6. IRRIGATION
Make sure that the soil is at field capacity at planting and then also plan irrigations so that the soil
does not dry out to less than 30 % below field capacity. Irrigation should take place at least once
per week.
7. WEED CONTROL
BEFORE SPRAYING ALWAYS READ THE CHEMICAL LABEL
Grass Weeds
Pre-emergence
To a clean seedbed apply one of the following in 300 l/ha water, tank mix with a broad leaf weed
killer.
active
ingredient
acetochlor
TRADE
NAMES
HARNESS®
alachlor
LASSO®
dimethenamid
FRONTIER OPTIMA®
ufenacet
S-metolachlor
TIARA®
DUAL MAGNUM®
SOIL
CLAY %
0 - 10
11 - 20
21 - 30
31 - 40
41+
0 - 30
31 - 40
41+
0 - 20
21 - 30
31+
0 - 30
0 - 16
17 - 30
31+
ANNUAL
GRASSES
RATE L/HA
0.5
0.8
1.0
1.0
1.5
2.8 - 3.5
3.5 -4.0
3.5 - 4.2
0.9
1.0
1.2
400g
0.9
1.0
1.2
NB ufenacet does suppress Rottboellia cochinchinensis .
Broad leaf weeds
Pre-emergence
With one of the grass killers mentioned above include cyanazine/atrazine mix according to the rates
for the soil clay percentage given below.
active
ingredient
cyanazine/atazine
14
FARMERS GAZETTE
TRADE
NAMES
BLAZINE 5 ®
November 2015
SOIL
CLAY %
10 - 20
21 - 30
31 - 40
41 - 50
51+
B/L WEEDS
RATE l/ha
2.5 - 3.0
3.5
4.0
4.5
5.0