(10 pts) You have lost the liming recommendations sent to yo…
(10 pts) You have lost the liming recommendations sent to you by the soil laboratory, but you do recall that 5 tons of CaCO3 were recommended per hectare for field B. Because the pH measured in water is the same in both fields, you apply 5 tons to field A as well. Have you acted wisely? Why or why not? (10 pts) Adding lime will also increase % base saturation. A grower indicated that adding gypsum to field B will do the same thing to its properties and fertility at half the cost as adding lime. What would you advise that grower and why?
Read DetailsThe C:N and N:P ratios are important properties of organic a…
The C:N and N:P ratios are important properties of organic amendments and crop residues. (10 pts) Describe what should happen to N in amendments when the C:N ratio is 8:1 vs. 45:1, and a representative example of an organic amendment or a crop residue for each of these two ratios. (10 pts) Describe how the N:P ratio in amendments differs from the N:P of crop removal, and the two possibilities in terms of meeting crop N and P demand when fertilizing exclusively with organic amendments (note: you cannot meet both crop N and P demand exactly when using only organic amendments, so one of the two nutrients will be off when you meet the demand of the other nutrient).
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