IX
HOEING AND THINNING
When the young plants appear above the ground it is time to commence cultivating. This consists of breaking up and pulverizing the surface crust. There are several reasons for doing this. It allows air to enter the soil, which, it will be remembered, is a necessity for the roots of plants and has an important bearing on the formation of plant food. It keeps down the weeds, and, most important of all, it helps to conserve the moisture in the soil.
All who have had anything to do with the cultivation of the soil will have noticed that when its surface is stirred up after a rain it quickly dries out. It will also have been noticed that, if any one has walked over this soil just after it has been stirred up, the soil in the footprints remains moist. Why is this? It is simply that capillary action has been broken by the loosening of the surface, and the soil-water rises to the loosened soil and no farther. On the other hand, capillary action has been restored in those places where the soil has been compacted by walking on it, and the surface here is moist because moisture is continually being supplied from the store below. This moisture just as continually evaporates during dry weather and is lost as far as the plant roots are concerned.
Breaking up the surface soil provides a dust mulch or soil blanket which shades the moist soil below from the sun’s rays, and in a large measure prevents evaporation. Therefore, after every rain, just as soon as the soil has dried out sufficiently so that it does not stick to the tool used, the surface should be cultivated.
Various tools are used for this purpose. When working close to young plants the small hand weeders are useful. Between the rows a hoe should be used. These are of three types. The scuffle-hoe, which is pushed through the soil just underneath the surface, the operator walking backward. This is a handy tool for small gardens if the soil is not too hard, and its use gives the advantage of it not being necessary to walk on the loosened soil.
The ordinary draw-hoe is used with a chopping motion and the operator walks forward over the loosened soil. It is a good tool for getting rid of weeds, and is better than the preceding for use in hard or stony ground.
There are many forms of wheel-hoes which enable the work of cultivating to be done very expeditiously. They are pushed forward with a jerky motion, one step at a time, pulling the implement toward you before making the forward thrust, thus gaining momentum before the teeth enter the ground. Do not attempt to push a wheel-hoe in the same way that you would a perambulator—it’s too hard work.
To water or not to water is sometimes a debatable point in vegetable-growing. There is this much to be said about the application of water to the garden. If thorough cultivation has been properly attended to there will be much less need of watering, and when it is decided that watering is necessary, let it be thorough, so that the soil is soaked to a depth of a foot or so. Then as soon as the soil has dried out somewhat, stir up the surface so that the moisture is not lost by evaporation. The best way to apply water is by means of a sprinkler, throwing a fine spray, which can be left operating for two or three hours. This insures a proper wetting of the soil without washing away any of the loose soil on the surface. The next best thing is to use a hose. The watering-pot is of little use except in a very small garden, because one gets tired of toting water before the plants have been given nearly enough.
In order to obtain good crops it is necessary to allow the plants sufficient room to attain their full development. They must have space in the earth for their roots to ramify in search of food, and room above to spread their leaves to the air and sunshine. A number of seeds, including beet, carrot, corn, lettuce, onion, parsnip, radish, spinach, and Swiss chard, are sown in such a way (in order to insure a good stand) that when they germinate the young plants stand too close together. These have to be thinned out.[[3]] This operation should be carried out as soon as the seedlings are large enough to handle. Choose a cloudy day when the soil is fairly moist, and pull out the weak, spindly plants, leaving the strong, healthy ones.