Iron (Fe) is an essential micronutrient for plants, as a cofactor in multi-heme cytochromes and within iron-sulfur clusters. However, Fe can be toxic at high concentrations. Free cells disrupt the cell redox balance toward pro-oxidant state, generating oxidative stress. The focuses of this review were to elucidate detoxification strategies used by well describe excess effects on plant body its impact physiological, morphological metabolic traits. Therefore, we highlight importance evaluating...

The use of nickel (Ni) as a fertilizer remains topic debate, particularly in non-legume species, Ni is required only trace amounts for optimal plant function. Urea application plants, whether foliar or root-based, relies on the urease enzyme to convert urea into NH4+ and CO2, with serving an essential cofactor. In this study, we conducted experiment using 2 × factorial design, combining two concentrations [4% 8% (w/v)] absence presence (0.3 g L−1 supplied NiSO4·6H2O). Gas exchange parameters...

This study evaluated the nutritional quality, yield, and storage protein modulation in soybean grains response to levels sources of sulfur (S) a dystrophic Ultisol. We used five S (0, 50, 100, 150 200 mg kg –1 ) four (elemental pastille - ESPA, gypsum GY, gypsite GI elemental powder ESPO). Plants treated with 50 GI, ESPO ESPA had largest grain yield values. Low supply resulted lower yields for all tested. Sulfur deficiencies were observed at resulting concentrations globulin higher...

Plant-growth-promoting bacteria can be used for sustainable forage grass production while increasing nutrition and biomass. Most of the soils under pasture in tropics have a degradation level that impairs yield potential, especially because mismanagement lack fertilization. The objective this work was to evaluate seed inoculation effects Azospirillum brasilense on shoot root dry mass nutritional status Urochloa brizantha cv. 'Marandu' field conditions two years low-fertility soil....

Sweet potato [Ipomoea batatas (L.) Lam.] has wide adaptability to different climatic conditions. However, its yield can be affected by prolonged periods of drought. Application exogenous jasmonates modulate several physiological and biochemical processes, improving plant tolerance abiotic stress. This study sought evaluate the role application methyl jasmonate (MeJA) in attenuating adverse effects drought stress physiobiochemical analyses their impact during early initiation tuberous roots....

Selenium (Se) is considered a beneficial chemical element for plants, but in high concentrations it may present symptoms of toxicity. The study aimed to evaluate 11 Se (0; 0.1; 0.5; 1; 5; 10; 20; 40; 80; 400; 800 mg.L-1) determine the low and (toxicity) critical levels seed germination cowpea (Vigna unguiculata). In addition, alterations rate photosynthetic pigments, lipid peroxidation sugars during initial growth development seedlings were analysed. Seeds exposed mg.L-1 showed decrease 20%...

Growth traits, yield, N content, photosynthetic pigments, ammonia and amino acids were measured to verify the effect of interaction between N, Ni, 2,4-D applied in cotton crop. The objective was study hormonal associated with application Ni coverage improve yield. (0, 40, 80, 120 kg ha-1) Ni(0, 300, 450, 600 g soil square phenological growth stage. commercial DMA® BR (0 1.8 a.e leaves at same supply cover fertilization up ha-1 beneficial for cotton, providing greater yield content pigments....

Soil contamination by boron (B) occurs in different ways, such as through mineral fertilisers and irrigation, surface waters it has increased significantly over the years. It is an important element for plants, participating several physiological processes. This work aimed to evaluate behaviour of Crotalaria juncea, widely used green manure. The species that tolerates B up a dose 60 mg dm−3 capacity phytoremediate classified phytostabilizer. clear 120 harmful growth species.

Sulfur deficiency in soils has become a worldwide concern for agricultural production. This study aimed to evaluate the concequence of variable sulfur source and dosing on nutritional status production Piatã forage dystrophic Ultisol. The experiment was arranged completely randomized block design with four replications. 4 x 5 factorial treatments consisted sources (elemental pastilles [ESPA], gypsum [GY], gypsite [GI], elemental powder [ESPO]) five doses (0, 50, 100, 150. 200 mg kg-1)....

Currently eucalyptus is used as raw material in different industrial segments. The aim of this study was to evaluate the growth, development and ultrastructural parameters genetic materials. randomized block experiment carried out ten treatments five replicates, with materials: six hybrids:I-144; H-13; 110; NA-151; NA-189 (Eucalyptus urophilla S. T. Blake x Eucalyptus grandis W. Hill); Grancam 1277 Hill camaldulensis Dehnh.); four pure materials:0020 saligna Sm.); 0010 resinífera pellita F....

The objective of this work was to analyze the effect cotyledon loss at diff erent times initial bean growth. experimental design completely randomized in a factorial scheme 2x5, seedlings with zero and one cotyledon, interacting fi ve extraction stages: zero, one, two, four, six days after germination, replicates composed three seedlings. After 15 days, following parameters were evaluated: mean root shoot length; stem diameter; leaf area; total dry mass; phloem xylem thickness abaxial...

O sorgo sacarino e utilizado para diversos fins, incluindo a producao de graos, forragens destinadas alimentacao animal biocombustiveis. Este trabalho teve como objetivo avaliacao da influencia do acido salicilico no processo germinativo sementes tres cultivares sacarino, sem que as mesmas tenham sido submetidas aos processos pertinentes Regras Analise Sementes (RAS). delineamento experimental foi inteiramente casualizado em esquema fatorial 3x6, ou seja, sendo elas: BRS 506; 508; 509, seis...

Nos últimos anos tem sido crescente as pesquisas científicas de inovação e tecnologia agrícola a respeito da ação do campo magnético sob germinação desenvolvimento plantas. Diante exposto, esta pesquisa teve como objetivo avaliar o inicial mudas alface (Lactuca Sativa L.) com uso água tratada magneticamente não (controle). O experimento foi realizado em bandejas 120 células, sendo parcela constituída por 12 células 10 repetições, onde foram testados os tratamentos tratada. Foram realizadas...

Given the importance of viral, bacterial and fungal diseases in agriculture their impact on crop yields, this study evaluated leaf ultrastructural changes sugarcane varieties infected by these diseases, aiming to find morphological responses that may be associated decline yield. Three independent experiments were carried out with varieties. In three experiments, a randomised block design was used 10 replications. The treatments consisted following diseases: mosaic from infection variety...