PLANT DISEASES
THE BIOLOGISTS REPORT. In his last annual report to the Minister of Agriculture, the Govern--1 ment Biologist says :—Nearly 1,200 specimens of plant-diseases were dealt with. Several diseases the cause of which is at present unknown are at present under investigation. The season 1911—1912, although a wet one, was not particularly favourable for fungus-development. Irish blight was fairly general, but it did not appear until late in the seaaon, and the damage caused is less than it would have been expected. Tho wheat black-mould (Cladosporium herbamum) did a good deal of damage to wheat in the south. This is a fungus that develops imoro particularly in seasons like the past one. In normal years its effects can be almost totally disregarded. There were also complaints regarding wheat-mildew (Erysiphe graminis), hut in New Zealand it appears to be a very much less serious disease than it is in Europe. Grass-rust (Puecinia graminis) was extremely prevalent on young ryegrass, more so, in fact, than I have ever before noticed.
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Wairarapa Age, Volume XXXI, Issue 10713, 14 December 1912, Page 5
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169PLANT DISEASES Wairarapa Age, Volume XXXI, Issue 10713, 14 December 1912, Page 5
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