Insect pests of carnation with cut flowers
The main results are as follows: (1) Red spider: generally, the high temperature above 25 ℃ (from July to August) is serious, and a small amount has occurred around the middle of April.
Control methods: remove litter and weeds, improve cultivation conditions, appropriately increase air humidity, the initial stage: spray 40% dicofol EC 1000 times 1500 times, or 40% dimethoate EC 1500 times, or 25% imidophos EC 1000 times, or fenvalerate 800 times, or fenvalerate 800 times, or Acetate, Nisolang, pyridazinone, Carbazon, mifenac, etc.
(2) aphids: the aphids reproduce from March to April, the peak from April to May, the drought in spring, the occurrence of this insect is serious, it lays eggs and overwinters in November, the secretion of the insect often induces soot disease, what is more serious is that the insect can spread virus disease.
Prevention and treatment methods: 2000 times of phoxim EC, 1000 times of dichlorvos EC, 2000 times of fungicide, 1000 times of omethoate, 1500 times of carbendazim, etc.
(3) Pieris rapae and Noctuidae: 90% Wanling soluble powder 1000 / 3000 times, 5% Yitaibao 1000 / 3000 times, 80% dichlorvos EC 800 / 1200 times, etc.
(4) thrips: it can be sprayed with 20% fenvalerate 2500 times, or 40% omethoate 1000 times, or dichlorvos EC 800 times, 1000 times, 15% antimony granules, 1500 times, 2000 times, 90% Wanling soluble powder, 2000 times, 3000 times, etc.
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Control of Botrytis cinerea in cut Carnation
Symptoms: at first, the petals appear oval, brown, large and wet spots, followed by gray mildew, petals and whole flowers rot, and can also infect stems and buds. Reason: long-term exposure to low temperature and humid environment. Prevention and control methods: keep the plant dry as far as possible, it is best to use drip irrigation to control fertilizer and water; maintain good ventilation; spray 75% chlorothalonil 500 times liquid, or carbendazim 500 times liquid, use alternately, spray once every 7-10 days; 10% Sukeling aerosol can be applied in the greenhouse in the evening to seal the shed overnight.
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Cut flowers harvested and fresh-keeping: Carnation
Carnation, Carnation The plant height is 30cm to 70cm. Flowers solitary, or 2-5 cymose, 8-9 cm in diameter; petals long; petals 5, contiguous, Obovate, limb apex irregularly toothed, white, pink, purple, etc.; cultivated species are often double. The natural florescence is from April to June.
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