My father wanted to get a good kill on the grass in our apple orchard, so he mixed 1 gallon of dieself fuel with the usual amount of RoundUp. Now our apples are turning a bright red and dropping, even those we didn’t use a thinning spray on. It this the result of the diesel fuel? If so, how long of an effect will the diesel fuel have on the trees? What about our crop next year? Will the apples that survive be unedible?