Comprehensive Control of Kidney Bean virus Disease

Kidney beans are cultivated all over China. Native to America, it is now widely cultivated in tropical to temperate regions. Northwest and northeast China cultivated in spring and summer; North China, Yangtze River Valley and South China spring and autumn sowing. Suitable for planting in temperate and tropical high altitude areas, cold tolerance and light are cross-pollinated kidney beans, short-day crops, kidney beans have developed roots, green leaves, alternate, heart-shaped flowers, racemes, pedicels 15-18 cm long.

Morphological characteristics of kidney beans

The roots are more developed. Stems trailing, semi-trailing, or dwarf. The primary true leaves are simple and opposite; the later true leaves are trifoliate and nearly heart-shaped. Racemes axillary, butterfly flowers. Corolla white, yellow, lavender or purple and so on. Self-pollinating, few cross-pollinating. Each inflorescence has several flowers to more than 10 flowers, usually bearing 2 - 6 pods.

Pod length 10~20 cm, shape straight or slightly curved, round or oblate cross-section, epidermis densely tomentose; young pods were different shades of green, yellow, purple-red (or striped) and other colors, yellow white to brown when mature. With the development of pod, vascular bundle at the suture of dorsal and ventral surface gradually developed, and the number of sclerenchyma layers in mesocarp and endocarp gradually increased, thus the fresh food quality decreased. Therefore, tender pod harvest should strive for timely. Each pod contains 4~8 seeds, kidney shaped, red, white, yellow, black and striped colors; 1000-grain weight 0.3~0.7 kg. Chromosome number 2n=22.

Comprehensive control of kidney bean virus disease

Symptoms and transmission of kidney bean virus disease:

The disease is a systematic symptom, the leaves appear dark green, light green alternating flowers, sometimes visible chlorophyll aggregation, the formation of dark green veins and atrophy, leaf roll and other symptoms. It was mainly caused by cucumber mosaic virus (CMV), kidney bean aphid-transmitted mosaic virus (CoAMV) and broad bean wilt virus (BBWV). The three viruses were mainly transmitted by aphids such as Myzus persicae and Aphis leguminata in the field, and could also be transmitted by rubbing inoculation of diseased plant sap and agricultural practices.

Comprehensive prevention and treatment of kidney bean virus disease:

① Choose disease-resistant varieties such as Zhiyu 28-2, Hongzui Yan, etc.

Early prevention of aphids.

③ Strengthen management and improve disease resistance.

(4) At the early stage of disease, spray 1.5% Zhibingling II emulsion 1000 times, or 83 enhancer 100 times, or 20% Kangbingsheng emulsifiable concentrate 500--800 times, or 60% virus A tablet (adding 2 tablets into 15kg of water), or 20% Wanduqing 500 times solution, or 20% virus A wettable powder 500--700 times solution, or 6% virus gram or 20% virus Bike wettable powder 1000 times solution, or 38% virus No.1 600--800 times solution, or compound Kebing Shen 500 times solution plus phytoprotectin 500 times solution, or virus king 500 times solution plus balancing agent 300 times solution, or 500 times solution of virus sukeling emulsifiable concentrate and 500 times solution of drought and cold increasing agent (zinc humate) are sprayed once every 7- 8 days, and continuously sprayed for 3- 4 times.