Schumacher INC-700A User Manual download pdf

THE EXTENSION LINE

Hole Notes welcomes the addition of Bob Mugaas of the

University of Minnesota Extension Sen/ice as a regular

contributor. As Hennepin County Extension Agent, Mr.

Mugaas will compile various articles related to the golf

field for our information. Bob is an excellent source for

answers to many questions on horticultural problems.

He may be reached at

542-1420.

Written requests should

be sent to:

Bob Mugaas

Minnesota Extension Service-Hennepin County

701 Decauter Ave. N.

Suite 105

Minneapolis, MN 55427

This month's article covers bark beetles and their affect

on pine trees.

DROUGHT STRESS

BARK BEETLES TAKE TOLL

ON MINNESOTA PINES

by JEFF HAHN

Minnesota Extension Service

Many Trees suffered through the drought of 1988. Pines

were no exception and thousands were killed by the pine

engraver beetle, Ips pini. This beetle attacks all species

of pines, although red, jack, and Scotch pines are most

commonly affected. The beetles bore into fresh logging

slash or stressed and dying trees. Drought stress of

pines is usually rare in the Great Lakes region; the num-

ber of pines killed this year by bark beetles was much

higher than in normal years.

When pines are stressed, pitch flow and production of

chemicals toxic to bark beetles are reduced, leaving trees

susceptible to insect attack. Pine engraver beetles locate

these stressed trees with their sense of smell. The adults

excavate galleries and deposit their eggs. The larvae

hatch and feed in the phloem layer, slowing girdling the

infested branch or trunk. This results in eventual death of

the tree.

It is difficult to combat the pine engraver beetle. The

Department of Natural Resources (DNR) suggests several

strategies for urban areas including watering, thinning

overcrowded stands, using pheromone-baited traps, and,

in some cases, using "trap" trees. Removing limbs killed

by bark beetles does not lessen the tree's attraction to

the beetles unless tree vigor is also improved. If properly

done, stand thinning, watering, and fertilization can help

TREES

SHRUBS

GROUND

COVER

FLAT DRAIN

SUSTANE

ORGANIC

FERTILIZER

SCHUMACHER'S INC.

Ask for Tony or Mark

500 Malderi Street

South St. Paul, MN 55075

(612) 451-1042 1-800-798-1042

SINCE 1940

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Page 1 - SCHUMACHER'S INC

THE EXTENSION LINE Hole Notes welcomes the addition of Bob Mugaas of the University of Minnesota Extension Sen/ice as a regular contributor. As Henne

Page 2 - KINDS OF

improve tree vigor. Removing trees killed by bark beetles will not affect beetle reproduction unless this material is destroyed while the beetles are

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Schumacher INC-700A User Manual

Browse online or download User Manual for Power supply units Schumacher INC-700A. SCHUMACHER`S INC.

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