https://padlet.com/carsbz1/soilscience 'the basic utility for existence of life on earth' en-us 2019-05-01 23:03:07 UTC 2019-05-15 04:13:28 UTC hello@padlet.com https://imgglb.padletcdn.com/v13/image?t=g_auto&url=https%3A%2F%2Fpadlet.net%2Ficons%2Fpng%2F1f47e.png carsbz1 https://padlet.com/carsbz1/soilscience/wish/356003352 Soil is so important because it holds 2/3 of the water on our planet, provides the capability to produce food, and holds more carbon than forest and our earths atmosphere combined. ]]> 2019-05-01 23:10:05 UTC https://padlet.com/carsbz1/soilscience/wish/356003352 carsbz1 https://padlet.com/carsbz1/soilscience/wish/356004554 Soil is technically a non-renewable resource. Soil forms and recovers over thousands of years, meaning it is a resource that must not be exploited. There are many factors that damage soil, some of which are: climate change, air pollution, water pollution, erosion and soil compaction. A statistic to show the history that goes into soil formation: 

it takes 10,000 years to form 30 - 40cm of soil. ]]> 2019-05-01 23:17:54 UTC https://padlet.com/carsbz1/soilscience/wish/356004554 carsbz1 https://padlet.com/carsbz1/soilscience/wish/356006632 Soil is comprised of many different matters, such as: mineral, organic, solid, gas, liquid and living organisms. One teaspoon of soil contains up to 1 billion bacteria (comprised of 4,000 different species).]]> 2019-05-01 23:30:44 UTC https://padlet.com/carsbz1/soilscience/wish/356006632 carsbz1 https://padlet.com/carsbz1/soilscience/wish/360188146 Due to all of the adverse effects of human interference (chemical use in horticulture + agriculture), soil depletion has become a huge problem in New Zealand. NZ soils are missing many beneficial nutrients due to the lack of chemicals, such as: Iodine, Selenium, Zinc, Chromium and Boron.]]> 2019-05-15 03:30:00 UTC https://padlet.com/carsbz1/soilscience/wish/360188146 carsbz1 https://padlet.com/carsbz1/soilscience/wish/360188825 Soil porosity is so important because the pore space in soil stores the necessary oxygen, water, organic matter and microorganisms crucial for plant germination and general soil health. Each time soil is cultivated 10% of the soil structure is destroyed, therefore lessening the pores. It is important to avoid cultivating soil when the conditions have not been suitable ie. very wet from rain or extremely dry from drought. ]]> 2019-05-15 03:33:55 UTC https://padlet.com/carsbz1/soilscience/wish/360188825 carsbz1 https://padlet.com/carsbz1/soilscience/wish/360190808 Soil horizons are the different layers of soil, each with its own characteristics. The layers are classed as 

O = organic matter
A = topsoil
(E) = eluviated
B = subsoil
C = parent material]]> 2019-05-15 03:46:39 UTC https://padlet.com/carsbz1/soilscience/wish/360190808 carsbz1 https://padlet.com/carsbz1/soilscience/wish/360193509 Soil pores are measured by the space between particles of soil. There are two types of pores, which both act differently;

macropores = greater than 30 microns in diameter

micropores = less than 30 microns in diameter 

Macropores allow water to drain, provide space for oxygen and hold microorganisms. This means macropores porosity and stop soil compaction. Micropores, on the other hand, hold water in place, determining the soil's water holding capacity. ]]> 2019-05-15 04:03:38 UTC https://padlet.com/carsbz1/soilscience/wish/360193509