{"format":2,"method":"deterministic","version":"185f3c81d6d1","generated_at":"2026-10-27T19:04:01.176271Z","reason":null,"reason_detail":null,"provenance":"verificada_contra_la_fuente","claims":[{"id":"D1","fact_id":"A26","value":90.0,"said_as":"90","text":"Chemical control — Cut stump, active ingredient glyphosate: Effectiveness in season 90–100%; season after treatment 50–70%. Rate for a 3 lb a.e./gal product: 20–25% (0.6–0.75 lb a.e./gal). Cut stem at or below the second joint from the ground; apply herbicide to the cut surface. If cutting between joints, apply 5 mL of herbicide into the hollow stem. Applications can also be injected directly into the stem: inject 2–5 mL (0.002–0.005 lb a.e.) between ground and the top of the second basal node. Apply any time of year when plant is actively growing; spring applications will likely require retreatment. Wait for 3 feet of regrowth before retreating.","period":null,"said_in":[{"scene":0,"second":null},{"scene":13,"second":null}],"owner_scene":0,"backing":"respaldada_en_su_escena","on_screen":"drawn","citation":{"title":"Management of Invasive Plants in Wisconsin: Japanese knotweed (A3924-11)","url":"https://learningstore.extension.wisc.edu/cdn/shop/files/A3924-11.pdf","doi":null,"as_of":null}},{"id":"D2","fact_id":"A26","value":100.0,"said_as":"100 percent","text":"Chemical control — Cut stump, active ingredient glyphosate: Effectiveness in season 90–100%; season after treatment 50–70%. Rate for a 3 lb a.e./gal product: 20–25% (0.6–0.75 lb a.e./gal). Cut stem at or below the second joint from the ground; apply herbicide to the cut surface. If cutting between joints, apply 5 mL of herbicide into the hollow stem. Applications can also be injected directly into the stem: inject 2–5 mL (0.002–0.005 lb a.e.) between ground and the top of the second basal node. Apply any time of year when plant is actively growing; spring applications will likely require retreatment. Wait for 3 feet of regrowth before retreating.","period":null,"said_in":[{"scene":0,"second":null},{"scene":13,"second":null}],"owner_scene":0,"backing":"respaldada_en_su_escena","on_screen":"drawn","citation":{"title":"Management of Invasive Plants in Wisconsin: Japanese knotweed (A3924-11)","url":"https://learningstore.extension.wisc.edu/cdn/shop/files/A3924-11.pdf","doi":null,"as_of":null}},{"id":"D3","fact_id":"A26","value":50.0,"said_as":"50 percent","text":"Chemical control — Cut stump, active ingredient glyphosate: Effectiveness in season 90–100%; season after treatment 50–70%. Rate for a 3 lb a.e./gal product: 20–25% (0.6–0.75 lb a.e./gal). Cut stem at or below the second joint from the ground; apply herbicide to the cut surface. If cutting between joints, apply 5 mL of herbicide into the hollow stem. Applications can also be injected directly into the stem: inject 2–5 mL (0.002–0.005 lb a.e.) between ground and the top of the second basal node. Apply any time of year when plant is actively growing; spring applications will likely require retreatment. Wait for 3 feet of regrowth before retreating.","period":null,"said_in":[{"scene":0,"second":null}],"owner_scene":0,"backing":"respaldada_en_su_escena","on_screen":"drawn","citation":{"title":"Management of Invasive Plants in Wisconsin: Japanese knotweed (A3924-11)","url":"https://learningstore.extension.wisc.edu/cdn/shop/files/A3924-11.pdf","doi":null,"as_of":null}},{"id":"D4","fact_id":"A7","value":65.0,"said_as":"65","text":"Plants arising from seed have a taproot up to 6 feet deep. Stout rhizomes can reach 65 feet or more from parent plants and give rise to new stalks.","period":null,"said_in":[{"scene":1,"second":null}],"owner_scene":1,"backing":"respaldada_en_su_escena","on_screen":"drawn","citation":{"title":"Management of Invasive Plants in Wisconsin: Japanese knotweed (A3924-11)","url":"https://learningstore.extension.wisc.edu/cdn/shop/files/A3924-11.pdf","doi":null,"as_of":null}},{"id":"D5","fact_id":"A9","value":13.0,"said_as":"13","text":"Giant knotweed (P. sachalinense) is also invasive, grows up to 13 feet tall with larger leaves, and the two species are known to hybridize.","period":null,"said_in":[{"scene":3,"second":null}],"owner_scene":3,"backing":"respaldada_en_su_escena","on_screen":"notShown","citation":{"title":"Management