PLNT 1213 Lecture Notes - Lecture 23: Perennial Plant, Fiber Crop, Gossypium Barbadense
Document Summary
Central and south america: most modern cultivars developed from these species. Wild cotton is a perennial plant: cultivated as a summer annual. First recorded planting in florida: 1556. About 200,000 acres in ok: ranks 12th in us. Growth stages: germination and emergence, seedling establishment, leaf area and canopy development, flowering and boll development, maturation. Gdds for cotton = base temperature 60 f. Cotton boles: when have black layer and the casing layer has split, it is mature. Only has to break open and then can be harvested. Uses: most important fiber crop in the world, also used for food (oil) and feed (meal, long fibers- sheets, etc, short fibers- towels, strong fibers- denim, very short fibers- paper. Planting: march june, 3 4 seeds per foot, . 25 1. 5 inches deep, major issues include diseases and crusting. Weeds: summer annual broadleaf weeds, post-directed or hooded herbicide applications unique to cotton, herbicide resistant varieties. Tried to eradicate oklahoma is completely eradicated.
