Brown streak can be hard to identify in the field.

在农田中，褐条病难以鉴定。

youdao

In some areas of Uganda, rates of brown streak reached more than eighty-five percent in two thousand five and two thousand eight.

在乌干达的一些地区，2005年到2010年间，褐色条纹病的比率达到百分之八十五以上。

youdao

He says a few varieties of cassava can resist brown streak, but these are not the kinds Africans like.

VOA: special.2010.06.08

In some areas of Uganda, rates of brown streak reached more than eighty-five percent in two thousand five and two thousand eight.

VOA: special.2010.06.08

Brown streak also spreads if farmers sell or give away cuttings of infected plants.

VOA: special.2010.06.08

But field trials have only just begun for mosaic disease and do not start for brown streak until later this year.

ECONOMIST: A crucial crop in new trouble

The win was the ideal tonic for Brown, whose side had conceded 10 goals in their previous two matches and were on a four-game losing streak that had seen them slide to second-bottom in the Premier League.

BBC: Hull 2-1 Wigan