Ontario Teachers' Manuals: Nature Study Part 36

Plant in each can a healthy plant of the same size and kind. Water both till the soil is saturated and continue watering every two or three days for six weeks. Note (1) the progress of the plants, (2) the temperature of the soils, (3) which plant has the largest and deepest roots. (See _Bulletin 174_, Ontario Department of Agriculture.)

10. Take five equal-sized boxes, provide for drainage, and fill No. 1 with wood, earth, or humus, No. 2 with clay, No. 3 with sand, No. 4 with a mixture of clay and humus, No. 5 with a mixture of sand and humus.

Plant corn in each box, set in a warm room, and keep watered for two or three weeks. Note in which case growth is most rapid. Set boxes in a dry place and cease watering. Which suffers most from the drought? Which bakes hardest in the sun? Test the temperature of each after watering and standing in the sun for an hour. Sand is warmer than clay, also the presence of humus raises the temperature. This item is important, since most seeds decay instead of sprouting if the temperature is below 45 Fahrenheit.

11. Enumerate the services rendered to the soil by humus.

12. In Experiment 10, let the corn grow for some time and determine whether the very rich humus is the best in the end. Sand and clay are almost altogether mineral; leaf-mould almost entirely organic; neither alone is good, but a mixture gives the best results.

GARDEN WORK

The boys of this Form should attend to the fertilizing and spading of the plots belonging to the girls of their Form. The girls themselves can do all the rest of the work, and they should try to keep the plots level, uniform in size, and in a straight line. If the corner posts are kept in line and the plots made up the exact size, the appearance of the garden will be greatly improved.

The pupils are now old enough to make their own choice of flowers and vegetables. Very tall growing plants, such as corn and sunflowers, are not desirable in individual plots as they shade other plants near them.

Corn is best grown in a large plot about twenty feet square. The same may be said of vines, such as cuc.u.mbers, melons, squash, etc. If the plots are small, it is better to plant but a single variety, but in large plots from two to four varieties may be arranged to advantage.

Usually rows of vegetables, such as carrots and beets, may be placed a foot apart, cabbage about twice that distance, and tomatoes a little farther apart than cabbage.

Generally speaking, plants should be placed so that when full grown they will just touch, cover the ground completely, and thus prevent the growth of weeds.

As soon as the young plants appear above the ground, light cultivation with rakes and claw-hand weeders should be started, so as to keep weeds from growing and at the same time to provide a loose surface or earth mulch for conserving the moisture and aerating the soil. Thinning should also be begun when the plants are quite small, but it should not all be done at once. As the plants increase in size, the best ones should be left and the poor ones taken out. In some cases plants thus removed may be re-set to fill vacant places.

TREE SEEDS

Tree seeds that have been stored over winter should now be planted in rows in a small plot. The rows should be a foot apart and the seeds quite close together in the row. A cheese-cloth or slat shade should be used on this plot, as the hot sun is too strong for tree seedlings when they first come up. They should have cultivation every week and watering in dry weather. Always water in the evening after school, or even later when possible.

TRANSPLANTING

Pupils in this Form should have practice in transplanting, as well as in sowing seed. For this purpose seeds should be started about the first of April in hotbeds or window boxes, seedlings transplanted into cold frames when two or three inches high, and then set out in the garden in the latter part of May when danger of frost is past.

TRANSPLANTING FLOWERS AND VEGETABLES

Choose, if possible, a cool cloudy day. Water the plants thoroughly in the hotbed or cold frame a few hours before lifting them. Lift them with a trowel or small spade, and keep as much earth on their roots as possible. With a transplanting trowel, make holes deep enough so that the plant will be a little deeper in the soil than before transplanting.

Unless the soil is moist, a little water put in the hole with the plant is beneficial. The evening is considered best for transplanting if the weather is clear. If the sun is very hot, the plants should be shaded for a few days until the roots become established and begin their work.

s.h.i.+ngles slanting over the plants from the south side and driven into the ground to hold them in position are best. Papers held by means of two stones also give good results. The practice of covering them with inverted cans is not a good one, as the light is almost completely cut off. A few holes in the can would help considerably. Care must be taken to pack the earth firmly about the roots. Watering again twenty-four hours after transplanting is often necessary. If the plant has a leafy top, it is best to take off some of the leaves, as they tend to give off water more rapidly than the roots can at first take it in.

TRANSPLANTING TREE SEEDLINGS

Nuts and other tree seeds collected the previous autumn should now be planted in the forestry plots in rows a foot apart. As the seeds may not all grow, they may be planted close together in the row and thinned out the following spring if necessary. They need some shelter from the sun the first summer. In large plots this is provided by means of a slat covering, but in a small plot cheese-cloth tacked on strips and fastened on corner posts is satisfactory. When a shower comes, this cheese-cloth screen should be removed so that the rain may moisten the plot evenly.

Seedlings may be transplanted from the woods or from the forestry rows before the leaves open out.

BUDDING

In budding, a slit like the letter T is made in the side of the young seedling close to the ground. The bark is raised a little at the point where the vertical slit meets the horizontal one, and a bud of desired variety with a s.h.i.+eld-shaped bit of bark (and perhaps a little wood) attached to it is shoved in and the sides of the slit bound down upon it. After the bud, or scion, has started to grow, the stock is cut off an inch above the point where the bud was inserted. The bud then makes rapid growth, and in two years the resulting tree is large enough to set in its permanent place in the orchard.

