Teor de zinco no café como variável da disponibilidade no solo e extrator

Favarin, José Laércio; Vitti, Godofredo César; Neto, Durval Dourado; Salgado, Paula Rodrigues

doi:10.1590/s0100-06832007000500034

Cited by 5 publications

(5 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…On the other hand, the results obtained from a study of Favarin et al (2007) where Zn was applied for Coffea arabica L. and C. canephora L., show a maximum yield of RDW at lower levels of soil Zn than those observed for the maximum production of the SHDW, unlike the results obtained in this study. It must be pointed out that many reported studies on soil Zn levels calibration do not present granulometric analysis of soils or any other estimates relating to the Zn buffering capacity, a factor that makes it difficult to compare results of different studies.…”

Section: Resultscontrasting

confidence: 99%

Growth and Nutrition of Cacao Seedlings Influenced by Zinc Aplication in Soil

et al. 2015

View full text Add to dashboard Cite

-Levels of Zn in tropical soils profoundly influences growth and nutrition of tree crops. Research was undertaken to assess the effect of soil Zn on growth and nutrition of clonal cacao tree seedlings of PH 16. Three acidic Oxisol soils differing in texture were used with nine doses of Zn (0, 1, 2, 4, 8, 16, 32, 48, ). Rooted clonal seedlings were grown in plastic pot with 11 dm -3 of the soils at varying Zn levels for 240 days. At harvest growth (dry matter mass of leaves, stems, shoots, roots, and total) and nutrient concentrations were determined. The clonal cacao seedlings showed differences for production of dry matter mass and foliar nutrient concentrations for P, K, Ca, Mg, Mn, Fe, Zn, and Cu. There was Zn toxicity in all soils. Index terms: Theobroma cacao L., micronutrient, calibration fertilization. -3 dos solos com níveis variáveis de Zn, por 240 dias. Na colheita, o crescimento (massa de matéria seca de folhas, caules, brotos, raízes e total) e os teores de macro e micronutrientes foram determinados. As mudas clonais de cacau apresentaram diferenças para a produção de massa de matéria seca e teores de nutrientes foliares para P, K, Ca, Mg, Mn, Fe, Zn e Cu. Houve toxidez de Zn em todos os solos. Termos para indexação: Theobroma cacao L., micronutriente, calibração de adubação. CRESCIMENTO E NUTRIÇÃO DE MUDAS DE

show abstract

Section: Resultscontrasting

confidence: 99%

Growth and Nutrition of Cacao Seedlings Influenced by Zinc Aplication in Soil

et al. 2015

View full text Add to dashboard Cite

show abstract

“…Studies investigating the growth and development of conilon coffee have revealed genetic variability in leaf number, plant height, emission rate of reproductive branches, root and shoot dry matter, and nutrient accumulation (Contarato et al, 2010;Covre et al, 2013;Partelli et al, 2014b;Marré et al, 2015;Ronchi et al, 2015). Additionally, some studies have shown variation related to nutrient-use efficiency among conilon genotypes (Favarin et al, 2007;Tomaz et al, 2009;Ferreira et al, 2013) and different nutritional requirements according to fruit ripeness stage and time of the year (Marré et al, 2015). In this context, the use of tools that can identify genetic diversity, such as hierarchical genetic clustering methods (multivariate methods), can aid in the identification of C. canephora genotypes with different genetic distances (Kathurima et al, 2012;Souza et al, 2013;Dalcomo et al, 2015;Martins et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

Genetic diversity of standard leaf nutrients in Coffea canephora genotypes during phenological phases

et al. 2016

View full text Add to dashboard Cite

Diagnosing foliar nutritional status is essential for fertilizer recommendations and for the identification of nutrient imbalances. This study aimed to verify genetic diversity and establish mean standards (leaf nutrient contents; LNCs) and relationships among leaf nutrients (LNC relationships; LNCRs) in seven conilon coffee genotypes during both pre-flowering and bean-filling stages. Twenty crops from several cities in the northern region of Espírito Santo State, Brazil, with crop yield either equal to or greater than 100 bags per hectare (during two harvests) were assessed. A total of 140 samples were collected during each evaluation period for quantification of leaf nutrient contents (N, P, K, Ca, Mg, S, Fe, Zn, Cu, Mn, and B). The Ward procedure, a hierarchical genetic clustering method, was used to quantify the genetic diversity among genotypes. To examine differences between the LNCs and LNCRs, F-and Scott-Knott tests were used. LNCs and LNCRs showed significant differences among the conilon coffee genotypes during the evaluation periods. Additionally, the 8V, 10V,and 12V genotypes exhibited the highest values for most of the nutrients, especially for N, P, and Cu. Therefore, the clustering method revealed genetic diversity among genotypes for standard leaf nutrient levels, implying that leaf diagnosis could be specific to each genotype and phenological stage.

