Proceedings of the ... Annual Meeting of the Society for the Promotion of Agricultural Science, Volume 11, Parts 1890-1897Farmer and Daryman Pring, 1890 |
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A. J. Cook abundant acid acre Advancement of Science Agricultural College Agricultural Experiment Station Agricultural Science American Association amount animals anthrax applied arabinose average Bordeaux mixture Botany Bulletin cent Chemist clover corn cottonseed meal crop cultivation culture Director disease early emulsion ensilage Entomologist feed fertilizers flowers fodder foliage free oil fungus gallons germination grain grams grass growing growth inches increase injury inoculated insects Iowa July June June 26 kerosene larvæ late leaves lime London purple maize manure method milk Nebraska nitrogen obtained panicle Paris green pentosans digested Phytophthora infestans plants plats Plum pollen potato pounds present produced Prof Professor of Agriculture roots season seed serum smut soap Society soil solution sorghum species sprayed stalks sugar tion trees tubers U. S. Department Untreated varieties W. J. BEAL weeds wheat yield
Popular passages
Page 117 - B. Carpenter pointed out to physiologists the "distinction between the dynamical and the material conditions: the former supplying the power which does the work, whilst the latter affords the instrumental means through which that power operates.
Page 87 - ... symbiosis, as now used, is limited to the mutually beneficial relations of certain species living together in harmony, but the biological •relations of mutual dependence presented by microbes and the plants growing in the soil, may extend to a series of organisms, each of which has its .influence on the well being of the others. The activities of microbes in soil metabolism are not limited to processes of putrefaction and nitrification. In the author's experiments with soil .microbes they proved...
Page 63 - ... from one half to three fourths of one per cent is necessary for the same purpose. But any further addition of lime to such soils changes the character of the vegetation no further, unless pushed to the extent of modifying materially its physical condition.
Page 115 - We are in the case of Tarpeia, who opened the gates of the Roman citadel to the Sabines, and was crushed under the weight of the reward bestowed upon her. It has become impossible for any man to keep pace with the progress of the whole of any important branch of science.
Page 67 - Third. — Observe and record carefully the normal vegetation, trees, herbs, grass, etc., of the average land ; avoid spots showing unusual growth, whether in kind or quality, as such are likely to have received some animal manure, or other outside addition.
Page 67 - ... may be taken with less exactness, perhaps at some ditch or other easily accessible point, and should not be broken up like the other specimens. " Seventh — All peculiarities of the soil and subsoil, their behavior in wet and dry seasons, their location, position — every circumstance, in fact, that can throw any light on their agricultural qualities or peculiarities — should be carefully noted, and the notes sent with the specimens.
Page 116 - It appears to me that the only defense against this tendency to the degeneration of scientific workers lies in the organization and extension of scientific education in such a manner as to secure breadth of culture without superficiality ; and, on the other hand, depth and precision of knowledge without narrowness.
Page 122 - Foster expresses substantially the same conception in defining living substance as " not a thing or body of a particular chemical composition, but matter undergoing a series of changes. " These definitions fairly represent our present knowledge of vital activities. Metabolism with its " simultaneous and successive" phases of anabolic and katabolic transformations of matter and energy, is admitted to be an essential condition of life in all tissues and elements of the body. As living matter...
Page 66 - ... be indefinitely repeated : First— Do not take samples indiscriminately from any locality you may chance to be interested in, but consider what are the two or three chief varieties of soil which, with their intermixtures, make up the cultivable area of your region, and carefully sample these, first of all, then sample your particular soil with reference to these typical ones.
Page 70 - Let us take, first, the case of a predaceous beetle feeding upon a variety of other insects, — either indifferently upon whatever species is most numerous or most accessible, or preferably upon certain species, resorting to others only in case of an insufficiency of its favorite food. " It is at once evident that, taking its food-insects as a unit, the same reasoning applies as if it were restricted to a single species for food : that is, it is interested in the maintenance of these food-species...