527 



campesfris was killed. (8) The spraying is effective against aphids 

 even when they are not directly wetted by it. Shortly after the 

 application, lice which were hidden, emerged and evidently suffered 

 from the odour of the nicotine. 



The cost of the operations was as follows :• — 44 lb. nicotine extract, 

 19s. 5d. ; 4 days' wages, 5s. 3d. — total, 24s. 8d. The cost of three 

 sprayings of 1 acre thus amounted to £3 14s. Od. The increased yield 

 of the sprayed area was in the case of seed turnips about 5| cwt. per 

 acre, the net profit being about £4 per acre. When the attack spreads 

 gradually from the border of a field, much can be achieved by daily 

 cutting off and destroying the attacked shoots, and it is always 

 worth while trying this method before the more costly spraying is 

 undertaken. 



QuiNN (G.). Report of the Horticultural Instructor. — Rept. of the 

 Minister of Agriculture of South Australia for the year ended June 

 30th, 1914, Adelaide, 1915, pp. 24-34. [Received 10th July 1915.] 



The examination of fruits, plants and seeds imported into and 

 exported from the State was continued. No serious invasions of new 

 pests were reported. Of the Fiji bananas, 2,820 bushels were fumigated 

 on account of scale. Experiments with a liquid bait called " Frenler " 

 against the codling moth gave negative results. Considerable cime 

 was devoted to the inspection of citrus plantations on the plains of 

 Adelaide for the detection of Aspidiotus aurantii (red scale). Results 

 showed that the scale was being controlled and that fruit free from its 

 presence was the rule rather than the exception. Blastophaga 

 grossoruni (fig wasp) was established in one orchard containing 

 a Capri Fig Tree, Roedings No. 3 ; the latter carried two 

 summer broods and a large number of winter fruits contained 

 the insect. Lepidosaphes ulmi {Mytilaspis pomorum), apple mussel 

 scale, a pest very prevalent in Mount Gambier, appeared at 

 Penola. Otiorrhynchus cribricollis was fairly abundant ; the method 

 of placing oil traps round the stems of infested trees gave good 

 results. Mount Gambier potato crops were affected by the cater- 

 pillars of Phthorimaea operculella {Lita solanella). In plots sprayed 

 against Irish blight it was noticeable that the moth affected the tops 

 of plants sprayed with bluestone mixture much less severely than 

 unsprayed plants. In the district south of Adelaide, codUng moth 

 was destructive to late apples. Red spider was troublesome in some 

 districts. Considerable damage was occasioned by the green peach 

 aphis {Rhopalosiphum dianthi) in the Barossa district ; the blossoms 

 and young fruit were attacked. The apple tree root borer (Leptops) 

 was recorded in the Wirrabara district ; the best control methods 

 were spraying the foliage with lead arsenate, trapping the beetles by 

 means of zinc bands round the trunks of affected trees, and gathering 

 them after shaking them to the ground. During the summer Eriocam- 

 poides limacina {Selandria cerasi), pear and cherry slug, appeared over 

 a considerable area near Angaston. The favourite food was the foliage 

 of some varieties of pear ; cherry and hawthorn were also attacked. 