CUTTINGS

Pupils in this Form should try to grow such woody plants as roses and grapes from cuttings. Roses are frequently propagated by budding, as in the case of apples and peaches. They may also be grown upon their own roots or from stem cuttings. Such cuttings should be from well-matured wood of the present year taken in the autumn and packed in moist sand over the winter. Make the cuttings about three inches in length. The top end should be cut off immediately above a bud and the bottom end just below a bud, as roots seem to start more readily from a node, or bud.

Such a cutting may have three or four buds of which only the upper two need be left. If both of these grow, the poorer one may afterwards be removed.

These rose cuttings should then be inserted in a box of clean, moist sand to a depth of two inches, kept in a warm room, and shaded with a sheet of newspaper when the sun is very bright. Keep the sand moist but not wet, and when possible have gentle bottom heat. When roots have made some growth, transplant carefully into small flower-pots, using fairly rich, clay loam. In a few weeks they will be ready to plant out in the garden.

Grape cuttings should be taken late in the fall when the vines are well matured. Such a cutting includes only two joints, the upper one being the growing end and the lower the rooting end. They must be stored over winter in cold, moist sand, but should not be permitted to freeze. As soon as the ground can be prepared in the spring, set them out. They should be placed on a slant of about forty-five degrees and covered all but the top bud.

LEAF CUTTINGS

Some plants with large and vigorous leaves, such as many of the begonias, may be propagated by means of leaf cuttings. Buds readily develop from cuts made in the large veins. Take a full-grown healthy leaf and remove the stem all but about half an inch. Make a few cuts across the larger veins on the under side of the leaves at points where main veins branch. Press the leaf firmly down on the top of a box of moist sand with the under side next the sand. Keep the leaf in this position, using small stones or little pegs pushed through the leaf into the sand. Put the box in a warm room and do not let the sand become dry.

When roots strike into the sand and buds develop from the points where the veins were wounded, take a sharp knife and cut out the new plant from the old leaf and transplant it into a small flower-pot in good soil. Sink the pot in a box of moist sand to prevent its drying out.

ROOT CUTTINGS

Such plants as "sprout from the roots" may be propagated by root cuttings. Sections of underground stems may also come under this heading, as in the case of horseradish cuttings. But real roots may be used for cuttings, as in the case of the blackberry and raspberry. The roots should be cut in pieces three or four inches long, planted in a horizontal position, and entirely covered with two or three inches of soil.

LAYERING

Bush fruits, such as currants and gooseberries, are frequently propagated by stem cuttings, as in the case of roses. Another method, which is known as layering, consists in bending one or more of the lowest branches down against the ground, fastening it there by means of a forked stick, and then covering it with two or three inches of earth.

The part in contact with the moist earth will send out roots, while one or more shoots will come up. When roots and shoots have developed, the branch is severed from the parent bush and the new plant set in its permanent place. Strawberries exhibit a sort of natural layering.

PLANTING AND CARE OF HERBACEOUS PERENNIALS

Perennials grown from seed the previous summer should now be set in clumps two or three feet apart in the perennial border or here and there beside the fences or walks. The soil should be made fine and fertilized with well-rotted manure from the compost heap before setting out the young perennials. Dahlias and gladioli which were taken in in the autumn should now be set out. The dahlias should be divided and only the best roots used. Other perennials that have grown into large clumps should be dug up, divided, and re-set in well-fertilized soil.

GARDEN STUDIES

Pupils in this Form have now had enough experience in the growing of vegetables and flowers to allow them to make intelligent variety tests.

They should grow some of the less familiar varieties and report on the merits of each variety tested. This, however, should not be carried on to the exclusion of the well-known standard varieties. Let the pupils consult the best seed catalogues available and choose for themselves some varieties not already known to them. They should keep a systematic record of all varieties grown and the methods used in cultivating, fertilizing, etc. The knowledge thus gained will be of value in after years, and the homes will also benefit by it.

BIENNIALS

The pupils should observe the second year's growth of biennials. A special plot in the school garden should be set apart for this purpose.

Have them plant in it a turnip, a carrot, a beet, a cabbage, or any other garden biennial saved over winter for the purpose. If desired, the pupils might grow their own seed of these varieties. Notice (1) what part of the plant has become enlarged with stored up food and how big it is when planted, (2) how this part changes in size and texture as the flowers and seeds develop, (3) in what way this extra food seems to have been used.

WILD FLOWERS

STUDY OF THE TRILLIUM

The pupils bring the plants for the lesson. There should be a few purple trilliums among the white, and some of the plants should have the underground parts intact.

Discuss with the collectors their observations on where the trilliums grow, the kind of soil, the depth of the root-stocks below the surface, the uses of the root-stocks, insect visitors.

CLa.s.s-ROOM LESSON

The pupils are directed to examine the plant and flowers and find out all the means for attracting insects.

Find out why the purple trillium attracts flies and beetles, while the white trillium attracts bees and b.u.t.terflies.

Look into the top of the flower; what figure do the tips of the six flower leaves form?

Using the names calyx and corolla, describe the circle of flower leaves as to number, colour, and relative position.