Rapid assessment of the rate of nitrogen immobilisation in organic components of potting media: II. Nitrogen drawdown index and plant growth

1992 ◽  
Vol 23 (3-4) ◽  
pp. 217-230 ◽  
Author(s):  
Kevin A. Handreck
Keyword(s):  
Plant Growth ◽  
Rapid Assessment ◽  
Organic Components ◽  
Nitrogen Immobilisation ◽  
Potting Media

Wheat regenerants in the system of rapid assessment of the effect of 24-epibrassinolide

Biomics ◽  
2020 ◽  
Vol 12 (3) ◽  
pp. 394-397
Author(s):  
Seldimirova O.A. ◽  
M.V. Bezrukova ◽  
N.N. Кruglova ◽  
F.М. Shakirova
Keyword(s):  
Plant Growth ◽  
Experimental Model ◽  
Plant Growth Regulators ◽  
Growth Regulators ◽  
Drought Resistance ◽  
Rapid Assessment ◽  
Immature Embryo ◽  
Model System ◽  
Wheat Cultivars ◽  
Experimental Model System

The influence of 24-epibrassinolide on the efficiency of regenerants obtained from embryonic calli formation was studied in wheat cultivars contrast for drought resistance. The possibility of using the experimental model system «immature embryo – embryonic callus – regenerant» in the rapid assessment of the effect of antistress plant growth regulators is shown.

scholarly journals EFFICACY OF SOLID WASTE COMPOST AS A PROPAGATION MEDIUM

HortScience ◽  
1990 ◽  
Vol 25 (9) ◽  
pp. 1107g-1107
Author(s):  
S. D. Verkade ◽  
G. E. Fitzpatrick
Keyword(s):  
Solid Waste ◽  
Agricultural Production ◽  
Vegetative Reproduction ◽  
Root Weight ◽  
Dade County ◽  
Organic Components ◽  
Landscape Plants ◽  
Potting Media ◽  
Propagation Medium ◽  
Media Data

The availability of organic components of potting media is limited due to supply and shipping costs. Disposal of solid waste has also become a serious problem for many municipalities. The utilization of solid waste compost in agricultural production promises to be a solution for both concerns. The objective of this experiment was to determine the efficacy of sol id waste compost from Miami, Dade County, Florida as a propagation medium for vegetative reproduction of ornamental and landscape plants.Cuttings of Podocarpus macrophylla, Chrysobalanus icaro, and Impatiens spp. 1-13 cm long, treated with .2% NAA ppm IBA were rooted in media composed of sphagnum peatmoss: perlite (1:1) or Agrisoil (TM) solid waste compost: perlite (1:). Cutting rooted well in both media. Data included number of roots and root weight.

scholarly journals Variability in Plant Growth in Retail Potting Media

2006 ◽  
Vol 16 (1) ◽  
pp. 7-12 ◽  
Author(s):  
Amanda Wiberg ◽  
Richard Koenig ◽  
Teresa Cerny-Koenig
Keyword(s):  
Plant Growth ◽  
Chemical Properties ◽  
Assessment Tools ◽  
Plant Performance ◽  
Physical And Chemical Properties ◽  
Growth Responses ◽  
Potting Media ◽  
Complete Fertilizer ◽  
Physical And Chemical ◽  
And Chemical Properties

There is extensive variability in physical and chemical properties among brands of retail potting media. The purpose of this study was to assess variability in seed germination and plant growth responses among and within brands. Twenty-four different brands of media, and multiple bags of five brands, were purchased at nine retail stores. Tomato (Lycopersicon esculentum) seeds were germinated in 11 different brands of media and in media from different bags of four of the same brands. Marigold (Tagetes erecta) and petunia (Petunia×hybrida) were grown to flowering in 10 brands of media. Germination varied significantly among media brands and among bags of one of the brands. Plant performance also varied significantly, with several of the brands producing plants with few flowers, long times to flowering, and low shoot and root dry weights even though all treatments received uniform applications of a complete fertilizer solution three times per week. Few relationships could be discerned between individual physical and chemical properties of the media and plant performance. Results indicate improvements in quality among brands and quality control within brands are needed in the retail potting media industry. Quality assessment tools emphasizing plant performance could improve overall media quality.

scholarly journals MODEL SYSTEM “EMBRYO-CALLUS-REGENERANT” IN WHEAT FOR THE RAPID ASSESSMENT OF THE EFFECT OF 24‑EPIBRASSINOLIDE

