Avaliação de genótipos de tomateiro tipo Santa Cruz no período de inverno, em Araguari, MG

Peixoto, José Ricardo; Oliveira, Celso Mattes de; Silva, Rogério Pereira da; Angelis, Bruno De; Filho, Arthur Bernardes Cecílio

doi:10.1590/s0100-204x1999001200011

Cited by 4 publications

(1 citation statement)

References 1 publication

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“…No Brasil, inúmeros trabalhos foram conduzidos para avaliar as características morfológicas, agronômicas, qualidade de frutos e adaptação edafoclimática de cultivares de tomate, das quais as variedades Santa Cruz e Santa Clara configuram como progenitoras de importantes genótipos (Leal, 1973;Silva, 1996;Peixoto et al, 1999), porém, são muito escassas as informações quanto à nutrição e eficiência de utilização do fósforo pelo tomateiro.…”

Section: Introductionunclassified

Utilização de fósforo do solo e do fertilizante por tomateiro

Alvarez

Duete²,

Muraoka

et al. 2002

Sci. agric. (Piracicaba, Braz.)

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RESUMO: O fósforo, embora seja o macronutriente em menor concentração na maioria das culturas, é o mais aplicado como fertilizante mineral, constituindo uma parcela significativa do custo de produção agrícola. O conhecimento das diferenças entre variedades de plantas em relação à absorção do fósforo do solo e do fertilizante torna-se de grande importância para programas de melhoramento e manejo da adubação fosfatada. Utilizando a técnica do traçador radioativo 32 P, foram avaliadas as diferenças na absorção de fósforo proveniente do solo e do fertilizante (superfosfato triplo), na disponibilidade de P do solo pelos valores L e A e nas eficiências fisiológica, ecofisiológica e agronômica do nutriente pelas variedades comerciais de tomate (Licopersicum esculentum Will) Santa Clara e Santa Cruz. Conduziu-se um experimento em condições de casa de vegetação com dois solos (Latossolo Vermelho distrófico e Latossolo Vermelho-Amarelo eutrófico) e dois níveis de P (0 e 31,1 mg kg -1 ). A resposta das plantas foi diferente nos dois solos e em concordância com suas características. Houve aumentos significativos, em ambos os solos, na produção de matéria seca, no valor L e na absorção de P do solo devido à aplicação do fertilizante mineral, mas não no valor A. Diferenças entre variedades quanto à produção de matéria seca, concentração de fósforo, eficiência fisiológica, ecofisiológica e agronômica foram mais marcadas no solo Latossolo Vermelho-Amarelo eutrófico. Não houve diferenças entre as variedades na absorção de P do solo e do fertilizante, valores L e A. Palavras-chave: Licopersicum esculentum, valor A, valor L, 32 P, radioisótopo SOIL AND FERTILIZER PHOSPHORUS USE BY TOMATOABSTRACT: Phosphorus, despite its relatively low content in most crops is the most applied nutrient as mineral fertilizer and is an important fraction of the cost of agricultural production. Knowledge of the differences among plant varieties in relation to soil and fertilizer P uptake is fundamental for breeding improvement programs and management of phosphate fertilization. Differences in P uptake from soil and fertilizer (triple superphosphate), soil P availability through L and A values, and the physiologic, ecophysiologic and agronomic efficiencies of two commercial tomato (Lycopersicum esculentum Will) varieties, Santa Clara and Santa Cruz, were evaluated by the 32 P technique. The experiment was carried out in a greenhouse, using two soils, a dystrophic Dark Red Latosol and an eutrophic Red Yellow Latosol, and two P fertilizer application rates (0 and 31.1 mg kg -1 ). Plant responses were markedly different in the two different soils. There was a clear increase in dry matter production, L value, and P uptake from the soil due to fertilizer application, but not in the A values. Differences in dry matter production, P concentration and physiologic, ecophysiologic and agronomic efficiency between varieties differed more for the eutrophic Red Yellow Latosol. There was no difference between the two varieties in relation to the uptake of soil and f...

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Section: Introductionunclassified

Utilização de fósforo do solo e do fertilizante por tomateiro

Alvarez

Duete²,

Muraoka

et al. 2002

Sci. agric. (Piracicaba, Braz.)

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Absorção de nutrientes e resposta à adubação em linhagens de tomateiro

Oliveira

Giordano

et al. 2009

Hortic. Bras.

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Palavras-chave: Solanum lycopersicum, DRIS, nutrição de plantas, melhoramento genético. ABSTRACT Nutrient uptake and response to fertilization of tomato inbred linesTwenty nine processing tomato inbred lines were evaluated for their efficiency in nutrient uptake and in their response to fertilization. Two field assays were carried out at Embrapa Hortaliças, Brazil, with distinct fertilization dosages in 2006. In the first assay 1/3 of the total fertilization was applied when compared with the second assay. The experiments were conducted using a completely randomized design with three replications. The criteria to rank the inbred lines in both assays were the DRIS (Diagnosis and Recommendation Integrated System) index value and fruit yield. The critical values in order to distinguish efficient versus non-efficient as well as responsive versus non-responsive inbred lines were the average increase in both DRIS index value and fruit yield. Differences were detected among inbred lines for the uptake efficiency for all nutrients and for response to fertilization. The inbred lines 03, 40, 09 and 22 were classified as responsive to fertilization and efficient in N uptake; the lines 03, 04, 09, 13, 15 and 29 were for P; 03, 05, 10, 21, 22, 25 and 27 for K, 05, 10, 21, 22, 25, 27 and 29 for Ca; 04, 13, 15, 27 and 29 for S and B; 03, 05, 09, 10 and 27 for Cu. The inbred lines with the best performance were 27 in relation to nutrient absorption, and the lines 03, 04, 05 and 29 in relation to fertilization response.

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Production and quality of tomato fruits under organic management

Toledo¹,

Costa²,

Bacci³

et al. 2011

Hortic. Bras.

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Information about the production and quality of tomato cultivars under organic management and the conditions of climate and soil from the north region of Minas Gerais State, Brasil, are scarce. Thus, this research was carried out to evaluate the production and quality of tomato cultivars under organic management, in this region. The treatments consisted of four open pollination tomato cultivars (Chadwick Cherry, Pitanga vermelha, Santa Clara and Santa Cruz Kada) and five hybrid cultivars (Marguerita, Nicolas, Ellen, Magestade and Dominador). The experimental design was of randomized blocks with three replications. The experiment was carried out using organic fertilization in the initial preparation of the area, compost and rock phosphate and sprays with Bordeaux mixture, neem oil and fertilizer. The marketable yield varied from 12.3 t ha-1 to 23.9 t ha-1. The hybrid Marguerita presented higher marketable production (23.9 t ha-1). The cultivars Chadwick Cherry and Pitanga Vermelha reached similar production as most cultivars and larger proportions of marketable and giant fruits, and therefore, better market quality. All the cultivars presented low potassium and manganese levels in foliar tissue suggesting an evaluation after various organic manuring cycles and better nutrition conditions are necessary to permit the comparison of the performance of cultivars in this system.

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Avaliação de genótipos de tomateiro tipo Santa Cruz no período de inverno, em Araguari, MG

Cited by 4 publications

References 1 publication

Utilização de fósforo do solo e do fertilizante por tomateiro

Utilização de fósforo do solo e do fertilizante por tomateiro

Absorção de nutrientes e resposta à adubação em linhagens de tomateiro

Production and quality of tomato fruits under organic management

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