 | Connecticut. State Board of Agriculture - Agriculture - 1888 - 648 pages
...field, explained by experiments in the laboratory, has clearly demonstrated that: 1. Soils vary greally in their capabilities of supplying food to crops....Different ingredients are deficient in different soils. 2. Plants differ widely with respect to their capacities for gathering their food from soil and air.... | |
 | New Jersey. Board of Agriculture - 1883 - 680 pages
...amount of work done in field experiments with fertilizers has clearly demonstrated the facts that: 1. Soils vary greatly in their capabilities of supplying...Different ingredients are deficient in different soils. 'L Soils fail to furnish enough food to crops, not so much because they have not abundant stores, as... | |
 | Wilbur Olin Atwater - Agriculture - 1883 - 204 pages
...amount of work done in tield experiments with fertilizers has clearly demonstrated the facts that: , 1. Soils vary greatly in their capabilities of supplying food to crops. Different iugredients'are deficient in iliffereut soils. 2. Soils fail to furnish enough food to crops, not so... | |
 | New Jersey. Board of Agriculture - 1885 - 834 pages
...exhaustion. Lack of fertility is commonly due, in large part or entirely, to lack of plant-food. 4. Soils vary greatly in their capabilities- of supplying...ingredients are deficient in different soils. The chief lack of one may be potash, of another phosphoric acid, of another several ingredients, and so... | |
 | Massachusetts Horticultural Society - Agriculture - 1888 - 758 pages
...some other materials from the soil, but these are needed only in minute quantities, or not at all. 4. Soils vary greatly in their capabilities of supplying...ingredients are deficient in different soils. The chief lack of one may be potash, of another phosphoric acid, of another several ingredients, and so... | |
 | Storrs Agricultural Experiment Station - 1889 - 1114 pages
...Experience in the field, explained by experiments in the laboratory, has clearly demonstrated that: 1. Soils vary greatly in their capabilities of supplying...Different ingredients are deficient in different soils. 2. Plants differ widely with respect to their capacities for gathering their food from soil and air.... | |
 | Frank W. Sempers - Fertilizers - 1893 - 238 pages
...necessary quantities required for the production of the largest crops the land is capable of yielding. " Different ingredients are deficient in different soils....materials can be most economically supplied, is to put the question to the soil with different fertilizing materials and get the reply in the crops produced.... | |
 | Soil science - 1908 - 1062 pages
...and accurate knowledge concerning manures and their functions in relation to soils and crops. * * * Soils vary greatly in their capabilities of supplying...soils. The way to learn what materials are proper iu a given case is by observation and experiment. The rational method for determining what ingredients... | |
 | United States. National Conservation Commission - Natural resources - 1909 - 870 pages
...accurate knowledge concerning manures and their functions in relation to soils and crops. » « • Soils vary greatly in their capabilities of supplying...rational method for determining what Ingredients of plant food a soil falls to furnish In abundance, and how these lacking materials can be most economically... | |
 | United States. National Conservation Commission - 1909 - 862 pages
...and accurate knowledge concerning manures and their functions in relation to soils and crops. * * » Soils vary greatly in their capabilities of supplying...rational method for determining what ingredients of plant food a soil fails to furnish in abundance, and how these lacking materials can be most economically... | |
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Soils vary greatly in their capabilities of supplying food to crops. Different ingredients are deficient in different soils. The way to learn what materials are proper in a given case is by observation and experiment. The rational method for determining... 
