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PLA/Starch Composites: New Applications as Control Release Materials. [PDF]
Zhao Z +9 more
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STUDIES ON SLOW RELEASE FERTILIZERS
Soil Science, 1990Using first-order kinetics we describe the release of nutrients by coated slow-release fertilizer (SRF). Plotting the logarithm of the concentration of intact fertilizer in the soil [log(Q0 - Qt), where Qt, is the amount applied and Qt, is the amount released at time t] versus the time yielded a ...
MALKA KOCHBA +2 more
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New Slow-Releasing Molybdenum Fertilizer
Journal of Agricultural and Food Chemistry, 2008This paper describes a new water-insoluble molybdenum compound that has been developed as a slow-release fertilizer. The compound is an inorganic polymer formed by inclusion of molybdenum within a long-chain polyphosphate structure. It was designed by a process of "reverse engineering" of the molecule.
Siladitya, Bandyopadhyay +3 more
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Release Kinetic Models and Release Mechanisms of Controlled-Release and Slow-Release Fertilizers
ACS Agricultural Science and Technology, 2023Chanaka Sandaruwan +2 more
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Slow-release (GSSP) fertilizer [PDF]
Several compositions of matter have been discovered that can be used in the manufacture of slow-release fertilizers that contain all of the essential elements needed by plants and humans.
PALMER JAY W, KAY HEIDI
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Environmentally Friendly Slow-Release Nitrogen Fertilizer
Journal of Agricultural and Food Chemistry, 2011To sustain the further world population, more fertilizers are required, which may become an environmental hazard, unless adequate technical and socioeconomic impacts are addressed. In the current study, slow-release formulations of nitrogen fertilizer were developed on the basis of natural attapulgite (APT) clay, ethylcellulose (EC) film, and sodium ...
Boli, Ni +4 more
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A new slow-releasing iron fertilizer
Chemical Engineering Journal, 2009Abstract This paper describes the development of an environment-friendly, slow-release fertilizer of the micronutrient iron. The compound is water insoluble, and is based on a polymeric phosphate structure. Kinetics and solubility of products in the goethite [FeO(OH)]–H 3 PO 4 and [FeO(OH)]–MgO–H 3 PO 4 systems were studied at 170–300 °C ...
Partha K. Chandra +2 more
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Ureaform as a Slow Release Fertilizer: A Review
Zeitschrift für Pflanzenernährung und Bodenkunde, 1990AbstractUreaform (UF) is a condensation product between urea and formaldehyde consisting of short chains from methylene‐diurea to tetramethylenepentaurea. The rate of nitrogen release is mainly related to chain solubility. The mineralization of UF is governed by microbial activity. A wide spectrum of organisms is known to be involved.
Alvin Alexander, Hans‐Ulrich Helm
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The use of slow-release fertilizers in citrus
Journal of Horticultural Science, 1996SummaryIn the last decades, an important change has taken place in agricultural practices to increase production and thus the economic yield of citrus. This increase has been supported mainly by new irrigable areas and the wider use of fertilizers, especially nitrogenous ones. The efficiency of nitrogenous fertilization is highly variable. A great part
Maria D. Raigon +3 more
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Release mechanism of a novel slow-release nitrogen fertilizer
Particuology, 2019Abstract We developed a novel slow-release nitrogen fertilizer with the aim of increasing the efficiency of urea use, recycling phosphogypsum, and reducing related pollution. Phosphogypsum was used as a granulating agent and carrier for urea to prepare a novel fertilizer core, which was coated with paraffin wax.
Xiaolong Yu, Bogang Li
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