THE FACTORS OF OPTIMAL GROWTH AND USABILITY OF TOBACCO
Main researcher
: VULETIĆ, NIKOLA (53995) Assistants
DEVČIĆ, KAZIMIR (9533)
BUDIN, TOMISLAV (5981)
ČAVLEK, MIROSLAV (85901)
MARIĆ, DRAHOMIRA (28380)
FILIPOVIĆ, BORIS (147154)
BAJTEK, MILAN (111492)
BUŽANČIĆ, ANDRIJA (6414)
DANON, VLADIMIR (8940)
ŠMALCELJ, BLAŽICA (47594)
KOSTIĆ, SLAVKO (22460)
PEROVIĆ, ĐURĐICA (36320)
TOMIĆ, LIDIJA (50031)
TRIPLAT, JOSIP (50494)
TURŠIĆ, IVAN (76620)
VLAHOVIĆ, ANTE (207623)
BUTORAC, JASMINKA (189662)
ČURKOVIĆ, MIRNA-PERICA (189651)
ŠVOB-TROJE, ZRINKA (900598)
Type of research: applied Duration from: 04/30/91. to 12/11/98. Papers on project (total): 202
Papers on project quoted in Current Contents: 16
Institution name: Duhanski institut, Zagreb (92) Department/Institute: Tobacco Institute Zagreb Address: 10000 Zagreb, Planinska 1, Hrvatska City: 10000 - Zagreb, Croatia
Communication
Phone: 385 (0)1/228-222;228-225;219-154
Fax: 385 (0)1/2332-850
Summary: Extensive research on breeding materials, cultivars and
lines of bright Virginia and Burley tobacco resistant to diseases,
especially PVY, blue mould, and tobacco mosaic virus, of an acceptable
quality and yield, was carried out over a five-yearperiod, i.e. in 1991,
1992, 1993, 1994 and 1995. To determine the optimum ecological condition
for flue-cured tobacco crop rotation was investigated by means of a
stationary experiment on six plots with crops important for northern
Croatia.The experiment included cultivar methods with irrigation and in
dry conditions. The tobacco/soil nutrient dynamics was observed for
nitrogen, potassium and phosphorus, as well as for some micronutrients.
The reduced application of tobacco pesticides was investigated by exact
and demonstration experiments, as well as by determining pesticide
residues. The impact of tobacco herbicides on other crops was determined
by varying the method of application, the time of application, and the
quantity. The chemical composition of all the breeding materials and the
materialsfrom the other field experiments was determined and compared to
the standard, or the dynamics of particular components was observed.Apart
from classical methods in the process of tobacco breeding, the more recent
methods of tissue culture and the haploid technique were introduced
successively in order to shorten the duration of the breeding process. In
the case of the newly created lines of Virginia tobacco, the nicotine
and tar content in the smoke of experimental cigarettes were observed.
Procedures by which the tar and nicotine content in cigarette smoke can
be reduced by as much as 80% were established. Research was carried out
on the impact of the way in which agriculture is organized in the
flue-cured tobacco production, and the most favourable ways of organizing
national tobacco industry and the tobacco market were investigated.
Research goals: Up-to-date production of Burley and Virginia type
tobacco is incompatible with the lack of organization and the extensive
growing technology now prevailing in northern Croatia. The tendency world
wide, as well as in the EU, is to use breeding and growing methods to get
bodied tobacco cultivars with a high content of desirable components but
with a lower level of tar and nicotine in smoking, thus reducing the
health hazard. This is the goal of this research. Therefore the scientific
research performed as part of this project has to be applicable in
practice. This will not reduce the scientific value of the results
obtained. A number of exact field experiments will be set up in the
growing area to investigate problems related to the growing method, crop
rotation, the dynamics of water and nutrients, the methods of cultivation,
curing, and pesticides application. A special series of field experiments
will be the basis of work on breeding in the classical way or by the
methods of tissue culture and haploids. The results will be verified
statistically and confirmed or extended by a number of chemical analyses
and investigations. The newly created cultivars will be applied in
production and tested further. Other information about the project.