Guler et al. (2008) tried using a mixture of European black pine (Pinus nigra
(Arnold)) wood chips and peanut hull (Arachis hypoqaea (L.)) with different hull
contents (0%, 25%, 50%, 75%, and 100%) and reported an optimal peanut hull to wood
chip ratio of 1:4. The panels produced at the optimized ratio showed good physical and
mechanical properties.