scholarly journals THE USE OF TREESHELTERS IN NURSERY PRODUCTION

HortScience ◽  
1992 ◽  
Vol 27 (6) ◽  
pp. 569g-570
Author(s):  
David W. Burger ◽  
Richard W. Harris ◽  
Pavel Svihra
Keyword(s):  
Carbon Dioxide Concentration ◽  
Dry Weight ◽  
Early Growth ◽  
Solution Culture ◽  
Fresh Weight ◽  
Nursery Production ◽  
Potential Benefits ◽  
Total Dry Weight ◽  
Outdoor Nursery ◽  
Total Fresh Weight

Treeshelters are translucent, polypropylene tubes that have been used in England for 10 years to improve the transplantation success and early growth of trees in the landscape. The focus of the presented research will be on the use of treeshelters in producing plants in the container nursery. The results from outdoor nursery and greenhouse, solution culture experiments will be presented. Treeshelters increase the temperature, relative humidity, and carbon dioxide concentration around those plants growing in them. Photosynthetically active radiation (PAR) inside shelters is reduced 40-60% depending on treeshelter color. Plants growing in treeshelters show increases in height and in the ratio between total fresh weight and total dry weight. However, plants growing in treeshelters also show decreases in leaf, stem, and root fresh and dry weights and leaf area. The potential benefits and current challenges surrounding the use of treeshelters will be discussed.

scholarly journals Monosporic Inoculation of Economically Important Horticultural Species with Native Endomycorrhizae under Greenhouse Conditions

Agronomy ◽  
2019 ◽  
Vol 9 (3) ◽  
pp. 130
Author(s):  
Flor Hernandez ◽  
Rosalinda Villarreal ◽  
Valentin Torres ◽  
Adrien Gallou
Keyword(s):  
Mycorrhizal Fungi ◽  
Agricultural Intensification ◽  
Arbuscular Mycorrhizal ◽  
Dry Weight ◽  
Phosphorus Concentration ◽  
Root Weight ◽  
Fresh Weight ◽  
Flower Number ◽  
Total Dry Weight ◽  
Total Fresh Weight

Research into the symbiotic relationship between plants and arbuscular mycorrhizal fungi (AMF) is key for sustainable agricultural intensification. The objective of the present study is to evaluate native AMF at the monosporic level in greenhouse-grown, economically important crops. Agricultural soil samples from three locations (Saltillo, Zaragoza, and Parras) were obtained by combining portions resulting from a zigzag sampling pattern. From these samples, 15 morphotypes were extracted according to a modified Gerdemann’s technique and monosporically inoculated on melon, cucumber, tomato, and onion, 30 days after their sowing. Under a completely random experimental design, 16 treatments with three repetitions were defined. Plant height, root length, stem diameter, total fresh weight, fresh root weight, dry root weight, bulb weight, fresh leaf weight, total dry weight, flower number, leaf number, fruit number, spore number, and percentage of colonization were all evaluated. The results were subjected to the analysis of variance (ANOVA) and the Tukey comparison test (p ≤ 0.05), which showed that the monosporic inoculation favors significantly the AMF and the host, while the T6 (Saltillo spore + Steiner modified with 20% of the normal phosphorus concentration) showed a greater response uniformity on onion and melon, which indicates its great potential as an inoculum.

scholarly journals Assessment of Growth and Biomass Production of a Medicinal Plant Bryophyllum Salisb. as Influenced by Different Organic Manures

2020 ◽  
Vol 29 (2) ◽  
pp. 229-236
Author(s):  
AT Sharif ◽  
AS Razzaque ◽  
TT Purna ◽  
Md Khalilur Rahman
Keyword(s):  
Growth Performance ◽  
Biomass Production ◽  
Dry Weight ◽  
Bone Meal ◽  
Fresh Weight ◽  
Organic Manures ◽  
Total Dry Weight ◽  
Compost Treatment ◽  
Number Of Branches ◽  
Total Fresh Weight

