Glutaraldehyde crosslinked sodium alginate beads containing liquid pesticide for soil application

Kulkarni, Akshay; Soppimath, Kumaresh S.; Aminabhavi, Tejraj M.; Dave, A. M.; Mehta, M. H.

doi:10.1016/s0168-3659(99)00176-5

Cited by 244 publications

(147 citation statements)

References 9 publications

Supporting

Mentioning

127

Contrasting

Unclassified

Order By: Relevance

“…The similar observation has been observed by Roy et al (2009) where the increase in content of gelatin in alginate-gelatin beads decreased the release of cypermethrin insecticide from the formulations. Similar results have also been observed by other workers (Kulkarni et al 2000). It is well-known that starch and alginate degrade in the soil.…”

Section: +3supporting

confidence: 92%

“…The release of azadirachtin increased when higher concentrations of neem oil were used, and the results indicated that variable quantities of the oil could be successfully incorporated in the coated alginate spheres. Kulkarni et al (2000) prepared spheres of alginate to carry azadirachtin, using glutaraldehyde as the reticulation agent. The formulations were optimized by varying the time of exposure to the reticulation agent and the percentage loading of neem oil.…”

Section: Fernándezmentioning

confidence: 99%

See 1 more Smart Citation

Polysaccharides as safer release systems for agrochemicals

Campos

Oliveira

Fraceto

et al. 2014

Agron. Sustain. Dev.

278

175

View full text Add to dashboard Cite

Agrochemicals are used to improve the production of crops. Conventional formulations of agrochemicals can contaminate the environment, in particular in the case of intensive cropping. Hence, there is a need for controlledrelease formulations of agrochemicals such as polysaccharides to reduce pollution and health hazards. Natural polysaccharides are hydrophilic, biodegradable polymers. This article reviews the use of polysaccharides in the form of micro-and nanoparticles, beads and hydrogels. The main points are: (1) slow release formulations minimize environmental impact by reducing agrochemical leaching, volatilization and degradation. For example, 50 % of the encapsulated insecticide chlorpyrifos is released in 5 days, whereas free chlorpyrifos is released in 1 day. (2) Slow release formulations increase the water-holding capacity of soil. (3) Slow release formulations better control weeds in the long run. (4) Polymer-clay formulations store ionic plant nutrients. (5) Polymer hydrogel formulations reduce compaction, erosion, and water run-off. They increase soil permeability and aeration, infiltration rates, and microbial activity, and, in turn, plant performance. In conclusion, polysaccharide formulations can be used for safer use of agrochemicals.

show abstract

Section: +3supporting

confidence: 92%

Section: Fernándezmentioning

confidence: 99%

Polysaccharides as safer release systems for agrochemicals

Campos

Oliveira

Fraceto

et al. 2014

Agron. Sustain. Dev.

278

175

View full text Add to dashboard Cite

show abstract

“…SA is a biodegradable polymer used extensively in drug delivery applications [9][10][11][12]. Earlier literature cites many applications of SA in agricultural applications after crosslinking with glutaraldehyde (GA) [13][14][15]. SA is one of the most versatile natural materials known to form hydrogels and films [16][17][18][19][20][21][22].…”

Section: Introductionmentioning

confidence: 99%

Sodium alginate/poly (ethylene oxide) blend hydrogel membranes for controlled release of valganciclovir hydrochloride

Mallikarjuna

Rao

Siraj

et al. 2012

Designed Monomers and Polymers

View full text Add to dashboard Cite

Sodium alginate (SA) and poly (ethylene oxide) PEO blend membranes were prepared by solvent casting method for the controlled release of valganciclovir hydrochloride, an antiHIV drug. The prepared membranes were thin, flexible, smooth, and characterized by Fourier transform infrared spectroscopy (FTIR), differential scanning calorimeter (DSC), X-ray diffraction (X-RD), scanning electron microscopy (SEM), and tensile strength measurement. FTIR was used to understand the formation of hydrogen bonding between SA and PEO. The DSC and X-RD studies were performed to understand the crystalline nature of drug after encapsulation into the membranes. SEM was used to study the surface morphology of the membranes. Tensile strength measurements revealed the mechanical strength of the membranes. In vitro release studies indicated a dependence of release rate on the extent of crosslinking, amount of drug loading, and the amount of PEO, but slow release rates was extended up to 12 h. Cumulative release data were fitted onto to an empirical equation to compute diffusional exponent (n), which indicated the nonFickian trend for drug release.

show abstract

“…A new direction, aimed at reducing the risk of the uncontrolled distribution of xenobiotics in the environment, is the development of a new generation of environmentally friendly herbicide formulations with a targeted and controlled release of the active ingredient owing to the use of specific coatings and/or carriers produced from biodegradable materials. Several examples of polymeric carrier usage have been described, including ethyl cellulose [3,4], polyurethane [5], sodium alginate [6,7] for delivery of a number of weed and pest killing chemicals.…”

Section: Introductionmentioning

confidence: 99%

Degradable Polyhydroxyalkanoates as Herbicide Carriers

et al. 2012

View full text Add to dashboard Cite

The biodegradable polymer poly(3-hydroxybutyrate-co-3-hydroxyvalerate) has been used to design experimental sustained-release formulations of the herbicide Zellek Super in the form of films and microgranules. The kinetics of polymer degradation and the dynamics of herbicide release show that the rate and extent of herbicide release from the polymer matrix into the soil depends on the geometry of the carrier and the proportion of the pesticide loaded into it (polymer/pesticide mass ratio). Experiments with the creeping bentgrass (Agrostis stolonifera L.) show that the formulations of the herbicide Zellek Super constructed as microgranules and films can be successfully used to suppress the growth of grasses. This study is the first to demonstrate that biodegradable polyhydroxyalkanoates can be used effectively to construct environmentally friendly sustained-release PHA-herbicide systems that can be placed into the soil together with seeds.

show abstract

Glutaraldehyde crosslinked sodium alginate beads containing liquid pesticide for soil application

Cited by 244 publications

References 9 publications

Polysaccharides as safer release systems for agrochemicals

Polysaccharides as safer release systems for agrochemicals

Sodium alginate/poly (ethylene oxide) blend hydrogel membranes for controlled release of valganciclovir hydrochloride

Degradable Polyhydroxyalkanoates as Herbicide Carriers

Contact Info

Product

Resources

About