show abstract

“…Acredita-se que, além de conferir resistência aos fitonematoides, a utilização do porta-enxerto na cafeicultura pode melhorar a eficiência no uso de nutrientes (Favarin et al, 2007), conferindo maior adaptabilidade às condições adversas de solo e áreas com precipitação pluviométrica limitada, por um sistema radicular mais desenvolvido e eficiente, aumentando com isso o potencial produtivo da planta enxertada.…”

Section: Introductionunclassified

Dinâmica dos micronutrientes em cafeeiros enxertados

et al. 2013

View full text Add to dashboard Cite

Dynamics of micronutrient in grafted coffeeResponses to availability of nutrients vary between different species within the same genus, mainly because the different nutritional requirements, absorption capacity, translocation and use of nutrients, The purpose of this study was to evaluate the efficiency of absorption, translocation and use of micronutrients by different cultivars of Coffea arabica L. grafted into Apoatã IAC 2258 (Coffea canephora). The experiment was conducted in a greenhouse using cultivation in nutrient solution in a 7 x 3 + 2 factorial design: seven cultivars of Coffea arabica L. (Palma II, Catucaí 2 SL, Oeiras MG 6851, Obatã IAC 1669-20, Acauã, Topázio MG 1190 and Paraíso MG H 419-1), three types of seedlings (ungrafted, self-grafted and grafted on cultivar Apoatã IAC 2258) and two controls (Apoatã self-grafted and Apoatã foot-free). The results showed that the rootstocknegatively influenced the absorption of boron, iron and manganese. The translocation of the micronutrients boron and copper had the highest rates in the grafted seedlings. The cultivar Palma II, when grafted, showed the highest rates of use of nutrients, showing that it can be grafted. The rootstock proved to be suitable for grafting, for not being negatively influenced by both the grafting and the cultivars used. Dinâmica dos micronutrientes em cafeeiros enxertadosAs respostas à disponibilidade dos nutrientes variam entre espécies distintas dentro de um mesmo gênero, por causa, principalmente, das exigências nutricionais variáveis, capacidade de absorção, translocação e utilização dos nutrientes. O objetivo deste trabalho foi avaliar a eficiência de absorção, translocação e uso dos micronutrientes por diferentes cultivares de Coffea arabica L., enxertados em Apoatã IAC 2258 (Coffea canephora). O experimento foi instalado em casa de vegetação, utilizando-se o método de cultivo em solução nutritiva. Foi utilizado um fatorial 7 x 3 + 2, sendo sete cultivares de Coffea arabica L. (Palma II, Catucaí 2 SL, Oeiras MG 6851, Obatã IAC 1669-20, Acauã, Topázio MG 1190 e Paraíso MG H 419-1), três tipos de mudas (pé franco, autoenxertada e enxertada sobre o cultivar Apoatã IAC 2258) e duas testemunhas (Apoatã autoenxertado e Apoatã pé franco). O porta-enxerto utilizado influenciou negativamente na absorção de boro, ferro e manganês. A translocação dos micronutrientes boro e cobre obteve maiores índices nas mudas enxertadas. O cultivar Palma II, quando enxertado, apresentou o maior índice de utilização dos nutrientes, mostrando-se passível de ser enxertado. O porta-enxerto utilizado mostrou-se apto para a enxertia, por não sofrer influência negativa, tanto pela enxertia, quanto pelos cultivares utilizados. Palavras-chave:Coffea arabica L, Coffea canephora, enxertia, nutrição.

show abstract

Teor de zinco no café como variável da disponibilidade no solo e extrator

Cited by 5 publications

References 0 publications

Growth and Nutrition of Cacao Seedlings Influenced by Zinc Aplication in Soil

Growth and Nutrition of Cacao Seedlings Influenced by Zinc Aplication in Soil

Genetic diversity of standard leaf nutrients in Coffea canephora genotypes during phenological phases

Dinâmica dos micronutrientes em cafeeiros enxertados

Contact Info

Product

Resources

About