Doutorado em Agronomia
URI Permanente para esta coleção
Nível: Doutorado Acadêmico
Ano de início: 2010
Conceito atual na CAPES: 4
Ato normativo: Doutorado - Reconhecido Port. MEC 609, de 14/03/2019, DOU 18/03/2019, parecer 487/2018).
Periodicidade de seleção: Semestral
Área(s) de concentração: Produção Vegetal
Url do curso: https://producaovegetal.ufes.br/pt-br/pos-graduacao/PPGA/detalhes-do-curso?id=1440
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- ItemFertirrigação do cafeeiro conilon: produtividade e atributos químicos do solo(Universidade Federal do Espírito Santo, 2023-03-01) Ribeiro, Wilian Rodrigues; Reis, Edvaldo Fialho dos; https://orcid.org/0000000338231472; http://lattes.cnpq.br/2317496014692033; https://orcid.org/0000000307117669; http://lattes.cnpq.br/4171792393239987; Garcia, Giovanni de Oliveira; https://orcid.org/0000000313269909; http://lattes.cnpq.br/6763740612916491; Rangel, Otacilio José Passos; https://orcid.org/0000-0002-1539-6533; http://lattes.cnpq.br/7212423450267908; Tomaz, Marcelo Antonio; https://orcid.org/0000000253070219; http://lattes.cnpq.br/7116075671588859; Venancio, Luan PeroniIncreasing efficiency in the use of water and inputs are among the main challenges for the development of more productive and ecologically sustainable agricultural systems. For this, the objective of this study was to evaluate changes in soil chemical attributes and productivity of conilon coffee trees submitted to different doses of fertilization and forms of fertilizer application, seeking to generate knowledge bases for directing recommendations considering the current model of cultivation. The experiment was installed in a Coffea canephora crop located in the municipality of Muniz Freire, in the southern region of the state of Espírito Santo, at an altitude of 550 m. The study was carried out in a 2 x 4 split-plot design, adopting in the plots the fertilizer application form factor in two levels (Fertirrigated and Conventional), the fertilizer dose factor with N and K2O in four levels (NK50 = 50 %; NK100 = 100%; NK200 = 200% and NK300 = 300% of the recommended dose for an expected productivity of 75 sc ha1 ), conducted in a randomized block design with three replications. In the first chapter, a literature review addressed the contributions of agricultural sciences to the improvement of conilon coffee cultivation techniques. In the second, the effects of treatments on coffee productivity and its relationship with the electrical conductivity of the soil solution were analyzed. In the third, changes in soil chemical attributes due to the effects of treatments were investigated. As a result, it was found that the productivity of fertirrigated plots were statistically higher for the same dose when compared to conventional plots. Under fertigation, productivity increases were also observed as a function of the doses, obtaining 73.65; 108.55; 147.64 and 141.41 sc ha-1 respectively for NK50, NK100, NK200 and NK300. The maximum productivity was 150.11 sc ha-1 at the dose of 236.5% in fertigation, however, the plots conducted with conventional fertilization did not show statistical significance from the dose of 100%. Considering only the standard dose (NK100), the fertirrigated plots showed productivity 44.73% higher than the expected value and described in the Espírito Santo recommendation manual, which would allow a reduction of up to 30% in NK doses in fertigated systems. However, in the evaluation of soil attributes, the fertirrigated plots tended to progressive soil acidification and reduction in the concentration of Ca2+, Mg2+, SB, V% and (t) due to the increase in fertilizer doses. This result was associated with the intensification of the use of urea and the greater absorption of nutrients.
- ItemPoda programada de ciclo do cafeeiro arábica: ciclagem biogeoquímica, crescimento e produção(Universidade Federal do Espírito Santo, 2021-07-28) Souza, Matheus Fonseca de; Tomaz, Marcelo Antonio; https://orcid.org/0000000253070219; http://lattes.cnpq.br/7116075671588859; https://orcid.org/0000000280740919; http://lattes.cnpq.br/5534798832058753; Senra, João Felipe de Brites; https://orcid.org/0000-0001-7915-2821; http://lattes.cnpq.br/2268398576674753; Oliveira, Fábio Luiz de; https://orcid.org/0000000217116988; http://lattes.cnpq.br/8904451083627425; Amaral, José Francisco Teixeira do; https://orcid.org/0000000330274830; http://lattes.cnpq.br/1032225749434466; Guarconi, Rogerio Carvalho; https://orcid.org/0000-0002-6095-2287; http://lattes.cnpq.br/2239890092242136The study of productive and morphophysiological traits of coffee tree has been useful in the definition process of more efficient fertilization, according to nutritional demands and, also the efficiency of use of applied fertilizers and the fraction of nutrients supplied by cycling and soil. Thus, the aim of this study was to evaluate the nutrients biogeochemical cycling promoted by Programmed Cycle Pruning (PCP), and its contribution to vegetative development and production in arabica coffee, cultivated under different levels of nitrogen and potassium fertilization. The study was developed in Martins Soares city, Espírito Santo State, Brazil, at the