NOETHEEN GEEAT PLAINS FIELD STATIOIT IN 1923 3 
year in actual plantings of trees on their farms. The station operates 
a nursery for the production of planting stock, makes the planting 
plans after having insj)ected the land on which the trees are to be 
planted, and provides instructions for the planting and care of the 
trees. The farmer for his part agrees to plant and care for the trees 
in accordance with the plans and instructions given him. The 
number of plantings is limited to five in a county in one year. 
It is essential to the success of this project that only hardy stock 
of known origin be used. To insure this the nursery stock is pro- 
duced from home-grown seeds and cuttings. In 1923 the Siberian 
pea-tree, Russian-olive, and Tatarian maple had excellent seed 
crops, and ample supplies were collected. It should be possible to 
produce from this seed crop enough seedlings of the Tatarian maple 
to give this species its first extensive test in 1926. The boxelder 
seed crop was poor, and only a part of the desired quantity of seed 
was collected. The seed crop of green ash, American elm, and 
Chinese elm failed entirely. The northwest poplar made an ex- 
cellent growth of cutting stock, and an ample supply was obtained. 
Small quantities of seeds of pin cherry, chokecherry, and wild plum 
were also collected. Purchase was made of 5 pounds of seed of 
western yellow pine collected in the Black Hills near Rochford, 
S. Dak. 
The quantities of stock produced in the station nursery in 1923 for 
use in cooperative shelter-belt plantings are given in Table 1. 
Table 1. — Quantities of nursery stock produced in 1923 for use in cooperative 
shelter-belt plantings 
Group and variety 
Kind of stock 
Number 
Hardwoods: 
Northwest poplar . . 
1 -year rooted cuttings 
1-year seedlings. 
47, 770 
Boxelder 
28, 265 
2-year seedlings. 
47, 6eo 
40 000 
Siberian pea-tree 
do 
1-year seedlings.. 
5,217 
Wild plum 
2-year seedlings _. 
1,000 
250 
do 
Tatarian maple _ 
1-year seedlings 
1,300 
Black walnut ..- 
do 
420 
Total hardwoods . . 
171, 882 
2'-2 transplants 
Conifers: 
Western yellow pine 
2,098 
do 
4,57i 
Total conifers 
6,669 
conifers 
Grand total of both hardwoods and 
178, 551 
The 4D,000 Siberian pea-trees were obtained from Valley City, 
N. Dak., in exchange for cuttings of northwest poplar, as the seed 
planted at the station failed to germinate. 
In 1923 there were 1,085 shelter-belt demonstrations in active 
cooperation. The distribution of these by States and years in which 
they were planted is shown in Table 2. 
On January 1, 1924, there were 165 applications on file for plant- 
ings in 1924. The numbers from each State were: Montana, 50; 
North Dakota, 49; South Dakota, 50; and Wyoming, 16. 
