Stem maintenance respiration rates were measured in five contrasting balsam fir (Abies balsamea (L.) Mill.) stands. At 15 degrees C, average respiration rates for individual stands ranged from 120 to 235 micro mol m(-3) s(-1) when expressed per unit of sapwood volume, from 0.80 to 1.80 micro mol m(-2) s(-1) when expressed per unit of stem surface area, and from 0.50 to 1.00 micro mol g(-1) s(-1...

This study was conducted to estimate the relative profitability of Maize production under different farm size groups. Data were collected from randomly selected 74 maize growing farmers of which 25 were small, 32 were medium and 17 were large considering the scope and potentials of maize production at Kishoregonj district. To achieve the objectives of the study, descriptive statistical techniqu...

This research covered three villages in Kura local Government Area of Kano State. The study described the socio-economic characteristics of maize producers and their production techniques and also determined the profitability and resource use efficiency in the maize production. Structured questionnaires were used for primary data collection and 40 small scale producers were purposively selected...

The previous chapters focused on first generation biofuels. In this chapter we focus on second generation biofuels, specifically biofuels derived from cellulosic or lignocellulosic conversion. Advocates for the development of cellulosic conversion believe that second generation technology avoids many of the adverse consequences of first generation biofuels: it does not directly compete for food...