Centro de Pesquisas Cafeeiras Eloy Carlos Heringer, located at 750 m altitude, with geographic coordinates 20º14'30"S and 41º50'44"W in an arabica coffee plantation. The genetic material studied was the cultivar Catuaí Vermelho IAC 44, with intermediate maturation, with eight years of age, conducted in a spacing of 2.5 x 0.6 m, with a population of 6666 plants per hectare. The first chapter aimed to evaluate the nutrient cycling capacity promoted by PCP in arabica coffee, submitted to four levels of N fertilization in the soil. The biomass and nutrient content experiment was carried out in randomized blocks, with 4 treatments and 4 replications, with four levels of N fertilization (50, 100, 150 and 200% of the recommended standard fertilization for arabica coffee). The experiment of decomposition, mineralization and nutrient release was carried out in a randomized block design with 4 replications, in a split plot in time schemes, the plots being composed of four levels of N fertilization (50, 100, 150 and 200%) and the subplots consisting of ten decomposition times (0, 30, 60, 90, 120, 150, 180, 240, 300 and 360 days). The biomass production from PCP was 1.12, 1.36, 1.28 and 1.48 t ha-1 of leaf dry matter and 2.14, 2.11, 1.98, 2.29 t ha-1 of branches dry matter in treatments 50, 100, 150 and 200% of N, respectively. The average decomposition of the leaves resulting from PCP was 76.6%, remaining 23.4% of initial weight during the period of 360 days. The biogeochemical cycling of macronutrients N, P, K, Ca and Mg was 43.02, 2.15, 39.19, 62.32 and 8.11 kg ha-1 , respectively. The second chapter aimed to evaluate the vegetative and productive development of arabica coffee conducted by PCP, submitted to four levels of N and K fertilization in the soil. The experiment was carried out in a factorial scheme, 4 x 4, in a randomized block design. Both the first factor and the second factor corresponded to four levels of N and K fertilization (50, 100, 150 and 200%), of the standard recommended fertilization for arabica coffee. The length of orthotropic branches, number of plagiotropic branches, length of plagiotropic branches, number of nodes per plagiotropic branch, productivity, grain yield, fruits float percentage, fruits green percentage, ripe and dry fruits were evaluated. Joint statistical analysis were performed for the variables studied for the years 2019 and 2020. No functional relationship was observed (Equation that tries to explain the variation of the dependent variable by the variation of the levels of the independent variable) between N and K for the length of orthotropic branches, number of plagiotropic branches and length of plagiotropic branches. However, number of nodes per plagiotropic branch increased as a function of N and K in a quadratic functional relationship. Productivity linearly increased as a function of potassium levels until reaching 88.78 bags (of 60 kilograms) per hectare for the 200% K level and increased as a function of nitrogen up to the maximum point for the 193.4% N level and then decrease. The percentage of ripe coffee linearly increased as a function of nitrogen and potassium in a quadratic functional relationship. There was no significant functional relationship between grain yield, fruits float percentage, dry fruits percentage, green coffee percentage and grain size with N and K.
- ItemPotássio no solo, na planta e produção de capim mombaça decorrente do uso de água residuária da suinocultura(Universidade Federal do Espírito Santo, 2014-06-30) Effgen, Emanuel Maretto; Garcia, Giovanni de Oliveira; Reis, Edvaldo Fialho dos; Amaral, José Francisco Teixeira do Amaral; Rangel, Otacílio José Passos; Passos, Renato RibeiroIn Espírito Santo state, it is estimated that there are just over 226 000 head of pigs, therefore, these generate about 730.000m³ nutrient-rich waste annually. Thus, assuming that the application of the swine wastewater can promote changes in the potassiu
- ItemRelações entre fertilidade do solo, nutrição mineral do tomateiro (Solanum lycopersicum) e seu efeito sobre a mosca-minadora Liriomyza sativae (Blanchard, 1938) (Diptera: Agromyzidae)(Universidade Federal do Espírito Santo, 2014-11-28) Oliveira, Carlos Magno Ramos; Pratissoli, Dirceu; Holtz, Anderson Mathias; Passos, Renato Ribeiro; Rangel, Otacílio José Passos
- ItemUso do efluente da suinocultura em bananeira ‘Terra’(Universidade Federal do Espírito Santo, 2020-05-29) Spadeto, Marjorie de Freitas; Garcia, Giovanni de Oliveira; https://orcid.org/0000000313269909; http://lattes.cnpq.br/6763740612916491; https://orcid.org/; http://lattes.cnpq.br/; Tagliaferre, Cristiano; https://orcid.org/; http://lattes.cnpq.br/; Zucoloto, Moises; https://orcid.org/0000000305394750; http://lattes.cnpq.br/9552365183163692; Santos, Delfran Batista dos; https://orcid.org/; http://lattes.cnpq.br/; Reis, Edvaldo Fialho dos; https://orcid.org/0000000338231472; http://lattes.cnpq.br/2317496014692033The swine culture is an important economic activity in the national scenario, however this line of agriculture is responsible for considerable waste volumes that can cause negative impacts when dumped in an inappropriate manner to the environment. In turn