Effects of varying sulphate concentrations on growth, physiology and yield of the greenhouse tomato

López, Javier Rodríguez; Tremblay, N.; Voogt, W.; Dube, S. D.; Gosselin, André

doi:10.1016/s0304-4238(96)00948-x

Cited by 32 publications

(22 citation statements)

References 9 publications

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“…To equalize the electrical conductivity (EC) of nutrient solutions across treatments (to avoid confounding the effects of EC with treatments), the concentrations of chloride (Cl) , sulphur (S) and sodium (Na) were allowed to vary in the range of 100-180, 70-150 and 40-80 mg L -1 , respectively. The variations of Cl, S and Na in these ranges of concentration would not have any significant effect on greenhouse tomatoes (Lopez et al 1996;Voogt and Sonneveld 1997;Nukaya and Hashimoto 2000). The final EC of all nutrient solutions was 3 ± 0.2 dS m -1 .…”

Section: Nutrient Treatmentsmentioning

confidence: 88%

Effects of calcium and magnesium on growth, fruit yield and quality in a fall greenhouse tomato crop grown on rockwool

and¹,

Papadopoulos²

2003

Can. J. Plant Sci.

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Hao, X. and Papadopoulos, A.P. 2003. Effects of calcium and magnesium on growth, fruit yield and quality in a fall greenhouse tomato crop grown on rockwool. Can. J. Plant Sci. 83: 903-912. Tomato (Lycopersicon esculentum Mill.) 'Trust' was grown on rockwool with two concentrations of calcium (150 and 300 mg L -1 ) in combination with four concentrations of magnesium (20, 50, 80 and 110 mg L -1 ) in fall, 1999, to investigate their effects on plant growth, leaf photosynthesis, and fruit yield and quality (fruit firmness, dry matter, soluble solids and russeting). High Ca (300 mg L -1 ) concentration increased fruit yield and reduced the incidence of blossom-end rot (BER) and fruit russeting, compared with the low Ca concentration (150 mg L -1 ). High Ca concentration reduced fruit firmness but did not affect fruit size and leaf photosynthesis. Plants grown at 20 mg L -1 Mg started to show leaf chlorosis on both the middle and bottom leaves 8 wk after planting. Leaves with moderate chlorosis lost about 50% of their photosynthetic capacity. Fruit yield in the late growth stage decreased at 20 mg L -1 Mg. Blossom-end rot incidence increased linearly with increasing Mg concentration in the early growth stage at low Ca, but BER incidence at high Ca was not affected by Mg concentration. Fruit firmness increased with increasing Mg concentration at low Ca. At high Ca, Mg concentration affected fruit firmness only late in the season; fruit firmness at 80 mg L -1 Mg was higher than at 50 mg L -1 Mg concentration. Fruit russeting in mid-season was affected by nutrient treatments, being the least at 300/50 mg L -1 Ca/Mg. Therefore, for a fall greenhouse tomato crop, the optimum Ca/Mg concentration for tomato production is estimated to be 300/50-80 mg L -1 . The Mg concentration may be started at 50 mg L -1 and gradually increased to 80 mg L -1 towards the end of the season, to improve plant growth and fruit firmness. l'effet de ces deux éléments sur la croissance, la photosynthèse dans les feuilles ainsi que le rendement fruitier et la qualité des fruits (fermeté, matière sèche, solides hydrosolubles et roussissement). Une forte concentration de Ca (300 mg par litre) améliore le rendement fruitier et diminue l'incidence de la nécrose apicale et du roussissement, comparativement à une concentration plus faible (150 mg par litre). Une plus grande concentration de Ca attendrit les fruits, mais n'en change pas le calibre et n'agit pas sur la photosynthèse. Les feuilles des plantes recevant 20 mg de Mg par litre commencent à présenter des signes de chlorose au bas et au milieu du plant huit semaines après la mise en terre. Les feuilles modérément attaquées par la chlorose perdent environ la moitié de leur pouvoir de photosynthèse. À 20 mg de Mg par litre, le rendement fruitier diminue à la fin de la période de croissance. L'incidence de la nécrose apicale progresse de façon linéaire avec la concentration de Mg au début de la croissance, à faible concentration de Ca, mais elle n'est pas affectée si l'apport de Ca est plus grand....

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Section: Nutrient Treatmentsmentioning

confidence: 88%

Effects of calcium and magnesium on growth, fruit yield and quality in a fall greenhouse tomato crop grown on rockwool

and¹,

Papadopoulos²

2003

Can. J. Plant Sci.

