Ammonia volatilisation from spreading sulfate of ammonia and lime in close succession – WA (Factsheet)
This Grain Research and Development Corporation (GRDC) factsheet investigates the effect of applying lime and sulphate of ammonia in close succession prior to seeding when planting grains in sandy soils. Anecdotal evidence suggests that spreading lime and sulfate of ammonia on dry soil in close succession prior to seeding may be decreasing fertiliser nitrogen use efficiency because of ammonia volatilisation (when ammonia gas is lost to the atmosphere). The glasshouse study tested this idea using 2 Western Australian acidic cropping soil types (sodosols and tenosols). It found that the practice did significantly increase the amount of ammonia volatilisation, particularly if light rain occurs after application. While the content is written for Western Australian soils, it may also apply to other Australian regions.#
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