March 2016
Brown flax grown under different planting densities
This study aimed to evaluate the influence of the planting system and population densities in the culture of flax. The experiment was conducted on the campus of the State University of Paraná, in the year 2012, using the split-plot design, where the main plots were the planting systems (line and haul) and plots the densities (100, 150, 200 and 250 plants/m²). The characteristics evaluated were: plant height,...
March 2016
Soil waterlogging during late season: Growth, assimilate partitioning and vigor of bean seeds
Late season crops in planossoil are prone to waterlogging associated with high temperatures that are characteristic of the season, during brief periods of time in early summer. The aim of the present study was to evaluate growth, assimilate partitioning and seed vigor of bean plants subjected to periods of waterlogging and high temperatures during late season. Bean plants of the IPR Tuiuiú genotype were submitted...
March 2016
Ethnopedology for solving problems of soil management and sustainable agriculture implementation in West Africa Savannah regions
Recently many scientific studies have shown the relevance of ethnopedological informations in the different agro-ecological and socio-cultural context of Africa. However, information did not sufficiently serve in solving the problems of land degradation and famine affecting seriously Sub-Saharan nations. Strategies of best and wide use of indigenous knowledge are to be refined. The main objective of the present article...
March 2016
Alternative methods of biological control in maintaining the viability of stored coffee seeds
The objective of this work was to evaluate the efficiency of different alternative methods of biological control in maintaining the viability of coffee seeds. For the control of fungus contamination in seeds, dehydrated and powdered medicinal plants in doses of 200 g kg-1 of seed, were tested with chemical fungicides mancozebe (Dithane® NT 4 g kg-1 of seed), potassium sorbate (300 g L-1) and sodium benzoate...
March 2016
Grain sorghum leaf reflectance and nitrogen status
Nitrogen deficiency is a common but readily managed constraint to grain yield. A quick and non-destructive detection of crop N status using remote sensing could be a means to increased N use efficiency. Research was conducted in a greenhouse in 2006 at the University of Nebraska-Lincoln to establish the relationship of spectral reflectance with N status in leaves of grain sorghum, to develop indices for interpretation...
March 2016
Reactions of improved faba bean varieties to chocolate spot (Botrytis fabae Sard.) epidemics across contrasting altitudes in southwest Ethiopia
Chocolate spot (Botrytis fabae Sard.) is one of the major diseases menacing faba bean (Vicia faba L.) production and restraining its productivity in Ethiopia and other African countries. The yield losses reach up to 100% on susceptible cultivars. Although a number of faba bean varieties with good yield potential have been released, their reaction to this major disease and yield performance are little understood in...
March 2016
Assessing the effects of agroecology and conventional farming techniques on small-scale peasant farmers’ crop yields in the Fako and Meme divisions of Cameroon
Small-scale farming constitutes a very important segment of the food production chain in most third world countries. In Cameroon for example, they constitute about 70% of the agrarian population. This study aimed at verifying the effects of agroecology and conventional farming techniques on crop yields in four sites in the South West Region of Cameroon from small-scale farms. Data were obtained through the...
March 2016
Common bean evapotranspiration estimated by orbital images
Evapotranspiration quantification is essential for water management in irrigated crops because it represents the crop water demand, and knowledge prevents water and energy waste, besides productivity breaks. This study aimed to estimate common bean actual evapotranspiration through orbital images, using the simple algorithm for evapotranspiration retrieving (SAFER) algorithm. In order to achieve this, actual...
March 2016
Performance of populations of Sitophilus zeamais Motschulsky (Coleoptera: Curculionidae) on different varieties of maize
Post-harvest losses of maize due to storage insect pest such as the maize weevil, have been recognized as an increasingly important problem in the world. A study was conducted with the objectives to determine the performance of Sitophilus zeamais populations originating from the five Brazilian regions in five varieties of maize and to correlate these variables with the enzymatic activity of insects and nutritional...
March 2016
Altered climate and livelihood of farming families in Niger Delta region of Nigeria
This study focused on how altered climate has affected the livelihood of the farmer and the farming families in Niger Delta region of Nigeria. The study adopted descriptive survey research design. This study had two research questions and two hypotheses. The population for the study was 246,807 made up of registered farmers. Proportionate stratified random sampling technique was used to select a sample size of 4,936 as...
March 2016
Economic viability of implementing a diesel generator group in a grain storage facility located in the City of Cascavel, State of Paraná, Brazil
The objective of the present study is to verify the viability of implementing a diesel-generating group, which would work at peak times, in a grain-processing facility located in the town of Cascavel, in western region of Paraná, Brazil. The demand and consumption of electrical energy for the unit were determined for four operational scenarios. For each of these scenarios, the annual cost of using a diesel-fueled...
March 2016
Auxin induced rooting of cactus pear (Opuntia ficus-indica L. Miller) cladodes for rapid on-farm propagation
The effect of exogenous auxins on the development of root system in cladodes of Opuntia ficus-indica was tested using different concentrations of indole butyric acid (lBA), naphthalene acetic acid (NAA) and a combination of IBA and NAA, and the control treated with 50% aqueous solution of ethanol. Results obtained showed that rooting in cladodes is most effective when treated with 2500 mg L-1 of IBA. A non-significant...
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