Electronic Journal of Polish Agricultural Universities (EJPAU) founded by all Polish Agriculture Universities presents original papers and review articles relevant to all aspects of agricultural sciences. It is target for persons working both in science and industry,regulatory agencies or teaching in agricultural sector. Covered by IFIS Publishing (Food Science and Technology Abstracts), ELSEVIER Science - Food Science and Technology Program, CAS USA (Chemical Abstracts), CABI Publishing UK and ALPSP (Association of Learned and Professional Society Publisher - full membership). Presented in the Master List of Thomson ISI.
2002
Volume 5
Issue 2
Topic:
Agricultural Engineering
ELECTRONIC
JOURNAL OF
POLISH
AGRICULTURAL
UNIVERSITIES
Doruchowski G. , Labanowska B. , Goszczynski W. , Gody˝ A. , Holownicki R. 2002. SPRAY DEPOSIT, SPRAY LOSS AND BIOLOGICAL EFFICACY OF CHEMICALS APPLIED WITH DIFFERENT SPRAYING TECHNIQUES IN BLACK CURRANTS, EJPAU 5(2), #01.
Available Online: http://www.ejpau.media.pl/volume5/issue2/engineering/abs-01.html

SPRAY DEPOSIT, SPRAY LOSS AND BIOLOGICAL EFFICACY OF CHEMICALS APPLIED WITH DIFFERENT SPRAYING TECHNIQUES IN BLACK CURRANTS

Grzegorz Doruchowski, Barbara Labanowska, W│odzimierz Goszczynski, Artur Gody˝, Ryszard Holownicki

 

ABSTRACT



A directed air-jet sprayer (SEPIA) was compared with a conventional radial flow sprayer (TERMIT) to determine possible control of spider mites (Tetranychus urticae Koch) and currant rust (Cronartium ribicola J. C. Fisher) on black currants when using spray volumes 260, 400 and 600 dm3 ha-1 and different dose rates of chemicals. The Cumulative Infestation Index (CII) for spider mite and percentage of infected leaves for currant rust were evaluated to determin the biological efficacy of applications. The spray deposition across the bushes and spray loss to the soil and to the air were assessed in order to compare the quality of treatments. The efficacy of pest and disease control was reduced for the lower chemical dose rates. Both the sprayers produced similar deposits within currant bushes, however, the directed air-jet sprayer caused considerably lower spray loss than did the conventional sprayer.

Key words: currants, spider mites, currant rust, spray deposit, spray loss.