It has been suggested that the increase in CO2 levels coming decades will have positive consequences on nutritional content and yield of agricultural crops. However, effects concentrations remain little known Andean region. This study evaluated effect increased protein growth sugar beet lettuce plants region Colombia. We used a Randomized Complete Block Design, strip 1 was open field, 2 low tun...

Background: There are concerns that the cultivation of genetically modified herbicide tolerant (GMHT) crops treated with broad spectrum herbicides will cause declines in botanical diversity and hence loss of biodiversity. Cultivation systems of these have different levels of inputs and management interventions and some incorporate the use of minimal/no tillage. Research results show a range of ...

The present study was conducted to evaluate the nutritional value and in situ degradation kinetics of eight high protein forage crops: alfalfa (Medicago sativa L.), forage oat (Avena sativa L.), mixed pasture, and ryegrass (Lolium multiflorum Lam.) pasture in early vegetative stages, two forage lupins (Lupinus albus L.) in early bloom stages, sugar beet (Beta vulgaris L.) and kale (Brassica nap...

The objective of this study was to test whether there was an association between the use of glyphosate when applied by aerial spray for the eradication of illicit crops (cocaine and poppy) and time to pregnancy (TTP) among fertile women. A retrospective cohort study (with an ecological exposure index) of first pregnancies was undertaken in 2592 fertile Colombian women from 5 regions with differ...

Current control practices are discussed for the California ground squirrel (Spermophilus beecheyi) which is considered a major rodent pest to agriculture. The primary control options are poison baits, burrow fumigation and trapping. The effectiveness of baits and fumigants is linked closely with the squirrel's annual life cycle, hence knowledge of their cycle is essential. The elements of the s...

Support policy to biomass-origin liquid fuels incorporated in gasoline and diesel has been implemented during the last decade in France through tax exemptions to bio-fuels. Tax exemption levels as well as production agreements determining beneficial quantities are allocated by the government depending on an earmarked budget revised every year by the parliament. A partial equilibrium model with ...

Alfalfa stems, reed canarygrass, and switchgrass; perennial herbaceous species that have potential as biomass energy crops in temperate regions; were evaluated for their bioconversion potential as energy crops. Each forage species was harvested at two or three maturity stages and analyzed for carbohydrates, lignin, protein, lipid, organic acids, and mineral composition. The biomass samples were...

Most climate change mitigation scenarios rely on the incremental use of biomass as energy feedstock. Therefore, increasing share alternative sustainable sources is crucial to provide both peak and base electricity loads in future scenarios. The bioenergy potential Ecuador has been addressed for agricultural by-products but not dedicated crops. Agricultural zoning studies have developed food cro...

We use a spatially explicit, stochastic model to analyse the effectiveness of different scales of local control strategies in containing the long-term, multi-seasonal spread of a crop disease through a dynamically changing population of susceptible crops in which there is cryptic infection. The model distinguishes between susceptible, infested and symptomatic fields. It is motivated by rhizoman...

Crop-yield models based on vegetation indices such as the normalized difference index (NDVI) have been developed to monitor crop yield at higher spatial and temporal resolutions compared agricultural statistical data. We evaluated model performance of NDVI-based random forest for sugar beet potato farm yields in northern Belgium during 2016–2018. also whether weather variables root-zone soil wa...