MARYLAND 
The destruction is aparently brought about by two agencies: the 
Seed corn maggot and Fusariurn spp . In certain cases the animal 
and plant parasites act singly and independently, in others they 
work together ,making exact determination of the cause of trouble 
impossible. It appears that insect injury is predominant on the 
.mainland while fungus rot is the outstanding feature on the pen- 
insula. : 
On examination of a considerable number of hills clear cases 
of maggot injury could be seen. 
< High tempratures with low arainfall at planting time, soil type 
and drainage, storage and handling of the seed, and method of 
fertilized application, also seemed to be secondary limiting 
factors to the extend of damage in individual cases in this 
region. 
W.H.White (B.E.April 21 ) The failure of the potatoes to germ- 
inate in a normal manner in some of the fields in the vicinity 
of Norfolk .Virginia, was due, in the writer's opinion, to the attack 
of maggots in some instances and to a fungus disease in others* 
In cases where the potatoes germinated but made a very slow grow- 
th and produced unhealthy plants, it was due to the attack of the 
maggot, in many instances accompanied by rot, but in cases where 
the potatoes failed to germinate , fungus rot was always present* 
It would be impossible to estimate the damage caused by either 
•of these agencies, because a large percentage of the seed pieces 
after being attacked, germinated and the plants developed, but 
with much less vigor" than under normal conditions and it is not 
possible that these plants will prodice a full crop. 
During the warm weather of March" the adult of the Seed-corn maggot 
was very active and the flies were attracted to the potato fields 
by the decaying organic matter in the form of organic fertilizers 
such a3 fish so rap, tankage and dried blood. The plowing under of 
.kale was laso an attraction for the flies, as maggots of this 
species were Usually abundant in such fields. Where uncut potatoes 
were examined they did not show any indication of either fungus 
or maggot injury. 
E.M.Cory (April 23) Received specimens from Hurlock with the 
following communication; " Under seporate cover I am sending you 
a few pieces ofmpotatoes I planted several weeks ago and I find 
that they are full -of little worms which I am sure you will notice. 
They were planted on land on which crimson clover was turned 
under and the seed is home grown. I also planted some northern 
seed which does not show any rot." 
