Martinez Herminia Emilia Prieto

Universidade Federal de Viçosa (UFV) | UFV · Department of Crop Science

Eucalyptus accumulates large amounts of nutrients in its biomass and, in order to maintain high productivities, high doses of fertilizers are applied, mainly potassium. Adequate fertilization management requires information on nutrient contents in the various plant organs. This study aimed to use the boundary-line (BL) method to determine curves of...

Calcium (Ca) is one of the main problems in tomato management, due to its susceptibility to physiological disorders such as blosson end rot. This study aimed to evaluate the effects of Ca doses on the anatomy, biometry and nutritional status of cherry tomato hybrid BRS Iracema cultivated in a hydroponic system. The experiment consisted of an arrang...

This research aims to evaluate the impact of nitrogen deprivation and water stress on gas exchange and chlorophyll fluorescence in young plants of five cultivars of Arabic coffee. A factorial experiment 5 (cultivars) × 3 (treatments: control without stress, water stress of −1.5 MPa and stress of N – 0.0 mmol L⁻¹ N) was carried out in a complete ran...

The adoption of more productive and nutrient-demanding genotypes, in addition soils with low availability of nutrients of soils under forest plantations, lead high fertilizer demand and justify research that seeks to rationalize the use of these inputs. Therefore, we aimed with this research to determine classes of interpretation of soil fertility...

Studies evaluating the influence of nutrients on plant anatomy are very important because nutritional deficiencies can alter the thickness and shape of certain tissues, compromising their functionality what can explain the reduction of productivity. The aim of this study was to characterize the anatomical changes in cherry tomato plants subjected t...

Boron is one of the most limiting micronutrients to the good development and production of tomato, and the damage intensity varies with the cultivars, their phenological stages and the environmental conditions. The aim of this work was to evaluate the effects of boron concentrations in nutrient solution on agronomic performance and possible morpho-...

Boron (B) retranslocation may confer greater tolerance to B deficiency or toxicity, resulting in plants and fruits with better nutritional quality. Most plants do not demonstrate phloem mobility for B; however, some plants have natural mobility and others express it under stress conditions, such as nutritional stress. Therefore, we investigated the...

The crop response and characteristics of soil solution (SS) change depending on the dose and fertilizer type used. This research determined the growth and yield of the broccoli and changes of the SS to identify the effect of the dose and fertilizer type used for the crop nutrition. Mineral fertilizer (MF) in 200% of the recommended dose (MF200), 10...

Boron is one of the micronutrients that mostly limits crop yield in Brazil, especially for tomato. When boron is deficient, there is initially growth reduction in meristematic tissues (root ends and branches), although for tomato, this behavior has not yet been characterized. The aim of this work was to characterize the effects of boron deficiency...

Potassium (K) is one of the most abundant nutrient and has the greatest influence on fruit quality as it regulates the synthesis and translocation of photoassimilates in plants. K deficiency in tomato plants can compromise the quality and flavor of fruits. Thus, the objective of this work was to evaluate the effect of K doses on the production and...

Tomato is one of the most popular vegetables, with high nutrient demand. The nutrient concentration can vary depending on the development phase, cultivation system, temperature, soil conditions, luminosity, relative humidity and management practices. The aim of this work was to characterize cherry tomato visual symptoms of deficiency, as well as th...

Potassium has a great impact on plant growth. It regulates synthesis reactions and participates in the translocation of photoassimilates, cell elongation, and enzymatic reactions related to photosynthesis, respiration, synthesis of starches, proteins, and lignin. The objective of this study was to characterize the growth of cherry tomato in hydropo...

Up to now, there has not been any research that has tried to establish nitrogen (N) status diagnosis in basic seed potatoes, propagated by sprout in a three-phase hydroponic system. The objective of this study was to develop a potential index to be used in the diagnosis of N status in potato, using a three-phase hydroponic system, with the potato c...

In hydroponics, nutrient management is the limiting factor to obtaining optimal production, and nitrogen (N) is the key component to consider when optimizing nutrient management in these types of systems. The objective of this study is to evaluate different combinations of N fertilizer concentrations in order to optimize the yield of basic seed pot...

The adequate supply of nitrogen to coffee plantation is one of the main challenges of organic agriculture. The aim of the present study was to evaluate the effect of organic fertilization with two legume species in different intercropping periods on nitrogen nutrition, initial growth and productivity of coffee plantation. The experimental design wa...

The knowledge about the rate of decomposition and nitrogen mineralization of green manures provides synchronization with the higher absorption stage by the coffee tree. The rate of decomposition and nitrogen mineralization varies according to the species of green manure and with the environmental factors. The aim of the present study was to evaluat...

How to cite: Sousa JS, Neves JCL, Martinez HEP, Alvarez V VH. Relationship between coffee leaf analysis and soil chemical analysis. Rev Bras Cienc Solo. 2018;42:e0170109.

