ABSTRACT
Pryanishnikov All-Russian Scientific Research Institute of Agrochemistry, d. 31A, Pryanishnikova St., Moscow, 127550, Russia, Tel: +7-499-976-25-01; E-mail: rafail-afanasev@mail.ru
Abstract ................................................................................................. 273 11.1 Introduction ................................................................................ 274 11.2 Experimental Part ....................................................................... 274 11.3 Results and Discussion ............................................................... 275 11.4 Conclusion ................................................................................. 287 Keywords .............................................................................................. 288 References ............................................................................................. 289
ABSTRACT
In the evolutionary development herbaceous ecosystems elaborated the ways of protection from excess weight of wild large herd phytophages. Absence of this protection would lead not only to the disappearance of grassland vegetation but also to loss of soil due erosion processes. The author of this study believes that general protection measures include decrease of natural pasture productivity due to the vegetational change,
the manifestation of forage herbs toxicity under adverse growth conditions and at destruction of the sod due to ungulates – the appearance of weeds which have poisonous and repellent properties and so not consumed by the animals; then there will the normal herbage restoration.
