77- Journal of Agriculture. Victoria. fio Dec, 1912. 



and up to a mile or more in length at Oiiyen, Cow Plains, Ned's 

 Corner, The Raak, Yatpool (near Mildura), Lake Tyrrell, and Towan 

 Plain (near Nyah). Smaller deposits are found throughout the 

 mallee. The supply is enormous, and the quality exceptionally good. 

 Although not quite within the confines of the mallee country, fairly 

 large deposits of the floury form of gypsum are to be found near 

 Natimuk and north of Mount Arapiles on some salt lakes. Large 

 quantities have been excavated and used by the Mildura orchardists 

 and the Melbourne manure manufacturers. Analvses: — 



CaSO^ + 2H2O 



It is also found in beds of large crystals at Boort, Boga, Lake 

 Tyrrell, Cow Plains, &c. These deposits can be loaded on trucks for 

 a nominal sum. 



ORCHARD AND GARDEN NOTES. 



E. E. Pescott, Principal, School of UorUculture, Burnley. 



The Orchard. 



As a preventive against codlin moth, apple and pear trees should 

 be sprayed with arsenate of lead whenever there is danger from the 

 prevalence of the moth. 



By the use of arsenate of lead the codlin moth pest is very easily 

 kept in check, and from being one of the most formidable of orchard 

 troubles, it has come to be one of the least feared of all pests. By 

 constantly spraying with arsenate of lead, the use of bandages as 

 a trap for the codlin larva is now quite unnecessary. In fact, 

 bandages, more often than not, become a harbor and a breeding 

 ground. Further, the time spent in overlooking and attending to 

 the bandages may be employed far more profitably by giving the trees 

 an extra spraying. 



There are a few growers who still make use of lamps at night time 

 to destroy the codlin moth, irrespective of the fact, which has been 

 pointed out again and again, that the codlin moth is not attracted 

 by lamps or lights. These traps do incalculable harm to an orchardist, 

 as they are responsible for the destruction of hundreds of lace-wing 

 flies — insects that are most useful as destroyers of aphides and scales. 



The question of trapping the codlin moth by means of attractive 

 and sticky baits is again being advanced by growers and experi- 

 mentalists. But it will be well to await definite results before this 

 method is adopted to any large extent. Spraying has proved so 

 effective that growers should hesitate before changing their methods 

 for something new. 



One of the secrets of success in codlin moth spraying is the 

 destruction of as many as possible of the insects of the first brood. 



