Carrot Aphis.

Star (Christchurch), Volume LXVI, Issue 20234, 19 February 1934, Page 9

Carrot Aphis.

OF HOPE and anticipa- "*■ tion of enjoying the succulent vegetable in autumn and winter, we sow our carrot seed in the spring and leave the rest to Nature. But there are many warring factors to be considered, and the results often are disappointing. In the first place, the carrot fly may clean up the seedlings in their infant stages. I have seen half the bed completely taken by these rapacious little black flies. Midsummer is usually very trying to the carrot from the thinning stage onwards, because of the prolific swarms of white and green aphis which infect the foliage, sucking the life juices to the extent of sometimes stopping growth altogether. Against these action must be taken, or the crop may be ruined. Black Leaf 40 is good, but I think dusting Hortnap liberally along the rows under the foliage is even better. The fumes rising upwards kill the aphis very thoroughly—much better than a liquid spray is likely to do. T. D. LENNIE.

A Garden Corner.