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Field experiments were conducted at Akure and Obaile in Southwest Nigeria to test effect of sawdust ash manure treatments on cowpea (var. 1T82D – 716), okra (var. NAAe – 47 – 4) and Roma variety of tomato. The nutrient analysis of leaf and pod of okra given by different sawdust ash manure treatments was done. Sawdust ash manure applied at 4t/ha increased growth and yield parameters of cowpea. Sawdust ash applied at 3 to 12 t\\ha increased pod yield of Okra and 9t/ha sawdust ash was optimum. Sawdust ash applied at 3, 6 and 9t/ha increased Okra leaf and pod P, K, Ca and Mg contents. Sawdust ash manure increased number and weight of tomato fruits significantly. Relative to control, 2, 4, 6 and 8 t/ha ash increased number of tomato fruits by 109, 226, 265 and 226% respectively, and the equivalent values for fruit weight were 29, 55, 64 and 57%. The 4t/ha sawdust ash is recommended for cowpea and tomato.

Key words: Sawdust ash; nutrient; soil; crops

Moor Journal of Agricultural Research Vol.4(2) 2003: 178-182