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INTREGRATED PEST MANAGEMENT (IPM)
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Seeds
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General Information
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Crop Disease Detail
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SEED CERTIFICATION IN ONION
SEED CERTIFICATION IN ONION (Allium cepa L.)
I. Application and Amplification of General Seed Certification Standards The General Seed Certification Standards are basic, and together with the following specific standards constitute the standards for certification of onion seeds.
II. Land Requirements Land to be used for seed production of knoll-kohl shall be free of volunteer plants.
III. Field inspection
A. Mother bulb production stage
A minimum of two inspections shall be made as follows:
1. The first inspection shall be after transplanting of seedling to determine isolation, volunteer plants, off types including bolters and other relevant factors.
2. The second inspection shall be made after the bulbs have been lifted to verify the true characteristics of bulbs.
B. Seed production stage
A minimum of four inspections shall be made as follows:
1. The first inspection shall be made before flowering in order to determine isolation, volunteer plants, off types including bolters and other relevant factors.
2. The second and third inspections shall be made during flowering to check isolation, off types and other relevant factors.
3. The fourth inspection shall be made at maturity to verify the true nature of plant and other relevant factors.
IV. Field Standards
|
Contaminants |
Maximum Distance (Meters) |
|||
|
Mother bulb production stage |
Seed production stage |
|||
|
Foundation |
Certified |
Foundation |
Certified |
|
|
1 |
2 |
3 |
4 |
5 |
|
Fields of other varieties |
5 |
5 |
1000 |
500 |
|
Fields of the same variety not conforming to varietal purity requirements for certification |
5 |
5 |
1000 |
500 |
B. Specific Requirements
|
Factor |
Maximum Permitted (%)* |
|
|
Foundation |
Certified |
|
|
*Bulbs not conforming to the varietal characteristics |
0.10% |
0.20% |
|
**Off types |
0.10% |
0.20% |
*Maximum permitted at second inspection at mother bulb production stage.
**Maximum permitted at and after flowering at seed production stage.
|
Factor |
Standard for each class |
|
|
Foundation |
Certified |
|
|
1 |
2 |
3 |
|
Pure seed (minimum) |
98.0% |
98.0% |
|
Inert matter (maximum) |
2.0% |
2.0% |
|
Other crop seeds (maximum) |
5/kg |
10/kg |
|
Weed seeds (maximum) |
5/kg |
10/kg |
|
Germination (minimum) |
70% |
70% |
|
Moisture (maximum) |
8.0% |
8.0% |
|
For vapour-proof containers (maximum) |
6.0% |
6.0% |