Micronutrients perform specific and essential functions in plant metabolism, and their deficiency may lead to metabolic disturbances that affect coffee production and quality beverage. In Brazil, the B, Cu, and Zn are the main micronutrients, and these are provided by soil or foliar fertilization, frequently with low recovery efficiency. This work...

Zinc is essential for the synthesis of amino acids, carbohydrates, and proteins, which are directly related to the chemical composition of raw coffee (Coffea arabica L.) beans, and it may influence the quality of the beverage. This study aimed at evaluating the influence of Zn doses on the chemical composition of coffee beans and beverage quality....

The objective of this work was to evaluate the effect of copper on the chemical composition of coffee beans and on the quality of the beverage, relating both of them to the Cu leaf contents in coffee (Coffea arabica) plants. Coffee plants were grown in a hydroponic system containing 0.2, 0.4, 0.8, 1.6, and 3.2 μmol L-1 Cu until fruit setting. Coffe...

Brazil is the fourth largest grain producer in the world. Its agriculture is mainly rainfed, with two cropping seasons per year. While the first crop (i.e., spring/summer) receives greater precipitation, the second crop (i.e., autumn/winter) is associated with greater risk of crop failure mainly due to the low rainfall, suggesting that technologies...

The macaw palm [Acrocomia aculeata (Jacq.) Lood. ex Mart] has been domesticated to subsidize biodiesel production programs in Brazil. However, little is known about the seedling production of this species. This study aimed to evaluate substrate mixtures, limestone and phosphorus rates for substrate amendment and topdressing frequency in macaw palm...

A exploração econômica da macaúba [Acrocomia aculeata (Jacq.) Lodd. ex Mart.] está passando por processo de transição do extrativismo para cultivos agronômicos, o que requer estudos com adubação para a cultura. Objetivaram-se avaliar a resposta de três acessos de macaúba a doses crescentes de nitrogênio e potássio, cultivados até o segundo ano no c...

The ratio of nitrogen (N) to potassium (K) is important in the production of specialty coffees because the relative amounts of N and K can either suppress the formation or increase the concentration of compounds that are essential to the flavor and aroma of specialty coffees. The purpose of this study was to evaluate the effect of different N:K rat...

The vegetative propagation of ornamental plants can be accelerated by applying plant growth regulators. Amongst them, the use of auxins, plant hormones with physiological effects on cell elongation and rooting have stood out. Alternatively, the application of humic acids, bioactive fraction of soil organic matter, also results in increases in rooti...

In Brazil there are two usual forms of supplying zinc (Zn) to coffee plants, in the soil with macronutrient fertilizers or by means of foliar sprayings. Both have limitations that compromise the Zn availability to the plant. This study examined the plant responses to the foliar sprays with ZnSO4 and insertion of Zn salt tablets, made with a mix of...

O potássio constitui uma fonte de recurso natural não renovável, e é utilizado em grandes quantidades nas adubações cafeeiras, por meio de formulações, basicamente, importadas na forma de cloreto de potássio. Uma alternativa para tornar os sistemas de produção mais sustentáveis seria a obtenção de cultivares mais eficientes no uso desse nutriente....

In a hydroponic system of production, the knowledge of the requirements of the plants improves the conditions for growth and development. For the success of this system, the knowledge of composition of the nutrient solution is crucial, which depends not only on the concentration and relationship between nutrients, but also on factors related to the...

Os nutrientes minerais interferem na qualidade final do café por duas vias, uma direta, por seu papel no metabolismo da planta e acúmulo de compostos químicos desejáveis, do ponto de vista do aroma e sabor do café, e, outra, indireta, por seu papel na produção de compostos que desfavorecem o desenvolvimento microbiano nos grãos. Neste trabalho, pro...

This paper evaluates the effects of the period of intercropping of hyacinth beans (Dolichos lab-lab) and jack beans (Canavalia ensiformis) on coffee (Coffea arabica) growth and productivity. The treatments were the two legume species combined in a factorial design with four intercropping periods (30, 60, 90 e 120 days after planting). The control t...

Jatropha curcas L. belongs to the Euphorbiaceae family. It is an oleaginousplant and it has received much attention because of the production of biofuels. The objective of this study was to evaluate the nutritional status of Jatropha curcas under deficiency of macro and micronutrients in nutrient solution. The experimental design was completely ran...

Inconclusive responses of the adult coffee plant to phosphorus fertilization have been reported in the literature, especially when dealing with application of this nutrient in high density planting systems. Thus, this study was carried out for the purpose of assessing the response of adult coffee plants at high planting density in full production (...

