TOLERANCE OF LENTIL (Lens culinaris Medik.) TO HERBICIDES

Abstract

Lentil (Lens culinaris Medik.) was tolerant to trifluralin, ethalfluralin, triallate, metolachlor and metribuzin applied preplant soil incorporated at rates of 1.1, 1.1, 1.7, 2.6 and 0.28 kg (a.i.)/ha, respectively. Chloramben and EPTC applied in a similar manner at rates of 2.0 and 3.0 kg (a.i.)/ha, respectively, injured lentils. Diclofop methyl, sethoxydim, fluazifop butyl, haloxyfop methyl and several experimental grass-specific herbicides were tolerated by lentil but propanil and flam-prop methyl were phytotoxic to this crop. Lentil was also tolerant to tank mixtures of trifluralin and triallate, trifluralin and metribuzin, metolachlor and metribuzin, and sequential treatments of dinitroaniline-type herbicides applied preplant incorporated followed by a post-emergence application of metribuzin or dinoseb. Lentil seed density was reduced by triallate in 1983 and seed size was reduced by flamprop methyl in 1982 and by trifluralin, triallate, metolachlor, EPTC, chloramben, metribuzin and trifluralin + metribuzin mixtures in 1983.Key words: Herbicides, lentil, preplant incorporated, postemergence, seed quality, sequential treatments