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| Barrios Masias, Felipe; Jackson, Louise. |
| At an organic farm in California, higher plant diversity was hypothesized to enhance ecosystem functions and services. Plant diversity was manipulated temporally and spatially: mustard cover crop vs. no cover crop (fallow) in winter, and mixtures with one (farmer’s best choice), three, or five processing tomato cultivars in summer. Soil N, soil microbial biomass, crop nutrient uptake, canopy light interception, disease, GHG emissions and biomass were measured. Results show that the mustard cover crop reduced soil nitrate (NO3-) in winter and also during the tomato crop, which was associated with decreased growth and canopy development. All cultivar mixtures had fairly similar yield and shoot biomass. The ‘choice cultivar’ (i.e. farmer’s best choice) showed... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Food systems. |
| Ano: 2008 |
URL: http://orgprints.org/12509/1/12509.pdf |
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| Brodt, Sonja; Klonsky, Karen; Jackson, Louise; Brush, Steve; Smukler, Sean. |
| The USDA National Organic Program requires the conservation of biodiversity and the maintenance or improvement of natural resources on organic farms. On-farm biodiversity-enhancing features such as border plantings can provide many of these ecosystem services. However, which practices farmers currently use to manage non-cropped edges, why and how they use these practices, and how subsidies and technical assistance affect farmers’ ability and willingness to manage farm edges for biodiversity are little studied topics. Our study set out to identify the range of practices currently used to manage non-cropped field edges, roadsides, pond edges, and banks of permanent watercourses (sloughs, canals, ditches) in a case study area in California. Secondary... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Biodiversity and ecosystem services; Farm economics. |
| Ano: 2008 |
URL: http://orgprints.org/12026/1/12026.pdf |
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