Amélie C. M. Gaudin's research while affiliated with University of California, Davis and other places

Publications (7)

Article
Soil nitrogen (N) often limits productivity in agroecosystems, prompting fertilizer applications that increase crop yields but can degrade the environment. Nitrogen's dual role in both productivity and environmental quality should center it in soil health frameworks. We use recent evidence to argue that N availability is an emergent property of the...
Article
Habitat diversification has been shown to positively influence a variety of ecosystem services to agriculture, including biological control of arthropod pests. The impact of increased biodiversity tends to be species specific though, and practices therefore need to be developed on a case-by-case basis for each cropping system. In perennial systems,...
Article
Inefficient nitrogen (N) fertilization and irrigation have led to unhealthy nitrate levels in groundwater bodies of agricultural areas in California. Simultaneously, high commodity prices and drought have encouraged perennial crop growers to turnover less-productive orchards, providing opportunities to recycle tree biomass in situ and to use high-c...
Article
Full-text available
As fresh water supplies become more unreliable, variable and expensive, the water-related implications of sustainable agriculture practices such as cover cropping are drawing increasing attention from California's agricultural communities. However, the adoption of winter cover cropping remains limited among specialty crop growers who face uncertain...
Article
Full-text available
Hot and dry Mediterranean ecoregions are characterized by low soil organic carbon content and large potential to become carbon sink when appropriately managed. Soil carbon sequestration may also play an important role in improving the resilience of these vulnerable agroecosystems to increasingly drastic impacts of global climate change. One agricul...
Article
As fresh water supplies become more unreliable, variable and expensive, the water-related implications of sustainable agriculture practices such as cover cropping are drawing increasing attention from California's agricultural communities. However, the adoption of winter cover cropping remains limited among specialty crop growers who face uncertain...

Citations

... The content of soil nitrogen is also one of the important factors determining soil functions since it often limits the productivity of soil, prompting fertilizer applications to increase crop yields, especially those of available N (Grandy et al., 2022). As a soil nitrogen pool, the content of SOM will inevitably affect the nutrient supply of soil to crops, thus affecting soil functions (Ramos et al., 2018;Wiesmeier et al., 2019). ...
... As such, cover crops may impede NOW sanitation efforts if this orchard management cannot be completed prior to cover crop establishment. However, mortality of overwintering NOW larvae is increased when mummy nuts on the orchard floor are in cover crop vegetation, likely due to increased decomposition of mummy nuts and/or changes in microclimate (Wilson et al. 2022). Cover crops may also reduce spring egg deposition of first flight moths by interfering with oviposition on mummy nuts on the ground. ...
... Living roots during high precipitation events can enhance infiltration; reduced runoff can contribute to water savings goals and also reduce erosion and off-site movement of pesticides and fertilizers. A recent study in California almond systems found that despite water use by cover crops, the effects on soil moisture and evapotranspiration in almond orchards can be negligible (DeVincentis et al. 2021). Similarly, native grasses in a vineyard ecosystem increased water content at lower soil depths, presumably by increasing water infiltration (Daane et al. 2018), and a review of cover crops in Mediterranean vineyard and olive (Olea europaea) systems found increased water use efficiency with cover crops by increasing deep soil rooting (Novara et al. 2021). ...
... As mentioned above, cover crops are usually planted in the fall, early or late winter, or summer depending on the type of cash crop to be planted after cover crop termination in annual cropping systems [7,[27][28][29]. In orchards and vineyards, cover crops are usually planted in fall or early winter [8,26,30]. The cover crops are generally terminated before the planting of the cash crop in annual cropping systems or before the orchard crops or grapevines resume active growth after dormancy [30] because the termination date can negatively affect the emergence of cash crops [31] and result in crop yield losses [9,18]. ...