Influence of selected fungicides and hormone on the rooting success of Shea (Vitellaria paradoxa gaernt) stem cuttings

摘要

The sheanut tree (Vitellaria paradoxa Gaertn) is indigenous to the Guinea Savanna belt of WestAfrica extending from Senegal in the West to Sudan in the East. The tree’s response tovegetative propagation methods is very poor and inconsistent. Impact of different fungicides(Ridomil 72 plus, Dithane M45, Nordox 75 and Kocide 101), their different concentrations andfrequencies of application and the application of a hormonal rooting powder (Seradix 3) werestudied at Bole, Ghana from June to August, 2005. Significant rooting was observed whenDithane M45 was applied at 2000ppm three times (once every two weeks) during the rootingperiod and gave the highest rooting performance when combined with Seradix 3 hormone. Highconcentrations of Dithane M45 did not significantly affect the degree of infection on cuttings.However, cuttings which were not sprayed with any fungicide recorded significantly (P< 0.05)high fungal infection. Ridomil 72 Plus, Kocide 101and Nordox 75 lower rooting performance inshea cuttings.