A pot experiment was carried out to evaluate the influence of various organic manures on the growth performance and biomass production of Bryophyllum pinnatum. Nine kinds of organic manures, such as ACI, BGF-1, bone meal, Green life, Kazi, Majim, mustard cake, Payel and Shebok composts were applied individually at the rate of 15 ton/ha. Highest height (45.25 cm), leaf number (102.67 no./plant), leaf area (82.43 cm2/plant), number of branches (27.00 no./plant), girth (6.75 cm/plant), total fresh weight (334.02 g/plant) and total dry weight (86.09 g/plant) were recorded in mustard cake compost treatment at harvest. Results showed that the best growth performance and biomass production both were achieved by mustard cake compost treatment. Dhaka Univ. J. Biol. Sci. 29(2): 229-236, 2020 (July)

scholarly journals Shea (Vitellaria paradoxa C. F. Gaertn.) Seedlings Showed Impressive Recovery after Defoliation

2015 ◽  
Vol 37 ◽  
pp. 61-70 ◽  
Author(s):  
F.D. Ugese ◽  
P.T. Ezechukwu ◽  
C. Ogbaje
Keyword(s):  
Seed Size ◽  
Dry Matter ◽  
Dry Weight ◽  
Shea Butter ◽  
Fresh Weight ◽  
Randomized Design ◽  
Whole Plant ◽  
Total Dry Weight ◽  
Seedling Characters ◽  
Total Fresh Weight

Experiments to determine the effect of seed size, watering interval and defoliation on growth and dry matter attributes of seedlings of shea butter tree were conducted at Makurdi, Nigeria, from July 2010 to April, 2012. In the first experiment, treatments were made up of three seed size categories described as small (5-10g), medium (11-15g) and large (16-20g) and three watering intervals of 3, 6 and 9 days. In the second experiment, treatments comprised three watering intervals of 3, 6 and 9 days and three levels of defoliation – 0, 50 and 100%. In both experiments, factorial combinations of the treatments were laid out in completely randomized design (CRD) and replicated three times. Results of analysis of variance showed that in the first experiment seed size significantly influenced root length with the medium and large seeds producing seedlings with comparatively longer roots than the small seeds. The most frequently watered seedlings (3 and 6 days) produced more leaves than those watered less frequently (9 days). Seed size influenced dry weight of root and total (whole plant) dry weight with the medium and large seeds recording significantly higher values than the small seeds. Watering interval however did not significantly influence any of the other traits. Seed weight exerted significant influence on amount of dry matter partitioned to the stem and the root. More dry matter was partitioned to the stem by the small seeds. Conversely, medium and large seeds allocated more dry matter to the root than to the stem. In the second experiment, defoliation level only influenced total fresh weight, dry weight of root and total dry weight in favour of plants with half their leaves removed. None of the traits examined were significantly influenced by watering regime. Interaction between defoliation level and watering regime significantly influenced total fresh weight, dry weight of root and total dry weight. Generally seed size had more influence on seedling characters than watering interval. Seedlings also demonstrated remarkable ability to overcome effects of defoliation.

scholarly journals 774 PB 360 THE RESPONSE OF IRIDON CHRYSANTHEMUMS TO DIFFERENT KINDS OF GROWTH REGULATORS

HortScience ◽  
1994 ◽  
Vol 29 (5) ◽  
pp. 543e-543
Author(s):  
Eddie B. Williams ◽  
William F. Hayslett ◽  
Sabrina L. Shaw
Keyword(s):  
Plant Height ◽  
Growth Regulators ◽  
Initial Treatment ◽  
Dry Weight ◽  
Water Soluble ◽  
The Other ◽  
Trimethylammonium Chloride ◽  
Fresh Weight ◽  
Total Dry Weight ◽  
Total Fresh Weight

