Performance of Sweet Potato vine types planted with leaves attached and with leaves removed on Yield of tubers in the South eastern Lowveld of Zimbabwe

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Daniel Chipanga, Gracious Truth Phiri, Ellitah Macheke and Rosemary Chireyerwe Dube

                                                            Chiredzi Research Station, P. O. Box 97, Chiredzi, Zimbabwe

Terminal portion of sweet potato (Ipomoea batatas (L .) Lam) vine is reputed to be superior to the middle and basal portions for plant establishment and root yield. A trial evaluating the effect of different vine cuttings planted with leaves attached and with leaves removed on yield of sweet potato tubers was conducted in the South East Lowveld under irrigation during winter season in 2015, 2016 and 2017. Basal, middle and terminal vine cuttings planted with leaves attached and with leaves removed per vine type were used.  Treatments were basal  vine cuttings planted with leaves  on Germany 2 (BPWLG2),   basal  vine cuttings planted with leaves removed on Germany 2 (BPWLRG2),   middle vine cuttings planted  with leaves on Germany 2 (MPWLG2),  middle vine cuttings planted  with leaves removed  on  Germany 2 (MPWLRG2),    terminal vine cuttings  planted  with leaves  on Germany 2, (TPWLG2),    terminal  vine cuttings planted with leaves removed  on Germany 2 (TPWLRG2),  mixed  vine cuttings (basal, middle and terminal)  planted with leaves  on Germany 2 (BMTPWLG2) (control),   mixed vine cuttings  (basal, middle and terminal) planted with leaves removed  on Germany 2 (BMTPWLRG2) (control),   basal  vine cuttings planted with leaves of Chingova, (BPWLC)   basal  vine cuttings planted  with leaves removed on Chingova (BPWLRC),   middle vine cuttings planted with leaves  on Chingova (MPWLC),  middle vine cuttings  planted with leaves removed on Chingova (MPWLRC),   terminal  vine cuttings planted  with leaves on Chingova (TPWLC),   terminal vine cuttings planted with leaves removed  on Chingova (TPWLRC), mixed vine cuttings (basal, middle and terminal)  planted with leaves on Chingova (BMTPWLC) (control)  and   mixed vine cuttings  (basal, middle and terminal) planted with leaves removed  on Chingova (BMTPWLRC) (control)  Control treatments were used for comparison. Results showed that there were significant difference (p<0.05) on number of marketable and non marketable tubers. There were significant difference (p<0.05) on yield of marketable tubers while  treatments interactions on yield of non marketable tubers in t/ha were not significantly different (p>0.05).

Keywords: Sweet potato, Chingova, Germany , vines and yield

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