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Topic: Soil life

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Soil science

Soil

Soil pH

Pedology (soil study)

Soil profile

Soil structure

Nitrogen cycle

Nitrogen fixation

Topsoil

Earthworm

Nitrification

List of organic gardening and farming topics

Bacterium

Bacteria

Organic farming

	Soil life
		Soil life is a collective term for all the organisms living within the soil.
		The mineral content of the soil and its physical structure are important for their well-being, but it is the life in the earth that powers its cycles and provides its fertility.
		In terms of soil and humus creation, the most important fungi tend to be saprophytic[?], that is, they live on dead or decaying organic matter, thus breaking it down and converting it to forms which are available to the higher plants.
	www.ebroadcast.com.au /lookup/encyclopedia/so/Soil_life.html (1132 words)

	Soil (Site not responding. Last check: 2007-11-02)
		Soil forms the upper-most layer of the earth's crust and is made up of inorganic and organic matter.
		Clay soils have a large proportion of the smallest particles and are the least suitable for plant growth.
		Soils which have approximately equal proportions of sand and clay are called loams and are best for plant growth because they contain enough air and can hold moisture.
	www.botany.uwc.ac.za /Envfacts/facts/soil.htm (789 words)

	Soil life - Wikipedia, the free encyclopedia
		Soil life or soil biota is a collective term for all the organisms living within the soil.
		Without the activities of soil organisms, organic materials would accumulate and litter the soil surface, and there would be no food for plants.
		Aerobic bacteria are most active in a soil that is moist (but not saturated, as this will deprive aerobic bacteria of the air that they require), and neutral soil pH, and where there is plenty of food (carbohydrates and micronutrients from organic matter) available.
	en.wikipedia.org /wiki/Soil_life (1180 words)

	Soil Management - Soil Life (Site not responding. Last check: 2007-11-02)
		Saturated soils have a weak structure and are prone to compaction.
		Spring soil is highly susceptible to wind and water erosion, because soil is often bare and soil structure is weak.
		Soil water levels begin to recharge as temperatures drop and evaporation and transpiration slow.
	www.extension.umn.edu /distribution/cropsystems/components/7399_03.html (953 words)

	Scenic Hills Nursery -- Oak Wilt Specialists in the Texas Hill Country
		Soil is one of the building blocks of life and is crucial for the growth of the food chain.
		This system is referred to as "soil life", as the microbes are living organism in the soil, that make all nutrients exchangeable to plants.
		Understanding the function of microbes in the soil is essential, as it is these very same bacteria and microbes that create the exchange conditions of minerals and nutrients for plants and trees.
	www.800oakwilt.com /biogreen/soillife.html (1051 words)

	PETRIK Approach to Crop Management (Site not responding. Last check: 2007-11-02)
		Soil moves continually in a natural cycle aided by oxygen, water, minerals and decomposing animal and plant matter.
		Soil plasma is the liquid portion of the soil.
		Soil plasma is that substance in the soil that can spin catabolized remnants of former life into vital threads that are woven together into the fabric of new life through the processes of anabolism.
	www.petrik.com /PUBLIC/library/ups.html (2757 words)

	Lesson 7. Soil Biological Properties
		Microscopic life forms in the soil are generally called the "soil microflora" (though strictly speaking, not all are plants in the true sense of the word) and the larger animals are called macrofauna.
		Soil animals, especially, the earthworms and some insects tend to affect the soil favorably through their burrowing and feeding activities which tend to improve aeration and drainage through structural modifications of the soil solum.
		Soil bacteria belonging to the genera Rhizobium and Bradyrhizobium (and a few others) are capable of inducing the formation of nodules on roots of specific legumes (plants like peas, beans, peanuts, soybeans, alfalfa etc.) and fixing large quantities of nitrogen in these structures.
	organiclifestyles.tamu.edu /soilbasics/soilbiological.html (2709 words)

	KRASILNIKOV: INTRODUCTION
		According to him, soil should be called the "daily" or outward horizons of rocks regardless of the type; they are changed naturally by the common effect of water, air and various kinds of living and dead organisms.
		According to him,the notion of soil and its fertility are inseparable.
		The degree of soil fertility is determined by the intensity of the life processes of the microbial population.
	www.soilandhealth.org /01aglibrary/010112Krasil/010112krasil.intro.html (2492 words)

