AGRICULTURE FOR SOUTHERN SCHOOLS. 9 
Lesson 12. — Intercropping. 
1. Advantages of intercropping. 
2. Dangers of intercropping. 
3. Poor crops to grow between trees. 
4. Good crops and their management. 
Lesson 13. — Friends and Foes of the Fruit Grower. 
1. Birds in the orchards. 
2. Work of the honeybee. 
3. Extent of insect injury. 
4. Extent of losses from disease. 
5. Other orchard pests. 
Special references. — The following Farmers' Bulletins: 506, Food of Some Well- 
known Birds of Forest, Farm and Garden; 630, Some Common Birds Useful to the 
Farmer; 670, Field Mice as Farm and Orchard Pests; 702, Cottontail Rabbits in 
Relation to Trees and Farm Crops. 
Lesson 14. — Insect Pests and Their Control. 
1. Classification of insects according to nature of injury and method of control. 
2. Control of sucking insects. 
3. Control of biting and boring insects. 
4. Natural enemies of insects. 
5. Value of clean cultivation and sanitation. 
Illustrative material. — Mounted insects and specimens showing insect injury. 
Special reference. — Collection and Preservation of Insects and Other Materials for 
Use in the Study of Agriculture, Farmers ' Bulletin 606. 
Exercise 2. — Mixing Insecticides. 
For spraying exercise to follow. May be necessary to combine 
Exercises 2 and 3. 
Lesson 15. — Some Common Insect Pests. 
1. Insects attacking the pome fruits. 
2. Insects attacking the stone fruits. 
3. Miscellaneous insects of importance. 
Special references. — The following Farmers' Bulletins: 440, Spraying Peaches for 
the Control of Brown Rot, Scab, and Curculio; 492, The More Important Insect and 
Fungus Enemies of Fruit and Foliage of the Apple; 650, San Jose Scale and Its Con- 
trol; 662, Apple Tree Tent Caterpillar; 675, Round-headed Apple Tree Borer; 723, 
Oyster-shell Scale and the Scurfy Scale; 845, Gipsy Moth and Brown-tail Moth. The 
following circulars of the Bureau of Entomology; 20, The Wooly Aphis of the 
Apple; 54, The Peach Tree Borer; 131, How to Control Pear Thrips. Articles in the 
following Yearbooks: 1907, Codling Moth or Apple Worm; 1908, Information About 
Spraying for Orchard Insects; 1913, Bringing Applied Entomology to the Farmer. 
Exercise 3. — Spraying for Insect Pests. 
Wherever possible this should be a class practicum upon the school 
farm or farms neighboring the school. If the school does not own a 
spraying outfit it may be possible to borrow one. It is preferable 
to spray where the work is really needed and with a view of accom- 
plishing practical results. If it is impossible to carry out spraying 
as a class practicum it should be encouraged as a home practicum. 
Special reference. — Important Insecticides, Farmers' Bulletin 127. 
8210 D — 17— Bull. 592 2 
