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Lecture 5

GGR287 W5 Lec.doc

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Department
Geography
Course
GGR287H5
Professor
Pierre Desrochers
Semester
Fall

Description
GGR287 W5 Lecture - Rice Basic Facts • work wide > 40,000 varieties Oryza sativa • African rice (Oryza glaberrima) • mostly for human consumption African Rice (vs Asian Rice) Cons • shattering • brittle grain • poor milling quality • lower yields Pros • more tolerance • fluctuations in water depth • iron toxicity • infertile soils • severe climatic conditions • human neglect • better resistance to various pests & diseases Nerica = new rice for Africa (Hybrid African-Asian) Rice Harvest (Madagascar) • Flooding not mandatory, but best control method for weeds & pests • better for soil nutrients • higher yields • better quality Pulse Crops • Broad Definition: Annual leguminous crop yielding from one to twelve seeds of variable size, shape, and colour within a pod (peas, beans, lentils, chickpeas, fava beans
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