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The effects of nitrogen, phosphorus, and potassium on the ornamental characters ( caudex diameter and biomass, plant height, number of branches and flowers) of Begonia dregei var. macbethii were investigated via a pot experiment in the greenhouse. The results showed that compared with the standard concentration NPK treatment, the growth and ornamental traits of Begonia dregei var. macbethii were significantly decreased under nitrogen and phosphorus deficiency treatment. Increasing N and P levels could promote the caudex diameter and biomass of caudex and above-ground part, plant height, branch number, and flowering number of Begonia dregei var. macbethii to varying degrees. The growth indexes of caudex diameter, caudex biomass, and flowering number of Begonia dregei var. macbethii under 2NPK treatment were higher than those under other treatments. In conclusion, different nitrogen, phosphorus, and potassium levels significantly affected the ornamental traits of Begonia dregei var. macbethii. To maintain the healthy growth and good ornamental morphology of Begonia dregei var. macbethii, higher nitrogen and essential phosphorus were needed. [ABSTRACT FROM AUTHOR]

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Copyright of Guihaia is the property of Guihaia Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)