QuestionsQuestions (DA ADMINISTRATIVE ORDER NO. 29, S. 2001, OCTOBER 25, 2001)
To assure that high-quality planting materials of superior varieties—with known genetic identity and varietal purity, including freedom from known systemic pests and diseases—are produced.
Only accredited seed potato growers are eligible to apply for certification.
Only varieties duly approved and registered by the NSIC (National Seed Industry Council) are eligible for certification.
The National Seed Quality Control Services (NSQCS) under the Bureau of Plant Industry, Department of Agriculture.
The vegetatively propagated tuber used for reproduction of potato, not the true seed produced from potato flowers.
Go: tubers harvested from greenhouse production directly controlled by the originating/sponsoring institution. F1: progeny of Go harvested from seed multiplication field, handled to maintain genetic purity and disease-free plants. C1: progeny of F1 harvested from seed production area and certified by NSQCS to maintain genetic purity and identity. CII: progeny of Certified I or earlier. CIII: progeny of Certified II or earlier.
Roguling means the removal and destruction of diseased or undesirable plants/tubers produced thereon.
At least 0.5 hectare.
The field must be free from potato cyst nematode (PCN) or root knot nematode (RKN) and have a maximum of 10 cfu bacterial wilt organism per seed lot (with soil analysis certificates attached); rotated preferably with corn or other cereal/non-solanaceous vegetables for at least two cropping seasons; accessible to seed storage facilities; and located at appropriate elevation (at least 900 masl in Mindanao and 1800 masl in CAR).
Basic-to-foundation: 2 meters; Foundation to Certified Seed (C1): 20 meters; Certified Seed (CII)-Certified Seed (CIII): 50 meters.
At least three times during the crop season. Schedule: (1) within 20–30 days after planting; (2) within 40–50 days after planting; (3) within 60–75 days after planting.
Continuous roguing by the farmer as early as disease symptoms appear until vines close on the rows to remove and destroy all diseased plants and off-types.
To determine the presence of Potato Cyst Nematode (PCN) and/or root knot nematode (RKN) in stunted plants through random fork testing.
No. A seed grower shall plant only one potato variety for seed purposes on the same field at any one time.
Imported seed potatoes must be accompanied by proper quarantine documents and are subject to post-entry quarantine.
The label must include: grower, variety, origin/place, seed class planted, date of planting, and area (ha.).
Seed size for certified seed potatoes should be 25–55 mm. Post-harvest tolerance (per 100 tubers): dry/wet rot maximum 1%; external damages (cuts/bruises/insect damage/malformed tubers) maximum 5%; scab (no more than 20% of tuber surface) maximum 5%; black scurf Rhizoctonia solani (no more than 20% of tuber surface) maximum 5%.
All seed stocks that passed certification shall be officially tagged on the bag/crate. Colors: Basic (Go) = White; Foundation (F1) = Red; Certified II (CII) = Blue; Certified III (CIII) = Yellow.