scholarly journals Comparative studies on physiological and ecological characteristics of solanaceous fruit vegetables. (2). Effect of concentrations of nutrient solution on the water and nutrient uptake.

1987 ◽  
Vol 25 (2) ◽  
pp. 47-55
Author(s):  
Toru KATO ◽  
Lingfeng ZHONG
Keyword(s):  
Nutrient Uptake ◽  
Nutrient Solution ◽  
Comparative Studies ◽  
Ecological Characteristics

A continuous nutrient flow technique for comparative studies in plant nutrition

1962 ◽  
Vol 13 (6) ◽  
pp. 1054 ◽  
Author(s):  
CS Andrew ◽  
WHJ Pieters
Keyword(s):  
Nutrient Uptake ◽  
Nutrient Solution ◽  
Comparative Studies ◽  
Plant Nutrition ◽  
Nutrient Concentration ◽  
Compressed Air ◽  
Plant Nutrient ◽  
Nutrient Flow ◽  
High Concentrations ◽  
The Individual

A continuous nutrient flow technique for comparative studies of plant nutrient uptake is described. In this technique the nutrient solution enters a common mixing bowl before passing to the separate containers that are used for each batch or species of plants. The solution is continuously transferred through the individual containers by compressed air or pump at rates approximating 24 l./hr/container, and the nutrient concentration can be maintained within 5-10% of requirement by the introduction of fresh solution via the mixing bowl. The apparatus ensures uniformity of nutrient concentration and is equally adaptable to low and high concentrations.

scholarly journals Influence of Atomization Nozzles and Spraying Intervals on Growth, Biomass Yield, and Nutrient Uptake of Butter-Head Lettuce under Aeroponics System

Agronomy ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 97
Author(s):  
Mazhar H. Tunio ◽  
Jianmin Gao ◽  
Imran A. Lakhiar ◽  
Kashif A. Solangi ◽  
Waqar A. Qureshi ◽  
...  
Keyword(s):  
Root Growth ◽  
Nutrient Uptake ◽  
Nutrient Solution ◽  
Biomass Yield ◽  
Chemical Properties ◽  
Cultivated Plants ◽  
Growth Ratio ◽  
Shoot Ratio ◽  
Droplet Sizes ◽  
Root To Shoot Ratio

The atomized nutrient solution droplet sizes and spraying intervals can impact the chemical properties of the nutrient solution, biomass yield, root-to-shoot ratio and nutrient uptake of aeroponically cultivated plants. In this study, four different nozzles having droplet sizes N1 = 11.24, N2 = 26.35, N3 = 17.38 and N4 = 4.89 µm were selected and misted at three nutrient solution spraying intervals of 30, 45 and 60 min, with a 5 min spraying time. The measured parameters were power of hydrogen (pH) and electrical conductivity (EC) values of the nutrient solution, shoot and root growth, ratio of roots to shoots (fresh and dry), biomass yield and nutrient uptake. The results indicated that the N1 presented significantly lower changes in chemical properties than those of N2, N3 and N4, resulting in stable lateral root growth and increased biomass yield. Also, the root-to-shoot ratio significantly increased with increasing spraying interval using N1 and N4 nozzles. The N1 nozzle also revealed a significant effect on the phosphorous, potassium and magnesium uptake by the plants misted at proposed nutrient solution spraying intervals. However, the ultrasonic nozzle showed a nonsignificant effect on all measured parameters with respect to spraying intervals. In the last, this research experiment validates the applicability of air-assisted nozzle (N1) misting at a 30-min spraying interval and 5 min of spraying time for the cultivation of butter-head lettuce in aeroponic systems.

scholarly journals Nutrient Uptake of Single-node Cutting Rose `Red Velvet' and `Vital' by Nutritional Control in a Plant Factory

HortScience ◽  
2004 ◽  
Vol 39 (4) ◽  
pp. 769A-769
Author(s):  
Kyung-Hwan Yeo* ◽  
Jung-Min Son ◽  
Yong-Beom Lee
Keyword(s):  
Control System ◽  
Nutrient Uptake ◽  
Nutrient Solution ◽  
Root Zone ◽  
Drainage Water ◽  
Ionic Ratio ◽  
Single Node ◽  
Target Values ◽  
Plant Factory ◽  
Plant Stage

