Group items tagged nutrients - Biology Project BradfordA

Essential Plant Nutrients - 0 views

www.cartage.org.lb/...EssentialPlant.htm

Plant nutrients

shared by bacoco coco on 09 Apr 10 - Cached

Plants require 13 mineral nutrient elements for growth
...

Cancel
Macronutrients (nitrogen, phosphorus, potassium, calcium, magnesium and sulfur) are plant nutrients required in the largest amount in plants. Micronutrients (iron, copper, manganese, zinc, boron, molybdenum and chlorine) are required in relatively smaller amounts. Additional mineral nutrient elements which are beneficial to plants but not necessarily essential include sodium, cobalt, vanadium, nickel, selenium, aluminum and silicon
...

Cancel
- bacoco coco on 09 Apr 10
  
  Nutrients (in the soid) are needed either in large amounts (macronutrients), medium amounts (micronutrients), or in trace amounts
  
  <div class="cArrow"> </div><div class="cContentInner">Nutrients (in the soid) are needed either in large amounts (macronutrients), medium amounts (micronutrients), or in trace amounts</div>
  
  ...
  
  Cancel
...

Cancel
...5 more annotations...
Five types of deficiency or toxicity symptoms are observed:
- bacoco coco on 09 Apr 10
  
  Here are the visible signs if the soil does not have enough of or too much of a nutrient.
  
  <div class="cArrow"> </div><div class="cContentInner">Here are the visible signs if the soil does not have enough of or too much of a nutrient.</div>
  
  ...
  
  Cancel
...

Cancel
- bacoco coco on 09 Apr 10
  
  Plants can be damaged is there is too much of one nutrient (toxicity) or not enough of a nutrient (deficiency).
  
  <div class="cArrow"> </div><div class="cContentInner">Plants can be damaged is there is too much of one nutrient (toxicity) or not enough of a nutrient (deficiency). </div>
  
  ...
  
  Cancel
...

Cancel
A nutrient deficiency occurs when the nutrient is not in sufficient quantity to meet the needs of the growing plant. Nutrient toxicity occurs when a plant nutrient is in excess and decreases plant growth or quality
...

Cancel
Essential plant nutrients: their relative amounts in plants, functions and classification
- bacoco coco on 09 Apr 10
  
  This table may be helpful in determining a topic for an experiment. You would only want to choose one nutrient with which to run an experiment.
  
  <div class="cArrow"> </div><div class="cContentInner">This table may be helpful in determining a topic for an experiment. You would only want to choose one nutrient with which to run an experiment.</div>
  
  ...
  
  Cancel
...

Cancel
Table 2. Generalized Symptoms of Plant Nutrient Deficiency or Excess
...

Cancel

The Nature of Phosphorous in Soils - 0 views

www.extension.umn.edu/...DC6795.html

BradBioA Blaire Phosphorous and plant growth nutrients

shared by blaire stillwell on 14 Apr 10 - Cached

blaire stillwell on 14 Apr 10

The nutrient Phosphorous in soils and how it affects plant growth.

<div class="cArrow"> </div><div class="cContentInner">The nutrient Phosphorous in soils and how it affects plant growth. </div>

...

Cancel
blaire stillwell on 14 Apr 10

The nutrient Phosphorous in soils and how it affects plant growth.

<div class="cArrow"> </div><div class="cContentInner">The nutrient Phosphorous in soils and how it affects plant growth.</div>

...

Cancel

Hypoxia in the Northern Gulf of Mexico - 0 views

www.gulfhypoxia.net/Overview

Crouch

shared by Judi Crouch on 12 Apr 10 - Cached

Hypoxia, or oxygen depletion, is an environmental phenomenon where the concentration of dissolved oxygen in the water column decreases to a level that can no longer support living aquatic organisms.
...

Cancel
Hypoxic and anoxic (no oxygen) waters have existed throughout geologic time, but their occurrence in shallow coastal and estuarine areas appears to be increasing as a result of human activities (Diaz and Rosenberg, 1995). The largest hypoxic zone currently affecting the United States, and the second largest hypoxic zone worldwide, occurs in the northern Gulf of Mexico adjacent to the Mississippi River on the Louisiana/Texas continental shelf.
...

Cancel
What causes hypoxia? Major events leading to the formation of hypoxia in the Gulf of Mexico include: Freshwater discharge and nutrient loading of the Mississippi River Nutrient-enhanced primary production, or eutrophication Decomposition of biomass by bacteria on the ocean floor Depletion of oxygen due to stratification
...

Cancel
...5 more annotations...
Mississippi River nutrient concentrations and loading to the adjacent continental shelf have greatly changed in the last half of the 20th century. During this time there has been a marked increase in the concentration of nitrogen and phosphorous in the Lower Mississippi River. This increase has been attributed to the increased use of nitrogen and phosphorous fertilizers,
...

Cancel
Eutrophication
...

Cancel
eutrophication initiates a massive growth of phytoplankton on the water’s surface.
...

Cancel
This stratification leaves the bottom layer isolated from the surface layer and cut off from a normal resupply of oxygen from the atmosphere.
...

Cancel
Hypoxia was first documented in the northern Gulf of Mexico off the Louisiana coast in 1972.
...

Cancel

Judi Crouch on 12 Apr 10

Good intro to the concept of "dead zones" (hypoxia)

<div class="cArrow"> </div><div class="cContentInner">Good intro to the concept of "dead zones" (hypoxia)</div>

...

Cancel
Judi Crouch on 12 Apr 10

This is a good introduction to the concept of a "dead zone."

<div class="cArrow"> </div><div class="cContentInner">This is a good introduction to the concept of a "dead zone."</div>

...

Cancel
Judi Crouch on 12 Apr 10

What does anthropogenically mean?

<div class="cArrow"> </div><div class="cContentInner">What does anthropogenically mean?</div>

...

Cancel