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Goos, R.J
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Goos, R.J
Goos, R.J
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Type
Oral
Year
2008
2011
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1. Evaluation of Nutrisphere-N as aSoil Nitrification and Urease Inhibitor

Nutrisphere-N is a fertilizer ad ditive, which is claimed to prev ent nitrogen loss from soil through the inhibition of urease and nitrif ication. The objective of this study was to evaluate the effects of Nutrisphere-N on urease, nitr ification, and ammonia volatiliza tion from soil under controlled condition. Nutrisphere-N was mixe d with urea solutions or impregnated on urea granules and before application to soil. In the three experiments conducted, adding Nutrisphere-N had little or no effect...

2. Nitrogen Fertilizer Additives, Which Ones Work?

Nitrogen fertilizer additives were evaluated in nine different studies. In the first study, Nutrisphere had no effect on urea hydrolysis when applied with a urea solution. In a second study, Nutrisphere had no effect on nitrification when applied with a urea solution. In a third study with urea granules, Nutrisphere had little effect on ammonia volatilization. In a fourth study with urea granules, Nutrisphere had no effect on nitrification. In a fifth study, Nutrisphere was found to be less effective...

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