Abstract -Tillage Effects on Growth Performance of Hevea Seedling Rootstock and some Fertility Area of Nigeria


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	Publications of MRB Latest Publications MRB Digest Journal of Rubber Research 4^th Qtr 2008 Vol 11(4) 3^rd Qtr 2008 Vol 11(3) 2^nd Qtr 2008 Vol 11(2) 1^st Qtr 2008 Vol 11(1) 4^th Qtr 2007 Vol 10(4) 3^rd Qtr 2007 Vol 10(3) 2^nd Qtr 2007 Vol 10(2) 1^st Qtr 2007 Vol 10(1) 1^st Qtr 2006 Vol 9(1) 2^nd Qtr 2006 Vol 9(2) 3^rd Qtr 2006 Vol 9(3) 4^th Qtr 2006 Vol 9(4) Submit paper/article Order Form	Abstract Tillage Effects on Growth Performance of Hevea Seedling Rootstock and some Fertility Area of Nigeria I.K. Okore#, F.A. Akpobome, H. Tijani-Eniola** and E.A. Oghide* Vast amount of resources are devoted annually for the establishment of Hevea seedling rootstock nursery through conventional tillage, despite global disposition of conservative tillage. A field experiment was carried out to evaluate the effect of tillage methods, namely, plough+harrow, plough only, bed and without tillage on the growth performance of Hevea brasiliensis (natural rubber) seedling rootstock and the nutrient status of sandy acid soil in a forest area (Benin) of Nigeria for two years. In both cropping years (2003/2004 and 2004/2005) , the effect of tillage methods on seedling height and stem girth did not differ significantly (P³0.05). However, seedling dry matter and budding success (69.8 g/tree and 78% on the average, respectively) were significantly higher in the ploughed plots. The plots with no tillage, followed by raised seedbed treatments, had significantly higher values of organic C, available P and exchangeable bases with low levels of Al³⁺ and H⁺ at 0 cm ¾ 15 cm depth. Having recorded no significant difference in crop performance between the nil-tillage and plough+harrow plots, but higher soil nutrient levels in the treatments without tillage for two years; it could be predicted that land preparation without tillage, in addition to ploughing only or raised seed-bed was a better alternative to plough+harrow which often caused soil degradation in the sandy acid soil of high rainfall areas. back
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