Add 4 independent seed brands: Latham + Stine + 1st Choice + Burrus (+623 varieties) (#17)

Co-authored-by: claude <[email protected]>
Co-committed-by: claude <[email protected]>

corpus/latham/latham-lh-3867-vt2-pro-rib.json

@@ -0,0 +1,139 @@
+{
+  "source": "latham",
+  "source_key": "latham-lh-3867-vt2-pro-rib",
+  "vendor": "Latham Hi-Tech Seeds",
+  "brand": "Latham Hi-Tech Seeds",
+  "product_name": "LH 3867 VT2 PRO RIB",
+  "product_id": "LH 3867 VT2 PRO RIB",
+  "crop": "corn",
+  "release_year": "2023",
+  "relative_maturity": 88,
+  "maturity_group": null,
+  "wheat_class": null,
+  "trait_stack": [
+    "VT2 PRO RIB"
+  ],
+  "trait_descriptions": [],
+  "positioning_statement": "Early planting capability with strong emergence and vigor characteristics make LH 3867 VT2 PRO RIB a top choice when kept in and south of its maturity zone. This hybrid has strong flex but also responds to higher populations on higher productivity soils. Wonderful disease scores plus very good stalks and roots make this a top choice for many hybrid packages.",
+  "strengths": [],
+  "characteristics_groups": [
+    {
+      "label": "AGRONOMIC CHARACTERISTICS",
+      "items": [
+        {
+          "characteristic": "Flowering for Maturity",
+          "value": "Moderately Late"
+        },
+        {
+          "characteristic": "Early Vigor",
+          "value": "1.5"
+        },
+        {
+          "characteristic": "Stalk Strength",
+          "value": "2.0"
+        },
+        {
+          "characteristic": "Root Strength",
+          "value": "1.5"
+        },
+        {
+          "characteristic": "Stay Green",
+          "value": "2.0"
+        },
+        {
+          "characteristic": "Drydown",
+          "value": "2.0"
+        },
+        {
+          "characteristic": "Test Weight",
+          "value": "1.5"
+        },
+        {
+          "characteristic": "Drought Tolerance",
+          "value": "1.5"
+        },
+        {
+          "characteristic": "Foliar Fungicide",
+          "value": "1.5"
+        },
+        {
+          "characteristic": "Herbicide Sensitivity",
+          "value": "None Known"
+        },
+        {
+          "characteristic": "Suggested Population",
+          "value": "30-36"
+        },
+        {
+          "characteristic": "Corn-on-Corn",
+          "value": "1.0"
+        },
+        {
+          "characteristic": "Ear Height",
+          "value": "Medium"
+        },
+        {
+          "characteristic": "Ear Type",
+          "value": "Flex"
+        },
+        {
+          "characteristic": "Number of Kernel Rows",
+          "value": "16-18"
+        },
+        {
+          "characteristic": "Cob Color",
+          "value": "Red"
+        },
+        {
+          "characteristic": "Husk Cover",
+          "value": "Medium"
+        },
+        {
+          "characteristic": "Shank Length",
+          "value": "Medium"
+        },
+        {
+          "characteristic": "Leaf Angle",
+          "value": "Semi-Upright"
+        }
+      ]
+    },
+    {
+      "label": "DISEASE RATINGS",
+      "items": [
+        {
+          "characteristic": "Goss’s Wilt",
+          "value": "2.5"
+        },
+        {
+          "characteristic": "Northern Leaf Blight",
+          "value": "1.5"
+        },
+        {
+          "characteristic": "Anthracnose Stalk Rot",
+          "value": "2.0"
+        },
+        {
+          "characteristic": "Gray Leaf Spot",
+          "value": "2.0"
+        }
+      ]
+    }
+  ],
+  "_scale_direction": "numeric ratings ~1-9 where LOWER = BETTER (1 = best / most tolerant / most resistant); confirmed by cross-referencing Product Overview prose vs values (top-rated stalks/roots cluster 1.0-1.5, weak traits 3.0-3.5, none approach 9). Categorical values pass through verbatim (SCN source 'PI 88788', Phytophthora 'Rps 1k', Anthracnose 'ASR', 'Medium Tall', 'Flex'). NA/blank = not rated.",
+  "regional_recommendations": [
+    {
+      "product_list_name": "Latham dealer network (Upper Midwest — IA/MN/WI/IL/ND/SD/NE)",
+      "agronomist": null,
+      "agronomist_email": null,
+      "variant_id": null
+    }
+  ],
+  "image_url": null,
+  "source_urls": [
+    "https://www.lathamseeds.com/products/lh-3867-vt2-pro-rib/"
+  ],
+  "sitemap_last_modified": null,
+  "fetched_at": "2026-06-05T01:46:34.951869+00:00",
+  "scraper_version": "0.1.0"
+}