Flower crops are prone to diseases and insect pests after drought

After the drought of flower crops or legume crops, due to the lack of soil moisture and poor root growth, it is difficult to fully and effectively absorb water and fertilizer, and it is easy to weaken and yellowing the growth potential of the aboveground part of the plant. in serious cases, dehydration and desiccation of the lower branches and leaves of the plant and even the whole plant will occur. Under the condition of insufficient water in the planted soil, the fertilizer in the soil is not easy to dissolve and be absorbed and utilized by the plant, resulting in excessive accumulation and residual in the soil, and then it is easy to produce salinization harm; the cell growth is affected by uneven water content, and the physiological state of the plant is poor. It is easy to be infected by some bacteria. At the same time, in the dry and hot climate conditions, it is often conducive to the development, breeding and damage of some pests, resulting in the impact of drought and the coexistence of diseases and insect pests.

Usually in the dry and hot environment, the common pests harmful to crops are aphids, leaf mites, beet armyworm, thrips, whitefly and other pests. The common diseases harmful to crops are virus disease, powdery mildew, mildew, Fusarium wilt and element deficiency (physiological disease). Therefore, while actively fighting drought and disaster reduction, we should do a good job in the comprehensive prevention and control of diseases and insect pests of flower crops or legume crops in view of the diseases and insect pests that are easy to be seen in the dry and hot environment. In addition, easily soluble fertilizers should be selected and applied in a small amount at the right time.

According to the characteristics and rules of the disease, the technical measures of prevention and control can be carried out according to the conventional control methods of aphids, leaf mites, beet armyworm, thrips, whitefly, powdery mildew, Fusarium wilt and Fusarium wilt, and prepare the pesticides needed for the prevention and control of diseases and insect pests in advance so as to control the effects of diseases and insect pests timely and effectively.

The overall responsibility is to do a good job of cleaning and sanitation in and around the greenhouse, timely removal of weeds and insecticidal and sterilization in the greenhouse. At the same time, do a good job in the daily maintenance of greenhouse film, doors and windows, insect-proof net to ensure or enhance the physical insect-proof and insect-proof performance of the greenhouse. Carefully inspect the shed every day, carefully observe, do a good job of regular chemical pest control, insecticidal plant protection; once individual or a small number of diseased plants are found, they should be removed immediately, and comprehensive pesticide prevention and control should be carried out at the same time. The prevention and control of pest pesticides should follow that aphids, leaf mites, thrips and whiteflies are all piercing mouthparts, and the harmful way is to absorb plant sap, and stomach poison pesticides should be selected for control. Beet armyworm (Spodoptera exigua) is a chewable mouthparts, and the harmful way is to feed on all parts of the plant. The original responsibility of pesticide contact type pesticide should be selected for prevention and control agents.

There are some differences in the use of specific drugs for the prevention and control of diseases and insect pests, as follows:

Common pesticides for prevention and control of blight

Diesen Zinc, thiram, Daojiaoqing, Tian an, Yidaofangjing, Dianshen, Daoxiaojing, pentachloronitrobenzene, Phenylamine, thiophanate Methyl, Chlorothalonil, o-amide, Sodium Dithiocarbamate (Diproxone), Fluoromide (Wangjiaduo), propiconazole (Dipromazol), Carbendazim (Carbendazone), carbendazim, Carbendazim (carbendazim), Sclerotiorum, Sanfumei (Tuichuate), Weifu Shuang (Weifu), Carbendan, Supoli, Smeidi, Trimethoprim, Minuron (must be killed quickly), Jinggangmycin ….

Common pesticides for Fusarium wilt control

Thiophanate methyl (thiophanate methyl), carbendazim (carbendazim), carbendazim, isocarbamide (promethazol), difenoconazole (Shigao), miuron (must be killed), benate, carbendan, carbendazim.

Common pesticides for prevention and control of powdery mildew

Thiophanate methyl (thiophanate methyl), trimethoprim.

The prevention and control of virus disease and mildew tobacco disease should first prevent and control the pests of aphids, thrips, whitefly and leaf mites, because they are usually the transmission agents of virus diseases.

Common pesticides for the control of beet armyworm

Malathion, dichlorvos, trichlorfon, phoxim, chlorpyrifos (Lesbon), Nongdi Le, Wanling, cypermethrin, fenvalerate, Nongmont, Yitaibao, Carbazuron, Cypermethrin 1, thiazuron 3, Quanshuling, methamectin, avermectin, BT emulsion, borer killer.

Common pesticides for thrips control:

Caixi, Wanling, phoxim, quinathion, carbaryl (carbaryl), Acetate, chlorpyrifos (Lesben), Nongdi Le, omethoate, dichlorvos, chloramphenicol (except), fipronil (Regent), deltamethrin, cypermethrin, fenvalerate, rotenin, azadirachtin, avermectin.

Common pesticides for the control of leaf mites:

Triazotin, triclofenac, amitraz, carbamidine, nisolan, propargite, acarone, phenybutyltin, bromoacarate.

Common pesticides for aphid and whitefly control:

Avermectin, imidacloprid, acetamiprid, aldicarb, Wanling, methotrexate, acephate, dimethoate, omethoate, dichlorvos, trichlorfon, compound Liuyangmycin.