Soil And Plant Nutrition: Chapter 37 Flashcards
What does soil contain
A complex living ecosystem
What does soil particles come from
The breakdown of rocks
How do soil particles affect mineral availabilities
It affects the availability of Water, oxygen, minerals in the soil
What is topsoil
It is a complex ecosystem; roots, animals, bacteria, fungi, protists
What are two things that plant roots can absorb
Micro nutrients and macronutrients
What are macro nutrients
They are elements that can be acquired in large amounts
Hydrogen, oxygen, nitrogen macro nutrients
What are Micro nutrients
Elements that are acquire small amounts
They are usually a cool factor of enzymes so a lot of them have catalystic functions 
What is the most common deficiency in plants
Macro nutrient deficiencies are the most common
What is the rhizosphere
They are micro organism enriched ecosystem that is heavily associated with roots
Explained of the energy model the rhizosphere
Plant secretion → rhizosphere → rhizobacteria
Functions of rhizobacteria
Can produce antibiotics, they can make it easier for plants to get nutrients, some live inside of plants
Main nitrogen sources for plants
Humus and fixation of gaseous nitrogen
What is Humes
Bacterial decomposition that produces nitrogen
Nitrogen fixation
Is it converts nitrogen from the atmosphere into nitrogen is materials that plants can absorb
Main nitrogenous Mutualistic relationship
It is between plants and Rhizobium
Rhizobium is a nitrogenous fixing bacteria in the nodules of plants. It gets sugar for the plants and supplies the plant fixed nitrogen
