7. barked--BOCHART, with the Septuagint and Syriac, translates, from an Arabic root, "hath broken," namely, the topmost shoots, which locusts most feed on. CALVIN supports English Version.
      my vine . . . my fig tree--being in "My land," that is, Jehovah's (Joe 1:6). As to the vine-abounding nature of ancient Palestine, see Nu 13:23, 24.
      cast it away--down to the ground.
      branches . . . white--both from the bark being stripped off (Ge 30:37), and from the branches drying up through the trunk, both bark and wood being eaten up below by the locusts.

JFB.