EOSETTE OF PECAX TREES 7 
In Plate II is shown a typical tree as it appeared in the orchard in 
1918 and in 1923. A shows tree Xo. K-15 as it appeared in 1918 
and B as the same tree appeared in 1923. The two pictures 
were taken from the same position and at the same distance. The 
great improvement made is well illustrated here. 
GREENVILLE SANDY LOAM 
A second study was conducted on another orchard, located in 
Dougherty County in southern Georgia. This orchard was planted 
in 1909 to a number of varieties of pecan trees, including FrotscLer, 
Stuart, Van Deman, and Mobile. As in the former case, chemical- 
fertilizer experiments were undertaken to study the effect of various 
ratios on the rosette of pecans. Applications were made in 1918, 
1919, and 1920, using in the beginning 20 and later 30 pounds of 
fertilizer per tree, which is equivalent in the latter case to an appli- 
cation of 600 pounds per acre. The same effect was observed here 
as in the experiments on the Norfolk fine sandy loam of the Cairo 
orchard; that is, no beneficial results in rosette control were obtained 
from any of the chemical fertilizers, nor did the cultural system 
employed in this orchard, which was quite different from that in the 
former orchard, prove successful. 
CULTURAL SYSTEM EMPLOYED 
During the first eight years of the life of this orchard farm crops 
of corn and cotton were grown, and little or no vegetable matter 
was returned to the soil. No special attention was given to soil 
improvement; even the native grasses, whic^ produced luxuriant 
crops of hay, were cut and removed from the fields. The general 
method of culture of the orchard in 1918 and the four years fol 
ing has been to disk the soil very shallowly in early spring. In two 
of these years peas or beans were broadcasted between the tree 
and allowed to grow in competition with the native grosses and 
weeds. In the fall the vegetation, which was usually luxuriant, 
cut and cured for hay and removed from the field. The ground 
was left bare during the fall and winter and a light disking i 
again in the spring. At no time during the four years the orchard 
was under observation was the soil plowed or put in a good condi- 
tion. It became compact and hard and depleted in organic ma 
The fertilizer used in the experiment was spread on the surface and 
a light disk run over the ground. There was no indication of a bene- 
ficial effect of the fertilizer on the trees. However, the grass do 
a better growth and produced more hay. 
In Plate III, A and B, the orchard is shown as it was in 1919 and 
in 1922. The condition of the trees as well as the plan of orchard 
management is seen here. The grass and peas grown during the 
summer of 1919 and producing a good crop have been cut. piled, 
and cured, to be removed and used tor hay. The picture al 
the scant quantity of material left on the ground. In Plate il 
the weeds and native grass grown during the summer of 1922 are 
shown. It is seen that the trees have not improved since 1919. as 
they are here shown to be stunted and badly rosetted. 
