The substances fall into two groups: (1) Those that apparently become indifferent in high dilutions and never produce any increase in plant growth.
While silver salts are very injurious to plant growth it was found that water that had been in contact with pure metallic silver had no harmful action.
Generally speaking perfectly clean sand is used varying in coarseness in different tests, and this is impregnated with nutritive solutions suitable for plant growth.
Hence, any study of the chemistry of plant growth is essentially a study of the chemical and physical changes which take place in the cell protoplasm.
In dry or desert regions, where the conservation of moisture is essential to plant growth, water storage by leaves is nearly as great an aid to the plant as we have seen it to be in the stems of cactus, South African spurges, etc.
For all of them belong to one of these types of plant growth, and the ancient students of plants, just before the time of Christ, actually divided all flowering plants into these three classes.
From there its many descendants, now ramified into hundreds of genera and over eleven thousand species, have spread to the very limits of plant growth.
Do they have any influence over the conditions which are favorable or unfavorable to plant growth?
Its presence or absence greatly influences the attitude of soils toward water, the most important factor in plant growth.
Organic matter decomposing in soil opens and loosens soil and makes the earth far more welcoming to plant growth.
When tilled into soil at that point, compost doesn't act at once like powerful fertilizer and won't immediately contribute to plant growth until it has decomposed further.
I have observed marked improvements inplant growth by incorporating ordinary basalt dust that I personally shoveled from below a conveyor belt roller at a local quarry where crushed rock was being prepared for road building.
In fact, they were obtained under conditions really unfavorable to plant growth.
The system of dry-farming must marshal and organize all the established facts of science for the better utilization, in plant growth, of a limited rainfall.
There must be a large amount of high fertility available for plants in order that the small amount of water can be fully utilized in plant growth.
Illustration: (Courtesy New Jersey Department of Conservation and Development) Soil is created from rock by nature's weathering processes and by plant growth.
In addition to supplying essential plant food, nitrogen, phosphorus and potassium perform specific functions in plant growth.
Every type of real soil contains all the elements of plant growth.
Our knowledge of the soil in its relation to plant growth, the control of plant diseases, and the laws of plant improvement, have all come to us in recent years.
The above list will hopefully provide you with a few useful examples demonstrating the appropriate usage of "plant growth" in a variety of sentences. We hope that you will now be able to make sentences using this group of words.
