Necrotic, brown foliage and sparse canopy on a landscape olive tree sprayed with naphthaleneacetic acid (NAA) plant growth regulator (PGR) during flowering to prevent nuisance fruit drop.
Necrotic, brown foliage and sparse canopy on a landscape olive tree sprayed with naphthaleneacetic acid (NAA) plant growth regulator (PGR) during flowering to prevent nuisance fruit drop. Credit: J. Michael Henry, UCCE Riverside-Orange