Growth regulators were applied on Iridon Chrysanthemums during the month of January, 1993 to determine their response. The growth regulators used were uniconizole, [(E)-(+)-(S)-I-(4-chlorophenyl)-4,4 dimethyl-2-(1,2,4-trazol-lyl)-1-pent-lene-3-01],daminozide [(butanedoic acid mono (2,2dimethyl hydraide)], ancymidol [a-cyclopropyl-a-(p-methoxy-phenyl)-5-pyridinemethanol] and chlormequat* (2-chloroethyl) trimethylammonium chloride (not labeled for mums). The daminozide treated plants received a second application 14 days after the initial treatment. Peters 20-20-20 NPK water soluble all purpose fertilizer were used for all treatments. There were significant differences in plant height, total fresh weight, total dry weight, total number of flowers, and total number of buds due to treatment. Uniconizode had the greatest effect on plant height, and the other parameters observed. Although there were differences between the uniconizide and daminozide treated plants for number of flowers and number of buds, these differences were not significant.

scholarly journals Growth and Ginsenosides Content of Ginseng Sprouts According to LED-Based Light Quality Changes

Agronomy ◽  
2020 ◽  
Vol 10 (12) ◽  
pp. 1979
Author(s):  
Yoon-Jeong Kim ◽  
Thi Kim Loan Nguyen ◽  
Myung-Min Oh
Keyword(s):  
Photosynthetic Rate ◽  
Dry Weight ◽  
Fresh Weight ◽  
Light Spectra ◽  
Fluorescent Lamps ◽  
Total Saponin ◽  
R Ratio ◽  
Saponin Content ◽  
One Year ◽  
Total Fresh Weight

This study investigated growth and ginsenosides content of ginseng sprouts under various light spectra. One-year-old ginseng seedlings were cultivated under various light treatments including: monochromatic (red (R), green (G), and blue (B)), various RB and RGB combinations, white (fluorescent lamps (FL) and natural white (NW)), and supplemental far red (FR). R and high R ratio increased growth characteristics of ginseng sprouts (excepted for root dry weight). The replacement of G for B in RGB group and W group did not increase the growth, and supplemental FR increased shoot and root fresh weights, total fresh weight, and leaf area. R had 1.5 times higher photosynthetic rate compared to B and G, and R8G1B1 and R9G1B0 showed the highest values in RGB group; whereas the RB, W, and FR groups did not enhance photosynthetic rate. B and high B ratio increased shoot saponin and ginsenosides, total saponin and ginsenosides contents. Total saponin content in shoot was 4.4 times higher than that in root. The supplemental FR enhanced both total saponin and ginsenosides contents. In conclusion, NW + FR showed the highest total fresh weight, saponin and ginsenosides contents among all treatments, suggesting that supplementation of FR has a positive effect on ginseng sprouts grown in plant factories.

Effects of subsoil calcium on the root growth of some lucerne genotypes (Medicago sativa L.) in acidic soil profiles

1977 ◽  
Vol 28 (4) ◽  
pp. 629 ◽  
Author(s):  
JR Simpson ◽  
A Pinkerton ◽  
J Lazdovskis
Keyword(s):  
Root Growth ◽  
Lower Layer ◽  
Dry Weight ◽  
Solution Culture ◽  
Acidic Soil ◽  
Root Penetration ◽  
Soil Calcium ◽  
Medicago Sativa L ◽  
Total Dry Weight ◽  
Final Harvest

The root growth of lucerne was examined in an acidic soil profile modified by varying additions of calcium carbonate to different layers of the subsoil. Root growth responded strongly to changes in the concentration of exchangeable soil calcium. Symptoms of thickening, distortion and poor lateral formation occurred under low calcium treatments. The results were in agreement with the interacting effects of calcium (at 0.5–5.0mM) and aluminium ions (at 0–20,µM) on lucerne in separate solution culture experiments. Differences in root penetration were observed between three lucerne clones selected from the cultivars Hunter River and Siro Peruvian. At the first harvest, the magnitude of these differences was increased by the addition of lime to the profiles. The three genotypes produced similar total dry weight yields, but differed in their distribution of growth between shoots and roots. This distribution was not affected by the addition of lime to the subsoil. However, the length of roots in the lower layer of the profile ( > 60 cm depth) was more responsive to subsoil treatment than was total dry weight. At the final harvest, the shoot yields of two genotypes were affected by lime treatments, but that of the deepest-rooted genotype was not. The results suggest that improved genotypes could be selected from Australian lucernes for establishment in areas with acidic subsoils, but that selection on root penetration alone would not necessarily lead to increased shoot yields.

