Porous geopolymer based eco-friendly multifunctional slow-release fertilizers for promoting plant growth

In a two-year vegetation experiment, the effects of fertilizer with two slow nutrient releasing mechanisms on the growth of outdoor grown potted chrysanthemums (Multiflora group Chrysanthemum × grandiflorum) as well as on their uptake of the nutrients N, P, K, were studied. In this experiment, coated fertilizer with a controlled nutrient release effect (CRF) – Basacote 6M and fertilizer with a slow soluble nutrients (SRF) – Lovogreen NPK were tested. In the control variant, Kristalon Blue fertilizer was regularly applied in a solution form. From this experiment, the suitability of a onetime application of a slow nutrient – releasing fertilizer to potted chrysanthemums was ascertained. The fertilizers with a slow nutrient release effect were shown to ensure better plant growth during vegetation as well as a higher biomass weight and nutrient consumption level. From the onset of vegetation, the highest rates of biomass growth and nutrient consumption by plants were evident in the (CRF) – Basacote 6M fertilizer treatment.

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Influence of Slow-release Fertilizer Source on Growth and Quality of Areca Palm, Chrysalidocarpus lutescens Wendl

Journal of Environmental Horticulture ◽

10.24266/0738-2898-6.1.7 ◽

1988 ◽

Vol 6 (1) ◽

pp. 7-9

Author(s):

F. D. Rauch ◽

P. Yahata ◽

P. K. Murakami

Keyword(s):

Plant Growth ◽

Slow Release ◽

Urea Formaldehyde ◽

Slow Release Fertilizer ◽

Slow Release Fertilizers ◽

Coated Urea ◽

Slow Growing ◽

Growing Crop

There was little difference noted in plant growth and quality of Areca palm, Chrysalidocarpus lutescens Wendl., when treated with three levels of several slow-release fertilizers at the manufacturer's recommended rates. The two resin-coated (RC) materials 18N-2.6P-10K and 17N-3.1P-10K (18-6-12 and 17-7-12) and urea formaldehyde (UF) fertilizer 10N-4.4P-8.3K (10-10-10) resulted in significantly better growth than either the isobutyledene diurea (IBDU) 20N-2.2P-4.2K (20-5-5) or the sulfur-coated urea (SCU) 14N-6P-12K (14-14-14) fertilizer sources. The RC materials were the least expensive fertilizers used in the production of this slow growing crop.

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A COMPARISON OF 12- TO 14- MONTH SLOW RELEASE FERTILIZERS IN AZALEA PRODUCTION

HortScience ◽

10.21273/hortsci.26.5.485a ◽

1991 ◽

Vol 26 (5) ◽

pp. 485a-485

Author(s):

Joseph Eakes ◽

John W. Olive

Keyword(s):

Electrical Conductivity ◽

Plant Growth ◽

Slow Release ◽

Fertilizer Application ◽

Pine Bark ◽

Peat Moss ◽

Growth Indices ◽

Potting Medium ◽

Slow Release Fertilizers ◽

First 90 Days

Five 12- to 14- month slow release fertilizers (Osmocote 17-7-12, Sierra 16-6-10, High-N 24-4-7, Sierrablend 17-7-10, and Nutricote 16-10-10 Type 360) were incorporated into a 3:1 pine bark: peat moss potting medium at one of 4 rates (0.9, 1.2, 1.5, and 1.8 kg N/m3). Plant growth of 3 azale a species, `Coral Bells' (Kurume), `Formosa' (Southern Indica), and `Pink Gumpo' (Satsuki), and monthly medium solution electrical conductivity (EC) were determined. Growth indices 180 days after applying fertilizer were greatest for plants receiving the Sierrablend and Osmocote fertilizers regardless of azalea species. Plant growth indices increased as N rate increased for the 3 azaleas, regardless of the fertilizer product. The highest media solution EC readings occurred during the first 90 days after fertilizer application for all fertilizer treatments and declined thereafter.

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