174 Lessons in Fruit Growing. 



during tlie fruiting season, when tliey are commonly 

 mulclied. New plantations are usually made in spring 

 {253). 



13. Winter protection is essential to the highest success 

 in strawberry culture, where much freezing occurs in win- 

 ter (251). Protection from frost during the growing season 

 may be given by covering the plants with litter (255). 



14. The strawberry leaf-roller and the strawberry leaf- 

 blight may be held in check by mowing over the planta- 

 tion after the fruiting season and burning the cut-off foli- 

 age (257-263). The root-borer, the crown-borer and the 

 may beetle are combated by digging out infested plants 

 and destroying the larvae (258-260). 



15. The strawberry saw-fly may be destroyed by spray- 

 ing the foliage with water containing hellebore powder 

 (261). The strawberry mildew may be held in check by 

 sprinkling flowers of sulfur upon the foliage and between 

 the plants, or by spraying with Bordeaux mixture (264). 



SUGGESTIONS FOR LABORATORY WORK 



1. Practice propagating the currant by layers and cut- 

 tings, and the gooseberry by mound-layering. 



2. Study the stems of the currant and gooseberry while 

 in flower or while bearing fruit, to ascertain the fruiting 

 parts. 



3. Study the insects and diseases affecting the currant 

 and gooseberry from the growing plants, and apply the 

 remedies therefor. 



4. Study the characteristics of different species and va- 

 rieties of the currant and gooseberry from living plants. 



5. Study the morphology of the strawberry plant by 

 washing out and examining plants of different ages. 



