Page 184 Advertisement 1

New Zealand Journal of Agriculture, Volume 94, Issue 2, 15 February 1957, Page 184

Basal Application of Weedicides II Ij , ( I ■Hfil U]grK /' 'i;~ BIB" i® Tv ' :; ' •®S%W .'<:■' EBBBrB' ••'•..-• ‘5 ■. v 4 < I ’S<5;4" <® H " : ’W ! .V ' fc jsjMl Hi lkk. ■ • IK W ”*■ ' Ji SUCCESSFUL , control of barberry, ' , ',"'-., - ** sweet brier, and hawthorn with. ' ' basal applications of 2,4,5-T and diesel ** * ’ fuel was reported in three papers read 'V at the 9th Weed Control Conference \ , t ?il|| in July 1956 at Timaru. A unit ~ ' -‘v® recently assembled and used success- ’ ’ - fully to lay down a large-scale trial ' ; ' ' - |||| consisted of a tractor-mounted, low- >„? • |||| volume sprayer, 60ft. of hose, and a 'if Jill 3-nozzle hand wand (with 37.00 solid cone tips fitted), the ends of the wand • being bent round so that the spray from the tips coned in to the centre of a circle of about 12in. radius. ■ Operating at 501 b. per square inch the wand discharged about 66 gallons per hour and gave a drenching spray that effectively wet the base (that is, the ground and stems to a height of I Sin.) of bushes. Large bushes were sprayed from both sides. The 2-acre plot, with well over 1000 plants per acre, was sprayed in 4-j hours by two men, the second shifting, the tractor as required and keeping the hose up to the spray operator. A total of 96. gallons of a f :70 mixture was used. Such a unit could be used on a field basis to treat local infestations, and with two leads of hose and three operators an acre could be treated in about I? hours. —C. J. CROSBlE,‘Machinery Instructor, Department of Agriculture, Christchurch