scholarly journals Uji Daya Simpan dan Efektivitas Prototipe Pupuk Hayati Mikoriza dengan Media Pembawa Pasir Vulkanik dan Pasir Laut

2020 ◽  
Vol 10 (2) ◽  
pp. 165
Author(s):  
KADEK JUNIARI ◽  
I NYOMAN RAI ◽  
I MADE SUKEWIJAYA
Keyword(s):  
Block Design ◽  
Dry Weight ◽  
Study Time ◽  
Corn Cob ◽  
Fresh Weight ◽  
Randomized Block Design ◽  
Sea Sand ◽  
Total Dry Weight ◽  
Biological Fertilizer ◽  
Better Than

Time Storage and Effectivity of the Prototype of Mychorrhiza Biological Fertilizer with Volcanic and Sea Sand as the Carrier Media.  This research aimed to study time storage and the efectivity of prototype of mychorrhiza biological fertilizer with volcanic and sea sand as the carrier media. The study was arranged using a randomized block design with 2 factors. The first factor was carrier media of mychorrhiza spore consist of 2 levels i.e. volcanic and and sea sand, and the second factor was time storage of prototype of mychorrhiza biological fertilizer consist of 3 levels i.e. 1, 2, and 3 month. The result of research showed that volcanic sand carrier media was better than the sea sand media proved by higher total dry weight. The best time storage of prototype of mychorrhiza biological fertilizer in this research was 1 month indicated by the highest amount of spores after storage. The interaction between carrier media and time storage gave significantly different just to stem diamater and fresh weight of corn cob.

scholarly journals Comparison of an Antitranspirant Spray, a Polyacrylamide Gel, and Wind Protection on Early Growth of Muskmelon

HortScience ◽  
2006 ◽  
Vol 41 (2) ◽  
pp. 361-366 ◽  
Author(s):  
Laurie Hodges ◽  
Entin Daningsih ◽  
James R. Brandle
Keyword(s):  
Plant Growth ◽  
Leaf Area Index ◽  
Leaf Area ◽  
Field Experiments ◽  
Block Design ◽  
Dry Weight ◽  
Early Growth ◽  
Polyacrylamide Gel ◽  
Fresh Weight ◽  
Area Index

Field experiments were conducted over 4 years to evaluate the effects of antitranspirant (Folicote, Aquatrol Inc., Paulsboro, N.J.) and polyacrylamide gel (SuperSorb, Aquatrol Inc., Paulsboro, N.J.) on early growth of transplanted muskmelon grown either protected by tree windbreaks or exposed to seasonal winds. A randomized complete block design (RCBD) with split plot arrangement was used with wind protection (sheltered and exposed) areas as the main treatment and use of an antitranspirant spray or gel dip as subtreatments. Based on destructive harvests in the field, treatments and subtreatments did not affect dry weight or leaf area index in the first 2 years. Specific contrasts, however, showed that gel application significantly increased fresh weight, dry weight, and leaf area index over that of the untreated transplants whereas the spray application tended to reduce these factors during the first 3 weeks after transplanting. Significant differences between gel and spray subtreatments disappeared by 5 weeks after transplanting. Shelterbelts ameliorated crop microclimate thereby enhancing plant growth. Significantly, wind velocity at canopy height was reduced 40% on average and soil temperatures were about 4% warmer in the sheltered plots compared to the exposed plots during the first 5 weeks post-transplant. Muskmelon plants in the sheltered areas grew significantly faster than the plants in the exposed areas in 2 of the 3 years reported, with the 3-year average fresh weight increased by 168% due to wind protection. Overall transplanting success and early growth were enhanced the most by wind protection, followed by the polyacrylamide gel root dip, and least by the antitranspirant foliar spray. We conclude that microclimate modification by wind speed reduction can increase early muskmelon plant growth more consistently than the use of polyacrylamide gel as a root dip at transplanting or the use of an antitranspirant spray. A polyacrylamide gel root dip generally will provide more benefit during early muskmelon growth than the use of an antitranspirant spray.

