Msika wamankhwala ophera udzu wakwera kwambiri posachedwa, pomwe kufunikira kwaukadaulo wa herbicide glyphosate kukwera kwambiri. Kuwonjezeka kwa kufunikira kumeneku kwadzetsa kutsika kwamitengo, zomwe zimapangitsa kuti mankhwala azitsamba azitha kupezeka m'misika yosiyanasiyana ku Southeast Asia, Africa, ndi Mi...
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