I seen some 41% roundup generic (roundup is 49-50.2% in ultra) and was wondering if you can use the stuff around trees? and if anyone uses generic products..

Also on side note i was wondering if i ever get that 15-20 gallon atv mounted sprayer if i use a soluable fertalizer then want to use roundup or weed killer in it. what does a body have to do to keep it from getting crossed up? would i need someother kind of chemical rinse?