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Nitrogen is the nutrient required in greatest amount by turfgrass. [1] During an autumn season, rates of nitrogen (N) application should be lowered to consider previous application's residual available nitrate (NO − 3) and mineralization (inorganic N), especially if there is substantial organic matter which releases its supply of sequestered ...
An alternate method is to make a single application of slow-release nitrogen fertilizer such as blood meal. Sprinkle 1 to 2 teaspoons of blood meal around each plant and gently work it into the ...
When nitrogen was added at the early-vegetative stage of Leymus chinensis, it increased the inflorescence number. Adding nitrogen during the beginning of autumn and watering the plants during the final moments of the growing season may improve yield for this plant. There is a strong correlation between increased inflorescence number and fall ...
Nitrogen dioxide is soluble in water to form nitric acid (HNO 3) dissociating in H + and NO 3 −. Ammonia, NH 3, previously emitted from the soil, may fall with precipitation as nitric acid at a rate of about five pounds nitrogen per acre per year. [61]
Approximately 78% of Earth's atmosphere is N gas (N 2), which is an inert compound and biologically unavailable to most organisms.In order to be utilized in most biological processes, N 2 must be converted to reactive nitrogen (Nr), which includes inorganic reduced forms (NH 3 and NH 4 +), inorganic oxidized forms (NO, NO 2, HNO 3, N 2 O, and NO 3 −), and organic compounds (urea, amines, and ...
Application rates should be limited to a few pounds per acre in a test plot to determine if boron is needed generally. Otherwise, testing for boron levels in plant material is required to determine remedies. Excess boron can be removed by irrigation and assisted by application of elemental sulfur to lower the pH and increase boron solubility.
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The early product had 60 percent of the total nitrogen cold-water-insoluble, and the unreacted (quick-release) less than 15%. Methylene ureas, e.g. methylene diurea, were commercialized in the 1960s and 1970s, having 25% and 60% of the nitrogen as cold-water-insoluble, and unreacted urea nitrogen in the range of 15% to 30%.
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