Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Aeration
A well-aerated soil is one in which gases are available to plant roots and other soil organisms, in sufficient quantities and in proper proportions to support their normal respiratory activities. It is important that oxygen which is necessary for soil biota is continuously renewed to support metabolic activities.
A soil which is considered well aerated must have the following two characteristics. First, sufficient space for air movement should be present. Second, there must be ample opportunity for the ready movement of gases into and out of the soil. Soil aeration is an important factor having far reaching influence on the metabolic activity of plant roots and other soil organisms. Continuous supply of oxygen in the soil is necessary to sustain soil organisms.
One of the most apparent effects of poor soil aeration is the reduction in the rate of organic matter decomposition, which you might recall is an essential process to maintain soil fertility. The reduced rate of break down of organic matter is due to the lack of oxygen rather than from the built up of carbon dioxide. Accumulation of organic matter in swampy areas shows that the lack of oxygen retards the decomposition of organic matter.Aerobic soil organisms are unable to survive in the absence of gaseous oxygen. For example, bacteria that are responsible for the oxidation of nitrogen and sulphur are relatively ineffective in poorly aerated soils. This is also true for the symbiotic nitrogen fixers and some of the free living nitrogen fixers such as azotobacter.
Higher plants are also adversely affected by poor soil aeration because the root growth is curtailed; nutrient and water absorption is adversely affected; and certain toxic elements accumulate in poorly aerated soils.
Besides the liver which is the other adnexal gland of the digestive system that releases substances in the duodenum participating in extracellular digestion? The other adnexal
Define the Starch gel electrophoresis? Starch gel has the advantage of fine texture and absence of protein adsorption with a molecular sieving effect retarding proteins of larg
Assume that after washing your hands, you leave ten bacteria cells on a new bar of soap. You then decide to do a plate count of the soap after it was left in the soap dish for 24 h
Pollen Stigma Interaction - Stigma The Stigma After landing on the stigma pollen grain germinates, and produces a pollen tube that carries the male gametes. The stigma has bee
What is Mucic Acid Test and its principle? This is a specific test for galactose and is given by galactose as well as lactose, which is made up of galactose and glucose. Pr
What is Osmosis ? Osmosis : Osmosis refers to the diffusion of water across a semi-permeable membrane from an area of higher concentration of water to an area of lower con
Basic Research Terms: Some of the basic terms that are defined in this section are: Assumptions Operational Definitions Variables Delimitation and Limitation H
Explain Sodium alginate Sodium alginate helps in aiding cloud retention and inhibits clarification in orange squash and crush. It has been used as the most efficient stabilizer
How much salt is in the human body? 50 Kilo human has about 7 tablespoons of salt inside there body.
Give number of valence electrons for technetium. Write out electronic configuration for the valence electrons. Give the number of valence electrons and the number of electronic con
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd