MONITORING OF THE CHANGE IN FRESH WEIGHT OF PLANTS GROWN IN WATER CULTURE

1996 ◽  
pp. 413-418 ◽  
Author(s):  
M. Takaichi ◽  
H. Shimaji ◽  
T. Higashide
Keyword(s):  
Fresh Weight ◽  
Water Culture

scholarly journals Effects of Seeding Pattern and Cultivar on Productivity of Baby Spinach (Spinacia oleracea) Grown Hydroponically in Deep-Water Culture

Horticulturae ◽  
2019 ◽  
Vol 5 (1) ◽  
pp. 20 ◽  
Author(s):  
Daniel Janeczko ◽  
Michael Timmons
Keyword(s):  
Seed Germination ◽  
Deep Water ◽  
Spinacia Oleracea ◽  
Expanded Polystyrene ◽  
Fresh Weight ◽  
Water Culture ◽  
Canopy Density ◽  
Bench Scale

Baby spinach (Spinacia oleracea) was grown in a bench-scale deep-water culture (DWC) system in expanded polystyrene (EPS) plug trays. Two experiments were performed. In the first, different seeding patterns, [1-2-1-2…] or [3-0-3-0…] seeds per sequential cell, at the same overall density per tray, were compared to evaluate the potential of an EPS tray designed with fewer cells, but sown with more seeds per cell (to preserve canopy density). Using such a flat would lower growing substrate requirements. Seeding in the [3-0-3-0…] pattern reduced seed germination, but only by 5%. Harvested fresh weight was also less numerically in the [3-0-3-0…] pattern but not statistically. The second experiment observed cultivars Carmel, Seaside and Space grown concurrently. Carmel had the highest germination, nearly 100%, which was significantly greater than Seaside but not Space. Germination for Space was not significantly different from that of Seaside. Carmel also had the highest harvested fresh weight but was not significantly different from Space; both Carmel and Space produced significantly more harvested fresh weight than Seaside.

Growth and yield of orange (Washington Navel 141) grafted on different citrus rootstocks

2020 ◽  
Vol 12 (3) ◽  
Author(s):  
Alaa Suhiel Ibrahim
Keyword(s):  
Soluble Solids ◽  
Growth And Yield ◽  
Sour Orange ◽  
Fresh Weight ◽  
Experimental Station ◽  
Section Area ◽  
Washington Navel ◽  
Orange Trees ◽  
Cleopatra Mandarin ◽  
Troyer Citrange

Abstract. This investigation was conducted during 2014, 2015 and 2016 in the field of the citrus experimental station in Ciano, the general corps of scientific agricultural researches. The growth and yield of orange trees (Washington navel 141) budded on seven citrus rootstocks (Sour orange, Troyer citrange, Carrizo citrange, Citrumelo 4475, Citrumelo 1452, Macrophylla and Cleopatra mandarin) and farmed since 1989 have been studied. The results for the average of yield showed that the trees grafted on Cleopatra mandarin (58.33 kg. tree-1) were significantly superior to those grafted on Macrophylla (34.17 kg. tree-1). Orange trees grafted on Citrumelo 4475 and Citrumelo 1452 were significantly superior to other treatments in trunk section area of the rootstock (922.41 and 841.02 cm2, respectively). The greatest fruit fresh weight was in trees grafted on Citrumelo 4475 (284.85 g. fruit-1) which were significantly superior to those grafted on Carrizo and Troyer citrange (232.49 and 236.06 g. fruit-1, respectively). The biggest total soluble solids (%) was in trees grafted on Carrizo and Troyer citrange (12.83% for both treatments) which were significantly superior to those grafted on Sour orangе and Macrophylla (11.5% for both treatments), while the greatest total acids (%) was by Sour orange (2.08%) without significant differences.

Fluoride Injury to Cut `Samantha' Roses May Be Reduced by Pulsing with Calcium Nitrate

HortScience ◽  
1990 ◽  
Vol 25 (10) ◽  
pp. 1270-1271 ◽  
Author(s):  
Caroline H. Pearson-Mims ◽  
Virginia I. Lohr
Keyword(s):  
Weight Gain ◽  
Calcium Nitrate ◽  
Flower Longevity ◽  
Fresh Weight ◽  
Flower Opening ◽  
Visual Symptoms ◽  
Flower Quality ◽  
Nitrate Pulse ◽  
Solution Uptake ◽  
Preservative Solutions

