plant-growth

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They may be divided into _general_ manures and _special_ manures, according as they contain all the elements necessary for plant-growth, or only some of them; or they may be divided according to their source into _natural_ and

Manures and the principles of manuring Charles Morton Aikman

It was found that when the sawdust Was compressed to any extent, plant-growth took place very slowly, or entirely ceased.

Manures and the principles of manuring Charles Morton Aikman

Especially during the early stages of plant-growth this source of carbon may be of considerable importance.

Manures and the principles of manuring Charles Morton Aikman

The nature, mode of action of the different compounds, and properties of these three substances, and their comparative influence in fostering plant-growth, together with the economic question of which form is, under various circumstances, the most economical for the farmer to use, have together given rise to a large number of "field" and "pot" experiments.

Manures and the principles of manuring Charles Morton Aikman

Despite these facts, there are many cases where the addition of potassic manures is of the highest importance in increasing plant-growth.

Manures and the principles of manuring Charles Morton Aikman

The amount of water in a soil most favourable for plant-growth is a question of considerable difficulty.

Manures and the principles of manuring Charles Morton Aikman

Action of light on plant-growth, Dr Siemens 'experiments 38

Manures and the principles of manuring Charles Morton Aikman

[22] The length of the day has an important influence on plant-growth, as is evidenced by the rapid growth of vegetation in Norway and Sweden.

Manures and the principles of manuring Charles Morton Aikman

[4] Priestley, however, did not realise that _carbonic acid gas_ was a necessary plant-food; on the contrary, he considered it to have a deleterious action on plant-growth.

Manures and the principles of manuring Charles Morton Aikman