In this section I characterize the optimal choices of farmers. I discuss the optimal choices of farmers for a plot ω, conditional on allocating a positive fraction of plot ω to the production of crop k, (φi,k (ω) > 0), an event I denote ω ∈ Ωi,k. Then I move on to prove the three main Propositions in the paper. Using Assumptions #1 and #2, I first show how to calculate the fraction of land allo...

The availability of nitrogen is one of the major limiting factors to crop growth. In the developed world, farmers use unsustainable levels of inorganic fertilisers to promote crop production. In contrast, in the developing world inorganic fertilisers are often not available and small-holder farmers suffer the resultant poor yields. Finding alternatives to inorganic fertilisers is critical for s...

This study was carried out to relate the diversity of one crop in terms of number of landraces and farm area with the diversity of other crop. Information collected during baseline survey of in-situ global project (1999) on three crops namely rice, finger millet and sponge gourd in Jumla, Kaski and Bara of Nepal were used. Farm area of each variety and number of landraces grown by sampled house...

After domestication, plant species were often transported widely, and many genetically distinct farmers’ varieties (FVs, crop varieties traditionally maintained and grown by farmers) developed in specific locations. FVs continue to be grown today by many small-scale farmers in traditionally-based agricultural systems (TBAS), fulfilling both local or regional consumption needs, as well as the la...

Potential growth of dairy sector is highest and more reliable compared to crop sector, indicating that dairy sector can play vital role to increase income among farmers in rural areas than crop sector in Sri Lanka. Credit and farmer training in management ability have been major concerns of dairy development efforts. Therefore, this study wasconductedto assess the impact of credit and farmer tr...

Agriculture research uses "recommendation domains" to develop and transfer crop management practices adapted to specific contexts. The scale of recommendation domains is large when compared to individual production sites and often encompasses less environmental variation than farmers manage. Farmers constantly observe crop response to management practices at a field scale. These observations ar...

the present study was conducted in the central region of khyber pakhtunkhwa (kpk), pakistan comprising seven districts: peshawar, charsadda, nowshera, mardan, swabi, kohat and hangu, during 2010. the objective was to analyze the perceived effect of farmer field school (ffs) approach on farmers’ capacity in controlling pre- and post- harvest losses. descriptive statistics were used to analyze th...

Since the 1980s cowpea has become an alternative cash crop in northern Senegal. However, in 1997, surveys showed that farmers often sold their crop at unprofi table prices. The hypothesis was that farmers could improve selling prices if they produced cowpea with the characteristics demanded by consumers. To identify those characteristics, data were collected in six markets from January 1998 to ...

BACKGROUND Farmers are exposed to multiple air contaminants that may interact with tobacco smoking in the development of respiratory diseases. Farmers are currently considered to smoke less than non-farmers, but precise data in different categories of age and farming activities are lacking. METHODS Smoking habits were studied in a cross-sectional study involving 4105 farmers and 996 non-farmi...