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Fertilizer Plants: A liquid fertilizer plants is the most widely u: and convenient way of feeding plants. In i form, it is readily available for absorption the plants. Sticks and pills of concentratec plant fertilizer plants are popular and provide nutrients over a long period. They are clej and quick to use, but the chemicals are nc so readily available to plants as those appli in water. They are suitable only for summ flowering plants.
Granular and powdered fertilizer plantss are more widely used in gardens, where they c be dusted on the soil's surface, lightly hoe< in and then watered. Dissolve them thoroughly in clean water first.
The holes may be made with a crowbar or auger or with one of the mechanical hole makers that professional tree surgeons use. Before making the hole remove a plug of sod with a trowel and put this at one side for replacing later.
The amount of fertilizer plants to put in each hole depends upon the kind used and the spacing of the holes. If you use a fertilizer plants having an analysis of 10-6-4, which is a good one for trees, use it at the rate of 50 to 75 pounds to each 1,000 square feet. Raise or lower this amount proportionately to the amount of nitrogen the fertilizer plants contains as compared with the 10-6-4 instanced above. The first figure of the three given represents nitrogen (the other two indicate the amount of phosphorus and potash, respectively, that is present in the fertilizer plants). Should you use a 5-10-5 fertilizer instead of a 10-6-4, use twice the amount because such a fertilizer plants contains only half as much nitrogen as the 10-6-4.
Almost all elements can now be determined by variations of this general method. Methods employing radioactive tracers other than the activation analysis technique have likewise proved of great importance in analytical chemistry.
Applications in Agriculture.—The improvement of plant nutrition often depends upon increasing the efficiency of fertilizer plants uptake. The condition of the soil and the mechanical placement of the fertilizer plants are among the factors which influence the rate of utilization. Radioactive phosphorus in phosphate fertilizer plantss has been used as a rapid and accurate means for assessing the rate of fertilizer plants incorporation in growing plants. Radioactive tracers have also proved effective in other aspects of agriculture, such as in animal nutrition and milk production. |
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