Effect of electrical conductivity and transpiration on production of greenhouse tomato (Lycopersicon esculentum L.)

Li, Ya Ling; Stanghellini, C.; Challa, H.

doi:10.1016/s0304-4238(00)00190-4

Cited by 92 publications

(62 citation statements)

References 19 publications

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“…3). The shading experiments of Cockshull et al (1992) show that 30 g of tomatoes are harvested for each MJ PAR radiation at the top of the canopy, a value corroborated by the experiments of Li et al (2001). The results of Scholberg et al (2000) imply quite a similar value for field crops.…”

Section: Best Management: "The Lesser Of Two Evils"supporting

confidence: 61%

High Temperature Control in Mediterranean Greenhouse Production: The Constraints and the Options

Pascale

Stanghellini

2011

Acta Hortic.

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In the open field, the environment is a critical determinant of crop yield and produce quality and it affects the geographical distribution of most crop species. In contrast, in protected cultivation, environmental control allows the fulfillment of the actual needs depending on the technological level. The economic optimum, however, depends on the trade-off between the costs of increased greenhouse control and increase in return, dictated by yield quantity, yield quality and production timing. Additional constraints are increasingly applied for achieving environmental targets. However, the diverse facets of greenhouse technology in different areas of the world will necessarily require different approaches to achieve an improved utilization of the available resources. Although advanced technologies to improve resource use efficiency can be developed as a joint effort between different players involved in greenhouse technology, some specific requirements may clearly hinder the development of common "European" resource management models that, conversely should be calibrated for different environments. For instance, the quantification and control of resource fluxes can be better accomplished in a relatively closed and fully automated system, such as those utilized in the glasshouse of Northern-Central Europe, compared to Southern Europe, where different typologies of semiopen/semi-closed greenhouse systems generally co-exist. Based on these considerations, innovations aimed at improving resource use efficiency in greenhouse agriculture should implement these aspects and should reinforce and integrate information obtained from different research areas concerning the greenhouse production. Advancing knowledge on the physiology of high temperature adaptation, for instance, may support the development and validation of models for optimizing the greenhouse system and climate management in the Mediterranean. Overall, a successful approach will see horticulturists, plant physiologists, engineers and economists working together toward the definition of a sustainable greenhouse system.

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Section: Best Management: "The Lesser Of Two Evils"supporting

confidence: 61%

High Temperature Control in Mediterranean Greenhouse Production: The Constraints and the Options

Pascale

Stanghellini

2011

Acta Hortic.

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“…Increases in sugar and total soluble solids in tomato fruits subjected to salt or water stress are due to decreased water uptake (Bolarin et al, 2001;Chretien et al, 2000;Ehret and Ho, 1986;Li et al, 2001). Because of the tradeoff between increased sugar concentration and fruit size, however, final yields per plant are markedly reduced.…”

Section: Effect Of Timing Of Nutrient Concentration Increase Onmentioning

confidence: 99%

Effect of Moderate Salinity Stress on the Sugar Concentration and Fruit Yield in Single-truss, High-density Tomato Production System

Johkan

Nagatsuka

Yoshitomi

et al. 2014

J. Japan. Soc. Hort. Sci.

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To produce tomato fruits with 6% average Brix without decreasing yield, we investigated the effect of moderate salinity stress on Brix and yield in a single-truss, high-density tomato production system. Because tomato fruit development can be predicted from cumulative temperature, we also assessed cumulative temperature after anthesis as a potential indicator for determining the starting points of salinity stress treatments. When transverse diameters of the first fruit reached 4 cm (i.e., early increase treatment) or the first fruits were at the mature green stage (i.e., late increase treatment), nutrient solution electrical conductivity was slowly increased until the breaker stage from 1.8 dS·m -1 to 6.0 dS·m -1. Plants subjected to the late increase treatment produced tomato fruits with Brix values of 6% without reductions in marketable yield. We also increased nutrient solution electrical conductivity based on cumulative temperature after anthesis and found that early-treated plants produced tomatoes with higher Brix levels and yields than late-treated plants. In summary, moderate salinity stress to avoid excessive stress on plants increased sugar concentrations without decreasing fruit yield and resulted in tomato fruits with average Brix of about 6% when nutrient solution electrical conductivity was increased at a rate of 0.1 dS·m. Because seasonal differences in cumulative temperature influence the appropriate timing of salinity stress applications, further study is needed to optimize year-round growth under moderate salinity stress in single truss, high-density tomato production systems.