	Natural Soil Bacteria, soil life
		Soil biology is as critical to soil health as natural microbes are to human health.
		Soil is naturally made up of inorganic substances such as minerals and other materials, and should contain not only bacteria, but organic plant material worked back into the soil to help feed the bacteria and provide more nutrients for plant growth.
		Soil Life adds these microbes, in a heightened state of activity, thereby providing optimum growing conditions for yard, garden or farm.
	www.purehealthsystems.com /soil-life-probiotics.html (987 words)

	What Makes Soil Tick
		The processes that take place within the soil are, for the most part, dependent first upon the activities of living organisms; and hence, the existence of higher plants depends on the activities of the soil microbes.
		As organic matter returned to the soil is digested by microbes the resulting cellular material is mixed with the living and dead bodies of bacteria, fungi, actinomycetes and other microscopic forms of life, together with certain excretory materials produced during their life cycles to form a dynamic, everchanging, organic material called HUMUS.
		Multiply this by the number of spoonfuls of soil in an acre and you have figures that are astronomical.
	www.life-enthusiast.com /miracle/bio_soil_micro.htm (1311 words)

	Gardening New Zealand - GYPSUM® SOIL LIFE (Site not responding. Last check: 2007-11-02)
		SOIL LIFE REDUCES SOIL EROSION Gypsum Soil Life significantly reduces soil erosion and runoff on cultivated soils by maintaining larger aggregates in the soil structure.
		The result is soil pH is lowered; soil aggregation improves and a crumbly, friable soil structure is restored, improving most vegetable and orchard crops.
		Where soils are low in sulphur, Gypsum Soil Life is a useful means of supplying S (sulphur).
	www.garden-nz.co.nz /article/articleview/192/1/405 (861 words)

	Soils for Salmon \| Why build healthy Soil?
		The billions of organisms in the soil are fueled by soil organic matter.
		Soil Biology Primer (on USDA Natural Resources Conservation Service website) illustrates how the soil ecosystem creates these essential functions, in agriculture, forest, and urban landscapes.
		Soil restoration is the foundation of the Low Impact Development (LID) practices being adopted around Puget Sound to cost-effectively manage stormwater and restore the health of our waterways.
	www.soilsforsalmon.org /why.htm (752 words)

	Soil Ecology
		Soil in its natural state is a living environment, teeming with biological activity functioning in a complex ecosystem.
		The types of life found in the soil are many, and the numbers of organisms are enormous.
		Soil organisms can be classified according to the method in which they obtain energy and carbon.
	cropsoil.psu.edu /courses/soils101/labs/ecology.html (1373 words)

	Hydric soil - Wikipedia, the free encyclopedia
		A hydric soil is a soil that formed under conditions of saturation, flooding, or ponding long enough during the growing season to develop anaerobic conditions in the upper part.
		Soils with these unique properties are called hydric soils, and although they may occupy a relatively small portion of the landscape, they maintain important functions in the environment.
		First, a soil that is artificially drained or protected (ditches, levees, etc.) is a hydric soil if the soil in its undisturbed state meets the definition of a hydric soil.
	en.wikipedia.org /wiki/Hydric_soil (433 words)

	Soil Science at UW-Madison (Site not responding. Last check: 2007-11-02)
		Soil science is the study of the physical, chemical and biological properties of soils.
		Soil Science allows us to optimize use and preservation of land for agriculture, forestry, recreation, transportation systems, urban development and many other endeavors.
		Founded in 1897, this department is the oldest active department of soil science in the United States, and counts many distinguished soil scientists and environmental scientists among its alumni.
	www.soils.wisc.edu (176 words)

	Soil Life (Site not responding. Last check: 2007-11-02)
		As soil life forms move through the soil they create channels that improve aeration and drainage.
		When the soil is tilled and left bare, soil life can be injured by high temperatures.
		To promote soil organisms; incorporate organic matter, till as little as possible, minimize soil compaction, maintain favorable soil pH and fertility, and use an organic mulch on the soil surface.
	www.ces.ncsu.edu /depts/hort/consumer/quickref/soil/soillife.html (232 words)