ÈKOBIOTEH ◽  
2020 ◽  
Vol 3 (3) ◽  
pp. 331-336
Author(s):  
N.N. Kruglova ◽  
◽  
O.A. Seldimirova ◽  
M.V. Bezrukova ◽  
F.M. Shakirova ◽  
...  
Keyword(s):  
Plant Growth ◽  
Experimental Model ◽  
Plant Growth Regulators ◽  
Growth Regulators ◽  
Drought Resistance ◽  
Rapid Assessment ◽  
Immature Embryo ◽  
Model System ◽  
Wheat Cultivars ◽  
Experimental Model System

The influence of 24-epibrassinolide on the efficiency of regenerants obtained from embryonic calli formation was studied in wheat cultivars contrast for drought resistance. The perspectivity of using the experimental model system «immature embryo – embryonic callus – regenerant» in the rapid assessment of the effect of antistress plant growth regulators is shown.

scholarly journals Optimum Soluble and Slow-release N Rates for Rhododendrons and the Fate of Such N Applied to Various Potting Media

HortScience ◽  
1995 ◽  
Vol 30 (4) ◽  
pp. 794E-794
Author(s):  
Thomas M. Rathier
Keyword(s):  
Plant Growth ◽  
Slow Release ◽  
N Uptake ◽  
Plant Quality ◽  
Pine Bark ◽  
Factorial Experiments ◽  
Total N ◽  
Coated Urea ◽  
Potting Media ◽  
N Rates

Two year-long, factorial experiments were conducted on Rhododendron catawbienses (cv. Roseum elegans) grown in 2.3-liter plastic pots. I) Annual N rates of 0, 0.4, 0.8, 1.6, and 3.2 g/pot were applied as NH4NO3 (SBL) or sulfur-coated urea (SR) to plants potted in a composted hardwood bark (CHB)/peatmoss (P)/sand (S) medium. Plant growth and quality was best at 0.8 g N/pot for SBL and 1.6 and 3.2 g N/pot for SR. II) Annual N rates of 0.8 (SBL) and 2.4 (SR) g/pot were chosen as optimum rates and applied to plants potted in the following media: pine bark (PB)/P/S; CHB/P/S; P/S; and PB/CHB/P/S. Plant growth and N uptake was best in PB/PS. Plant quality was best in P/S. NO3 in leachate did not differ among media, but was greater in SBL. Total N immobilized in media was greater in PB/CHB/P/S. N recovered from SR-treated pots as unused fertilizer did not differ among media. Total applied N recovered was 90% for SBL and 51% for SR.

Glomus intraradix effects on citrus rootstock seedling growth in various potting media

1992 ◽  
Vol 118 (3) ◽  
pp. 315-323 ◽  
Author(s):  
S. Nemec
Keyword(s):  
Plant Growth ◽  
Linear Models ◽  
Fine Sand ◽  
Root Weight ◽  
Sour Orange ◽  
Rough Lemon ◽  
Wood Shavings ◽  
Citrus Rootstock ◽  
Potting Media ◽  
Glomus Intraradix

SUMMARYFive potting media components mixed in various combinations and in various percentages of one with another (0, 14·3, 29, 42, 57, 71 and 100% by volume of the second component with the first) were inoculated with Glomus intraradix in six experiments. Seedlings of citrus rootstocks were grown from seed in these mixes. Sour orange in inoculated peat plus vermiculite, Astatula fine sand plus vermiculite, and peat plus Perlite® in all percentage combinations grew c. two- to threefold taller than noninoculated control plants. Up to twofold growth increases of sour orange occurred in vermiculite amended with wood shavings. The best evidence for fungus-mediated plant growth occurred in Astatula fine sand amended with 29–71% Perlite, and the roots in that combination had the highest percentage of infection. In another experiment in which Astatula fine sand was amended with up to 16% of an acid peat, ratios of inoculated rough lemon plant growth to controls decreased as the peat content in the medium increased. Top and root weight ratios of inoculated:control seedlings in the six experiments did not fit four simple linear models.

AERATION OF POTTING MEDIA AND PLANT GROWTH

Soil Science ◽  
1986 ◽  
Vol 141 (6) ◽  
pp. 438-441 ◽  
Author(s):  
G. J. BUGBEE ◽  
C. R. FRINK
Keyword(s):  
Plant Growth ◽  
Potting Media
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