Yield and fruit quality of industrial tomato under saline irrigation

Scientia Agricola

Carlos Alberto Brasiliano Campos²  Pedro Dantas Fernandes¹  Hans Raj Gheyi¹  Flávio Favaro Blanco¹  Cira Belém Gonçalves¹  Selma Aparecida Ferreira Campos² 

[1],EAF-BJBelo Jardim PE ,Brasil

关键词: Lycopersicon esculentum Mill.;    salinity;    pulp yield;    water quality;    sodium;    Lycopersicon esculentum Mill.;    salinidade;    rendimento de polpa;    qualidade da água;    sódio;   

DOI  :  10.1590/S0103-90162006000200006

来源: SciELO

【 摘 要 】

Industrial tomato is the most important vegetable crop of the Brazilian agribusiness. Few researches have evaluated the tolerance of this crop to saline stress. In this study, the effects of five levels of salinity of the irrigation water (1, 2, 3, 4, and 5 dS m-1) and two equivalent proportions of Na:Ca:Mg (1:1:0.5 and 7:1:0.5) were tested on yield and quality of fruits of industrial tomato, cultivar IPA 6. Seedlings were transplanted in rhizotrons and grown under plastic covering until fruit ripening. Volume of water for daily irrigations was determined by the difference between the applied and drained volume in the previous irrigation. Unitary increase of water salinity above 1 dS m-1 reduced the commercial and total yield by 11.9 and 11.0%, respectively, and increased the concentration of soluble solids and the titratable acidity of the fruits by 13.9 and 9.4%, respectively. The increase of the proportion of sodium reduced the total and marketable yield, the number of marketable fruits and pulp yield. Water of moderate salinity, with low concentration of sodium, can be used in the irrigation of the industrial tomato, without significant yield losses.

【 授权许可】

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