. Laboratory lessons in general science . e kinds of stuff you would raise in your garden. 7. Name both advantages and disadvantages (a) fromalternating rows of corn and of potatoes; (b) from havingsquash or pumpkin planted in among the corn. 8. Why is it undesirable to havetrees, shrubs, or bushes in the gardenspace? What small fruits may easilybe grown out at one side of the garden ? TREE PLANTING 1. Have you ever helped plant atree ? What kind of tree did you plant ?Was it for shade, or for fruit bearing? 2. In your locality what are goodkinds of trees to plant for shade?Where may these be
. Laboratory lessons in general science . e kinds of stuff you would raise in your garden. 7. Name both advantages and disadvantages (a) fromalternating rows of corn and of potatoes; (b) from havingsquash or pumpkin planted in among the corn. 8. Why is it undesirable to havetrees, shrubs, or bushes in the gardenspace? What small fruits may easilybe grown out at one side of the garden ? TREE PLANTING 1. Have you ever helped plant atree ? What kind of tree did you plant ?Was it for shade, or for fruit bearing? 2. In your locality what are goodkinds of trees to plant for shade?Where may these be obtained ? Aboutwhat is their cost per tree? What isa good choice of shade tree for plantingas to (a) age; (b) diameter; (c) height ?Why not use older and larger trees fortransplanting? In what respects is itgenerally better to purchase trees thathave been grown in a local nurserythan to get them from a distant partof the country ? 3. Why will the growth of a newly set tree necessarilybe slow at first? In order that food material for the. Fig. 48. — Before set-ting out a young tree,its top and rootsshould be cut backas indicated by thedotted lines. Thetop will then havethe appearance shownin a. 106 LABORATORY LESSONS IN GENERAL SCIENCE growth of plants can be taken in through the roots, in whatcondition must this material be ? 4. That the young tree be well nourished from the firstafter transplanting, (a) what form of root is desirable; (b)what should be the condition of the soil filled in around theroots; (c) why pour water about the roots, and wThat amountshould be used; (d) why press the earth firmly about theroots ? 5. Why is such great harm done in an exposure of therootlets to air and sun even for a very short time? Whilethe planting of trees is going on, how may the roots of thoseawaiting planting be kept from injury? What purpose isserved by leaving two or three inches of top soil loose and dryaround each tree planted? What is meant by heeling intrees for later planti
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