scholarly journals Salicylic acid and its method of application affect germination and vigor in bell pepper seedlings under salt stress

2020 ◽  
Vol 16 (6) ◽  
pp. 101-110
Author(s):  
Sebastião de Oliveira Maia Júnior ◽  
Jailma Ribeiro de Andrade ◽  
Ronaldo do Nascimento ◽  
Robson Felipe de Lima ◽  
Elka Costa Santos Nascimento ◽  
...  
Keyword(s):  
Salicylic Acid ◽  
Oxygen Demand ◽  
Dry Weight ◽  
Nacl Stress ◽  
Bell Pepper ◽  
Seedling Length ◽  
Relative Water ◽  
Potential Benefits ◽  
Total Dry Weight ◽  
Germination And Growth

This study investigated the effect of two salicylic acid application methods (seed immersion and wetting) on the germination and growth characteristics ofcv. All Big bell pepper seedlings exposed to 0 or 100 mM of NaCl.The experimentwas conducted in aBiochemical Oxygen Demand (BOD)incubator, using a completely randomized designwith eight treatments (immersionin salicylic acid or distilled water and wettingwith salicylic acid or water, in conjunction with 0 or 100 mMof NaCl) and four repetitions.The results indicated that under non-salineconditions, wetting with salicylic acid (SA) inhibited germination and seedling length, whereas NaCl stress reduced the germination, growth, total dry weight and vigor of seedlings.However, SA application, especially by wetting, mitigated the toxic effects of NaCl in bell pepper seedlings,improving relative water content and radicle length, as well as total length, dry weight and vigor.This study highlights the potential benefits of SA, particularly when applied via wetting, in attenuating phytotoxicity caused by NaCl stress and its effect on the germination, growth and vigor of bell pepper seedlings.

Interaction of soil pH and genotype on growth and nutrient uptake of sycamore seedlings

1982 ◽  
Vol 12 (3) ◽  
pp. 627-631
Author(s):  
P. E. Pope
Keyword(s):  
Nutrient Uptake ◽  
Soil Ph ◽  
Dry Weight ◽  
Soil Reaction ◽  
Growth Responses ◽  
Prime Concern ◽  
Nursery Production ◽  
Improvement Programs ◽  
Total Dry Weight ◽  
Highly Correlated

Seedlings from four families of American sycamore (Platanusoccidentalis L.) were grown in a glasshouse for 16 weeks in a Groseclose silt loam soil (Typic Hapludults) in which the soil reaction (pH) had been adjusted from 6.20 to 4.25, 5.50, 6.75, or 8.00 by the addition of Al2(SO4)3 or CaCO3. On the average, seedling height and total dry weight increased with increasing soil reaction to pH 6.7 and then declined. Percentage of foliar P, K, and Ca was largest at a soil pH of 5.5 and declined with an increase or decrease in soil reaction. Foliar P, K, and Ca content is highly correlated with soil pH, seedling total dry weight, and available soil nutrients. Growth of seedlings from individual families, in response to alterations in soil pH, is variable, but the data suggest certain families exhibit significantly greater growth and nutrient uptake than others at soil pH values below 6.8. This fact may be of prime concern in hardwood seedling nursery production, where specific families are being grown, and in the evaluation of growth responses in tree improvement programs.

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