scholarly journals Przydatność węgla brunatnego z kopalń Turów i Konin jako ściółki w uprawie hydroponicznej [Utility of brown coal from Turów and Konin mines as the seedbed in hydroponic cultures]

2015 ◽  
Vol 26 (1) ◽  
pp. 63-88
Author(s):  
Z. Gumińska ◽  
M. Gracz-Nalepka ◽  
B. Łukasiewicz ◽  
M. Leszner ◽  
M. Sławka
Keyword(s):  
Root Growth ◽  
Nutrient Solution ◽  
Brown Coal ◽  
Soluble Form ◽  
Hydroponic Cultures

In experiments with 5 vegetables and 5 decorative species – coal from both mines proved to be appropriate as the seedbed. Both types of coal stimulated root growth and maintained iron in soluble form. In general, better and earlier crops were obtained in hydroponic cultures than in pots filled either with soil or with coal watered with nutrient solution.

scholarly journals Research on the fertilizer demand and on the influence of detergent on sweet pea (Lathyrus odoratus L.) cv. 'Wirlarind', grown in hydroponic cultures

2013 ◽  
Vol 33 (1) ◽  
pp. 41-49
Author(s):  
Z. Gumiński
Keyword(s):  
Nutrient Solution ◽  
Brown Coal ◽  
Vegetation Season ◽  
Positive Difference ◽  
Detergent Action ◽  
Lathyrus Odoratus ◽  
Plant Grown ◽  
Hydroponic Cultures ◽  
Fertilizer Demand ◽  
Sweet Pea

The plants were grown in vessels composed of two parts: in the upper one, with the perforated bottom, was mixture of peat with brown coal or peat with scoria, and in the lower one - a nutrient solution to a height of 12 cm. The lowering of nitrogen fertillization (to 43%) and the increase in the molybdenum salt dose produced a positive difference in yield. A 3,7 g dose of fertilizer mixture per plant during the vegetation season has been found to be optimum. The detergent, when applied only once, improved the crop quality. When applied every fourth week, it caused a decrease in the number of racemes per plant grown on a slag~peat seedbed, whereas, on the lignitepeat seedbed all the detergent action was annulled.

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 Temperature and pH of the nutrient solution on wheat primary root growth

2004 ◽  
Vol 61 (3) ◽  
pp. 313-318 ◽  
Author(s):  
Carlos Eduardo de Oliveira Camargo ◽  
Antonio Wilson Penteado Ferreira Filho ◽  
Marcus Vinicius Salomon
Keyword(s):  
Root Growth ◽  
Nutrient Solution ◽  
Primary Root ◽  
Growth Period ◽  
Triticum Aestivum L ◽  
Solution Temperature ◽  
Stages Of Development ◽  
Primary Root Growth ◽  
Temperature And Growth ◽  
Nutrient Solutions

Primary root growth is very important for wheat (Triticum aestivum L.) crop in upland conditions in the State of São Paulo. Fourteen wheat genotypes (mutant lines and cultivars) were evaluated for primary root growth during 7 and 15 days of development in complete and aerated nutrient solutions, in the laboratory. In the first experiment, solutions with three pH values (4.0, 5.0 and 6.0) at constant temperature (24 ± 1°C), and in the second experiment, solutions with the same pH (4.0) but with three temperatures (18°C ± 1°C, 24°C ± 1°C and 30°C ± 1°C) were used. High genetic variability was observed among the evaluated genotypes in relation to primary root growth in the first stages of development in nutrient solutions independent of pH, temperature and growth period. Genotypes 6 (BH-1146) and 13 (IAC-17), tolerant to Al3+ showed genetic potential for root growth in the first stages of development (7 and 15 days), regardless of nutrient solution temperature and pH. Genotypes 14 (IAC-24 M), 15 (IAC-24), 17 (MON"S" / ALD "S") ´ IAC-24 M2, 18 (MON"S" / ALD "S") ´ IAC-24 M3 and 24 (KAUZ"S" / IAC-24 M3), tolerant to Al3+, showed reduced root growth under the same conditions.

scholarly journals Effects of nutrition with varied forms of nitrogen on the growth of tomatoes in hydroponic cultures

2013 ◽  
Vol 34 (1) ◽  
pp. 137-148
Author(s):  
Z. Gumińska ◽  
J. Łokietek
Keyword(s):  
Nutrient Solution ◽  
Tomato Plant ◽  
Mineral Salts ◽  
Hydroponic Cultures

Ammonium saltpeter used in hydroponic nutrient solution instead of calcium saltpeter decreased the yield of tomatoes by 30%. A smaller (15,4%) decrease in yield was observed when ammonium saltpeter was used jointly with urea. The 50% reduction of light gave a considerable 60% drop in the yield. The levels of phosphorus and chlorophyll in leaves of tomatoes grown under the above conditions were considerably higher than in tomatoes cultivated in full light. All the tomato plant took up almost the same quantities of mineral salts.

scholarly journals Wpływ szczepów bakterii wyizolowanych z hydroponicznej uprawy sałaty (Lactuca sativa L.) na wzrost siewek sałaty, rosnących w obecnosci rożnych form pożywienia azotowego [Influence of bacterial strains isolated from hydroponic cultures of lettuce (Lactuca sativa L.) on the growth of lettuce seedlings growing in the presence of various forms of nitrogen nutrition]

2015 ◽  
Vol 32 (2) ◽  
pp. 195-206
Author(s):  
Z. Kobierzyńska-Gołąb
Keyword(s):  
Ammonium Nitrate ◽  
Nutrient Solution ◽  
Lactuca Sativa ◽  
Nitrogen Nutrition ◽  
Cultivated Plants ◽  
Bacterial Strains ◽  
Lactuca Sativa L ◽  
Hydroponic Cultures ◽  
Nutrient Solutions ◽  
Growth Of Seedlings

320 bacterial strains isolated from the surface of cultivated plants, as well as from other parts of hydroponic cultures showed stimulating (49 bacterial strains) or inhibitory (9 bacterial strains) properties in respect to the investigated plant. The following bacteria were isolated: <i>Pseudomonas, Flavobacterium, Agrobacterium, Achromobacter</i> and <i>Chromobacterium</i>. The effects of active bacterial strains on the growth of seedlings were investigated in dependence on the kind of inorganic form of nitrogen present in the nutrient solutions. The same bacterial strains exerted a stimulating effect on seedlings growing on nitrates, weaker stimulation was observed in cultures with ammonium nitrate; the growth of lettuce seedlings on nutrient solution with ammonium only, was, as a rule, inhibited by the bacteria.

Altered root growth and plant chemistry ofPinus sylvestris seedlings subjected to aluminum in nutrient solution

Trees ◽  
1996 ◽  
Vol 10 (3) ◽  
pp. 135-144 ◽  
Author(s):  
J. Oleksyn ◽  
P. Karolewski ◽  
M. J. Giertych ◽  
A. Werner ◽  
M. G. Tjoelker ◽  
...  
Keyword(s):  
Root Growth ◽  
Nutrient Solution ◽  
Plant Chemistry
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