The plant factory to control growing system automatically is necessary to cultivate single-node cutting rose, which produce large numbers of uniform shoots per unit area in short cultivation. However, the recirculation of the nutrient solution in closed system leads to several problems. One of them is connected with the quality of nutrient solution and the supply of minerals. The uptake of specific nutrients depends on growth and development, or plant stage, which results in a shift in ionic ratio in the drainage water compared to the nutrient solution supplied. Consequently, the nutrient supply should be controlled to be equal to the demand of the plant to avoid disorder of nutrient solution, such as depletion or accumulation. Therefore this study was conducted to examine the effect of mineral nutritional control on nutrient uptake of single-node cutting rose `Red velvet' and `Vital' in a plant factory. The nutritional control of nutrient solution was conducted by five methods: the control of electrical conductivity (EC), N, P, and K elements (NPK), macro elements (M), macro and micro elements (MM) to target ranges in root zone, and the supplement of nutrient solution (S). In NPK, M, and MM control system, the input of nutrients was calculated as amounts of absorption by the plants compared to target values in root environment. The fertilizer supplement of N, P, and K was lower in EC control system than other control systems. In EC and S control system, the concentration of NO3- -N and K in root zone exceed optimal range whereas P, Ca, and Mg decreased at the later stage of growth. The concentrations of each nutrient in root environment were kept at the target ranges in M and MM control system, which showed optimum yield and product quality.

scholarly journals PEG-8000 Alters Morphology and Nutrient Concentration of Hydroponic Impatiens

HortScience ◽  
2005 ◽  
Vol 40 (6) ◽  
pp. 1768-1772 ◽  
Author(s):  
Stephanie Burnett ◽  
Marc van Iersel ◽  
Paul Thomas
Keyword(s):  
Electrical Conductivity ◽  
Polyethylene Glycol ◽  
Nutrient Uptake ◽  
Plant Height ◽  
Nutrient Solution ◽  
Nutrient Concentration ◽  
Nutrient Deficiency ◽  
Foliar Tissue ◽  
Impatiens Walleriana ◽  
Peg 8000

Osmotic compounds, such as polyethylene glycol 8000 (PEG-8000), reduce plant elongation by imposing controlled drought. However, the effects of PEG-8000 on nutrient uptake are unknown. Impatiens `Dazzler Pink' (Impatiens walleriana Hook. F.) were grown hydroponically in modified Hoagland solutions containing 0, 10, 17.5, 25, 32.5, 40, 47.5, 55, or 62.5 g·L–1 PEG-8000. Impatiens were up to 68% shorter than control plants when grown with PEG-8000 in the nutrient solution. Plants treated with PEG-8000 rates above 25 g·L–1 were either damaged or similar in size to seedlings treated with 25 g·L–1 of PEG-8000. Impatiens leaf water potentials (Ψw) were positively correlated with plant height. PEG-8000 reduced the electrical conductivity of Hoagland solutions as much as 40% compared to nontreated Hoagland solutions, suggesting that PEG-8000 may bind some of the nutrient ions in solution. Foliar tissue of PEG-treated impatiens contained significantly less nitrogen, calcium, zinc, and copper, but significantly more phosphorus and nickel than tissue from nontreated impatiens. However, no nutrient deficiency symptoms were induced.

Effect of Concentration of Nutrient Solution on Water and Nutrient Uptake of Tomato Cultivars in Hydroponics

2019 ◽  
Vol 53 (1) ◽  
pp. 13-21
Author(s):  
Gyeong Lee Choi ◽  
◽  
Kyung Hwan Yeo ◽  
Su Hyun Choi ◽  
Ho Jeong Jeong ◽  
...  
Keyword(s):  
Nutrient Uptake ◽  
Nutrient Solution ◽  
Tomato Cultivars

Formation of cluster roots in Alnus incana ssp. rugosa and other Alnus species

1996 ◽  
Vol 74 (11) ◽  
pp. 1684-1686 ◽  
Author(s):  
Todd M. Hurd ◽  
Christa R. Schwintzer
Keyword(s):  
Nutrient Uptake ◽  
Nutrient Solution ◽  
Alnus Glutinosa ◽  
Hydroponic Culture ◽  
Cluster Roots ◽  
Alnus Rubra ◽  
Alnus Incana ◽  
Alnus Viridis ◽  
Speckled Alder ◽  
Complete Nutrient Solution

Small numbers of cluster roots were found on older roots of Alnus incana ssp. rugosa (speckled alder) shrubs in the field at 2 of 11 sites. Cluster roots also formed infrequently in speckled alder grown hydroponically in complete nutrient solution. No cluster roots formed in solutions lacking P or Fe. Small numbers of cluster roots also formed in Alnus glutinosa grown hydroponically in the presence of P but not in its absence. In contrast, Alnus rubra produced small numbers of cluster roots in the absence of P but not in its presence. No cluster roots formed in Alnus viridis ssp. crispa. Cluster roots are probably not important for nutrient uptake in speckled alder because they form infrequently both in the field and in hydroponic culture. Keywords: Alnus incana ssp. rugosa, Alnus glutinosa, Alnus rubra, Alnus viridis ssp. crispa, cluster roots, proteoid roots.

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