tacked than a large one set in a clearing in the woods.

~Control of the adult:~ The safest, most direct measure is to pick or
knock the beetles off the plants, preferably in the early morning, when
they are cool. They may be dropped in a pail with a little kerosene in
it. Some plants can be shielded with thin nets which can be placed on
them by day. We do not recommend Japanese beetle traps. These yellow
traps, which are baited with geranoil and other essential oils, can draw
beetles in from a considerable distance but we have found that, possibly
because many beetles miss the trap, the population of beetles remains
high near the trap, in spite of heavy daily catches. Although the use of
one trap to the acre on a block 10 miles square would probably get
results, the use of a few traps on a small nut planting is likely to be
disappointing.

A MEMBER: Will birds or any kind of poultry eat them?

DR. ADAMS: Yes, poultry will eat them, as far as they can reach. Certain
birds, of course, will feed on them to some extent, but birds, in
summer, seem to have plenty of other things to eat, and they certainly
leave plenty of beetles in plain sight uneaten. We can see that the
birds are a fairly constant helpful factor, but are not to be relied
upon to prevent injury occurring in a beetle outbreak.

Rotenone, which, I believe, is one of your main insecticides in nut
culture, is fairly effective on Japanese beetles. It kills the beetles
hit with the spray and gives protection for several days thereafter. If
you apply it often enough, rotenone can take care of the plants so that
they don't become disfigured by the beetles. Using cube powder, you may
apply five ounces of 4% rotenone in 10 gallons of water. Of course, in
many cases there is no objection to using DDT wetable powder or dusts,
unless you are afraid of a mite problem arising after DDT is used. If
DDT can be sprayed on the plants, it needs to be applied only about
three times during a summer, or sometimes only twice. For plants that
are growing very fast, the new growth, of course, has to be kept
treated. You may prefer to spray once heavily over all the plants in
July and then, after that, keep the beetles off by spraying or dusting
the new growth, during August. For more directions see U.S.D.A. Farmers
Bulletin No. 2004.

Now, there are new chemicals that will kill Japanese beetles very
quickly. Parathion will kill them, but its toxicity necessitates great
care in