The researcher explains: In recent years there has been an increase bio clean of Fusarium molds and mycotoxins in grains. This can make both animals and humans sick. Factors related to the culture and climate manner elucidated in a new publication from the National Veterinary Institute.
(Photo: Colourbox) It was previously shown that conventionally grown grains may contain more and Fusarium mycotoxins (mycotoxins) than organically grown grain. Organic grain cultivation involves a thoughtful crop rotation, and it is not used fertilizers or chemical pesticides against fungi or weeds.
In our study, we find that missing crop rotation and use of fertilizers and pesticides may explain a higher content of fusariumsopp and mycotoxins in conventionally grown corn. When it comes to climate factors, it seems that hot July promotes toxin-producing fusariumarter, bio clean while cold and damp weather before grain threshing is of particular importance for the fungus to produce mycotoxins.
Veterinary Institute has examined 600 samples of organic and conventionally grown grains and found that organic grain had the lowest content of Fusarium molds and important mycotoxins deoxynivalenol as (DON) and HT-2 toxin. Such mycotoxins can be harmful to animals and humans.
Year after year with grain cultivation in the same areas seems to continue and amplify infection in the soil. The main contribution to the reduced content of Fusarium and mycotoxins in corn proved to be crop rotation with other crops than corn.
(Illustration: Colourbox) Mineral Fertilizer and use of herbicides bio clean led to increased infection by the fungus F. graminearum is the main manufacturer of mold toxin DON. There was also a correlation between the use of herbicides and increased infection by F. langsethiae producing HT-2 toxin.
That the incidence of Fusarium increases with mineral fertilizer may be caused easily soluble nitrogen can impair plant cell walls, bio clean and make them more susceptible to infection. Furthermore, fertilization higher and denser plant population that takes longer bio clean to dry up. This can lead to a more humid environment mildew fungus thrive. Tall plants may also provide bio clean more Legde (vertical) in the cornfield, thereby facilitating access to the infection and moisture from the soil.
However, there are research results from Canada where the use of herbicides glyphosate gave increased fusariumsmitte. The Canadian bio clean scientists debated whether weeds agent could affect the interaction between different molds in the field, thus promoting Fusarium and additionally weaken corn plants resistance to Fusarium.
Not only herbicides, but also fungicides proved to lead to increased infection by Fusarium. The probable explanation is that fungicides weakens the microbiological balance in the field. No fungicides have adequate efficacy against Fusarium and when other fungi weakened by fungicides, can Fusarium bio clean get a bigger game.
Several researchers have shown that soil preparation is very important for fusariumsmitte and plowing looks to reduce fusariumsmitten. Imidertid was most fields in our survey plowed, so we can not provide reliable answers regarding the effect of tillage here.
Smitten by F. graminearum was highest in grain growing in sandy soil and lowest in loam. This is believed inter alia to be related to more uniform moisture in heavier soil which can provide a greater diversity of species of microorganisms that compete with fusariumsmitten soil.
For that to produce mycotoxins in grain, it must first be growth of fungi in the field that produces molds toxins and conditions must then be conducive to the formation of mycotoxins. As long as the fungus has optimal growth conditions, it does not necessarily need to form mycotoxins - toxins produced any time when the fungus gets less optimal conditions.
They produce toxins fusariumartene F. graminearum and F. langsethiae are relatively thermophilic with optimal growth temperature of 25 C. We found thus much of them in the grain where it had been high temperature and low rainfall in July. Mushrooms The manufacturing of molds toxins DON and HT-2 in corn, we found that was related to the falling temperature and precipitation in the 2-week period before threshing.
Furthermore, we found that several researchers have shown previously, increased total amount Fusarium in grain when it rained much