206 Bulletin 228. 



pear or peach orchard. All plats in cover-crop experiments J acre 

 in extent. Keep soil thoroughly stirred from spring until middle of 

 July, when seed should be sown. Seed furnished by the College. 

 Study also the influence on temperature of soil. Record tempera- 

 tures daily at noon in cover-cropped soil and in soil without cover. 



No. 31. Mulching vs. cover cropping. We want half a dozen 

 volunteers to undertake a serious comparison of these two methods 

 of managing orchard soil. We would like to include at least apples 

 and pears in the experiments; other fruits if possible. We should 

 like to include in the range of the experiments different types of soil. 

 Therefore a wide representation is desired. Particulars sent on ap- 

 plication. 



No. 32. Spraying experiment. Compare lime and sulphur with 

 Bordeaux mixture as a fungicide. Prepare according to directions 

 given in Spray Calendar. 



No. 33. Dust spray vs. Bordeaux mixture. (A limited number of 

 experiments.) 



No. 34. Spraying to prevent peach and plum rot. Ammoniacal 

 copper carbonate. Spray twice as fruit is ripening. Spraying mate- 

 rial furnished by the College. 



No. 35. Thinning fruit. Conduct careful tests on early apples 

 peaches and plums. 



No. 36. Strawberry. Variety test. 



No. 37. Raspberry. Variety test. 



Experimenters are requested to send the Department of Horticul- 

 ture descriptions of new varieties of fruits; samples of fruit will also 

 be gladly received and examined. 



IV. Entomology. 

 (M. V. Slingerland.) 



No. 41. Poison sprays for plum and quince curculios. Experi- 

 ments with arsenate of lead and arsenate of lime sprays. Specific 

 directions and arsenate of lead furnished by the College. 



No. 42. Spraying for grape root-worm. Experiments with arsen- 

 ate of lead spray to poison the beetles. Specific directions as given 

 in Bulletin 208 or the Spray Calendar. (Bui. 217.) 



No. 43. Spraying and timely cultivation for the rose-chafer. Spe- 

 cific advice in regard to time to cultivate to kill the pupse, and direc- 

 tions given for spraying with arsenate of lead to kill the beetles. 

 Poison furnished by the College. 



