AEBI 421 Lecture Notes - Lecture 3: Agricultural Biodiversity, Greenhouse Gas, Seed Dispersal
27 Jan 2016
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Document Summary
Integrated pest management: all options, collected info, lower for direct pest/higher for indirect, models for disease ---- use of biological control, physical barriers. Insecure land tenure, lack of access to natural resources. Life cycle assessment : compilation and evaluation of the inputs, outputs and the potential environmental impacts of a product system throughout its life cycle. Range for most higher plants: 0 40 c. Carbon, oxygen and hydrogen: atmosphere & water. Macronutrients (includes c, o, h: 1000 mg/kg, n, k, ca, mg, p, s. Micronutrients: 100 mg/kg, cl, fe, mn, zn, b, cu, ni, mo. Organic (adds organic matter & nutrients: bulky & expensive, nutrient content varies. Inorganic (can supply specific nutrients: more expensive but cheaper to transport & apply. Bio-fertilizers and/or growth enhancers: beneficial microorganisms and/or substances that enhance proliferation of beneficial soil organisms, increase availability & uptake of mineral nutrients. Plant-animal interactions: mutualism, competition, allelopathy, epiphytism, parasitism, etc, zoochory, herbivory, carnivory, parasitism.