Cut `Samantha' roses (Rosa hybrida L.) were placed in deionized water or a 20-mm Ca(NO3)2 pulsing solution for 72 hours. Flowers then were held in preservative solutions containing 0 or 4 mg fluoride/liter. Fresh weight gain, solution uptake, degree of flower opening, and flower longevity were reduced in the presence of fluoride in the holding solution. Visual symptoms of injury and reduced flower quality also were noted in treatments with fluoride. Pulsing improved fresh weight gain and degree of opening of flowers held in solutions containing fluoride. Pulsing also delayed the onset of visual symptoms of fluoride injury. Water uptake for flowers that were pulsed and exposed to fluoride was not different from uptake for flowers exposed to fluoride alone. Flower longevity for roses in all treatments was increased by using the calcium nitrate pulse, but pulsed flowers in fluoride did not survive as long as the control flowers.

Hydroponic Greenhouse Production of Fresh-market Basil in Colorado

HortScience ◽  
1998 ◽  
Vol 33 (3) ◽  
pp. 480f-481
Author(s):  
C. Elizabeth Succop ◽  
Steven E. Newman
Keyword(s):  
Nutrient Solution ◽  
Root Zone ◽  
Organic Fertilizer ◽  
Fresh Weight ◽  
Organic Solution ◽  
Fresh Market ◽  
Greenhouse Production ◽  
Raised Bed ◽  
Certified Organic ◽  
Organic Produce

Fresh-market basil has become a viable greenhouse commodity in Colorado. Marketing pressures and profit advantages also encourage the production of certified organic produce. The research objectives were to determine the length of time basil plants were productive in the greenhouse and to compare the production of fresh-market basil grown with three root zone systems and two fertilizer treatments. The three systems were hydroponic rockwool slab culture, hydroponic perlite raised bed culture, and hydroponic peat/perlite/compost bag culture. The two types of hydroponic fertilizer treatments were a salt-based formulated nutrient solution and an organic solution consisting of fermented poultry compost, hydrolized fish emulsion, and soluble kelp. The plants were harvested once per week for fresh weight determination. The results from the two runs show greater productivity for the plants in the perlite system as well as the bag mix system when fertilized with the organic fertilizer compared to salt-based fertilizer. However, productivity of the plants in the rockwool system was greater with the salt-based treatment compared to the organic treatment.

Sensitivity of Selected Vegetable and Weed Seedlings to Ultraviolet-B Radiation

HortScience ◽  
1998 ◽  
Vol 33 (3) ◽  
pp. 480e-480
Author(s):  
Nancy H. Furness ◽  
Mahesh K. Upadhyaya ◽  
Douglas P. Ormrod
Keyword(s):  
Brassica Oleracea ◽  
Leaf Area ◽  
Spinacia Oleracea ◽  
Relative Sensitivity ◽  
Amaranthus Retroflexus ◽  
Ultraviolet B ◽  
Seedling Height ◽  
Fresh Weight ◽  
Stellaria Media ◽  
Green Foxtail

Relative sensitivity of selected vegetable and weed seedlings to ultraviolet-B (UV-B) radiation (280–320 nm) was investigated. Seedlings were grown for 4 weeks in a greenhouse, in chambers equipped with UV-B-emitting fluorescent tubes and Mylar (control) and cellulose acetate (UV-B) filters. UV-B radiation reduced seedling height, leaf area, and leaf fresh weight in tomato (Lycopersicon esculentum `Cour Di Bue'), broccoli (Brassica oleracea var. Italica `Purple Sprouting'), cabbage (Brassica oleracea var. Capitata `Red Drumhead'), and cucumber (Cucumis sativus `Straight Eight'), leaf area and leaf fresh weight in beet (Beta vulgaris `Cylindra' and `Early Wonder'), seedling height and leaf area in spinach (Spinacia oleracea `Long Standing Bloomsdale'), lettuce (Lactuca sativa ``Red Salad Bowl Everest') and `Savoy' cabbage, and seedling height in `Chinese Tip Top' cabbage and lettuce (`Saladin'). `Winterton' cabbage was not affected. UV-B radiation decreased leaf area and leaf fresh weight in common chickweed (Stellaria media) and corn spurry (Spergula arvensis) and seedling height in green foxtail (Setaria viridis) and redroot pigweed (Amaranthus retroflexus). Tillering was stimulated in response to UV-B in green foxtail. There was no effect of UV-B on lady's-thumb (Polygonum persicaria) growth. Leaf number was not affected by exposure to UV-B in any species. The differential morphological sensitivity of vegetable and weed seedlings may result in altered competitive relationships under enhanced UV-B levels expected with the depletion of the earth's ozone layer.

