• 1968 suggestions for spraying commercial apple orchards 

    Tweedy, B. G.; Goodman, B. N.; Enns, W. R.; Craig, W. S.; Swartwout, H. G.; Gaus, A. E. (University of Missouri--Columbia. Extension Division, 1968)
    Dormant Spray -- Pre-bloom Sprays -- Blossom Sprays -- Petal-fall Spray -- First Cover Spray -- Fruit Thinning Sprays -- Second Cover Spray -- Second Cover Spray (Continued) -- Transition Period Sprays -- Mid-season Sprays ...