of Invasive Plants in Wisconsin: Japanese knotweed (A3924-11)","url":"https://learningstore.extension.wisc.edu/cdn/shop/files/A3924-11.pdf","doi":null,"as_of":null}},{"id":"D6","fact_id":"A14","value":50.0,"said_as":"50 percent","text":"Non-chemical control — Removal: Effectiveness in season < 50%; season after treatment < 50%. Pull at least four times a year. Rhizomes of newly established populations can be removed by digging, but care must be taken to remove all rhizomes and perennial roots since very small amounts can resprout. Not recommended for established populations because of the depth (6-foot taproot) and width (65-foot rhizomes) of the root system. Bag all cut or pulled material and dispose of it in a landfill or burn to avoid potential for root material or above-ground tissue to reroot.","period":null,"said_in":[{"scene":6,"second":null}],"owner_scene":6,"backing":"respaldada_en_su_escena","on_screen":"drawn","citation":{"title":"Management of Invasive Plants in Wisconsin: Japanese knotweed (A3924-11)","url":"https://learningstore.extension.wisc.edu/cdn/shop/files/A3924-11.pdf","doi":null,"as_of":null}},{"id":"D7","fact_id":"A14","value":50.0,"said_as":"50","text":"Non-chemical control — Removal: Effectiveness in season < 50%; season after treatment < 50%. Pull at least four times a year. Rhizomes of newly established populations can be removed by digging, but care must be taken to remove all rhizomes and perennial roots since very small amounts can resprout. Not recommended for established populations because of the depth (6-foot taproot) and width (65-foot rhizomes) of the root system. Bag all cut or pulled material and dispose of it in a landfill or burn to avoid potential for root material or above-ground tissue to reroot.","period":null,"said_in":[{"scene":6,"second":null}],"owner_scene":6,"backing":"respaldada_en_su_escena","on_screen":"drawn","citation":{"title":"Management of Invasive Plants in Wisconsin: Japanese knotweed (A3924-11)","url":"https://learningstore.extension.wisc.edu/cdn/shop/files/A3924-11.pdf","doi":null,"as_of":null}},{"id":"D8","fact_id":"A15","value":70.0,"said_as":"70","text":"Non-chemical control — Mowing/Cutting: Effectiveness in season 50–70%; season after treatment < 50%. Mow or cut at least four times a year, whenever knotweed reaches 2–3 feet in height, and repeat through the fall. Newly established populations can be controlled after three years, but established populations will only be suppressed. Bag or rake and bag cut material and dispose of it in a landfill or burn it.","period":null,"said_in":[{"scene":6,"second":null}],"owner_scene":6,"backing":"respaldada_en_su_escena","on_screen":"notShown","citation":{"title":"Management of Invasive Plants in Wisconsin: Japanese knotweed (A3924-11)","url":"https://learningstore.extension.wisc.edu/cdn/shop/files/A3924-11.pdf","doi":null,"as_of":null}},{"id":"D9","fact_id":"A14","value":4.0,"said_as":"four","text":"Non-chemical control — Removal: Effectiveness in season < 50%; season after treatment < 50%. Pull at least four times a year. Rhizomes of newly established populations can be removed by digging, but care must be taken to remove all rhizomes and perennial roots since very small amounts can resprout. Not recommended for established populations because of the depth (6-foot taproot) and width (65-foot rhizomes) of the root system. Bag all cut or pulled material and dispose of it in a landfill or burn to avoid potential for root material or above-ground tissue to reroot.","period":null,"said_in":[{"scene":7,"second":null}],"owner_scene":7,"backing":"respaldada_en_su_escena","on_screen":"drawn","citation":{"title":"Management of Invasive Plants in Wisconsin: Japanese knotweed (A3924-11)","url":"https://learningstore.extension.wisc.edu/cdn/shop/files/A3924-11.pdf","doi":null,"as_of":null}},{"id":"D10","fact_id":"A14","value":65.0,"said_as":"65","text":"Non-chemical control — Removal: Effectiveness in season < 50%; season after treatment < 50%. Pull at least four times a year. Rhizomes of newly established populations can be removed by digging, but care must be taken to remove all rhizomes