972 EXPERIMENT STATION RECORD, 



Dakota, aw discusseil. Trees plaiittMl for groves sliould be spaced about 2 ft. apart 

 in tlic row, witli the rows about 8 ft. apart. The elm, ash, and l)asswood may l)e 

 used for i)ermanent trees; while trees like the box elder, which makes a quick 

 growth, may be used simply as nurse trees. 



Every otlier tree in the row should be a nurse tree. Other timber trees successful 

 in North Dakota are the silver maple, white willow, golden Russian willow, burr 

 oak, white i)oplar, hackberry, and American white birch. Directions are given for 

 planting trees in lawns and along streets, and for tin; best methods of j)runing. 



The best methods of growing and pruning ornamental and i)rotective liedges are 

 discus.sed, and also the various kinds of shrubs and tret^s which may be used fortius 

 purpose. The golden Russian willow is considered especially satisfactory for hedges, 

 since it grows readily from cuttings and is very ornamental, and when desired will 

 develop sufficiently to furnish protection for stocik. 



StrawT)erries have been successfully grown nearly every year since the station 

 windbreaks have grown large enough to afford protection. For this fruit the shelter 

 should be along the south, as destructive winds come from that quarter. Of the 

 strawberries which have been grown the heaviest yielding varieties mentioned in 

 the decreasing order of their productiveness are Warfield, Tennessee, Prolific, 

 Emperor, Senator Dunlap, Sam{)le, Wm. P>elt, P>eder Wood, Drouth King, and New 

 York. A very large nundter of wild plums are growing at the station, and these 

 lia\(' jii-oved a very satisfactory fruit. 



Some Russian apples have been grown, and in addition Lyman Prolilic;, Wealthy, 

 Patten Greening, and several crabs as well as other varieties of apples. Apples 

 appear to do best Avhen headed very low. Trees which are headed right at the 

 ground after tiie original tree has been killed back often prove the most profitable. 

 In .setting out trees in Dakota it appears desirable to plant them from 6 in. to a foot 

 dee]ier than they grew in the luirsery. It is not thought advisable to attempt to 

 grow ai)ples without a shelter belt on the south and west side of the orchard. Two- 

 year-old trees, or even root gi'afts, are believed most suitable for setting out in the 

 orchard. 



Trees and shrubs for shade and ornament, F. Cranefield ( Wisconsin iSta. Jyiil. 

 108, pp. f;o, fi(jK. 47). — The author discusses the characteristics and value of a large 

 number of trees and shrubs which may be grown for shade and ornament in Wis- 

 consin. Numerous illustrations are given showing the various effects which may be 

 obtained in using different trees and shrubs. The apjiendix contains lists of the 

 deciduous and evergreen trees and shrubs which have been tested at the station and 

 found satisfactory, as well as a list of those which have been found unsatisfactorj'. 

 In addition, a list is given of native shrubs desirable for planting on home grounds, 

 and tal)les showing the comparative height at maturity of different shrul)s. 



Forcing' lilacs after preliminary etherization, G. Bellaiu {llcr. Ilort. [Paris'], 

 76 {1904), No. 4, P- S4)- — In the experiments here noted lilacs etherized for 89 hours 

 flowered 17 days after putting in the forcing house. Snowballs ( Vihtirnum opulus 

 sterllis) etherized for the same period attained full flower development 25 days after 

 jjutting in the forcing house. In these experiments the lilacs were forced at a tem- 

 perature of 25° C. 



DISEASES OF PLANTS. 



Potato experiments in 1903, C. D. Woods {Maine Sta. Bui. OS, pp. 181-192).— 

 The experiments reported in this bulletin include a variety test of resistance to blight, 

 study .of the effect of Bug Death and Paris green on healthy potatoes and the use of 

 prepared and quick lime in the preparation of Bordeaux mixture. Several rows of a 

 number of varieties of potatoes were planted, a few of each variety being sprayed 

 with Paris green to kill potato beetles and the other half being si)rayed with Bor- 

 deaux mixture and Paris green. The latter ai)plication was made six times during 

 the season. 



