
TY  - JOUR
A1  - Carter, MV 
A1  - Mullett, LF 
T1  - Biological control of <I>Eutypa armeniacae</I>. 4. Design and performance of an applicator for metered delivery of protective aerosols during pruning
JF  - Australian Journal of Experimental Agriculture
JO  - Aust. J. Exp. Agric.
Y1  - 1978
VL  - 18
IS  - 91
SP  - 287
EP  - 293
KW  - 
UR  - https://doi.org/10.1071/EA9780287 
N2  - The paper describes the development of a prototype applicator for delivery of protective mixtures, in aerosol form, to the wounded sapwood surfaces exposed during pruning. The equipment has three components : a 2 litre day-service tank, a light weight belt-mounted piston pump, and a modification of a standard pneumatic-powered pruning handgun. Laboratory tests of the applicator have proved its ability to deliver, repeatedly, a uniform dose of aerosol containing sufficient particulate chemical and/or biological matter to protect apricot sapwood from invasion by Eutypa armeniacae. Field tests of the equipment in two orchards demonstrated that from 90-100 per cent of wounds can be treated for the addition of less than 20 per cent to the time required to prune a tree. Over a period of three weeks' use no mechanical defects developed. Estimated volume of protective fluid required per day, treating up to 90 per cent of wounds, is less than two litres. 
ER  -

