The Hawaiian gazette., 1916-12-08

49, members OF the HhWhnan sugar
| planfefs' AsaociatiVn yesterday gave
4 ctfhkAt attention 70 thet fbpeft of ths
i Experiment. statieI cospDlittet spend
| lns The better port Of ~ dsy>ein u.
discussion Of the various importani
points raised IN the report.
4 Progress Ia the propagation Of para
sftee Tor, cane PESTS the problem of the
so;cplled Lshaina disease, and Other
esne disensee soil etbdy; irrigation md
sdif moisture Investigate and plan
tation field experimsnts were tie main
topics Of discussion On the report led
by J. T. o. Hagens, chairman 81 the
The consensus of opinion was thai
cyfTYfhing possible should Be done 70
EsdsRhcA. and extend the work Of the
expefiment station. Increase in the
iiwofK Of field experiments at the yari-
Eous plsntations IL planned extensively
for The future for the benefit Of piarita-
ttion maDagers,a
1.-THE experiment station committed
and the trustees will appreciate any
Recommendations. y said Mr.. Hagens,
ffthat the plantation. managers have
l,regsrding the work OF the experiment
stsdon. Instead of doing the work at
4be station and having the managers
some there hereafter the work will
be done mt the plantations and the
, .seG vii, VII e 2. tO the nanasers win win
Plantation Experiments %fi
z. +. Moif endorsed Mr.. Hagens
plan of having the experiments car
fled on nj the vaHious plantations and
i0therk Expressed similar views No OBJ
iieetion was stated to the expense when
thsr question was raised. H. p. Agee,
ltiiTfftor of the station, was asked 70
hasS the station bulletin on cane vari-
lries printed every year instead OF twice
n Taking up the subject Of cane pests,
Director Agse, leading the discussion,
ideclared that one of the very definite
,nehieyenents Of the. station this year
bid been the establishment Of the SEQ.
liza wasp as n parasite for the Anoma.
In beetle after three and a half years
work on the Investigation. I, i s., ,Y
| F. A. q. Muir, entomologist, at the
station described the work on the An.
omala beetle stating that Ave different
parasites had been. Imported but only
Ethe scotia wasp had been definitely es.
tablished. fhiS Is the first record OF
the scotia wasp having been transferred
TO another country. Mr.. Muir said;
4 "Thb successful outcome Of the scotia
texperiment depends on the faculty Of
the wasp ip establishing, itself perman'
ilently. II win be twelve months or 90
before definite judgement can be pass
Jed. One important discovery is that
We ore convinced that because b field
Is once infested with. Anomala beetle
4 does not mean that Il will, be, Infested
forever. Leaving trash on the fields
does not apparently help the develop
ment of the AnOmala pest nor will
bprning-of necessarily, give any re
lief 4,
Lea hopper Pest -
II On the lsafhoPPer pest the report
Isfates;t, p g. . =, =
''" CopditiOps respecting this pest have
tbeen about normal. Several plantations
\ have reported outbreaks, but for the
most part these were not serious. Tho
4 depredati6ns at the plantation of the
Hawaiian Agricultural Company have
Sapsed definite damage, but Mr.. Swezey
! nov reports that. tho situation shows
Improvement. In the upper fields Of the
olaa Sugar Company there is an et'
tepsiye ipfestatiop, of leafhoppers Of
jths present time. - =. :
'Thtee new parasites have been dis
teoSeIed for Ieafhopper but are not yet
de6nitely, Established. No change in
the situation, regarding the cane bOrer
Twas rspOrted, The Teehnid Ay AZ, q
lparasitei Is attaining maximum efficiency
in al districts except Kap, Hawaii. =
/ On the leafhopper and AnOmals
beetle pests, the report states;
i "a year ago we stated that it. was
j Mr.. Muir's plan to effect more rigid
contrib of the leafh6ppers by securing
additional egg,parasites3 from Formosa
and it is now gratifying to report tina,
he has, introduced three new species AID
j that there Is good reason to expect that
these parasites win become established
"These Mr.. Muir brought with him
in returning from the Philippines by
fway Of Formosa. One Of them Is Z
Mymarid Of the gems Paranagrus and
very similar 10 Paranagrus optabilis
our very valuable species introduced
from Australia twelve years ago. -
1.-THE other two FornOsa leafhoppei
egg parasites were species Of Ootetfas
| VI thp uhN
are related to the Ootetrastiehus beatul
INTRODUCED from Fiji in 1905. One Of
|. these species issued 10 sufficient mum
beers from the material hTought by Mr.
bI1ir for colonies to be sent directly I,
several planta tions, Those retained Il
ftages failed to breed, but IL IL hope,
that they became, established from thl
liberated coIonies, The, other species
t0f Formosa Ootetrastichus issued ii
smaller numbers from the original ma
lterial brought in by Mr.. Muir, and
though the entire colony was retaipe,
in the breeding cages they. have propa
gated readily, and colonies have alread,
2 been Distributed to favorable localities
The breeding work has been handle,
BY Mr.. Swezey and Mr. Timberlake
WITH the result that colonies are noV
! iheiitg tDberpted' on plaptations wher
fRere' is an abundance Of leafhoppers
TEenty.eight colonies have been distri
hnted to date ...'.. =
t"The comparative facility wit
? which this project is proceeding sbonl
. TN no way helittle the attainment. Nj
Muir has accomplished very import
faht piece Of work in securing, three ad
n