Complete Commercial Fertilizers

What are the principles of fertilization? Stated briefly, fertilization is practiced to supply the necessary essential elements to secure a normal growth of the plant. What is commercial fertilizer? The term “commercial fertilizer” applies to any carrier of essential nutrient elements, that is sol (by itself or mixed with other such carriers) commercially. How can … Read more

Soilless Culture

What is water culture? Growth of plants in a watertight container filled with a weak solution of fertilizer salts. What is sand culture? Growth of plants in a container of sand through which a weak fertilizer solution either drops continually, or is poured on at intervals. What house plants can be grown in sand culture? … Read more

Soil Alkalinity and pH

What is the best method for soil reconstruction? Our soil is of a lime structure (moderately alkaline). Our water is hard and slightly chlorinated. Compost at the rate of 1 lb. to a sq. ft. and 2-1/2 lbs. of superphosphate for each 100 sq. ft. This should be thoroughly mixed with the soil. Sow green … Read more

Using Cottonseed Meal as Fertilizer

What nutrients does cottonseed meal contain? Cottonseed meal contains approximately 7% nitrogen, 2.5% phosphoric acid, and 1.5% potash. How long does it take for cottonseed meal to mix with soil? Part of the nitrogen and other essential elements of cottonseed meal are readily available; the remainder becomes available more slowly. On what plants can cottonseed … Read more


Is there any way to add phosphorus to soil without using commercial fertilizer? Yes, in the form of pulverized phosphate rock, bone meal, or basic slag. All may take a year or more to become available. Are the effects of superphosphate somewhat similar to those of bone meal? Yes, the effects are similar. Bone meal … Read more

Plowing and Digging Soil

When should soil be tilled or plowed? Any time of year when not so wet as to roll in large clods, or so dry as to be a powdery dust. Does it harm soil to work it while wet? Yes, especially if the soil is heavy. Plowing compacts such soils, and clods and unbreakable lumps … Read more