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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Produção e qualidade de frutos do tomateiro no sistema Viçosa de tutoramento em função do estado hídrico-nutricional / Yield and quality of the tomato fruits under Viçosa staking system as a function of water and nutritional status of the crop.

Delazari, Fábio Teixeira 17 July 2014 (has links)
Made available in DSpace on 2015-03-26T13:23:57Z (GMT). No. of bitstreams: 1 texto completo.pdf: 2434464 bytes, checksum: 80b9d76ccf12598e86e07c096aa00665 (MD5) Previous issue date: 2014-07-17 / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior / The reason of this experiment was to evaluate the water rates irrigated and the fertilizer rates applied on the tomato plant, under the Viçosa ́s staking system, which aimed to obtain the highest yield for the fresh market, maximums on water use efficiency and on the quality of the fruits, and also getting better concentration on nutrients in the tomato leaves. The experiment was installed in two seasons July 2013 and January 2014, both in Viçosa/MG, on the field research center, from the Agronomy Department. The treatments for both experiments were four different water rates irrigated L1, L2, L3 and L4 regarding on 50, 100, 150 and 200% of the real irrigation required by the crop (IRN) and also, four different fertilizer rates D1, D2, D3 and D4 regarding on 50, 100, 150 and 200% from the fertilizer rate recommendation (5a . The variables evaluated were: commercial production (PC), total yield (PT), big fruits (PFG), medium (PFM) and small fruits (PFP); productivity by the plant (PP), water use efficiency (WUE), pH, soluble solids, titratable acidic, flavor, consistence, lycopene and nutrients concentration in the leaves. It was used the average results from the two experiments. It was concluded after getting the final results, that the highest PC, PT, PFG and PP of the tomato, were obtained with 331 mm of water rate irrigated and 150% of the fertilizer rate recommendation. The highest water use efficiency was obtained with 276 mm of water rate irrigated and 150% of the fertilizer rate. The highest lycopene concentration (85,32 μg g-1) was obtained with 331 mm of water rate irrigated and 200% of the fertilizer rate. The macronutrients concentration foliar (N, P, K, Ca, Mg and S) and micronutrients (Mn, Zn, Fe, Cu and B) for the highest crop yield were 58,5; 5,5; 29,5; 60,6; 6,3 e 7,7 g kg-1 for the macronutrients and 481,1; 39,4; 273,1; 784,6 e 61,8 mg kg-1 for the micronutrients. The macronutrients concentration foliar (N, P, K, Ca, Mg and S) and micronutrients (Mn, Zn, Fe, Cu and B) for the maximum water use efficiency were 36,1; 4,9; 24,0; 63,7; 6,8 e 10,0 g kg-1 for the macronutrients and 643,9; 42,3; 312,3; 809,8 e 56,5 mg kg-1 for the micronutrients. / O objetivo do trabalho foi avaliar lâminas de irrigação e doses de adubação para o tomateiro cultivado no sistema Viçosa de tutoramento visando obter a máxima produtividade de frutos comerciais, eficiência no uso de água e qualidade de frutos e a melhor concentração de nutrientes na folha. O experimento foi instalado em duas épocas julho de 2013 e janeiro de 2014 em Viçosa/MG, na área experimental do Departamento de Fitotecnia. Os tratamentos para ambos os experimentos foram quatros lâminas de irrigação L1, L2, L3 e L4 correspondendo a 50, 100, 150 e 200% da irrigação real necessária (IRN) e quatro doses de adubação D1, D2, D3 e D4 correspondendo a 50, 100, 150 e 200% da recomendação (Approach 5th). As variáveis avaliadas foram: produtividade comercial (PC), total (PT), de frutos grandes (PFG), médios (PFM) e pequenos (PFP), produção por planta (PP), eficiência no uso da água (EUA), pH, sólidos solúveis, acidez titulável, sabor, firmeza, licopeno e concentração de nutrientes na folha. Trabalhou-se com os resultados médios dos dois experimentos. Com os resultados obtidos conclui-se que: As maiores PC, PT, PFG e PP de tomate foram obtidas com lâmina de irrigação de 331 mm e adubação de 150%. A maior eficiência no uso da água foi obtida com lâmina de irrigação de 276 mm e dose de adubação de 150%. O máximo teor de licopeno (85,32 μg g-1) foi obtido com a lâmina de 331 mm e dose de adubação de 200%. A concentração foliar de macronutrientes (N, P, K, Ca, Mg e S) e micronutrientes (Mn, Zn, Fe, Cu e B) para a máxima produtividade foram de 58,5; 5,5; 29,5; 60,6; 6,3 e 7,7 g kg-1 dos macronutrientes e 481,1; 39,4; 273,1; 784,6 e 61,8 mg kg-1 dos micronutrientes. A concentração foliar de macronutrientes (N, P, K, Ca, Mg e S) e micronutrientes (Mn, Zn, Fe, Cu e B) para a máxima eficiência no uso da água foram de 36,1; 4,9; 24,0; 63,7; 6,8 e 10,0 g kg-1 dos macronutrientes e 643,9; 42,3; 312,3; 809,8 e 56,5 mg kg-1 dos micronutrientes.

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