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STARCH UREA-FORMALDEHYDE MATRIX ENCAPSULATION OF SOLID AGROCHEMICALS .3. STUDIES AND BIOEFFICACY TRIALS ON DOUBLE ENCAPSULATION

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Title STARCH UREA-FORMALDEHYDE MATRIX ENCAPSULATION OF SOLID AGROCHEMICALS .3. STUDIES AND BIOEFFICACY TRIALS ON DOUBLE ENCAPSULATION
 
Creator RAJAGOPALAN, N
BHASKAR, C
BANKAR, VS
POKHARKAR, VB
SHUKLA, PG
REGUPATHY, A
KHILAR, KC
 
Subject starch matrix encapsulation
urea formaldehyde
controlled release
double encapsulation
encapsulated formulation
bioefficacy
cutworms
white grubs
nematodes
 
Description A technique for the double encapsulation of carbofuran in starch urea formaldehyde (Starch-UF) matrix has been developed. The solid particles of carbofuran were first microencapsulated with UF resin and these microcapsules were then dispersed in the Starch-UF matrix to obtain a granular formulation. The rate of release of carbofuran from these granules was found to be governed by its diffusion through the solid UF resin shell and was significantly slower than from the single encapsulated granular formulation prepared by dispersing uncoated carbofuran in Starch-UF matrix. The bioefficacy of these double encapsulated granules (Encecap-D 3G), was evaluated for persistence against rice pests in paddy and against subterranean pests in potato, in comparison with conventional formulations of carbofuran, phorate, quinalphos, aldicarb and cadusafos. The persistence of Encecap-D 3G was found to be better than that of the standard formulation in the cultivation of paddy under flooded conditions and in the cultivation of potato. The order of efficacy was found to be: White grubs-Encecap-D 3G > quinalphos > cadusafos > aldicarb > phorate > Furadan 3G; Nematodes-cadusafos > Encecap-D 3G > quinalphos > aldicarb > phorate > 'Furadan' 3G.
 
Publisher JOHN WILEY & SONS LTD
 
Date 2011-08-17T00:50:43Z
2011-12-26T12:55:14Z
2011-12-27T05:43:57Z
2011-08-17T00:50:43Z
2011-12-26T12:55:14Z
2011-12-27T05:43:57Z
1995
 
Type Article
 
Identifier PESTICIDE SCIENCE, 45(2), 123-131
0031-613X
http://dx.doi.org/10.1002/ps.2780450206
http://dspace.library.iitb.ac.in/xmlui/handle/10054/9684
http://hdl.handle.net/10054/9684
 
Language en