Design and Synthesis of Controlled Release Pesticide-Polymer Combinations

Allan, G. G.; Chopra, C. S.; Neogi, A. N.; Wilkins, Richard M.

doi:10.1038/234349a0

Cited by 73 publications

(20 citation statements)

References 3 publications

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“…However, most often homo-and co-polymerization of the unsaturated derivatives of LMW regulators or reaction of the LMW regulators with reactionable polymeric carriers were used [5,77,81] . It should be mentioned that methods of synthesis of phytoactive polymers are similar to those of other biologically active HMW compounds e .g .…”

Section: Phytoactive Polymers : Slow Release Pgr Formulationsmentioning

confidence: 99%

Polymeric derivatives of plant growth regulators: synthesis and properties

Tsatsakis

Штильман

1994

Plant Growth Regul

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The polymeric formulations of plant growth regulators (PGRs) are high molecular weight systems in which the PGR unit is attached to the polymeric chain by a hydrolysable chemical bond . These polymeric derivatives (esters, ethers, or else) of PGRs are characterised by the ability to release the active compound (PGR) from their solutions (mainly aqueous) in certain conditions . The release of the PGR can be controlled by external factors (pH, temperature, enzymes, solution concentration), and inherent properties of the whole macrosystem chemical structure, such as the type of the hydrolysable bond between PGR unit and the main polymeric chain, the structure of the polymer chain (e .g . molecular weight, level of hydrophilicity, and the content of hydrophobic groups, macromolecular conformation in solution etc .) . These controlled (slow) release PGRs display certain advantages over conventional PGR formulations due to their prolonged action, improved efficiency (e .g . wide range of effective concentrations) greater safety to non-target organisms and the applicators . In addition the ability of altering the solubility level and modifying the aplication form is of considerable interest . The biological activity efficiency of polymeric PGRs has been documented and the relation of this efficiency to the PGR unit hydrolytic release ability has been mentioned . Slow release polymeric PGRs are considered to solve certain problems in agriculture .Abbreviations : PGR = plant growth regulator ; C(S)RF = controlled (slow) release form ; PD = polymeric derivative ; ACC = 1-amino-cyclopropane-l-carboxylic acid ; NAA = 1-naphthylacetic acid ; 2,4-D = 2,4-dichlorophenoxyacetic acid ; IAA = indole-3-acetic acid ; BAP = N6-benzylaminopurine; ABA = abscisic acid; GA = gibberellin ; LMW = low molecular weight; HMW = high molecular weight . 69

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Section: Phytoactive Polymers : Slow Release Pgr Formulationsmentioning

confidence: 99%

Polymeric derivatives of plant growth regulators: synthesis and properties

Tsatsakis

Штильман

1994

Plant Growth Regul

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“…Pesticides containing acid groups were converted to more reactive acid chlorides, which could react with polymers containing pendant hydroxyl or amino groups. Acylation of synthetic and natural polymers were possible in this manner (Neogi,1970;Wilkins, 1976;Allan et al, 1971;Allan et al, 1977). Pentachlorophenol intercalated on mineral clay was reported by Akelah and Rehab (Akelah & Rehab,1996).…”

Section: Controlled Release Agrochemicalsmentioning

confidence: 99%

Neem Seed Oil: Encapsulation and Controlled Release - Search for a Greener Alternative for Pest Control

Devi¹,

Maji²

2011

Pesticides in the Modern World - Pesticides Use and Management

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“…The concept controlled nutrient release is not a recent innovation. In 1962, Oertli and Lunt [17] published their study about controlled-release of fertilizer minerals by membrane encapsulating [18] , and in 1971 Allan et al [19] reported on controlled-release of pesticides. Their seminal work has had a dramatic influence on the field and development of the technology continues to grow as shown in Figure 1.…”

Section: Controlled Delivery Of Agrochemicals By Polymeric Matricesmentioning

confidence: 99%

“…Controlled-release materials used to acrylic-based organic polymers, such as acrylamide [19] . Through time, environmentally green materials were proposed as alternatives to encapsulate agrochemicals, such as inorganic soil components including clay minerals [20] or calcium carbonate [21] .…”

Section: Controlled Delivery Of Agrochemicals By Polymeric Matricesmentioning

confidence: 99%

Polymers and its applications in agriculture

et al. 2017

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Graphical Abstract RbstractPolymers are a class of soft materials with numerous and versatile mechanical and chemical properties that can be tuned specific to their application. Agriculture is an expanding area due to the requirement for indispensable food to meet the demands of a growing global population. Consequently, development of technology to improve the quality of the soil and agriculture manages is still under development. Intelligent agricultural supplies (controlled or slow release agrochemicals and superabsorbents) and biosorbents contribute to an expanding niche using technology from polymers. This review elucidates the state-of-the-art and will discuss some important aspects of using polymers in intelligent fertilizers, as well as superabsorbent, biosorbent and biodegradation processes in agriculture that are environmentally, technically, socially, and economically sustainable.

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Design and Synthesis of Controlled Release Pesticide-Polymer Combinations

Cited by 73 publications

References 3 publications

Polymeric derivatives of plant growth regulators: synthesis and properties

Polymeric derivatives of plant growth regulators: synthesis and properties

Neem Seed Oil: Encapsulation and Controlled Release - Search for a Greener Alternative for Pest Control

Polymers and its applications in agriculture

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