Effects on cotton
root rot and nematodes
Farmers in Arizona
and Texas have reported that cotton following sesame has significantly
less cotton root rot (Phymatotrichopsis
omnivora) the following year.
Texas A&M and Auburn University have found that sesame reduces nematode
populations, particularly the root knot nematode that attacks peanuts
Sesame is an
excellent soil builder. Roots
have as much mass as the visible plant.
Stalks disc into soil easily and break down quickly.
Soil is very mellow and requires less work for next crop. Tilth and moisture retention is improved.
across split planted fields can feel how much more mellow the ground
is after sesame.
diagonally across fields with cotton, sesame and sorghum, have been
able to operate one gear higher on the sesame ground.
across pivots have to raise the lister when on sesame ground.
In high erosion
areas, ground after sesame does not blow as much. It appears that the mucilage in the sesame leaves
binds the ground. However, sesame
does not have enough residue to qualify as a high residue crop.
that after sesame, the soil retains moisture better for planting the
In dry years
after sesame, in split planted fields, corn and cotton do not show as
much stress after sesame. The
soil retains moisture better.
have incorporated sesame into their cotton rotation because it:
populations of root knot nematodes.
not susceptible to cotton root rot.
limited water so that farmer can concentrate on water for cotton.
One cotton farmer
who has grown sesame since 1991 has said, "When I start counting
bolls, I can find to the row where the sesame was the previous year. When I defoliate, everyone can see to the row
where the sesame was the previous year."
With early warm
weather or delayed planting date, sesame can volunteer in cotton.
The cotton grade has never been affected and volunteers have
rarely bothered pickers or strippers.
Farmers easily control sesame in Roundup Ready® cotton. Sesame is extremely susceptible to glyphosate.
In most years the sesame will not come through Caparol®.