	Life In The Soil (Site not responding. Last check: 2007-11-02)
		Soils are a critical and dynamic center for the majority of ecosystem processes in both natural and managed ecosystems.
		Soils are the major global storage reservoir for carbon in the form of organic matter (estimates of about 1500 X 10x15 gC are stored in soils).
		Carbon flux is the measure of the exchange of carbon as gaseous CO between ecosystems and the atmosphere, and the balance between photosynthesis by vegetation, and respiration by animals, plants and microbes.
	academic.evergreen.edu /n/nadkarnn/walkway/Edoc1.htm (7831 words)

	Life Underground: Soil Tests
		As both the air and soil temperatures begin to warm, the activity levels above and below the ground are on the rise.
		If you are near a pond or a stream, listen for their calls in the evening and try and record when you first begin to hear them in early spring.
		As the soil begins to thaw and warm up, tiny seeds which were dormant throughout the winter and protected by tough seed coats soften in the moist soil environment and send their shoots to the soil surface.
	collaboratory.nunet.net /fmnh/underground/soiltests.html (474 words)

	Food for Life - school meals \| Making change (campaigns) \| Get involved \| Soil Association
		The Food for Life programme is the Soil Association's award winning programme to transform school meals and food culture in schools.
		Food for Life is based around the whole school approach - which encourages children, parents, catering staff, governors, headteachers and producers to all fully engage in changes to school food provision.
		A dedicated new Food for Life partnership website is currently in development, please watch this space for future announcements.
	www.soilassociation.org /foodforlife (269 words)

	Soil
		Soil is a mixture of mineral and organic materials plus air and water.
		Biological soil crusts are formed by living organisms and their by-products, creating a crust of soil particles bound together by organic materials.
		Using a paper towel to remove water from soil, students determine that water is one of the four ingredients in the soil.
	www.42explore.com /dirt.htm (1265 words)

	secret life plants & soil (Site not responding. Last check: 2007-11-02)
		Secrets of soil is more grounded in practical organic growing systems, like Biodynamic gardening; essential to PermaCulture which blossomed in ‘80s and ‘90s.
		PC is a natural ‘design process’ of sustainable organic living on land and growing all we need near-by in circles and cycles of evolution.
		It combines the best science and natural wonders of life, like why and how our ‘green thumb’ really works to grow things better.
	www.efn.org /~ecozma/sunergy/zenergy/secretplantsoil.html (264 words)

	Creating Healthy Soils
		When you have healthy soil, you will get results of healthier, stronger, disease resistant plants.
		Please take time to browse through our site and discover who we are and what we represent.
		We are about understanding the living, dynamic system of micro soil organisms that can and will provide a healthy environment for your plants, pets and family.
	www.soil-life.com (58 words)

	Soil for Life Soil Improvement Soil Science
		It could perhaps be seen as the 'open source' of soil.
		We ask that you join the forum and take part in the discussion, if there are no matters of interest for you, then begin a thread.
		If you are here then you are curious about soil matters, let's all share in that curiosity, nothing is too big nor too small, a school project is just as important as a research project, they both begin with a question.
	soilforlife.org (150 words)

	Temporal Erosion-Induced Soil Degradation and Yield Loss -- Sparovek and Schnug 65 (5): 1479 -- Soil Science Society of ...
		Soil erosion and sediment deposition map for the Ceveiro watershed.
		area to reach the minimum soil depth was estimated to +563 yr.
		Sugarcane relative yield loss and accumulated area with soil depth equal to minimum depth (life time) as a function of time for the Ceveiro watershed.
	soil.scijournals.org /cgi/content/full/65/5/1479 (2708 words)

	Disease life in soil - Soil Forum - GardenWeb (Site not responding. Last check: 2007-11-02)
		Just to make sure your soil is as healthy as it can be, you might consider scattering a light dusting of compost and some corn meal or used coffee grounds under the drip zone.
		Aphids overwinter as eggs in the soil, but in a good, healthy soil there will be wee critters that will dine on those eggs.
		So start with your soil and be sure that it is well balanced and well endowed with organic matter so the soil is evenly moist but well drained.
	forums2.gardenweb.com /forums/load/soil/msg0619594910935.html (1072 words)

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