No weed and feed safe for use near fruit trees that I have heard of. Your safest bet is to spot spray the weeds with a mix of 1/2 cup white vinegar to a gallon of water, and let the lawn grass fill in the dead spots later.

The yellow flower is most probably lesser trefoil. I would suggest spot spraying them with a weedkiller that does not kill the grass. Scotts and bayer both make one available from most garden centres. To keep the weedkiller from drifting onto your fruit trees may i suggest using a large empty milk container, cutting off the bottom, place over weed and spray as directed by herbicide instructions. lesser trefoil usually takes two applications to erradicate.

Also, when using selective, systemic weed killers around edible plants, use a wetting agent--for greater coverage--and be careful to apply just enough to moisten the leaves of the weeds, without runoff. Most of these weed killers are supposed to be inactivated by the soil, but it isn't always so. Too much residue in the soil could make the fruit slightly toxic, and/or damage the trees.