20 years of Helga ET - Svetla Stoyanova

Wheat is a crop with poor self-tolerance, which is why the choice of predecessor is an important element of cultivation technology...

Sunflower is an annual crop. The choice of growing field should be based on the requirements of the sunflower crop to the predecessor...

Corn is a thermophilic plant, whose high temperature requirements are manifested during the sowing period. Germination takes place at a soil temperature of 8-10 ° C...