December 2016
Different soil tillage systems influence accumulation of soil organic matter in organic agriculture
As a sustainable method of agriculture, organic agriculture aims to increase the soil organic matter through the use of crop rotation, legume cover crop, animal green manure, and organic compost. These practices add organic residues with high organic Carbon (C) which results in a higher soil organic matter content over time primarily due to the no-tillage practices. However, different soil tillage systems, such as...
December 2016
Irrigation depth and harvest date in sweet potato for conversion to biofuels
This study aimed to evaluate the effect of different irrigation depths and harvest dates in sweet potato for conversion to biofuels. Irrigation treatments were 0.25, 0.50, 0.75, and 1.0 of crop evapotranspiration rates and a control treatment (without irrigation). Harvest dates were: 90, 120, 150, 180, and 210 days after planting (DAP). The sweet potato cultivar BRS Cuia (RNC-27.315) was utilized. The experimental...
December 2016
Effect of crop type and cultivar surface area on rates of decomposition in soils
Sustaining the productive capacity of soils has raised interest in the maintenance of soil organic matter through management practices and use of crop residues. While the impact of management practices has been studied, little is done to understand how the charateristics of the residue itself impact the decomposition at the soil surface. This study relates the chemical composition and the surface area of the aboveground...
December 2016
Quality of seedless watermelon cultivated under different doses and phosphorus application forms
Effects of doses and phosphorus application forms were studied on the postharvest quality in seedless watermelon hybrid 'Style'. For this, an experiment was conducted in Upanema/RN, Brazil, during the period of September to December 2013, in a randomized block at factorial scheme 5×2 constituting of five phosphorus doses applied in foundation (0, 76, 168, 275 and 397 kg ha-1 of P2O5) and foundation +...
December 2016
Crambe performance depending on the potassium doses and cultivation in red latosol
Nowadays, the society is seeking renewable energy sources that will replace in a sustainable way, fossil fuels. A source of energy that has stood out with great energetic potential showing itself to be promising in the world is biodiesel. Among several alternatives, the crop, Crambe (Crambe abyssinica Hochst) stands out as an oilseed species plant that belongs to the Brassicaceae family. This culture as a source of...
December 2016
Technical efficiency of beef cattle production technologies in Nigeria: A stochastic frontier analysis
The paper investigated the determinants of beef cattle production and technical efficiency of beef cattle farmers using stochastic frontier production function which incorporates a model of inefficiency effects. A multi-stage random sampling procedure was employed for the selection of 360 respondents comprising 97 nomads, 208 agro-pastoralists and 55 ranchers across the 6 major producing states in Nigeria. The...
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