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“…However, after the adjustment in the fertilizer inputs in 1997, their concentrations were in acceptable ranges. The highest S concentration in 1997 was 200 mg L -1 ; this S concentration was not harmful to plant growth (Nukaya et al 1991;Lopez et al 1996). Several studies on Ca/Mg nutrition of greenhouse tomato (Sonneveld 1987;Hao and Papadopoulos, unpublished data) have demonstrated that plant growth and fruit yield in the latter growth stage benefited from high concentration of Ca and Mg.…”

Section: Nutrient Dynamics and Fertigation Management In Closed Systemsmentioning

confidence: 99%

“…However, Nukaya et al (1991) found that the yield of tomato was not affected in a long-term tomato crop with S ranging from 160 ppm to 320 ppm. Lopez et al (1996) reported that tomato can tolerate S up to 650 ppm in a short experiment when the ratios between the major elements and S are appropriate. The S concentration in our 1996 experiment was not likely to have reached this high level, even in the late stage of the experiment.…”

Section: After Planting Was Higher Than In the Open Systemmentioning

confidence: 99%

Growth, photosynthesis and productivity of greenhouse tomato cultivated in open or closed rockwool systems

Hao¹,

Papadopoulos²

2002

Can. J. Plant Sci.

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Hao, X. and Papadopoulos, A. P. 2002. Growth, photosynthesis and productivity of greenhouse tomato cultivated in open or closed rockwool systems. Can. J. Plant Sci. 82: 771-780. Two full spring season tomato crops (Lycopersicon esculentum Mill. 'Trust') were grown in an open rockwool system with standard rockwool feeding formulae (O-R; conventional method), and in closed rockwool systems with standard rockwool (C-R) or Nutrient Film Technique (C-NFT) feeding formulae (modified in 1997) in 1996 and 1997 to examine the feasibility of a fully closed rockwool production system with appropriate feeding formulae. The closed rockwool system with optimized feeding formulae achieved high marketable yield, similar to that of the open rockwool system. There were no differences in early plant growth, plant biomass or biomass partitioning, and in total fruit yield, size and grades except for the closed rockwool system with the standard rockwool feeding formulae (C-R), which had lower yield than C-NFT in the last month of harvest in 1996. The photosynthesis of old foliage was higher and the root systems at the end of the experiments were rated healthier in plants grown in the closed (C-R and C-NFT) systems than in plants grown in the open (O-R) system. Over 30% of water and fertilizer was saved with the closed systems in comparison to the conventional open system. These results demonstrated that closed rockwool systems with optimized nutrient feedings are economically and environmentally sound alternative methods for greenhouse tomato production in Ontario.

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“…3 and resulted 19% yield reduction was observed in this study. The accumulation of SO 4 2-in the recycled nutrient solution is a common phenomenon in the closed soilless culture, which has been implicated to restrict the yield of tomatoes grown in NFT (Lopez et al, 1996;Zekki et al, 1996).…”

Section: Fruit Yieldmentioning

confidence: 99%

Comparisons of Ion Balance, Fruit Yield, Water, and Fertilizer Use Efficiencies in Open and Closed Soilless Culture of Paprika (Capsicum annuum L.)

Ko¹,

Ahn²,

Son³

2013

Korean Journal of Horticultural Science and Technology

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Abstract. Although closed soilless culture is useful for saving water and fertilizers with minimizing environmental pollution, adequate management of nutrient solutions is still not stabilized in greenhouse cultivation. In order to investigate the problems occurred in closed soilless culture of Paprika (Capsicum annuum L., cv. Fiesta), we compared ion balance, fruit yield, and the water and fertilizer use efficiencies in the closed system with those in the open system. The plants were grown in rockwool culture with a nutrient solution of EC 2.5 dS･m in the open system was 20% higher, but the total water use per fruit was not significantly different between the two systems, while t total fertilizer use per fruit was 78% higher in the closed system. Amount of marketable fruits was not significantly different between the two systems. We concluded that the increase in K + supply and the replenishment of recycled nutrient solution every four weeks were required for preventing the imbalance or depletion of nutrients in the close soilless culture of paprika plants to get more balanced nutrient composition during whole cultivation period.Additional key words: ratio of nutrient composition, recycled soilless culture, reused nutrient solution

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Effects of varying sulphate concentrations on growth, physiology and yield of the greenhouse tomato

Cited by 32 publications

References 9 publications

Effects of calcium and magnesium on growth, fruit yield and quality in a fall greenhouse tomato crop grown on rockwool

Effects of calcium and magnesium on growth, fruit yield and quality in a fall greenhouse tomato crop grown on rockwool

Growth, photosynthesis and productivity of greenhouse tomato cultivated in open or closed rockwool systems

Comparisons of Ion Balance, Fruit Yield, Water, and Fertilizer Use Efficiencies in Open and Closed Soilless Culture of Paprika (Capsicum annuum L.)

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