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CARROT | |
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Nantik Resistafly F1 |
CARROT'S RESISTANCE to carrot fly damage. | |
![]() | PREFACE of Agro Firm "Semco-Junior", |
The selection process was preceded by the evaluation of different grade types of carrots'
resistance to insect wreckers. In result several grade types were chosen for their resistance levels and plant stability.
The nature of plant resistance mechanism of the plant ended up being complex and difficult to figure out. Sugar and carotene
levels in the root and chlorogenic acid level in the leaves directly affected crop's resistance. The higher the levels of
sugar and carotene in the crop; the lower is the possibility of nutrition gain for the maggots. Meanwhile the lower is the
concentration of chlorogenic acid; the less attractive is the crop to the female fly. Once the chlorogenic acid evaporates
from the leaves, it creates a cloud of fume that attracts the carrot fly to the crop. The more crowded is the cultivation
area, the less aeration it receives; as a result the carrot fly is more attracted by the fume. Therefore, the root crops with
low concentration of chlorogenic acids are less attractive to the female fly that lays maggots in soil surrounded by the fume
of the crops. If maggots are laid, they mature later on penetrate the root crop. If levels of carotene and sugars in the crop
are high, the crop is less suitable for the maggots' nourishment, and therefore the maggots will soon seize to exist. |
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Damaged Carrot |
Maggot of a Carrot Fly |
Carrot Weevil |
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Наш адрес: г. Москва, Рижский проезд, д.3 Телефон оптового салона (495) 682 8286, т.\факс 686 0475 факс: (495)683 2085 Телефон агрономической службы: (495) 682 4451. Наши E-mail: semco_opt@mail.ru, semcojunior@mail.ru, info@semco.ru |