ISHS Acta Horticulturae 218: XII African Symposium on Horticultural Crops
THE RELATIONSHIP BETWEEN N, P AND K CONCENTRATIONS IN SWEET POTATO VINES AND DRY MATTER ACCUMULATION IN VINES AND TUBEROUS ROOTS AS INFLUENCED BY P FERTILIZATION |
| Authors: | K. Reshid, K. Waithaka |
| Abstract:
Higher N concentrations in vines of 'Musinya' and 'Gikanda' cultivars showed a positive correlation with dry matter accumulation in the vines and a negative correlation with dry matter accumulation in tuberous roots during both seasons. Higher K concentrations in vines of both cultivars showed positive correlations with dry matter accumulation in tuberous roots and negative correlations with dry matter accumulation in the vines whenever the N concentration in the vines were substantially lower than the K concentrations. Phosphorus concentrations in the vines of both cultivars, however, showed cultivar differences in relationship with % dry matter accumulation in vines and tuberous roots during both seasons, though the relationships were weaker as compared to the relationships of N and K concentrations in vines and % dry matter accumulations in vines and tuberous roots. | |
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