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Primula spectabilis

Known as: Primula spectabilis Tratt. 
National Institutes of Health

Papers overview

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2003
2003
Effects of applying nitrogen in spring on growth, flower bud formation and yield of Rosa rox-burghii Tratt
A cultivar of Rosa roxburghii Tratt, ' Guinong 5 ' was applied ammonia bicarbonate, nitrate ammonioum and carbamide in the first… 
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