Showing posts with label soil science. Show all posts
Showing posts with label soil science. Show all posts
Monday, April 30, 2018
Photos from today's experiment on the effect of light rate on Photosynthesis. Please watch the clip below to revise.
The results from the soil sample taken in October 2017 from our first Field trip have came back. Please open to the document to see more clearly.
I have edited so as to highlight the areas important for your Ag project. The have a yellow star beside it.
Key terms -
pH - the acidity of the soil. Ideal pH for grass is 6.3 Can be improved by adding lime. On our farm all fields could do with some addition of lime. One field in particular needs particular attention. Which one? We will apply lime to this field over the course of 2 years as you should never apply more than 2 tonnes per acre in any one application as this will badly affect soil structure.
LR - Lime requirement
P and K - The phosphorus and potassium levels are graded on an index from 1 to 4 with 1 being the lowest. It is advised that all grasslands should be at index 3 to make the best use of all fertiliser applications. We need to address this in most fields. The most cost efficient way is by spreading slurry and FYM though we may use a compound fertiliser like 18-6-12 to help this.
Overall we have found many benefits from taking this particular soil test.
It highlights nutrient deficiencies in areas of our farm and as such gives us the knowledge how to address it. It must be noted that achieving best conditions in all fields will not be required as our farm has a low stocking rate and as such the input improvement costs need to taken into account when progressing the farm business forward.
Please watch and answer the questions as the clip progresses. Many thanks to ccmagscience for creating the original video.
Do you know what each word means?
Please click here to complete online test for soil. Classroom code is DEBLPHCI.
Please complete the following quizlet on Soils in all study modes. Start with flashcards, then Scatter and Learn and finish with the Test mode.
Watch clip to pick up tips on Soil Sampling
Please click to enlarge and revise for exam.
Many thanks to Gareth K and Mark M for the Quizlets below. Go through each in Flashcard mode and revise using the Scatter, Learn and Test study modes. These can be accessed at the bottom of each quizlet .
Well done boys.
Please watch the clip below (up to 5 mins 18 secs) to develop your understanding of the Nitrogen Cycle. Remember you do not need to know the names of the enzymes involved in the Nitrogen cycle. All other keywords mentioned need to be known. This clip will also be of benefit to any of you studying LC Biology.
Watch the clip below paying heed to the following key words.
Texture - Propotion of Sand,Silt and Clay
Porosity - Water holding capacity of Soil
Permeability - Rate at which water flows through