The principles of fruit-growing . as the Bor-deaux mixture. Whatever the outfit selected, thepump should be strong and powerful, with hard brassworking parts, and capable of throwing much liquidwith great force. In respect to nozzles, it may besaid that there is no one kind which is best for allpurposes. It is desirable that the liquid should reachthe plant in the form of a very fine mist; but itis just as important that the nozzle should have thepower of throwing the liquid to the desired other words, there are two elements to be con-sidered,— the nozzle must have carrying power andd
The principles of fruit-growing . as the Bor-deaux mixture. Whatever the outfit selected, thepump should be strong and powerful, with hard brassworking parts, and capable of throwing much liquidwith great force. In respect to nozzles, it may besaid that there is no one kind which is best for allpurposes. It is desirable that the liquid should reachthe plant in the form of a very fine mist; but itis just as important that the nozzle should have thepower of throwing the liquid to the desired other words, there are two elements to be con-sidered,— the nozzle must have carrying power anddelivering power. A fine mist at the orifice of thenozzle is of no usewhen the nozzle isthirty feet short of thebug. With many ofthe modern devices, theman who holds the hosein spraying rigs maystand eight or nine feetabove the ground andhe may use a poletwelve to fifteen feet in length, which will elevate his nozzle something liketwenty-five feet from the ground; but many of ourapple trees are fifty and sixty feet high. It will. Fig. 69, Outfit for spraying straw-berries and potatoes. 360 The Princij)les of Fruit-grotvmg. therefore be seen tliat the liquid must carry itselftwenty-five to thirty feet beyond the nozzle. Forsuch purposes, a nozzle which distributes the liquidin a spray directly from its orifice is of small nozzle must be had which throws a more orless solid stream, and the stream should break upwhen it reaches its destination. It will therefore beseen that it is practically impossible to secure asingle nozzle which is best for all purposes. Thegrower should have at least two styles, one forshort range and one for long range. The Cyclonetypes of nozzles are generally best when a veryfine spray is desired for short range (consultFig. 70). Remarks similar to the above may be made forpumps; that is, there is no one best pump. Wemight divide all pumps into two general classes,—those which deliver the liquid by force of gravity, Note. The pictures of spraying
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