IDSB02H3 Lecture Notes - Lecture 3: Nematode, Sustainable Agriculture, Soil Management
21 Apr 2016
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Document Summary
Environmental factor: deforestation lead to the end of this civilization. Soil mismanagement was one of the main triggers of their decline. Slash and burn: entailed soil management, burning/ removing vegetation to improve soil. Wave 1: movement of population, soils that were highly susceptible to soil erosion. Wave 2: development of the plough, changing vegetative landscape. Wave 3: conversion of tropical land into farmland. Amazon forest: consequences: soil erosions and ve affect on soil fertility. Erosion and terracing: managing and preventing soil erosion. Taking land out of producing things (leaving them fallow) allows for soil to replenish nutrients. Legumes (nitrogen fixing plants: take n2 from air to soil, ex. soy beans, growing coffee plants close to nitrogen fixing plants reduces the amount of fertilizers that you have to add. Formed the basis of classifying info on soils. We are able to look through the history of soils to classifying, diagnose, or look @ particular sections of soil.
