Staff Members - Benha University
A Comparative Study on the Effect of Traditional and Controlled Release N Fertilizers on Fruiting and Fruit Quality of Balady Mandarin Trees. Research Journal of Agriculture and Biological Sciences, 8(2): 115-126.
• 2013
Publication Information
Authors
1Helail, B.M.El-Badawy, H.E.M.; Zaied, N.S. and Seyam, G.A.A.
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publication.type
International
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Abstract
A four year trial was conducted during 2006-2009 seasons in Balady mandarin orchard .Two N fertilizer
forms: a. traditional N fertilizers i.e. ammonium sulfate and ammonium nitrate and b. controlled release N
fertilizers namely urea formaldehyde and phosphorus coated urea .Two N fertilizer rates 200 & 300g N/tree and
400 & 600g N/tree were tested for conventional N fertilizers in an expected "Off" and "On" years, respectively.
Moreover, 100 & 150g N/tree and 200 & 300g N/tree were tested for controlled release N fertilizers in an
expected "Off" and "On" years, respectively. Application frequency of traditional N fertilizers was tested under
four application systems, whereas, controlled release N fertilizers were applied once a year. Briefly, the two
tested controlled release N fertilizers at the two rates reduced N application rate and enhanced the studied tree
productivity parameters without adverse effect on fruit quality.
forms: a. traditional N fertilizers i.e. ammonium sulfate and ammonium nitrate and b. controlled release N
fertilizers namely urea formaldehyde and phosphorus coated urea .Two N fertilizer rates 200 & 300g N/tree and
400 & 600g N/tree were tested for conventional N fertilizers in an expected "Off" and "On" years, respectively.
Moreover, 100 & 150g N/tree and 200 & 300g N/tree were tested for controlled release N fertilizers in an
expected "Off" and "On" years, respectively. Application frequency of traditional N fertilizers was tested under
four application systems, whereas, controlled release N fertilizers were applied once a year. Briefly, the two
tested controlled release N fertilizers at the two rates reduced N application rate and enhanced the studied tree
productivity parameters without adverse effect on fruit quality.