In West Africa two rice species (Oryza glaberrima Steud. and Oryza sativa L.) co-exist. Although originally it was thought that interspecific hybridization is impossible without biotechnological methods, progenies of hybridization appear to occur in farmer fields. AFLP analysis was used to assess genetic diversity in West Africa (including the countries The Gambia, Senegal, Guinea Bissau, Guine...

Asexual reproduction imposes evolutionary handicaps on asexual species, rendering them prone to extinction, because asexual reproduction generates novel genotypes and purges deleterious mutations at lower rates than sexual reproduction. Here, we report the first case of complete asexuality in ants, the fungus-growing ant Mycocepurus smithii, where queens reproduce asexually but workers are ster...

Sugar cane growers in Puerto Rico are faced with problems of weed control as any other farmer in the world. He is faced with increased cost of production of cane, through higher labor and material costs. When labor costs were low, much of the weed control was done by many men using machetes and other implements. As every farmer knows "weeds are plants out of place." Since beginning of farming, ...

We’ve all been given a problem in a calculus class remarkably similar to the following one: Farmer Ted is building a chicken coop. He decides he can spare 190 square feet of his land for the coop, which will be built in the shape of a rectangle. Being a practical man, Farmer Ted wants to spend as little as possible on the chicken wire for the fence. What dimensions should he make the chicken co...

Comparative farmer field trials can be an important channel for the successful evaluation, reliable evidence, and acceptance of agricultural technologies. Farmer-managed comparative reinforce extension system as they validate new technologies in farmers' conditions. Thus, on-farm allow farmers to evaluate differentiable impact tested technology their settings. The ingrained concept

Objective – To study the incidence of male factor infertility and type of semen abnormality in the farmer couple attending our infertility outpatient clinic. MethodDatabase of 3100 patients with male factor infertility were retrospectively reviewed. Patients were divided in two groups for analysis: group 1 – farmer , group 2 – non farmer. Records of semen analysis and serum FSH (Follicle stimul...

In this paper, the assessment of multiple scenario cases for large-scale farm monitoring using Low-Power Wide-Area Network (LPWAN) based near-ground sensor nodes with interaction both tractors and farmers are presented. The proposed under analysis considers communication links, namely to infrastructure, tractor, farmer, tractor infrastructure farmer communications. Moreover, these scenarios agr...

The Ethiopian education system is characterised by extremely low participation rates, particularly in rural areas. This paper challenges the hypothesis that demand for schooling in rural Ethiopia is constrained by the traditional nature of farm technology and lack of visible benefits of schooling in terms of farmer productivity. The effects of schooling upon farmer productivity and efficiency a...