Mineral Nutrition and Productivity of Hydroponically Grown Tomatoes in Relation to Nutrient Solution Recycling

López, Javier Rodríguez; Santos-Perez, J.; Lozano-Trejo, Salvador; Urrestarazu, Miguel

doi:10.17660/actahortic.2003.609.31

Cited by 8 publications

(9 citation statements)

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“…The changes in the EC and composition of recycled nutrient solution were supposed to from the imbalance in uptake ratio of water and nutrient. Lopez et al (2003) reported that when the nutrient solution is recycled, sulfate, bicarbonate and chloride ions may accumulate resulting in a significant increase of EC. Although the pH of drainage solution in the closed system was observed within 5.5 to 6.5, it was a little higher than that in the open system (Fig.…”

Section: Ec and Ph In The Recycled Nutrient Solutionmentioning

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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Section: Ec and Ph In The Recycled Nutrient Solutionmentioning

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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“…Yield did not differ as a result of recycling in studies that used rockwool (Komosa et al, 2011), even when Na accumulated in a recycling system (Isozaki et al, 2004). However, recycling in a nutrient film system did lower tomato yield and quality (Lopez et al, 2003). This was attributed to an accumulation of sulfate (Zekki et al, 1996).…”

Section: Resultsmentioning

confidence: 82%

“…The error bars indicate the range in measurements from replicate systems in two greenhouses. there is an accumulation of sodium (Na) and chlorine (Dasgan and Ekici, 2005;Komosa et al, 2011;Lopez et al, 2003), because Na is preferentially excluded from the plant (Carmassi et al, 2005). The savings of nutrients resulting from recycling with rockwool medium varied between 31% for P to 63% for Ca (Komosa et al, 2011), and in a study of four other media, the savings of nutrients resulting from recycling were calculated to be as high as 34% (Tuzel et al, 2001).…”

Section: Resultsmentioning

confidence: 99%

“…Increasing nutrient concentrations and EC from 2 to 6 dS · m -1 had little effect on nitrogen or potassium levels in tomato leaves, but it lowered calcium (Charbonneau et al, 1988). Sulfate could combine with calcium in solution, forming CaSO 4 , thus rendering the calcium unavailable to the plant (Lopez et al, 2003). Calcium deficiency is a known cause of blossom-end rot in tomato (Ho et al, 1995).…”

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confidence: 99%

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Effect on Yield and Quality of a Simple System to Recycle Nutrient Solution to Greenhouse Tomato

Gent¹,

Short²

2012

horts

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Recycling the nutrient solution used for greenhouse vegetable production can prevent groundwater pollution. Recycling could result in an accumulation or deficiency of elements that would be deleterious to plant growth, product quality, and the dietary value of vegetables. Complex fertilizer systems have been developed to maintain appropriate concentrations of all elements in recycled systems. We compared a much simpler system in which all excess solution drained from the plants was recycled without adjustment or dilution compared with a system with no recycling as a control. Crops of greenhouse tomato (Solanum lycopersicon L.) were grown in two years to compare these systems. Differences in composition of solution drained from the plants developed gradually over more than one month. The transition from vegetative to fruit growth, which coincided with warmer weather, resulted in a decreased demand for nitrate, and other nutrients, and an increase in electrical conductivity (EC) of water drained from the root zone. The composition of the fresh solution supplied to the plants was adjusted accordingly. It took a longer time to re-establish an optimum composition for recycled compared with control watering. EC tended to increase in the recycled system. Recycling decreased total yield and fruit size, but marketable yield was unaffected. The marketable fraction increased in the recycled treatment, primarily as a result of fewer fruit with cracked skin. This effect was consistent across seven cultivars. The cultivars differed in this and other defects, but they did not differ in their response to the two watering systems.

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“…Recirculation has both environmental and economic benefits. The ultimate efficiency in water use is to collect, treat, adjust, and re-circulate the excess nutrient solution from greenhouse production (Lopez et al, 2003). In addition, new legislation aiming to reduce environmental pollution from waste nutrient solutions is forcing growers to adopt closed systems, which require better-quality water and chemicals than open systems (Adams, 2002).…”

Section: Introductionmentioning

confidence: 99%

Quartz Porphyry Treatment Alters Irrigation Water Chemistry, Affecting Hydroponic Vegetable Production

Azad

Islam

Ishikawa

2010

Journal of Plant Nutrition

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2 This study focused on using quartz porphyry (QP) as a water treatment to improve hydroponic production of komatsuna (Brassica rapa L. nothovar; Japanese mustard spinach). We compared the chemistries of the control and QP-treated nutrient solutions and found that magnesium (Mg 2+ ) and calcium (Ca 2+ ) concentrations increased linearly up to day 21 following sowing in both conditions, then declined slightly. The QP treatment reduced sodium (Na + ) and chloride (Cl − ) concentrations for the whole cultivation period. In both the control and QP-treated solutions, nitrate (NO − 3 ) and sulfate (SO 2− 4 ) showed the same trend to a daily increase. In spite of these similarities, however, komatsuna production was better with the QP-treated nutrient solution compared to control. Treatment with QP during cultivation in August{September reduced the harmful effects of Na + , chloride (Cl − ), nitrite (NO − 2 ), and SO 2− 4 by reducing concentrations of these ions, possibly leading to decreased salinity and toxicity effects in the plants. Mineral concentrations during October{November differed from those of August/September, resulting in variation among the different growth parameters for komatsuna.

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Mineral Nutrition and Productivity of Hydroponically Grown Tomatoes in Relation to Nutrient Solution Recycling

Cited by 8 publications

References 0 publications

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

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

Effect on Yield and Quality of a Simple System to Recycle Nutrient Solution to Greenhouse Tomato

Quartz Porphyry Treatment Alters Irrigation Water Chemistry, Affecting Hydroponic Vegetable Production

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