Effects of electrical conductivity of irrigation water on the growth and production of Solanum lycopersicum L. var. cerasiforme grown in greenhouse

Content Provider	Semantic Scholar
Author	Marchese, Miriam Tuttobene, Rosalena Restuccia, Alessia Mauromicale, Giovanni Restuccia, Giovanni
Copyright Year	2008
Abstract	Tomato (Solanum lycopersicum L.) is commonly considered moderately tolerant to salinity and its tolerance varies in relation to genotype and the plant's organ. With regard to the latter aspect, it was found that the negative effects of salinity become apparent with electrical conductivity values of the circulating solution starting from 2.5 3.0 dS m-1 for the fruits, from 4.5 5.0 dS m-1 for the stems and leaves and from 6.0 dS m-1 for the roots. Furthermore, cultivars with small fruits show less marked reductions in fruit weight and production; they may therefore represent a solution for environments with only saline water. The aim of the research was to study in tomato var. cerasiforme “Naomi” cultivated in greenhouse, the residual effects of irrigation carried out for 10 consecutive years with saline water. At 75 90 and 105 days after transplantation, ive plants and corresponding soil samples from 0 to -40 cm, were collected from each plot. On each plant, the number and the weight of marketable fruits per cluster and the epigeal biomass dry weight (stems + leaves + fruits) were recorded. On each soil sample the electrical conductivity of extract saturated (ECe) was determined. The use of irrigation water with ECw luctuating around 2.0 dS m-1 over a decade, determined values of ECe in the soil above the tolerance limit only for the fruit production (3.8 compared to 2.5 3.0 dS m-1). With ECw equal to 6.0 + 10.0 dS m-1, levels of ECe exceeded those considered detrimental to the production of dry epigeal biomass (stems + leaves + fruits). The effects of increasing ECe on the fruit production were constantly determined through the reduction of fruit dry unit weight.
Starting Page	311
Ending Page	315
Page Count	5
File Format	PDF HTM / HTML
Volume Number	84
Alternate Webpage(s)	http://ressources.ciheam.org/om/pdf/a84/00800978.pdf
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article