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In this part of the country, winter is a cold, dry season that burns the veld brown.

"The rest they take off the veld," she said.

Their tale of survival has them hopping into their trucks and driving them like hunters on the veld.

Some combination preparations containing African mango, veld grape, East Indian globe thistle and mangosteen showed promising results, but were investigated in three or fewer trials, often with poor research methodology or reporting.

Floods had hit the low veld of Limpopo and Mpumalanga, and winds had blown the roofs of houses and knocked down trees, blocking roads, he said.