and perennial roots since very small amounts can resprout. Not recommended for established populations because of the depth (6-foot taproot) and width (65-foot rhizomes) of the root system. Bag all cut or pulled material and dispose of it in a landfill or burn to avoid potential for root material or above-ground tissue to reroot.","period":null,"said_in":[{"scene":7,"second":null}],"owner_scene":7,"backing":"respaldada_en_su_escena","on_screen":"drawn","citation":{"title":"Management of Invasive Plants in Wisconsin: Japanese knotweed (A3924-11)","url":"https://learningstore.extension.wisc.edu/cdn/shop/files/A3924-11.pdf","doi":null,"as_of":null}},{"id":"D11","fact_id":"A15","value":4.0,"said_as":"four","text":"Non-chemical control — Mowing/Cutting: Effectiveness in season 50–70%; season after treatment < 50%. Mow or cut at least four times a year, whenever knotweed reaches 2–3 feet in height, and repeat through the fall. Newly established populations can be controlled after three years, but established populations will only be suppressed. Bag or rake and bag cut material and dispose of it in a landfill or burn it.","period":null,"said_in":[{"scene":9,"second":null}],"owner_scene":9,"backing":"respaldada_en_su_escena","on_screen":"drawn","citation":{"title":"Management of Invasive Plants in Wisconsin: Japanese knotweed (A3924-11)","url":"https://learningstore.extension.wisc.edu/cdn/shop/files/A3924-11.pdf","doi":null,"as_of":null}},{"id":"D12","fact_id":"A19","value":70.0,"said_as":"70","text":"Chemical control — Pre-emergence, active ingredient tebuthiuron: Effectiveness in season 70–90%; season after treatment 70–90%. Broadcast rate: 10–20 lb/A (2–4 lb a.i./A); spot rate: 1.12 oz/100 ft² (0.02 oz a.i./100 ft²). Apply during late winter or early spring when soil is not frozen, in bands 4–10 feet wide spaced 4–10 feet apart. Not selective; can leave bare ground and can remain in soil for several years. Do not apply more than 20 lb/A (4 lb a.i./A) per year. Do not apply more than once a year. Do not apply directly to water or where surface water is present. May result in groundwater contamination in permeable soils with shallow water table.","period":null,"said_in":[{"scene":11,"second":null}],"owner_scene":11,"backing":"respaldada_en_su_escena","on_screen":"drawn","citation":{"title":"Management of Invasive Plants in Wisconsin: Japanese knotweed (A3924-11)","url":"https://learningstore.extension.wisc.edu/cdn/shop/files/A3924-11.pdf","doi":null,"as_of":null}},{"id":"D13","fact_id":"A19","value":90.0,"said_as":"90 percent","text":"Chemical control — Pre-emergence, active ingredient tebuthiuron: Effectiveness in season 70–90%; season after treatment 70–90%. Broadcast rate: 10–20 lb/A (2–4 lb a.i./A); spot rate: 1.12 oz/100 ft² (0.02 oz a.i./100 ft²). Apply during late winter or early spring when soil is not frozen, in bands 4–10 feet wide spaced 4–10 feet apart. Not selective; can leave bare ground and can remain in soil for several years. Do not apply more than 20 lb/A (4 lb a.i./A) per year. Do not apply more than once a year. Do not apply directly to water or where surface water is present. May result in groundwater contamination in permeable soils with shallow water table.","period":null,"said_in":[{"scene":11,"second":null}],"owner_scene":11,"backing":"respaldada_en_su_escena","on_screen":"drawn","citation":{"title":"Management of Invasive Plants in Wisconsin: Japanese knotweed (A3924-11)","url":"https://learningstore.extension.wisc.edu/cdn/shop/files/A3924-11.pdf","doi":null,"as_of":null}}],"sources":[{"title":"Japanese knotweed","url":"https://learningstore.extension.wisc.edu/cdn/shop/files/A3924-11.pdf","doi":null,"authors":["Brendon Panke","Mark Renz"],"role":"principal","read":true,"claims":["D1","D2","D3","D4","D5","D6","D7","D8","D9","D10","D11","D12","D13"]}],"summary":{"codex":"present","figures_total":13,"backed_in_scene":13,"derived":0,"unbacked":0,"context_only":0,"figures_on_screen":{"drawn":11,"approx":0,"withheld":0,"notShown":2},"plotted_values_approx":0,"plotted_values_withheld":5,"figures_outside_the_cut":0},"doi":null,"certifications":[],"claimsDigest":"b339f14043e4648bf8431ad6dc7112ab562b4f8f5ee26c260c5c42094652e837"}