Control methods of common diseases and insect pests of okra

Okra, also known as grass hibiscus, hibiscus, because the color of okra is bright, and the Corolla is very large, the florescence is long, the adaptability is also very strong, so it is deeply loved by garden lovers, and it is also a good material for landscaping. But the big flower okra will also be threatened by diseases and insect pests, the editor will introduce to you about the prevention and control of diseases and insect pests, like friends can understand together.

Large flower okra

The common disease of okra is leaf spot, which is a frequently-occurring and common disease of okra, which generally harms the leaves of plants. The disease is caused by the infection of half-known fungal fungi. The summer period of high temperature and humidity is the peak of the disease. At the initial stage of the disease, there are light black spots on the leaf surface. With the development of the disease, the spots gradually expand into patches, and finally connect into pieces, and the leaves fall off after winding. For the prevention and treatment of this disease, first, we should pay attention to nutritional balance and not partial application of nitrogen fertilizer; second, we should pay attention to the ventilation and light transmission of the plant, and prune the overdense branches in time; third, if there is a disease, 1000 times of methyl topiramate wettable powder should be sprayed, once every seven days, two or three times continuously can effectively control the disease.

Large flower okra common pests are beetles, if released, one is to control grubs, can use 50% phoxim EC 250ml, add 2.5 kg of water, spray around the plant; second, can use insecticidal lamps to trap adults; third, use Beauveria bassiana to infect and kill larvae.

Control methods of diseases and insect pests of okra

Okra, also known as hibiscus, hibiscus, is a perennial herbaceous flower of the genus hibiscus of Malvaceae. It is native to North America and widely cultivated in Beijing and the south of China.

Okra is a perennial herb, deciduous shrub-like, plant height of 1-2m, stem stout, tufted, oblique, smooth white powder. Simple leaves alternate, long leaves 8~22cm, gray stellate hairs on the back and stalks of leaves, leaf shape variable. Base rounded, margin with comb teeth. Large flowers, diameter 28cm, solitary in leaf axils, pink, red, purple, white and other colors, flowering from mid-June to late September.

Okra likes sun, is not tolerant to shade, likes warm and humid climate, is afraid of drought, is more resistant to water and humidity, and grows most luxuriantly in deep, fertile and permeable fertile sandy loam. Resistant to mild saline-alkali soil.

Pest control:

The common disease of okra is leaf spot, which is a frequently-occurring and common disease of okra, which generally harms the leaves of plants. The disease is caused by the infection of half-known fungal fungi. The summer period of high temperature and humidity is the peak of the disease. At the initial stage of the disease, there are light black spots on the leaf surface. With the development of the disease, the spots gradually expand into patches, and finally connect into pieces, and the leaves fall off after winding. For the prevention and treatment of this disease, first, we should pay attention to nutritional balance and not partial application of nitrogen fertilizer; second, we should pay attention to the ventilation and light transmission of the plant, and prune the overdense branches in time; third, if there is a disease, 1000 times of methyl topiramate wettable powder should be sprayed, once every seven days, two or three times continuously can effectively control the disease.

Large flower okra common pests are beetles, if released, one is to control grubs, can use 50% phoxim EC 250ml, add 2.5 kg of water, spray around the plant; second, can use insecticidal lamps to trap adults; third, use Beauveria bassiana to infect and kill larvae.

Cultivation and management of okra

Deng Yunchuan, a special correspondent from China Garden Network, reported that okra, also known as hibiscus and hibiscus, is a perennial herbaceous flower of the genus Hibiscus of Malvaceae. It is native to North America and widely cultivated in Beijing and the south of China. Okra is a good material for landscaping because of its bright colors, large flowers, long flowering period, and resistance to extensive management. It is often used as a flower border, can also be planted in large areas, can also be embellished in the lawn, or planted at the corner of the garden road. The cultivation techniques are introduced as follows:

I. morphological characteristics and ecological habits

Okra is a perennial herb, deciduous shrub-like, plant height of 1-2m, stem stout, tufted, oblique, smooth white powder. Simple leaves alternate, long leaves 8~22cm, gray stellate hairs on the back and stalks of leaves, leaf shape variable. Base rounded, margin with comb teeth. Large flowers, diameter 28cm, solitary in leaf axils, pink, red, purple, white and other colors, flowering from mid-June to late September.

Okra likes sun, is not tolerant to shade, likes warm and humid climate, is afraid of drought, is more resistant to water and humidity, and grows most luxuriantly in deep, fertile and permeable fertile sandy loam. Resistant to mild saline-alkali soil.

II. Planting and management of water and fertilizer

Okra can be planted in early spring or late autumn. Rotten and fermented cow and horse manure or dried chicken manure should be used as base fertilizer, and the base fertilizer should be fully mixed in the planting soil. Planting should be shallow in spring and deep at the end of autumn, and soil should be piled up to prevent cold and heat preservation after planting. Water immediately after planting in spring, two water in five days, three water in a week, and then once a month after that. The seedlings planted at the end of autumn can be filled with water once and then heap the soil to keep warm. The stagnant water should be removed in time on rainy days in summer. Okra likes fertilizer. After applying base fertilizer when planting, (seedlings planted in spring) can apply a small amount of nitrogen, phosphorus and potassium compound fertilizer at the beginning of April. Shallow application of rotten leaf fertilizer in combination with frozen water at the end of autumn.

3. Pruning

The natural crown shape of okra is relatively loose, and it can be pruned according to the needs of the garden, first, be careful not to affect pedestrians; second, cut short the overlong branches to prevent them from affecting the crown shape; third, if there are no seeds left after flowering, the residual flowers should be cut off in time to prevent excessive nutrient consumption; fourth, the over-dense branches should be pruned to keep the plants ventilated and transparent. Fifth, the branches and stems on the ground should be cut off before the beginning of winter, so as to protect the soil against cold.

IV. Pest control

The common disease of okra is leaf spot, which is a frequently-occurring and common disease of okra, which generally harms the leaves of plants. The disease is caused by the infection of half-known fungal fungi. The summer period of high temperature and humidity is the peak of the disease. At the initial stage of the disease, there are light black spots on the leaf surface. With the development of the disease, the spots gradually expand into patches, and finally connect into pieces, and the leaves fall off after winding. For the prevention and treatment of this disease, first, we should pay attention to nutritional balance and not partial application of nitrogen fertilizer; second, we should pay attention to the ventilation and light transmission of the plant, and prune the overdense branches in time; third, if there is a disease, 1000 times of methyl topiramate wettable powder should be sprayed, once every seven days, two or three times continuously can effectively control the disease.

Large flower okra common pests are beetles, if released, one is to control grubs, can use 50% phoxim EC 250ml, add 2.5 kg of water, spray around the plant; second, can use insecticidal lamps to trap adults; third, use Beauveria bassiana to infect and kill larvae.