8 BULLETIN 592, U. S. DEPARTMENT OF AGRICULTURE. 
Lesson 4. — Varieties of Fruits for the South. 
1. Varieties of general importance. 
2. Varieties of local importance or value. 
Special references. — Fruits Recommended by American Pomological Society for 
Cultivation in Various Sections of the United States and Canada. Revised by Com- 
mittee of American Pomological Society. Bureau of Plant Industry Bulletin 151. 
"Promising New Fruits" in each of the Yearbooks. Apples: Production Estimates 
and Important Commercial Districts and Varieties, Department Bulletin 485. 
Lesson 5. — Orchard Soils. 
1. Relation of soils to types of fruit. 
2. Relation of soils to varieties of fruit. . 
3. Relation of soils to water supply. 
4. Relation of soils to tillage and management. 
Lesson 6. — Preparing the Land. 
1. Necessity of thorough preparation before planting. 
2. Lands to be irrigated or needing drainage. 
3. Preparation of new lands. 
4. Plowing, subsoiling, and other operations. 
Lesson 7. — Laying out the Orchard. 
1. Distances to plant. 
2. Systems of orchard planting. 
3. The question of interplanting. 
4. Staking out the orchard. 
illustrative material. — Charts showing planting systems. 
Lesson 8. — Planting the Trees. 
1. Time of planting. 
2. Care of trees before planting. 
3. Details which mean much in planting. 
4. Planting implements and methods. 
Exercise 1. — Planting Orchard Trees.- 
On trie school farm, the home farm of the students, or upon farms 
neighboring the school. 
Lesson 9. — Cultivation of the Orchard. 
1. Purposes of tillage. 
2. Tillage implements. 
3. Methods of cultivation. 
Lesson 10.— Green Manures and Cover Crops. 
1. Clean tillage v. sod. 
2. Value of special crops for green manuring. 
3. The problem of erosion and the use of cover crops. 
4. Suitable crops and their management. 
Lesson 1 1 . — Fertilizers. 
1. Effects of fertilizers upon trees and fruits. 
2. Use of barnyard manure. 
3. Commercial fertilizers and their application. 
Illustrative material. — Samples of commercial fertilizers. 
