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Journal ArticleDOI

Impactos do nível de irrigação e da cobertura do solo na cultura do tomateiro

TLDR
In this article, the effects of irrigation depths (60%, 80%, 100%, 120%, 120% and 140% of the ETc) on yield, fruit quality and water usage were evaluated.
Abstract
IMPACTOS DO NIVEL DE IRRIGACAO E DA COBERTURA DO SOLO NA CULTURA DO TOMATEIRO RAFAEL CAMPAGNOL1; CAMILA ABRAHAO2; SIMONE DA COSTA MELLO1; VICTORIA ROSSMARY SANTACRUZ OVIEDO3; KEIGO MINAMI1 1Departamento de Producao Vegetal, ESALQ/USP, Avenida Padua Dias, 11, 13418-900, Piracicaba, Sao Paulo, Brasil, e-mail: rcampagnol@usp.br, scmello@usp.br, kminami@usp.br 2Departamento de Recursos Naturais – Ciencia do Solo, FCA/UNESP, Fazenda Lageado, Rua Jose Barbosa de Barros, n. 1780, 18610-307, Botucatu, Sao Paulo, Brasil, e-mail: ca_abrahao@yahoo.com.br 3Direccion de Investigacion Agricola/Ministerio da Agricultura. Ruta II, km 10, San Lorenzo, Paraguai, e-mail: vrossmary@hotmail.com 1 RESUMO A agua e um bem cada vez mais escasso e que tambem exerce grande influencia na produtividade e na qualidade do tomateiro, tornando seu manejo um fator preponderante para a obtencao de maiores rentabilidades aliada a sustentabilidade. Avaliou-se nesse trabalho os efeitos de lâminas de irrigacao (60%, 80%, 100%, 120% e 140% da ETc) e da cobertura do solo com filme plastico de polietileno preto sobre a produtividade, qualidade dos frutos e eficiencia do uso da agua (EUA) na cultura do tomateiro em campo, durante o periodo chuvoso, na regiao de Piracicaba (SP). O delineamento experimental foi em parcelas subdivididas distribuidas aleatoriamente no esquema fatorial 2 x 5, com quatro repeticoes. As lâminas de irrigacao nao influenciaram a produtividade total, produtividade comercial, massa media dos frutos e numero de frutos por planta. A cobertura do solo com plastico preto aumentou a produtividade total e comercial de frutos, mas reduziu o teor de solidos soluveis. A eficiencia do uso da agua aumentou com a reducao da lâmina de irrigacao, sendo esse aumento mais pronunciado com o uso da cobertura de solo. Palavras-chave: Solanum lycopersicum, lâmina de agua, deficit hidrico, podridao apical, mulching. CAMPAGNOL, R; ABRAHAO, C; MELLO, S. C.; OVIEDO, V. R. S.; MINAMI, K. IMPACTS OF IRRIGATION LEVELS AND SOIL COVER ON TOMATO CROP 2 ABSTRACT Water is an asset increasingly scarce and it has also a   great influence on yield and quality of  tomato crop, making its management  a major factor to achieve  higher profitability coupled with sustainability. The study aimed at evaluating the effects of irrigation depths (60%, 80%, 100%, 120% and 140% of  ETc) and black polyethylene plastic as soil covering   on yield, fruit quality and water use efficiency (WUE) in field tomato crop  during the rainy  season in Piracicaba, SP, Brazil. The experimental design was split plots randomly distributed   into   2 x 5 factorial arrangement   with four replications.  No influence was observed of irrigation depths on total and marketable yield, mean   weight and number of fruits per plant.    The use of black polyethylene plastic  as soil covering increased total and marketable yield, but decreased the content of  fruit soluble solids.  An increase of water use efficiency was observed by reducing water levels, and it was more pronounced when   soil cover had been   used. Keywords: Solanum lycopersicum, water level, water deficit, blossom-end rot, mulching.

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Citations
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The effect of different mulching on tomato development and yield

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Performance of processing tomatoes under different supply levels of crop evapotranspiration

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Response of the cherry tomato to watering and ground cover under organic cultivation

TL;DR: In this paper, the authors evaluated water and ground cover on organic cherry tomato in the Brazilian semi-arid region and showed that the ground cover can contribute to the highest commercial yield.
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Irrigation Depth and Nitrogen Fertilization on Production and Quality of Cherry Tomatoes

TL;DR: Nitrogen fertilization and water supply are determinant factors for production and physical-chemical quality of cherry tomato and productive and qualitative characteristics of tomato fruits were evaluated.
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Yield in tomato under two water depths and plastic mulching

TL;DR: In this article, the effects of plastic mulch under two water depths on the productive characteristics of a commercial tomato field were investigated. And the results showed that the use of mulch associated with a water depth of 188 mm provided an increase in tomato yield.
References
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Book

Crop evapotranspiration : guidelines for computing crop water requirements

TL;DR: In this paper, an updated procedure for calculating reference and crop evapotranspiration from meteorological data and crop coefficients is presented, based on the FAO Penman-Monteith method.
Journal ArticleDOI

Response of Greenhouse tomato to irrigation and fertigation

TL;DR: A 2-year study was conducted during 2002-2004 at Department of Soil and Water Engineering, Punjab Agricultural University, Ludhiana to investigate the effect of irrigation and fertigation on Greenhouse tomato as discussed by the authors.
Journal ArticleDOI

A simple dated water-production function for use in irrigated agriculture

TL;DR: In this article, a simple multiplicative dated water-production function is proposed based on the heuristic assumption that the Boolean principle is applicable, and compared for a number of crops, with the Stewart-Hagan-Pruitt and Jensen models.
Book ChapterDOI

Factors Involved in Fruit Calcium Deficiency Disorders

TL;DR: Ca2þ deficiency disorders in fruit may not be caused by a single factor, but most likely by a combination of mechanisms that lower Ca2ý concentration at a specific tissue and cell localization, leading to Ca2 þ deficiency symptoms.