Coffee-tree condensed plantings provide reduction in the loss of the soil nutrients by erosion, lixiviation and oxidation of the organic matter, and even increase nutrient recycling. This experiment aimed evaluates the influence of different spacing among rows on the nutrient foliar contents of coffee-tree varieties, and was performed in randomized...

RESUMO ñ Com o objetivo de comparar a umidade e a fertilidade do solo em sistemas de cafeeiro consorciado com nÌveis baixos de adubaÁªo e em cultivo convencional, foram testados os seguintes tratamentos: cafeeiro (Coffea arabica L.) a pleno sol; cafeeiro com fedegoso; cafeeiro com fedegoso e bananeira; cafeeiro com fedegoso, bananeira e ipŒ-preto,...

The aim of this study was to evaluate the growth and production of coffee tree and transfer of N from biomass legumes to coffee tree cropping without the interference of field consortium. Coffee trees were cultivated in pots, and after shoots of jack bean, enriched with 15N into the pots in greenhouse, at doses of 146 and 584 g plant-1, supplemente...

Information concerning the response of coffee to organic fertilizers is scarce. This study evaluates the effect of different doses of compost and Crotalaria juncea L. on growth, production and nitrogen nutrition of coffee trees. The treatments consisted of compost at rates of 25, 50, 75 and 100% of the recommended fertilization, with or without the...

Among micronutrients, zinc (Zn) is important for coffee tree cultivation, especially in the clayey acid soils of Brazil's southeast region, where coffee production is an important activity. This study aimed to evaluate the Zn use efficiency of coffee tree varieties using two zinc concentrations. Seedlings of 11 varieties of coffee trees were grown...

Studies on nutritional efficiency of phosphorus in conilon coffee plants are important tools to unravel the high limitation that natural low levels of this nutrient in soil impose to these species cultivars. Therefore, this study aimed at evaluating the nutritional efficiency and the response to phosphorus of conilon coffee clones. Plants were mana...

O suprimento adequado de nutrientes ao cafeeiro é essencial para obtenção de alta produtividade. O objetivo deste trabalho foi avaliar o efeito do nitrogênio, do potássio e da relação N:K no crescimento vegetativo e reprodutivo do cafeeiro. Para isto, plantas de café receberam solução nutritiva, contendo K nas concentrações de 1,08; 2,15; 3,23 e 5,...

Besides its importance in the coffee tree nutrition, there is almost no information relating zinc nutrition and bean quality. This work evaluatedthe effect of zinc on the coffee yield and bean quality. The experiment wasconducted with Coffea arabica L. in "Zona da Mata" region, Minas Gerais, Brazil. Twelve plots were established at random with 4 co...

The objective of this work was to evaluate the effect of N and K fertilization on the yield and production bienniality of dense coffee plantations, in a long‑term study. Two experiments were evaluated in the Zona da Mata region of Minas Gerais, Brazil, under a randomized complete block design, split‑plotted in time. In the first experiment, carried...

http://dx.doi.org/10.5007/2175-7925.2013v26n1p37 O tomate cereja (Solanum lycopersicum) é altamente exigente em relação aos nutrientes minerais. O uso do esterco animal mostra-se uma forma eficiente e sustentável de adubação para essa cultura. O objetivo deste trabalho foi avaliar o efeito de diferentes doses de esterco bovino no crescimento veget...

Providing zinc to coffee plants interferes with the growth, development and productivity, and coffee varieties differ in their responses to nutrient availability in soil. This study aimed to identify the differential tolerance of cultivars of Coffea arabica to the lack of Zn, verify how does the partition of zinc contents occur in the plant organs...

This study evaluated the tolerance of mango cultivars 'Haden', 'Palmer', 'Tommy Atkins' and 'Uba' grafted on rootstock 'Imbú' to salt stress using chlorophyll fluorescence. Plants were grown in modified Hoagland solution containing 0, 15, 30, and 45 mmol L-1 NaCl. At 97 days the parameters of the chlorophyll fluorescence (F0, Fm, Fv, F0/Fm, Fv/Fm,...

A dose ótima de nitrogênio (N) na cultura da batata depende do sistema de produção. O objetivo deste trabalho foi determinar a dose ótima de N para a produção de minitubérculos de batata-semente básica e avaliar o efeito de doses de N sobre índices nitrogenados e fisiológicos determinados na folha mais jovem completamente desenvolvida (quarta folha...

The identification of genetic material tolerant to aluminum (Al) can offer important advantages to breeding programs and to recommendations for cultivars with the aim of utilizing acidic soil. Based on this, our aim was to determine, by using the solution-paper method, the aluminum concentration that best demonstrates tolerance of Jatropha accessio...

Adventitious rooting of ornamental plants can be accelerated by the application of growth regulators, such as auxin. Humic acids, organic matter in soil and organic compounds also have a biostimulant effect. This work evaluated the rooting in cuttings of croton (Codianeum variegatum L. Rumph) and hibiscus (Hibiscus rosa-sinensis L) in response to t...