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“…Salinity stress in the root zone is known to improve tomato fruit quality in terms of the content and composition of soluble sugars and acids (Adams, 1991;Adams and Ho, 1989;Cuartero and Fernandez-Munoz, 1999;Ehret and Ho, 1986). However, salinity stress is accompanied by yield loss through a reduction in fruit weight, but not in the number of fruits (Li et al, 2001;Willumsen et al, 1996). Water influx into fruits is reduced by the high osmotic pressure of the irrigation solution, and this water stress inhibits fruit size (Bolarin et al, 2001;Chretien et al, 2000;Ehret and Ho, 1986;Li et al, 2001;Mavrogianopoulos et al, 2002).…”

Section: Introductionmentioning

confidence: 99%

“…However, salinity stress is accompanied by yield loss through a reduction in fruit weight, but not in the number of fruits (Li et al, 2001;Willumsen et al, 1996). Water influx into fruits is reduced by the high osmotic pressure of the irrigation solution, and this water stress inhibits fruit size (Bolarin et al, 2001;Chretien et al, 2000;Ehret and Ho, 1986;Li et al, 2001;Mavrogianopoulos et al, 2002). The duration of salinity stress is important because it affects fruit yield and quality.…”

Section: Introductionmentioning

confidence: 99%

Effects of Salinity Treatment Duration and Planting Density on Size and Sugar Content of Hydroponically Grown Tomato Fruits

Saito¹,

Fukuda²,

Nishimura³

2006

J. Japan. Soc. Hort. Sci.

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Tomato plants were grown using a nutrient film technique in a hydroponic system to evaluate the effects of starting time and duration of salinity treatment and the interaction between salinity and planting density on fruit yield and quality. The electrical conductivity (EC) of the nutrient solution was maintained until the anthesis of plants. Sodium chloride was added to the standard nutrient solution until EC 8.0 dS·m −1 and this level was maintained from the anthesis of the first flower truss until the fruit harvest (whole treatment); 8.0 dS·m −1 solution was applied from anthesis of the first truss until 20 days after anthesis (DAA) (early treatment) and from 20 DAA until the fruit harvest (late treatment). The average fruit weights in the whole, early, and late treatments were 46, 71, and 58% of the control weight, respectively. Fruit radius and cell size were also reduced under each salinity treatment; however, the estimated number of cells per fruit was not significantly affected by the salinity treatment. The levels of total soluble solids (Brix%) were 6.2 in the control and 9.9, 7.7, and 9.1 in the whole, early, and late treatments, respectively. Incidences of blossomend rot were 0, 33, 25, and 16% in the control, whole, early, and late treatments, respectively. The influence of planting density (8.5-9.5 plants/m 2 ) under saline conditions on fruit size and sugar content was not considerable unremarkable. The fruit yield at high planting density increased more than that at a low plating density under salinity treatment.

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Effect of electrical conductivity and transpiration on production of greenhouse tomato (Lycopersicon esculentum L.)

Cited by 92 publications

References 19 publications

High Temperature Control in Mediterranean Greenhouse Production: The Constraints and the Options

High Temperature Control in Mediterranean Greenhouse Production: The Constraints and the Options

Effect of Moderate Salinity Stress on the Sugar Concentration and Fruit Yield in Single-truss, High-density Tomato Production System

Effects of Salinity Treatment Duration and Planting Density on Size and Sugar Content of Hydroponically Grown Tomato Fruits

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