Hydrothermic Treatment Effects on Some Ripening Changes on Mango Fruits (Mangifera indica L) Crillo de Bocado' during Storage: I. Physical Parameters

HortScience ◽  
1998 ◽  
Vol 33 (3) ◽  
pp. 520d-520
Author(s):  
Oswaldo Valor ◽  
Juan E Manzano
Keyword(s):  
Weight Loss ◽  
Skin Color ◽  
Storage Temperature ◽  
Mangifera Indica ◽  
Physical Parameters ◽  
Fresh Weight ◽  
Randomized Design ◽  
High Storage Temperature ◽  
High Storage ◽  
Green Stage

Mango fruits `Criollo de Bocado' harvested at the mature-green stage were treated with a hydrothermic treatment of 55 °C for 3 min and stored for 20 days to temperatures of 10 ± 2, 15 ± 2, and 28 ± 2 °C. A randomized design 2 × 3 × 4 with three replications was used. Physical parameters such as color (L*, a*, b*), firmnness, and fresh weight loss were studied. Results reported that mango fruits stored at 10.2 and 15.2 °C showed the highest firmness values. Skin color changed very fast during the first storage days, while pulp color required more time to achieve mature ripe color. Fresh weight loss tended to increase with storage time and with high storage temperature. The lowest storage temperture retarded softening in mango fruits and firmnness reached the highest values.

Yield Performance of Calocybe indica on Different Agricultural Subatrate

2016 ◽  
Vol 2 (3) ◽  
pp. 105
Author(s):  
Pinkal Patel ◽  
Ratna Trivedi
Keyword(s):  
Wheat Straw ◽  
Maximum Yield ◽  
Weight Basis ◽  
Biological Efficiency ◽  
Fresh Weight ◽  
Paddy Straw ◽  
Yield Performance ◽  
Fresh Weight Basis ◽  
Temperature And Humidity ◽  
Calocybe Indica

The Milky mushroom, Calocybe Indica was cultivated on different agricultural substrate, paddy straw, wheat straw, sugarcane trace and mango dry leaves. The spawning was done by sterilization of all the four substrate. The bags were kept in mushroom growing room with the maintenance of temperature and humidity 30̊ c-35̊ c and 70-80 % respectively. The minimum days requires for completion of spawn run (18.4 days), primordial formation (25.2 days) and days for first harvest (32.4 days) was first observed on cultivation with Paddy straw.  The maximum yield on fresh weight basis and biological efficiency (134.86 %) was also found to be as the same treatment with the Paddy straw as a substrate. The biological efficiency of wheat straw was at par with Sugarcane trace as substrate which was 85.07 % and 85.02 % respectively.

Comparison of Procedures for Isolation of Monoterpene Hydrocarbons from Fresh Needles of Picea abies and Picea omorica

2000 ◽  
Vol 65 (7) ◽  
pp. 1073-1081 ◽  
Author(s):  
Valerie Holubová ◽  
Iva Chvílíčková ◽  
Vlastimil Kubáň
Keyword(s):  
Picea Abies ◽  
Liquid Nitrogen ◽  
Steam Distillation ◽  
Extraction Efficiency ◽  
Total Content ◽  
Storage Conditions ◽  
Fresh Weight ◽  
Hexane Extraction ◽  
Monoterpene Hydrocarbons ◽  
And Storage

Extraction procedures (steam distillation, supercritical fluid extraction and solvent extraction) for isolation of monoterpene hydrocarbons from fresh needles of Picea abies and Picea omorica were optimised. The procedures were compared with the aim of minimizing consumption of needles and improving the extraction efficiency and repeatability. An influence of homogenisation procedures and storage conditions (liquid nitrogen, -18 and 4 °C) on the total content and composition of essential oils was studied. Cryogenic grinding (liquid nitrogen) combined with the extraction with cold hexane (extraction time 2 h) and subsequent GC-MS determination in freshly homogenised needles gives the best results (1.5-4 times better extraction efficiency, RSD < 10% for P. abies and < 25% for P. omorica). Limits of detections (3 S/N) for individual monoterpene hydrocarbons from units to tens of ng/g and recoveries 97.2-101.4% were found in fresh needles (calculated to fresh weight). While cooling to 4 °C is unacceptable, freezing at -18 °C for the period of 18 days in the dark gives also good results.

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