In recent years, the application of silicon (Si) in crops, including coffee, has become a common practice. The objective of this study was to assess the silicon uptake by coffee seedlings and its effects on plant growth, water and macro and micronutrient uptake. The research was conducted using nutrient solution in a greenhouse at the Departamento...

Phytochemicals may modify the food quality, reduce a plant's palatability to insects, or defend against pests. This work aimed to study 1) relationships between the nitrogen and potassium levels given to plants in nutritive solutions and the foliar phytochemical concentrations, 2) the effect of nutrients and secondary compounds of Coffea arabica on...

The effect of salt stress on the dry mass, absorption and transport of nutrients was evaluated in mango cultivars 'Haden', 'Palmer', 'Tommy Atkins', and 'Ubá' grafted on rootstock 'Imbu'. Plants were grown in modified Hoagland solution in aired static hydroponic system containing 0, 15, 30, and 45 mmol L-1 NaCl. The dry mass of the roots, the stem...

Social Vespidae exhibit control of Leucoptera coffeella (Lepidoptera: Lyo-netiidae) in Brazil. The objective was to determine the ideal unit for sampling of predaceous Vespidae in coffee crops in the vegetative and reproductive phases. This research was conducted in two coffee plantations in Viçosa, MG. The factors being studied were: crop phase, c...

The objective of this work was to evaluate the quality of fruits and the nutritional status of cucumber CV. Aodai cultivated in nutrient solutions with different N:K ratios. The hydroponic cultivation was initially performed, during the vegetative growth, in nutrient solution with 1:2.0 mmol L-1 N:K, and, later, during fruit setting, in four differ...

In Brazil, the usual forms of zinc (Zn) supply to coffee plants have limitations that compromise the element availability to the plant. This study proposes to test an alternative approach to supplying the nutrient to Coffea arabica L. using trunk implanted zinc tablets. Additionally, the effect of Zn on the production and quality of coffee beans wa...

The tolerance of different coffee-plant progenies to zinc (Zn) deficiency was studied in a green house experiment arranged in a completely randomized design, in a 14 × 2 factorial scheme (14 progenies and two Zn concentrations), with four replications. Coffee-plant seedlings were grown for ten months in nutritive solution with or without Zn. There...

Elucidar as diferenças nas exigências nutricionais entre as cultivares é uma forma de obter maior produtividade e otimizar o uso de fertilizantes. Este trabalho teve por objetivo avaliar a eficiência na produção de raiz e parte aérea por unidade absorvida de N, P, K, Ca, Mg, S, B, Cu e Zn em quatro cultivares de cafeeiro arábico ('Acaiá IAC-474-19'...

Studying nutritional efficiency of grafted coffee plants is important for the selection of graft/ rootstock combinations, aiming to achieve better plant development and yield. The objective of this work was to evaluate the genetic differences for B, Zn, Cu and Mn absorption and utilization efficiencies of grafted coffee seedlings. The experiment wa...

To elucidate the differences in the nutritional requirements among the cultivated varieties of plant species is a form of obtaining higher productivity and to optimize the fertilizer use. This work had as objective to evaluate the root and shoot production efficiency of four arabic coffee cultivars ('Acaiá IAC 474-19', 'Icatú Amarelo IAC-3282', 'Ru...

This research was accomplished in the research unit of the Irrigâmetro ®, Department of Agricultural Engineering at Federal University of Viçosa, in Viçosa, Minas Gerais State, Brazil. Two experiments were carried out with the grassbatatais (Paspalum notatum Flugge), one of them used minilysimeters and the other one used lysimeters both with consta...

The effect of rootstocks on vegetative growth and yield of coffee plants (C. arabica) were evaluated under field condition at Paulo Cândio, Minas Gerais State, Brazil. It was tested four genotypes of C. arabica as grafts the varieties Catuaí Vermelho IAC 15 and Oeiras MG 6851 and the progenies H 419-10-3-1-5, H 514- 5-5-3 and three genotypes of C....

Este trabalho foi desenvolvido na Unidade de Pesquisa do Irrigâmetro®, pertencente a Universidade Federal de Viçosa, na Viçosa, Estado de Minas Gerais, Brasil. Dois experimentos foram conduzidos com grama-batatais (Paspalum Notatum Flugge), sendo um com minilisímetros e outro com lisímetros, ambos com lençol freático constante e operando com Irrigâ...

It is difficult to separate the effects of light reduction versus nutrient and water competition in agroforestry systems. The objective of this experiment was to evaluate the effect of shading and fertilizer supply on the vegetative development and yield of Coffea arabica over six years. The coffee trees were covered with shade screens (photosynthe...