Selective spray

Another interesting case is that of a manufacturer who recommended use of 2,4-D weed killer as a selective spray for control of weeds in young carrots. He had previously... 

Refined oils of the Stoddard solvent type, safe and effective for handling carrot crops, were developed after a relatively short period of research. Their use spread to celery, parsnips, parsley, and anise. Foresters, finding that conifer seedlings were tolerant to the refined oils, sprayed forest tree nurseries. Research proved that a somewhat less toxic oil could be used on flax and onions. The use of refined selective spray oils found a definite place in the agriculture of our country. 

Development and Planning Weapons design, development, and comparison of weapons effects Design develop and select spray delivery systems... 

Select sprays, trays versus packing on efficiency. 

Paper and thin layer chromatography have been used since decades for flavonoid analysis. As anthocyanins are colored substances, separation can be directly monitored and may serve as a quick, qualitative test for the anthocyanin distribution in a given sample. Classical paper chromatography involves two-dimensional development followed by treatment with selective spraying reagents or exposure to ammonia vapor and allocation of spots in visible or UV-light [90]. 

Bracken This weed is a very serious problem which is increasing, especially in hill areas. The fronds (leaves) should be cut or crushed twice a year when they are almost fully open. If possible, the field should be ploughed deep and then cropped with potatoes, rape or kde before reseeding. Rotavating to about 25 cm deep chops up and destroys the rhizomes. Glyphosate can be used as a non-selective spray before reseeding or, selectively, with a rope-wick machine. 

Selective Spray Immersion Solvent Extraction Solvent Atmospheric Plasma Low Pressure (Vacuum) Plasma UV-Ozone Treatment Microabrasive Snow... 

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