120 TRANSACTIONS OF THE 
CORN UNDER IRRIGATION. 
By F. S. HARRIs. 
(Summary). 
The proper use of water is the most important question 
in the agriculture of arid regions; and the consistent use of 
manure is necessary to the establishment of a permanent 
agriculture in any country. 
Corn is one of the most important of the crops raised 
by American farmers. Its study, therefore, has economic 
as well as scientific importance. 
This paper reported tests of the effect of soil moisture 
and manure on the yield and morphology of corn. 
The highest yield of corn to the acre of land was pro- 
duced where from fifteen to thirty acre-inches of water 
were applied. Twenty inches is probably the best amount 
to use under Greenville conditions. 
Where forty acre-inches of water were applied there 
was a decrease in yield of corn, a waste of water, a loss 
of time in applying the unnecessary water, and injury to 
the soil; hence the wise farmer will avoid the excessive use 
of water. 
Manure gave sufficient increase in yield of corn to 
make it worth about $2.00 a ton. 
Many results are given showing the effect of irriga- 
tion water and manure on relative amounts of different 
parts of the corn plant. 
Large amounts of irrigation water. cause the corn to 
have relatively less grain, cobs, and leaves, and more husks 
and stalks. 
Manure decreased the percentage of grain, cobs, and 
husks in the plant, but increased the percentage of stalks and 
leaves. 
Soil treatments affected the branching of the corn tas- 
sels in the same manner that they affected the production of 
ears. 
