Introduction
Today you will learn about fertilizer, the backbone of modern intensive farming using this short series of videos :
https://www.youtube.com/playlist?list=PLvugZJOzr8UoXa5rHsc9JBQwoQ980hQVy
- During the high school course of chemistry not a lot is talked about fertilizers and their manufacturing, but they are an integral part to our everyday life as it made a revolution in food production
- This will help you understand not only how it is made, but also make valuable decisions on what kind of fertilizer you should buy if the need arises, and also this should educate you in the types of fertilizers.
- This webquest consists of ten questions
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Šodien tu apgūsi mēslojuma ražošanas pamatus. Mēslojums ir mūsdienu agrekūltūras pamats, ar kuru var iepazīties šajā mazajā video sērijā;
https://www.youtube.com/playlist?list=PLvugZJOzr8UoXa5rHsc9JBQwoQ980hQVy
- Vidusskolas ķimijas kursā maz runā par mēslojumu un tā ražošanu taču mēslojums ir neatņemama mūsu ikdenas sastāvdaļa, jo tā ir izraisijusi pilnīgu revolūciju pārtikas ražošanas nozarē.
- Šis vebkvests palīdzēs tev uzzināt ne tikai kā, un no kā mēslojums tiek ražots , bet arī palīdzēs tev saprast kādi mēslojuma tipi mēdz būt un ko ietekmē katra no mēslojuma sastāvdaļām. Kopumā šis vebkvests tev palīdzēs veikt informētāku lēmumu mēslojuma iegādē.
- Šis vebkvests sastāv no desmit jautājumiem
Task
Once you have watched the short video series you will have to answer to ten questions.
For each correct question you will receive one point, for each wrong question you will receive no points.
Process
Please answer these ten questions:
- What are the three main ingredients of modern fertilizer, and which one of them is the most important?
- How does the nutrient requirements for canola compare to the nutrient requirements of wheat?
- Where does Potassium come from?
- What is the key process to potassium refinement?
- What byproduct of the oil and gas industry is key to phosphorus recovery?
- What refinement process is shared in between potassium and phosphorus refinement?
- Why cant plants use the nitrogen in the air if it contains 78% nitrogen?
- Who are the two chemists responsible for the discovery of the process of nitrogen molecule splitting?
- What is the compound in which agricultural nitrogen is stored in?
- What are the 4 R's to remember about plant nutrition?
Evaluation
The correct answers are as follows:
- Nitrogen; Phosphorus; Potassium; Nitrogen is the most important plant nutrient.
- Canola compared to wheat needs more phosphorus and three times as much sulfur.
- Potassium is mined from deep underground.
- Flotation - the process of agitating the ore suspension to foam in order to "float" off the impurities.
- Sulfur; Molten Sulfur
- Flotation
- Because the nitrogen in the air comes in two atom molecules, which the plant cannot brake down.
- Fritz Haber; Carl Bosch
- Ammonia
- Right - Nutrients; Amounts; Time; Place
Award the student one point for each correct question and don't subtract points for wrong ones!
Conclusion
Now that you have completed your task, you have gained a good understanding of fertilizer.
- You should now be able to understand the makeup of common fertilizer, and make a better decision on what type of fertilizer is better suited for the task at hand.
- And you should be able to point out some common nutrient deficiencies in plants as well as understand the source of the ingridients found in fertilizer.
Happy summer gardening!
Credits
Agrium Incorporated for providing the great video materials.