WSU Tree Fruit Research & Extension Center

Organic & Integrated Tree Fruit Production

Tuesday, July 17, 2018


Browse on keywords: fertility nitrogen nitrification inhibitor

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Search results on 07/17/18

442. Anon.. June 1990. New way to reduce N losses.. The Furrow, p. 15.
Arvin Mosier, USDA-ARS at Fort Collins, CO, has developed a new nitrification inhibitor. It involves applying shellac-coated calcium carbonate crystals to the soil. The crystals react with soil moisture to form acetylene gas, which slows nitrification, and the action is a slow-release one that lasts several weeks. In tests using 20 lb/ac of crystals, the value of the nitrogen saved was 10 times the cost of treatment. A commercial process still needs to be developed. // Excessive N fertilizer can reduce the vitamin C content of some green vegetables (chard, green beans) by as much as 50%. It is mostly a dilution effect from accelerated growth.

3356. Jain, J.M., G. Narayanasamy, M.C. Sarkar and M.N. Datta. 1980. An evaluation of nitrification retardation property of Citrullus colosynthis.. J. Indian Soc. Soil Sci., 28(4):480-484.
An evaluation of nitrification retardation property of Citrullus colosynthis cake and its influence on yield and N uptake by wheat. Citrullus colosynthis oilcake was tested as nitrification retarder under laboratory and greenhouse conditions. The same showed NH4-N conservation when applied at the rate of 5 and 10% by weight of urea. Higher rate (20%) of the cake resulted in NO2-N accumulation leading to lower N recovery by wheat.

4694. Murray, G.A.. 1976. N-serve and its potential use in northern Idaho.. ID Agr. Expt. Sta. CIS #313.
Nitrification inhibitor; apply with anhydrous or aqua ammonia; must be incorporated; use rate of 1/2-1 qt/ac; most effective on forest-type soils, with a clay layer; not effective when used in spring; cost about $3.50/ac; not recommended for deep Palouse type soils. T: wheat yields, N rates.

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