PLANT PROTECTION 1 – Pests, Diseases and Weeds

PLANT PROTECTION 1 – Pests, Diseases and Weeds
Table 70. Plant growth regulators (PGRs) some examples
TYPE
STIMULATES
ROOTS ON
CUTTINGS
THE PRODUCT
SOME USES
Read label, obtain advice from company
Trade name
Active constituent CROPS TREATED EFFECTS
AUXINONE, VARIOUS Ornamentals, vegetables, Rooting powders
IAA (indole acetic acid) turf. Cuttings, sugarcane production on cuttings (stimulates cell
+
(setts), tissue culture, in enlargement, plant growth and feeder
NAA (naphthalene acetic budding and grafting to root production), also prolongs life of cut
acid)
stimulate callus
flowers, stimulate root
VARIOUS
NAA (naphthalene acetic
acid)
VARIOUS
IBA (indole butyric acid)
Ornamentals, apples,
pears, olives,
pineapples, cuttings.
Ornamentals, cuttings.
Thins apples
controls preharvest drop, preventing
fruit fall, promotes rooting of
herbaceous plants.
Cutting & rooting powders, gels, liquids
promotes the development of feeder
roots
SMOKE
SMOKE
aerosol, smoke water,
bushland soil, applied
directly to seeds, active
principle is unclear
Certain Australian native
seed
Breaks seed dormancy
more uniform and earlier germination,
more robust seedlings of difficult-togerminate
species
GERMINATION
STIMULANT
BEDDING
PLANTS, ETC
KARRIKINOLOIDE
naturally occurring
germination stimulant
ALAR, DAZIDE
daminozide
Broadacre weed control
Ornamentals, fruit,
vegetables, all
dicotyledons, not
monocotyledons
Seeds in the dormant seed bank
to reduce the extent to which cultivation
is used to stimulate weed emergence
and improve the sustainability of
minimum tillage.
Dwarfs plants, reduces internode
elongation
controls height and promotes flowering
of ornamental plants
TREES, SHRUBS,
TURF, ETC
CUT FLOWERS
VEGETABLES
CONDENSE, CLIPPER,
GRO-SLOW, SHORTSTOP,
VARIOUS
paclobutrazol
may be formulated with
fertilizer
CLUPLESS, PRIMO MAXX
TURF, LAWN TAMER
trinexapac-ethyl
METHYLCYCLOPROPENE,
SMARTFRESH SMARTTABS
1-methylcyclopropene
POTATO STOP-SPROUT
TATO-VAPO, VARIOUS
chlorpropham
(carbamate)
ROYAL MH, SLOW GROW
maleic hydrazide
Container ornamentals,
fruit, turf, amenity trees
(along street, under
power lines, near
buildings and in open
spaces)
Reduces leaf and stem
growth of grass species,
reduces need for mowing
by up to 50%. Grass is
healthier, stronger,
thicker, tougher and can
better withstand heat,
drought, cold and disease
Certain cut flowers,
fruits, vegetables
Potatoes
Onions, potatoes,
tobacco
Reduces vegetative growth
reduces vegetative growth in vigorous
young trees, permits denser plants,
promotes early production and
increased fruit size, turf
Clipper - Application by injection into the
base of the tree trunk by specially
designed injection equipment. Clipper
reduces annual vegetative growth by up to
40%. Moves upwards and outwards in the
tree, accumulates within the shoots and
leaves of the crown, controlling growth for
up to 3 years or more (depending on the
species). SHORTstop – for the suppression
of winter grass & growth regulation in turf
Turf growth inhibitor
inhibits the formation of gibberellic acid
within grasses; only works on grasses
which then rarely flower or produce seed
heads helping to control weedy annuals
like winter grass, reduces the amount of
pollen in springtime, reducing problems
for asthma and allergy sufferers
Anti-ethylene treatment
post-harvest treatment for improved
quality after shipping, storage or
handling
Prevents potatoes sprouting
do not use on or near seed potatoes.
Controls sprouting, sucker development
prevents of premature sprouting in
potato tubers, onions and garlic,
tobacco sucker control
Non-parasitic pests and diseases 403