Material and apparatus. Small vineyard; pruning-shears, pruning-knife.

Discuss in detail the pruning of the grape. Where are the fruit buds found? Do they occur on the present season's wood or later? Tell why it is advisable to prune the grape to three or four buds. Does this method of pruning reduce the yield of the crop? Is it an advantage or a disadvantage to use this method? Discuss. Describe in detail each of the following methods:

1. Renewal system of pruning.

2. Marvin's system of fan pruning.

3. Kniffin system of pruning.

4. Y-trunk Kniffin system of pruning.

5. Double Kniffin system of pruning.

6. Overhead Kniffin system of pruning.

References

Bailey, "The Pruning Book," chap. viii.

Bulletin No. 193, California Agricultural Experiment Station. Circular No. 16, New York Agricultural Experiment Station. Year Book of the Department of Agriculture, 1896, pp. 499-542.