Tuber Initiation in Hydroponically Grown Potatoes by Alteration of Solution pH

Because tuberization in potatoes (Solarium tuberosum L.) reportedly is inhibited when stolons are immersed in liquid, this study was conducted to determine the effect of intermittent pH reductions of the nutrient solution on tuber induction of potatoes in solution culture. Tissue-culture potato plantlets were transplanted into solutions maintained at pH 5.5. The pH of the nutrient solution was changed to 3.5 and 4.0 for 10 hours on each of three dates (30, 35, and 40 days after transplanting). For the pH 3.5 treatment, tubers were observed first on day 42 and averaged 140 tubers per plant at harvest on day 54. For the pH 4.0 treatment, tubers were observed first on day 48 and averaged 40 tubers per plant at harvest. At a constant pH 5.5, tubers were observed on day 52 and averaged two tubers per plant at harvest. Plants with the intermittent pH 3.5 had smaller shoots and roots with shorter and thicker stolons compared to constant pH 5.5. With the intermittent pH 4.0, plants were of similar size, but stolons were shorter and slightly thickener compared to those from pH 5.5. Mineral composition of leaf tissues at harvest was similar for the three pH treatments. These results indicate that regulation of solution pH can be a useful technique for inducing tuberization in potatoes.

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Salmonella Enteritidis survival in different temperatures and nutrient solution pH levels in hydroponically grown lettuce

Food Microbiology ◽

10.1016/j.fm.2021.103898 ◽

2021 ◽

pp. 103898

Author(s):

Panayiota Xylia ◽

Antonios Chrysargyris ◽

George Botsaris ◽

Panagiotis Skandamis ◽

Nikolaos Tzortzakis

Keyword(s):

Nutrient Solution ◽

Salmonella Enteritidis ◽

Solution Ph ◽

Different Temperatures ◽

Hydroponically Grown

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Tolerance of Trifolium subterraneum cultivars to low pH

Australian Journal of Agricultural Research ◽

10.1071/ar9850569 ◽

1985 ◽

Vol 36 (4) ◽

pp. 569 ◽

Cited By ~ 15

Author(s):

MK Kim ◽

DG Edwards ◽

CJ Asher

Keyword(s):

Phosphorus Uptake ◽

Subterranean Clover ◽

Trifolium Subterraneum ◽

Solution Culture ◽

Nutrient Concentrations ◽

Solution Ph ◽

Ph Values ◽

Phosphorus Absorption ◽

Constant Ph ◽

Effects Of Ph

Eleven cultivars of Trifolium subterraneum and Trifolium semipilosum cv. Safari were grown with adequate combined nitrogen for 27 days in flowing solution culture with controlled nutrient concentrations at constant pH values ranging from 3.5 to 6.5. A solution pH of 3.5 was lethal to all cultivars, but growth was in all cases vigorous at pH 4.0 (RGR 15.2-16.9 g 100 g-1 day-1). There were no significant effects of pH over the range of 4.0-6.5 on the yield of any clover cultivar. The results are discussed in relation to an earlier study suggesting greater tolerance of subterranean clover to pH values below 4.0. Phosphorus toxicity symptoms developed in all subterranean clover cultivars with the intensity of symptom development increasing with solution pH from 4.5 to 6.5. The concentration of phosphorus in the older leaves decreased as the solution pH was increased from 4.0 to 4.5, and then increased with further increase in pH, reaching values = 1.0%. Rates of phosphorus absorption followed a similar pattern of response to solution pH. Results are discussed with reference to previously reported effects of pH on phosphorus uptake.

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The Growth and Photosynthetic Characteristics of Potato (Solanum tuberosum L.) Plantlets as Affected by Hydroponic Solution pH and EC, Light, and CO2

Journal of the American Society for Horticultural Science ◽

10.21273/jashs.129.1.0100 ◽

2004 ◽

Vol 129 (1) ◽

pp. 100-105 ◽

Cited By ~ 5

Author(s):

Xuan-Chun Piao ◽

Debasis Chakrabarty ◽

Eun-Joo Hahn ◽

Kee-Yoeup Paek

Keyword(s):

