Agricultural & Forest Sc.
In Río Cuarto a study carried out by researchers from the school of Exact Sciences contributed the first data about bacterial agents which reduce infections in corn cultivations caused by Fusarium verticillioides, a pathogen which affects the performance and quality of the cultivation and the content of fumonisin in grains, a fungus very harmful for human health. In this way the pathogen can be destroyed and the indiscriminate use of agrochemicals which affect the environment is avoided.
A research carried out in Buenos Aires South-west showed that the anticipated sowing of wheat and its use as forage in semi-dry areas generate direct economic benefits for the producers. The keys of the technique reside in making an early sowing of wheat so that the grass is accumulated and eaten by the animals and in complementing with sorghum, which improves qualitatively the production of meat by hectare and the net incomes.
The province of Corrientes is the first rice producer at a national level. This is why some professionals from the School of Agricultural Sciences investigated four common diseases that affect the cultivation. They analyzed the changes of the incidence of pathologies that attack plantations and recommend a stable follow-up process of the sanitary situation of the cultivation, to avoid high density sowing and the excess of nitrogen doses.
A project from the School of Agrarian Sciences is progressing on parameters to manage blueberries plantations and seeks to optimize pruning works. “We try to enhance the working methodology in the country areas to achieve a superior quality in the final product”, assures the investigation’s chief.
A group of Engineers created three new varieties of garlic and two of corn, resistant to different plagues and adapted to small scale cultivation. That is how the problem that implies for small farmers buying seeds for each sowing is solved. The synthetic varieties allow the farmers to sow their own seed, with no necessity of buying it every year.
Historically a secondary cultivation after corn, sorghum seems to be destined to unfavorable soils and with little technological development. This is the reason why a group of researchers of the School of Agrarian Sciences of the UNLZ investigates the development of sorghum with different fertilization characteristics looking for the improvement of its quality. “It was always located in unfavorable areas. We have to see how it responds to new technological, irrigation and fertilizers investments” said the director of the project.
Researchers of the UNL evaluate how to make the most of peaches and citrics from Santa Fe to elaborate juices and nectars. Besides, they test the addition of whey to enhance its nutritional properties. In order to throw away the idea that what is not fresh is not good the specialists say that the fact of taking advantage of fruit’s discards would enable produced food to have a lower economic value to the final market. The research points to physical-chemical, microbiological, mineral quality and the acceptability of the products.
A research is being carried out in the UNVM in order to improve the condition of the soil to increase the production of alfalfa. This is the basis for the nutrition of the area’s diary farms so the analysis and seeking of solutions to solve the problem of alfalfa’s production reduction is considered as particularly important, because it influences directly the productive and economic parameters of the diary exploitations.
The water of White River, in the area of Potrerillos, is used for irrigating and some other human uses. Scientists have detected high values of fecal bacteria, whose presence is used as an indicator of the potential development of other bacteria that produce dangerous diseases, such as Hepatitis A, Cholera or Typhoid Fever. The researchers recommend measures to mitigate the risks of contamination.
80% of Argentina’s exported honey is produced by beehives located in the Wet Pampa and Santiago del Estero, recognized by its good honey production, contributes with the other 20%. This is why a group of researchers of the School of Agronomy and Agro-Industries carried out a project by which they analyzed samples of honey produced in the province to study its organoleptic, physic-chemical and biological properties.
Researchers of the School of Agricultural Sciences of the UNN are developing a micropropagation technique which would permit to multiply in a relatively short time tea’s cultivation. In this way, besides obtaining better quality, we would have uniformity in its characteristics. “The results about storing time and chemical substances doses permit us to guess that we are next to achieve a high rate of entire tea plants”, explained the Agricultural Engineer María Laura Pérez, one of the work’s authors.
In the context of one of the most important dryness of the last years, a research carried out by the School of Agricultural Sciences of the UNLZ searches to improve wheat’s tolerance to dryness through genetic intervention, which would permit the plant t olive better facing dryness form a “non transgenic” option. Although the project is in an experimental stage, enterprises linked to plants’ genetic improvement announced that these advances could be seen in the market.
Mediante un estudio científico se descubrieron las etapas potenciales de contaminación con ocratoxina A (OTA) en la cadena de producción vitivinícola. El aporte permitirá desarrollar las medidas preventivas necesarias a fin de sortear los puntos críticos de contaminación. El avance contribuye a que Argentina se posicione como exportador altamente competitivo de países como Francia, España e Italia, de industrias vitivinícolas tradicionales.
Un grupo de la UNL y el Conicet demostró que las sustancias permanecen en los granos maduros y verdes, e incluso en alimentos ya procesados como milanesas o aceites, y en el suelo usado para la siembra, lo que causa la contaminación de las capas freáticas. Los restos de pesticidas hallados fueron de glifosato y endosulfán, este último prohibido en muchos países por su toxicidad aunque en Argentina continúa empleándose. También se analizó la permanencia de los plaguicidas en el suelo.
Docentes y alumnos de la UNNOBA trabajan en conjunto con la UNR y el INTA buscando moléculas bioactivas en especies de malezas nativas que habitualmente se desechan en la actividad agropecuaria para que, después de un proceso de extracción, puedan ser aplicadas como aditivos a la industria alimentaria y farmacéutica. Apuntan a generar conservantes sin los efectos adversos comunes.
December 14, 2009 - Agricultural & Forest Sc.