Jan. 1923] annual repobt 25 



until the cotyledons had fallen. Spraying with Bordeaux mixture gave 

 better results than dusting, and covering the plants gave a very satisfac- 

 tory degree of control. Heating diseased seed was not found to give the same 

 degree of protection as the other methods tried. 



Snapdragon Rust and Its Control. 



Experiments on the field control of the snapdragon rust have been con- 

 tinued by Mr. Butler, and it has been definitely ascertained that neither 

 sulphur nor the copper fungicides will afford the necessary degree of pro- 

 tection. The copper fungicides are not sufficiently toxic to prevent the 

 germination of the spores, and the temperature prevailing during the 

 spring at Durham is not high enough for sulphur to act. 



Small Fruits Proect. 



The usual records were taken on the raspberry and blackberry variety 

 and fertilizer experiment. As in previous seasons Herbert proved to be the 

 best of the red raspberries planted. Snyder proved a better blackberry 

 under conditions at the Station than did Eldorado. No definite conclusions 

 can be drawn as yet as to the result of the various fertilizer applications, 

 which include both top dressing with manure and fertilization with com- 

 plete chemical fertilizers. 



As a new part of this project an experiment has been begun on the use 

 of nitrate of soda as a fertilizer for strawberries; but results are not signif- 

 icant for this year's test. 



Soil Fertility in the Garden. 



The soil fertihty garden plots, which are being studied over a period of 

 years by Mr. Hepler, were planted to Bountiful bush beans, grown for the 

 green pods for canning purposes. They were planted June 15. Plots 3 

 and 7, the green manure plots, were plowed early and planted with oats, 

 which were nearly a foot high when turned under. The season was very 

 wet, but the yield was not appreciably affected. The data are recorded 

 in pounds of snap pods per plot. 



The different plot treatments are as follows: 



Plot 1 — 32 tons of manure per acre. 



Plot 2 — 24 tons of manure per acre and the following commercial fer- 

 tilizers per acre: 



150 pounds Tankage. 



100 " Nitrate of Soda. 



600 " Acid Phosphate. 



150 " Muriate of Potash. 

 Plot 3 — Green manure plus the following commercial fertilizers per 

 acre : 



160 pounds Nitrate of Soda. 



250 " Tankage. 



800 " Acid Phosphate. 



300 " Muriate of Potash. 

 Plot 4 — 16 tons of manure and the same fertilizer treatment as Plot 3. 

 Plot 5— Check plot. 



Plot 6 — 8 tons of manure and the same fertilizer treatment as Plot 3. 

 Plot 7 — Green manure plot. 



