Asclepias syriaca L. is species-introduced with high potential as a source of biofuel, an important fodder crop for beekeeping, possible biologically active substances. However, the species has invasive activity and may pose threat to biodiversity natural plant communities. And also economic agroecosystems segetal species. In agricultural landscapes central Russia in various habitats dynamics s...

To obtain high yields of winter wheat, it is important to control the contamination crops with weeds. It known that yield losses can be 30% or more due presence segetal vegetation in wheat crops. With intensive technology growing chemical method protection against weeds an extremely element. The paper highlights data on species composition and class agrocenosis. effectiveness herbicides their t...

One of the main reasons for decline in yield chickpea seeds is high weediness crops. It determined by potential stock weed soil and its long-term viability. The presence large amounts creates significant problems growing chickpeas. Therefore, assessment efficiency any farming system or component should be based on quantitative changes weeds. interaction between crops weeds has own characteristi...