Sesame (Sesamum indicum L.) tolerance with various postemergence herbicides

Seed Germination and Morphological Behavior of Maize (NAC-6002, NAC-6004 and NAH- 2049) Seedlings under Abiotic Stress (Alachlor) Condition

“…There was a significant reduction of both plumule and radicle length, when seeds were treated with different concentrations of herbicide. Similarly, miserable plumule and radicle length of few crops by a few herbicides were reported by (Beuerlein, 1990, Grichar et al, 2001, Lyon and Wilson 2005and Soltani et al, 2008. Our results also draw a parallel with the earlier results of (kumar and Jagannath, 2013, Nethra and Jagannath, 2011and Rajashekar et al, 2012 who reported the toxicity of butachlor, oxadiargyl and pendimethalin on wheat, corn and maize respectively.…”

Weed Control and the Use of Herbicides in Sesame Production

“…Fluchloralin and metobromuron are not available in the U.S. Glyphosate is often applied with the preemergence herbicide to control emerged weeds. Herbicides act differently under certain environmental conditions which include variability in soil texture, organic matter, temperature, pH, humidity, rainfall timing and intensity, and under different methods and timing of application (Grichar et al, 2001a;2001b). Pendimethalin and trifluralin are particularly difficult to use with results ranging from exceptional weed control with no damage to the sesame to little or no sesame stand .…”

“…Various studies have shown that the yields are comparable between the untreated check and herbicide treatments that have some stand reduction (unpublished data). Until 2000, little or no research has been done on the use of postemergence herbicides in sesame (Grichar et al, 2001b). Most of the herbicide work has been at crop establishment.…”

“…Grass herbicides, fluazifop-P-butyl, haloxyfop, and sethoxydim have been used successfully in many parts of the world. More recently, clethodim has proven equally good controlling both annual and perennial grasses (particularly johnsongrass) and not damaging sesame (Grichar et al, 2001b). There is a label in the U.S. for clethodim (Select Max ® ) use in sesame which allows spraying in all phases except flowering .…”

“…The cleaning and removal of any glyphosate residues in spray tanks after each herbicide use is essential to prevent herbicide carryover. To date there is no postemergence over-the-top broadleaf herbicide that will control the weeds without damaging the sesame (Grichar et al, 2001b). There are products such as alachlor and metolachlor that cause minimum injury to sesame when applied postemergence, will not control emerged weeds, but will provide some soil residual activity (Grichar et al, 2001a;Grichar et al, 2009).…”