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.

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 Effects of Nutrient Solution Concentration, Cultivars, and Culture Methods on Leaf Resistance of Tomato Plant

2021 ◽  
Vol 20 (2) ◽  
pp. 179-187
Author(s):  
Takeshi Sawamura ◽  
Yoshikazu Kiriiwa ◽  
Takeshi Miyako ◽  
Atsushi Kano ◽  
Katsumi Suzuki
Keyword(s):  
Nutrient Solution ◽  
Tomato Plant ◽  
Solution Concentration ◽  
Culture Methods ◽  
Leaf Resistance

scholarly journals Growth Analysis and Nutrient Solution Management of a Soil-Less Tomato Crop in a Mediterranean Environment

Data ◽  
2019 ◽  
Vol 4 (1) ◽  
pp. 38
Author(s):  
Angelo Signore ◽  
Francesco Serio ◽  
Pietro Santamaria
Keyword(s):  
Growth Rate ◽  
Nutrient Solution ◽  
Tomato Plant ◽  
Dry Matter ◽  
Growth Analysis ◽  
Nutrient Concentration ◽  
Plant Tissues ◽  
Mediterranean Environment ◽  
Tomato Crop ◽  
Northern European

The data contained in this article are strictly related to our previous article titled “A Targeted Management of the Nutrient Solution in a Soilless Tomato Crop According to Plant Needs” (Signore, A. et al. 2016). The detailed datasets regards the amount of dry matter (Table 1), the nutrient solution consumption (Table 2) and the mineral composition of plant tissues (Tables 3–7) in a soil-less tomato crop. The information contained in this article are necessary since, unlike the northern European countries, such data are generally missing for the crops in the Mediterranean environment. By correlating the parameters reported above, we were able to provide a more precise management of the nutrient solution, by providing the correct nutrient concentration into the nutrient solution in function of (i) the volume of water absorbed, (ii) the growth rate and (iii) the nutrient concentration in tomato plant. Finally, the more precise management of the nutrient solution allowed discharging a lesser amount of water and nutrients into the environment, improving the sustainability of the crop.

scholarly journals Porównawcze badania nad występowaniem bakterii w hydroponicznych uprawach sałaty (Lactuca sativa L.) z azotanowaą i amonową formą azotu w pożywce [Comparative studies on the occurrence of bacteria in hydroponic cultures of lettuce (Lactuca sativa L.) enriched with nitrate or ammonia forms of nitrogen in the nutrient medium]

2015 ◽  
Vol 32 (2) ◽  
pp. 185-193
Author(s):  
Z. Kobierzyńska-Gołąb
Keyword(s):  
Nitrogen Metabolism ◽  
Nutrient Solution ◽  
Lactuca Sativa ◽  
Comparative Studies ◽  
Nutrient Medium ◽  
Hydroponic Culture ◽  
Lactuca Sativa L ◽  
Air Space ◽  
Hydroponic Cultures ◽  
Number Of Bacteria

The experiment demonstrated the greatest number of bacteria on the surface of roots immersed in nutrient solution, next on the epidermis of the parts of roots remaining in the air space above the nutrient solution and on the roots growing in the seed-bed; a smaller number in the seed-bed itself and the smallest number in the nutrient solution. The population of bacteria consisted of up to 90% short rod of bacilli. The total number of bacteria in hydroponic culture with ammonium was higher than in that with nitrate. As a rule the bacteria belonging to the separate physiological groups, participating in nitrogen metabolism (ammonifying, proteolytic, proteinizing, denitrifying and oligonitrophilic bacteria) appeared to be more numerus in the culture with ammonium than in that with nitrate. The growth of plants in hydroponic culture with ammonium was weaker than in that with nitrate.

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 Agronomic and Economic Feasibility of Tomato and Lettuce Intercropping in a Soilless System as a Function of the Electrical Conductivity of the Nutrient Solution

HortScience ◽  
2017 ◽  
Vol 52 (9) ◽  
pp. 1195-1200 ◽  
Author(s):  
Tatiana Pagan Loeiro da Cunha-Chiamolera ◽  
Miguel Urrestarazu ◽  
Arthur Bernardes Cecílio Filho ◽  
Isidro Morales
Keyword(s):  
Electrical Conductivity ◽  
Nutrient Solution ◽  
Tomato Plant ◽  
Economic Feasibility ◽  
Plant Production ◽  
Moderate Increase ◽  
Cultivation System ◽  
Tomato Plants ◽  
Lettuce Yield

An intercrop is studied here as a new way of farming in soilless systems within a protected environment. To estimate the efficiency of intercropping in this cultivation system, an experiment was conducted to evaluate the effect of the electrical conductivity (EC) of the nutrient solution (2.0, 2.5, and 3.0 dS·m−1) on lettuce and tomato plants and on the agronomic and economic feasibility of the intercrop compared with monoculture. The results indicated that a moderate increase in EC from 2.0 to 3.0 dS·m−1 did not exert any important effect on tomato plant production or quality but did cause a decrease in lettuce yield in both the first and second crops. Intercropping was only feasible for lettuce when the tomato and lettuce plants were transplanted on the same day. The highest tomato (G class) and lettuce yields were achieved at an EC of 2.5 dS·m−1; this condition resulted in the highest intercrop profitability (0.53 €·m−2 more) when compared with tomato monoculture.

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