Proceedings of the Society for Horticultural Science, 第 1-10 卷Society for Horticultural Science., 1905 |
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第 1 到 5 筆結果,共 100 筆
第 34 頁
... crops with cheesecloth until 1902 , when an interesting test was made with vegetables by Mr. Graham Bell , at his ... crop was not as large as out- side . At the Central Experimental Farm two small enclosures were made this year . In ...
... crops with cheesecloth until 1902 , when an interesting test was made with vegetables by Mr. Graham Bell , at his ... crop was not as large as out- side . At the Central Experimental Farm two small enclosures were made this year . In ...
第 35 頁
... crop , both inside and out- side , owing to the cool and wet summer , but all plants grew well in both places . Hand pollination would be necessary to insure a crop even in a favorable season , as few or no insects could get into the ...
... crop , both inside and out- side , owing to the cool and wet summer , but all plants grew well in both places . Hand pollination would be necessary to insure a crop even in a favorable season , as few or no insects could get into the ...
第 40 頁
... crops well adapted for shading are tobacco , rhubarb , celery , lettuce , dandelion , Swiss chard and asparagus , all of which have been successfully grown under cover . But shading is not applicable to crops grown for under- ground ...
... crops well adapted for shading are tobacco , rhubarb , celery , lettuce , dandelion , Swiss chard and asparagus , all of which have been successfully grown under cover . But shading is not applicable to crops grown for under- ground ...
第 74 頁
... crops and crop residues on the soil is another of the relationships of plants which imperatively demands attention ... crop , or favor- ably or unfavorably to other species which may follow . Thus a peach tree planted in the place of a ...
... crops and crop residues on the soil is another of the relationships of plants which imperatively demands attention ... crop , or favor- ably or unfavorably to other species which may follow . Thus a peach tree planted in the place of a ...
第 75 頁
... crops . The behavior of crops following clover was the chief fact upon which his " excretory theory " and the ear- ly systems of rotation were based . Until the discovery of the sym- biosis of bacteria and the legumes , it was held that ...
... crops . The behavior of crops following clover was the chief fact upon which his " excretory theory " and the ear- ly systems of rotation were based . Until the discovery of the sym- biosis of bacteria and the legumes , it was held that ...
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acid Agricultural College amount apples average Ben Davis bloom blossoms breeding C. I. LEWIS calyx cent Central Experimental Farm character climate color commercial committee course cover crop crop crosses cultivated culture disease dues effect Experiment Station fact factors farm favorable fertilizers floriculture flowers foliage fruit fruit buds fruit growers germination grade grapes greenhouse growing grown growth hardy horticultural Horticultural Science horticulturists hybrids important inches injury investigation L. H. BAILEY laboratory large number leaf light lime lime-sulphur MACOUN maturity McIntosh medium method Northern Spy orchard peach pistils plant breeding plant propagation plants Plot pollen pomology potato practical present PRESIDENT HEDRICK problems produced PROF PROFESSOR ripening roots season seed seedlings Society soil solution species specific gravity spray stamens sugar sulphur temperature tion tomatoes trees tubers twig U. S. Dept variation varieties vigorous vines Washington winter yellow yield
熱門章節
第 12 頁 - SEC. 2. That it shall be the object and duty of said experiment stations to conduct original researches or verify experiments on the physiology of plants and animals; the diseases to which they are severally subject, with the remedies for the same; the chemical composition of useful plants at their different stages of growth; the comparative advantages of rotative cropping...
第 81 頁 - As to the general effect produced by grass on young apple trees, the results of the last few years have brought forward nothing which can in any way modify our previous conclusions as to the intensely deleterious nature of this effect, and we can only repeat that no ordinary form of ill-treatment — including even the combination of bad planting, growth of weeds and total neglect — is so harmful to the trees as growing grass round them.
第 12 頁 - ... varying series of crops; the capacity of new plants or trees for acclimation; the analysis of soils and water; the chemical composition of manures, natural or artificial, with experiments designed to test their comparative effects on crops of different kinds; the adaptation and value of grasses and forage plants; the composition and digestibility of the different kinds of food for domestic animals; the scientific and economic questions involved in the production of butter and cheese; and such...
第 13 頁 - ... of crops ; the capacity of new plants or trees for acclimation ; the analysis of soils and water ; the chemical composition of manures, natural or artificial, with experiments designed to test their comparative effects on crops of different kinds ; the adaptation and value of grasses and forage plants ; the composition and digestibility of the different kinds of food for domestic animals ; the scientific and economic questions involved in the production of butter and cheese ; and such other researches...
第 81 頁 - The following gives the gist of the results of the experiments in question : "As to the general effect produced by grass on young apple trees, the results of the last few years have brought forward nothing which can in any way modify our previous conclusions as to the intensely deleterious nature of this effect, and we can only repeat that no ordinary form of...
第 81 頁 - The United States Department of Agriculture has published a number of observations and experiments to show that different plants growing in the same soil may poison each other. I am able to give also the results of a most excellent series of experiments planned and carried out on the Woburn Experimental Farm in England. These experiments were planned to show the effects of growing trees in grass, the latter to be used as a mulch. The following gives the gist of the results of the experiments in question...
第 91 頁 - For a more detailed discussion of this subject the reader is referred to Miner's Circular 4, "The Use and Care of Mine Rescue Breathing Apparatus,
第 40 頁 - Meyer, of the Bureau of Plant Industry of the United States Department of Agriculture...
第 70 頁 - Ib. per acre) have given almost exactly the same returns as the average check. The phosphate and potash combination has affected yield in this case rather decidedly, having raised it by 123 bushels per acre. This may be partly due to a slight superiority in location, as indicated by the fact that its adjacent check is the highest in yield and is within 88 bushels of the phosphate-potash treatment.
第 34 頁 - The origin, the first home of the plants most useful to man, and which have accompanied him from the remotest epochs, is a secret as impenetrable as the dwelling of all our domestic animals. . . . We do not know what region produced spontaneously wheat, barley, oats, and rye. The plants which constitute the natural riches of all the inhabitants of the tropics, the banana, the papaw, the manioc, and maize, have never been found in a wild state.