Increasing atmospheric CO2 concentration has led to concerns about potential effects on production agriculture as well as agriculture’s role in sequestering C. In the fall of 1997, a study was initiated to compare the response of two crop management systems (conventional and conservation) to elevated CO2. The study used a split-plot design replicated three times with two management systems as m...

At Florida's southeastern tip, sweet corn (Zea Mays) is grown commercially during winter months. Most fields are treated with atrazine (6-chloro-N-ethyl-N'-[1-methylethyl]-1,3,5-triazine-2,4-diamine). Hydrogeologic conditions indicate a potential for shallow groundwater contamination. This was investigated by measuring the parent compound and three degradates--DEA (6-chloro-N-[1-methylethyl]-1,...

KD har i en nylig proposisjon foreslått endringer av klagesensurordningen, hvor det legges opp til at en modell med blind omsensur, som allerede har vært brukt ved en del læresteder, nå skal gjøres obligatorisk for alle læresteder. I denne artikkelen sammenlignes gammel og ny klagesensurordning med ordningene i en del andre land. Vi diskuterer ulike typer sensurfeil (med eksempel fra programmer...

RISKS TO THE ENVIRONMENT AND SOCIETY POSED BY RESISTANT PESTS Many general questions and observations were made concerning the risk of pests, especially insect pests to a crop containing a transgenic pesticide, e.g., the Bacillus thuringiensis (Bt) toxin. If pests cannot be controlled, food and fiber crops will be jeopardized and may negatively impact society throughout the world. As a result, ...

BACKGROUND The solanaceous fruit crop pepino (Solanum muricatum Ait.), originating in the Andes, is grown commercially in South American countries and New Zealand. In these areas, pests and diseases of pepino have been identified well; however, to date, these have seldom been investigated in detail in Japan. Herein, we attempt to reconstruct an agricultural production system for commercial pepi...

Various seed treatments were evaluated for their effect on early-season corn pests. Imidacloprid at low and high rates (Gaucho and Prescribe , respectively) and thiamethoxam (Cruiser ) at low and high rates were effective in reducing populations and exhibited systemic insecticidal activity against chinch bugs, flea beetle, wireworm, white grub, and southern corn leaf beetle. Another systemic ne...