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

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.

Download Full-text

Interactive Effects of Photoperiod and Nitrogen Form on the Growth of Leaf Lettuce and Fluctuation of Nutrient Solution pH in Plant Factory Condition

Shokubutsu Kankyo Kogaku ◽

10.2525/shita.32.143 ◽

2020 ◽

Vol 32 (3) ◽

pp. 143-152

Author(s):

Naoki HATA ◽

Hailong XU

Keyword(s):

Nutrient Solution ◽

Interactive Effects ◽

Nitrogen Form ◽

Solution Ph ◽

Factory Condition ◽

Plant Factory ◽

Leaf Lettuce

Download Full-text

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.

Download Full-text

Effects of aluminum on nutrient solution pH and nitrate/ammonium uptake by triticale

Journal of Plant Nutrition ◽

10.1080/01904169709365342 ◽

1997 ◽

Vol 20 (10) ◽

pp. 1391-1401 ◽

Cited By ~ 6

Author(s):

A. M. G. Antunes ◽

M. Antonieta Nunes

Keyword(s):

Nutrient Solution ◽

Ammonium Uptake ◽

Solution Ph

Download Full-text

Influence of boron on growth and mineral composition of bean (Phaseolus vulgaris L.)

Anais da Escola Superior de Agricultura Luiz de Queiroz ◽

10.1590/s0071-12761981000100025 ◽

1981 ◽

Vol 38 (1) ◽

pp. 309-318

Author(s):

I. P. Oliveira ◽

E. Malavolta

Keyword(s):

Phaseolus Vulgaris ◽

Mineral Composition ◽

Nutrient Solution ◽

Boron Concentration ◽

Dry Weight ◽

Phaseolus Vulgaris L ◽

Mineral Concentration ◽

Affected Plant ◽

Differential Behaviour ◽

Total Dry Weight

Nine cultivars of Phaseolus vulgaris L. were grown in nutrient solution to study the effect of boron on growth and mineral composition. Data obtained in thie study allowed for the following conclusions: (1) high levels of boron affected plant height, root length, dry weight of tops, dry weight of root, and total dry weight; (2) regression analysis was used to point out differential behaviour among cultivars in relation to boron concentration in nutrient solution; (3) the best mineral concentration in the plant tissue was obtained with application of 0,5 ppm of boron in the nutrient solution.

Download Full-text

POTASSIUM-SODIUM SELECTIVITY OF SUNFLOWER AS INFLUENCED BY CALCIUM SUPPLY UNDER SALINE CONDITIONS / SELECTIVIDAD DEL GIRASOL RESPECTO AL POTASIO Y SODIO BAJO LA INFLUENCIA DE LA PROVISION DEL POTASIO Y LAS CONDITIONES DE SALINIDAD / SÉLECTIVITÉ DU TOURNESOL EN CE QUI CONCERNE LE POTASSIUM ET LE SODIUM SOUS L’EFFET DE L’APPPORT DE CALCIUM DANS DES CONDITIONS SALINES

Helia ◽

10.1515/helia.2001.24.34.121 ◽

2001 ◽

Vol 24 (34) ◽

pp. 121-130

Author(s):

Arshad Ali ◽

M. Salim Badr-u-Zaman ◽

Rahmatullah Badr-u-Zaman

Keyword(s):

Nutrient Solution ◽

Block Design ◽

High Concentration ◽

Solution Ph ◽

Positive Role ◽

Low Concentration ◽

Salinity Levels ◽

Half Strength ◽

Calcium Supply ◽

Hydroponic Study

SUMMARY A hydroponic study was conducted to investigate the influence of Ca supply on K+/Na+ selectivity of sunflower at 0, 75 and 150 mM NaCl in root medium. Sunflower (Helianthus annuus L. cv. Hysun-33) seeds were germinated in moist quartz sand and twelve-day old seedlings were foam-plugged in lids of plastic pots each containing 2.5 l of continuously aerated half strength Hoagland's nutrient solution without calcium salts. The solution pH was adjusted to 5.9 by adding HCl and NaOH. There were three salinity levels (0, 75 and 150 mM NaCl) and two calcium levels (5 and 10 mM CaCl2). The experiment was organized in a randomized complete block design (RCBD) in three replicates. At low concentration of calcium (5 mM), sunflower growth decreased drastically with increasing concentration of NaCl in nutrient solution. On the other hand, plants grown in high concentration of NaCl experienced less damage with relatively higher concentration of calcium. At relatively higher concentration of calcium (10 mM Ca), sunflower plants absorbed and translocated relatively more potassium and less sodium, than at low concentration of calcium (5 mM Ca), demonstrating the positive role of calcium in alleviating the hazardous effects of salinity on sunflower growth.

Download Full-text