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Occurrence forecast of corn diseases and pests in H2 2016, China
Aug. 10, 2016
Table 6: Occurrence area and predicted occurrence area of corn diseases and pests in China, H1 and H2 2016, million ha
|
Disease/pest
|
Occurrence area
in H1 2016
|
Predicted
occurrence area
in H2 2016
|
Total
|
|
|
Pest
|
First-generation
corn borers
|
4.4
|
6.8
|
11.2
|
|
Second-generation
corn borers
|
0.20
|
8.0
|
8.2
|
|
|
Third-generation
corn borers
|
0.0
|
5.2
|
5.2
|
|
|
Athetis lepigone
|
0.97
|
0.0
|
0.97
|
|
|
Second-generation
armyworms
|
1.7
|
0.0
|
1.7
|
|
|
Third-generation
armyworms
|
0.0
|
1.3
|
1.3
|
|
|
Aphids
|
0.87
|
5.3
|
6.2
|
|
|
Spider mites
|
0.53
|
1.9
|
2.5
|
|
|
Bollworm
|
0.07
|
3.0
|
3.1
|
|
|
Local locust
|
0.40
|
0.93
|
1.3
|
|
|
Underground pests
|
3.6
|
2.0
|
5.7
|
|
|
Four yellow spotted
leaf beetle
|
0.17
|
2.1
|
2.3
|
|
|
Thrips
|
2.5
|
0.90
|
3.4
|
|
|
Other pests
|
0.37
|
0.97
|
1.3
|
|
|
Subtotal
|
15.8
|
38.6
|
54.4
|
|
|
Disease
|
Northern leaf blight
|
0.43
|
5.7
|
6.2
|
|
Southern leaf blight
|
0.13
|
3.2
|
3.3
|
|
|
Rust
|
0.17
|
3.3
|
3.5
|
|
|
Brown spot
|
0.03
|
2.6
|
2.6
|
|
|
Curvularia lunata
|
0.0
|
2.2
|
2.2
|
|
|
Sheath blight
|
0.50
|
1.5
|
2.0
|
|
|
Smut
|
0.07
|
1.0
|
1.1
|
|
|
Head smut
|
0.03
|
0.90
|
0.93
|
|
|
Stem rot
|
0.03
|
0.60
|
0.63
|
|
|
Rough dwarf
|
0.27
|
0.10
|
0.37
|
|
|
Other diseases
|
0.37
|
0.97
|
1.3
|
|
|
Subtotal
|
2.0
|
22.1
|
24.1
|
|
Source: Think Real
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