fertility soils, deficiency micronutrients, such as iron, plants grown tropical soils has been observed. The aim this study was to evaluate Fe availability uptake by corn (Zea mays L.) 13 different at two depths. Iron extracted Mehlich-1, Mehlich-3, CaCl2 (Fe-CC) fractionated forms related (Feo) high (Fed) crystallinity pedogenic oxyhydroxides, organic matter (Fep) using ammonium oxalate, dithionite-citrate, sodium...

ABSTRACT The increase of the absorption efficiency boron (B) by plants is essential for increasing crop productivity. intercalation B in MgAl layered double hydroxides (LDHs) an alternative to evaluating how these materials can provide plants. In this work, a LDH intercalated with borate ions (Mg 2 Al-B-LDH) was synthesized constant pH coprecipitation method, and material produced evaluated as matrix storage source Mg Al-B-LDH characterized XRD, ATR-FTIR, TGA-DTA, specific surface area, pore...

Alginate microspheres containing layered double hydroxides intercalated with borate: reduction on boron leaching and increasing uptake by plants.

Alginate beads containing layered double hydroxide intercalated with borate: a new fertilizer to reduce boron leaching and increase plant uptake.

Although some studies on cover crops in grain production areas have been developed recent years, information succession to corn silage are still scarce.The objective of this study was evaluate the effect different accumulation nutrients and dry mass yield (DM) shoots plants area central region Minas Gerais.The experiment carried out two harvests: 2012/2013 2013/2014, which eigth treatments were used consisted six species (turnip, millet, B. ruzziziensis, decumbens, crotalaria sunflower),...

With demand increasing for phosphate recovery, a considerable share of current research is dedicated to elaborate multifunctional materials.In this way, the objective work was produce hybrid films from combination cellulose acetate (CA) biopolymer and magnesium aluminium layered double hydroxides (LDHs) investigate their performance recovery.In work, following materials were prepared characterized: LDH, calcinated LDH (LDH-c), CA film (CAF), with (CAF-LDH) LDH-c (CAF-LDH-c).The produced...

O molibdênio (Mo) está associado aos processos de metabolismo do nitrogênio (N) devido a sua participação na formação e atividade da redutase nitrato. A deficiência Mo pode acarretar também N, comprometendo o rendimento das culturas. Objetivou-se avaliar efeito doses produtividade milho concentração nutrientes nas folhas. Foi utilizado delineamento experimental em blocos casualizados com quatro repetições. Os tratamentos foram constituídos seis Mo: 0, 25, 105, 210, 315 420 g ha-1. Como fonte...

Layered double hydroxides intercalated with borate: reduction of boron leaching in sandy soil and increase plant uptake.

O estudo de caso foi feito com o objetivo comparar as metodologias amostragem solo por agricultura precisão (AP) e convencional (AC) para avaliação da fertilidade solos. Amostras foram obtidas AC AP em dez áreas cultivadas milho soja, forma rotacionada, uma propriedade localizada Inhaúma, região central do estado Minas Gerais. As amostras analisadas interpretadas recomendação corretivos fertilizantes cada das glebas. Comparando-se os dados médios entre dois métodos amostragem, observaram-se...

Bonechar presents high sorption capacity for mobile herbicides retained in soil and water. However, its use a granulated and/or powder form makes it difficult to remove The objective of this study was produce cellulose acetate film with bonechar as viable alternative metribuzin from treatments were composed 2 3 g fixed on film, pure bonechar, control (no bonechar). desorption carried out the equilibrium batch mode five concentrations (0.25, 0.33, 0.5, 1, mg L−1). water used experiment...

Vale do Rio Doce shoot dieback (VRDSD) is an anomaly whose cause seems to be associated with hypoxic conditions and their consequences (excess Mn Fe) triggered by elevation of the water table in areas poor drainage. Different plants have distinct survival strategies under this form stress. The objective study was understand physiological responses involved differential tolerance eucalyptus clones VRDSD relationship hypoxia excess Mn. A hydroponic experiment carried out using a 2 × factorial...

<title>Abstract</title> Insect pests such as leaf-cutting ants (genera <italic>Atta</italic> spp. and <italic>Acromyrmex</italic> spp.) are a major problem in tropical countries because they can cause significant damage to crops, resulting substantial production losses. These insects have been controlled chemically using granular baits. Although these granules cheap, pose some problems due their low resistance humidity. Therefore, developing new formulations that present environmental...

The bambara bean (Vigna subterranea (L.) Verdc.) is native to the African continent, being considered rustic, tolerant water stress, high temperatures, and soils with low fertility. In view of climate change, it's a strategic crop having short cycle fast economic return. practice mounding essential for crops that have parts interest below soil surface promoting better plant development, protection against solar radiation weed control. objective this work was evaluate phytotechnical aspects...

ABSTRACT Alternative materials can be used to reduce reliance on mining for P-based fertilizers. In this sense, the pyrolysis process of bovine bones produces “bone char”, which as a source P. This study aimed characterize bone char and conduct comparative analysis with both soluble (triple superphosphate) non-soluble (Bayóvar phosphate rock) fertilizers, specifically examining its behavior in soil uptake by plants. Bone characterization was performed X-ray diffraction (XRD), attenuated...

Irrigation water with high electrical conductivity (EC) compromises the sustainability of agricultural soils. Calcium sulfate (CS) or gypsum is commonly used on removal soluble ions such as sodium (Na), however, large applications CS can affect soil pH, EC, and nutrient availability to plants. The objective this study was investigate effects ammonium (AS) rates exchangeable cations in a salt-affected soil. Samples from 0-20 cm depth layer were collected an reported have low potato yield due...

The aim of this study was to evaluate the effect forms application and rates phosphate fertilizer on agronomic characteristics carrot. A field experiment carried out in a 2 × 7 factorial arrangement, consisting two P source (over whole area or specifically strip double row), seven P2O5 randomized blocks, with four replicates. Shoot dry matter yield increased linearly, root exponentially an increase rate. Total commercial yields exponentially, higher for over area. However, efficiency...

Irrigated agriculture has been showing considerable levels of evolution over the last few years, in addition to a relevant option for food production.Alternative methods and technologies have developed rational use water field be used also by small producers, with aim increasing productivity crops worldwide.It is known that proper management irrigation it necessary determine reference evapotranspiration, ETo.Evapotranspiration consists combined process heat transfer mass, form vapor, from...

Studies aimed at mitigating environmental impacts have received attention in recent years. The use of biochar obtained from the pyrolysis is an alternative for recovery organic materials that usually are directly discarded environment. Biochar has potential to recover nutrients wastewater, and latter case, reuse or recycling as a controlled-release fertilizer could be option. However, adsorption characteristics ions into different biochars not been known. aim this study was evaluate derived...

Atualmente a agricultura moderna tem buscado incorporar novas tecnologias que visem redução de custos, com otimização mão-de-obra e maior rendimento operacional. Nesse aspecto, adubação antecipada lanço sido praticada por um número crescente produtores apresentada alguns pesquisadores como uma alternativa viável para melhorar o operacional trazer economia ao produtor. Embora aumentado aplicação fósforo (P) em diversas culturas anuais, preocupa-se tal situação devido à baixa mobilidade desse...