Solanum Tuberosum ◽

Nutrient Solution ◽

Photosynthetic Rate ◽

Solanum Tuberosum L ◽

Russet Burbank ◽

Photon Flux ◽

Bioreactor Culture ◽

Solution Ph ◽

Plantlet Growth ◽

Potato Plantlets

In vitro nodal cuttings of potato (Solanum tuberosum L.) `Atlantic' and `Russet Burbank' from bioreactor culture were hydroponically cultured for 28 days using a deep flow technique (DFT) system. The response of plant growth and photosynthesis to different levels of solution electrical conductivity (EC; 0.08, 0.15, 0.22 and 0.36 S·cm-1) and pH (3, 4, 5, 6 and 7) were studied. The best growth, characters of shoot length, total shoot and root fresh and dry weight, were obtained in nutrient solution of pH 6.0 and EC 0.15 S·cm-1 for `Atlantic', while pH 7.0 and EC 0.15 S·cm-1 were found to be best for `Russet Burbank'. Plantlet growth was reduced by low solution pH (3.0) and high EC level (0.36 S·cm-1). Photosynthetic rate, stomatal conductance, and transpiration rate were also found to be affected by EC levels. Down regulation of photosynthesis, as indicated by chlorophyll fluorescence results, were observed when potato plantlets were cultured under nutrient solution of higher EC level. Plantlet growth and photosynthetic rate increased as photosynthetic photon flux (PPF) levels increased from 50 to 250 μmol·m-2·s-1. Particularly, increasing PPF level had a more distinctive effect on plantlet growth than CO2 enrichment condition. It was apparent from this study that nutrient solution of pH 6.0 and 0.15 S·cm-1 EC in combination with high PPF level (250 μmol·m-2·s-1) were suitable for hydroponic culture of potato plantlets as it would maximize net photosynthetic rate, and achieve the highest growth rates.

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Effects of nutrient solution pH on the survival and transmission of Clavibacter michiganensis ssp. michiganensis in hydroponically grown tomatoes

Plant Pathology ◽

10.1046/j.1365-3059.2001.00586.x ◽

2001 ◽

Vol 50 (4) ◽

pp. 503-508 ◽

Cited By ~ 9

Author(s):

R. Huang ◽

J. C. Tu

Keyword(s):

Nutrient Solution ◽

Clavibacter Michiganensis ◽

Solution Ph ◽

Hydroponically Grown

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Effect of nitrogen form and nutrient solution pH on growth and mineral composition of self-grafted and grafted tomatoes

Scientia Horticulturae ◽

10.1016/j.scienta.2012.02.012 ◽

2013 ◽

Vol 149 ◽

pp. 61-69 ◽

Cited By ~ 62

Author(s):

Daniela Borgognone ◽

Giuseppe Colla ◽

Youssef Rouphael ◽

Mariateresa Cardarelli ◽

Elvira Rea ◽

...

Keyword(s):

Mineral Composition ◽

Nutrient Solution ◽

Nitrogen Form ◽

Solution Ph

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Effect of concentration of nutrient solution and aeration on growth and dry matter partitioning in hydroponically grown young tomato plants.

Environment Control in Biology ◽

10.2525/ecb1963.29.27 ◽

1991 ◽

Vol 29 (1) ◽

pp. 27-33

Author(s):

Soung Han CHI ◽

Yutaka SHINOHARA ◽

Yoshio SUZUKI

Keyword(s):

Nutrient Solution ◽

Dry Matter ◽

Dry Matter Partitioning ◽

Tomato Plants ◽

Hydroponically Grown

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Effect of Potassium on the Content of Amino Acids in Alfalfa and Orchardgrass Grown With NO − 3 and NH + 4 Nitrogen in Nutrient Solution Culture 1

Crop Science ◽

10.2135/cropsci1967.0011183x000700060014x ◽

1967 ◽

Vol 7 (6) ◽

pp. 599-605 ◽

Cited By ~ 13

Author(s):

L. B. Macleod ◽

Michio Suzuki

Keyword(s):

Amino Acids ◽

Nutrient Solution ◽

Solution Culture ◽

Nutrient Solution Culture

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The Impact of Salt Stress on Plant Growth, Mineral Composition, and Antioxidant Activity in Tetragonia decumbens Mill.: An Underutilized Edible Halophyte in South Africa

Horticulturae ◽

10.3390/horticulturae7060140 ◽

2021 ◽

Vol 7 (6) ◽

pp. 140

Author(s):

Avela Sogoni ◽

Muhali Jimoh ◽

Learnmore Kambizi ◽

Charles Laubscher

Keyword(s):

Antioxidant Activity ◽

Plant Growth ◽

Mineral Composition ◽

Nutrient Solution ◽

Crop Production ◽

Saline Water ◽

Total Yield ◽

Control Treatment ◽

Antioxidant Power ◽

The Impact

Climate change, expanding soil salinization, and the developing shortages of freshwater have negatively affected crop production around the world. Seawater and salinized lands represent potentially cultivable areas for edible salt-tolerant plants. In the present study, the effect of salinity stress on plant growth, mineral composition (macro-and micro-nutrients), and antioxidant activity in dune spinach (Tetragonia decumbens) were evaluated. The treatments consisted of three salt concentrations, 50, 100, and 200 mM, produced by adding NaCl to the nutrient solution. The control treatment had no NaCl but was sustained and irrigated by the nutrient solution. Results revealed a significant increase in total yield, branch production, and ferric reducing antioxidant power in plants irrigated with nutrient solution incorporated with 50 mM NaCl. Conversely, an increased level of salinity (200 mM) caused a decrease in chlorophyll content (SPAD), while the phenolic content, as well as nitrogen, phosphorus, and sodium, increased. The results of this study indicate that there is potential for brackish water cultivation of dune spinach for consumption, especially in provinces experiencing the adverse effect of drought and salinity, where seawater or underground saline water could be diluted and used as irrigation water in the production of this vegetable.

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