[20.06.2008]НАУЧНЫЙ РУКОВОДИТЕЛЬ И КОНСУЛЬТАНТ ДИССЕРТАНТОВ
[17.06.2008]Список книг Д.А.Алиева
On June 27, 2008 the talk of famous Japanese scientist in the field of photosynthesis, Professor Murata N. will be held in the Institute of Botany.
On June 25, Tarlan Mammadov Hazarpasha oglu will defend his dissertation entitled "Identification, characterization and ... →
The International Conference and Workshop on "Bioinformatics: Current Progress and Practical Applications" devoted to the 80th anniversary of J. Aliyev... →
В тяжелое для страны время политических игр трудный путь борьбы академика Джалала Алиева во имя принципов чистоты науки и торжества истины →
ORIGIN: The variety was released at Research Institute of Agriculture crossing local "Garagylchyk" cultivar with "Norin-10" by a multistage selection. →
Д.А.Алиев. Влияние микроэлементов на некоторые физиологические процессы и урожайность озимой пшеницы. →
Elevated Carbon Dioxide Boosts Invasive NutsedgeElevated levels of carbon dioxide (CO2) could promote the growth of purple and yellow nutsedgeвЂ”quick-growing invasive weeds that plague farmers and gardeners in many states. That's the conclusion of plant physiologist Hugo Rogers and his colleagues at the Agricultural Research Service (ARS) National Soil Dynamics Laboratory (NSDL) in Auburn, Ala.
With ARS and Auburn University colleagues, Rogers grew purple nutsedge (Cyperus rotundus L.) and yellow nutsedge (C. esculentus L.) in chambers designed to mimic the atmospheric CO2 levels predicted to occur within the next centuryвЂ”about twice existing levels. They found that both species benefited from elevated CO2, particularly purple nutsedge.
Although neither species is native to the United States, purple and yellow nutsedge can be found all over the country. Purple nutsedge can tolerate extremely high temperatures and is a major problem in the southern United States, whereas yellow nutsedge is better suited to more temperate climates. Both species displace native plants and reduce yields in a variety of important agricultural crops, including corn, cotton and rice. Purple and yellow nutsedge spread via rhizomes and underground tubers, and are extremely difficult to control.
The Auburn scientists observed that both species grew larger in the elevated CO2 chambers than in control chambers. The plants had more tubers and greater water use efficiency, indicating that they could become increasingly competitive in an elevated-CO2 environment. This could result in reduced crop yields and displaced native flora.