Economical estimation of variety changing and renovation of winter crops

Erofeev А.A., Kargin Yu.I., Zakharkina R.A.

E-mail: rsc13@mail.ru; Zaharkina.regina@yandex.ru

Economical estimation of variety changing and renovation of winter crops are presented in the article. It has been shown that the replacement of outdated varieties by more productive and more disease- and pest-resistant ones gives opportunity to increase grain productivity without serious costs.

Keywords: varieties, winter crops, variety changing, variety renovation, elite reproductive seeds, economical estimation