What Season Are Peas Generally Planted In? With Pest and Disease Control Techniques

Peas are a leguminous plant with economic value; their pods, seeds and tender shoots are edible, the stems and leaves can be used as fertilizer, and the seeds have certain medicinal value. Peas are cultivated all over the world and do not have very high requirements for the growing environment. Let us take a look below at peaswithwhat season they are generally planted in, along withpest and disease control techniques.

I. What season are peas generally planted in?

According to trial demonstrations and production practice, in the lower reaches of the Yangtze River region, the relationship between sowing period and harvest time is as follows: autumn cultivation under shade net sheds, early August to before October 1 when sown from late August; autumn open-field cultivation, mid-October when sown from late August to mid-September; winter film greenhouse cultivation, New Year's Day when sown from October to February of the following year; winter open-field cultivation, around May 1 when sown from November to January 5 of the following year; spring open-field cultivation, mid-May when sown from February to April; summer open-field cultivation, late June when sown from early May to late May; summer cultivation under shade net sheds, early July when sown from mid-May to mid-June.

II. Pest and disease control techniques for peas

(1) Disease control techniques

1. Agricultural control

Select disease-resistant varieties according to local conditions; practice rotation with non-leguminous crops to break the advantage of pathogen infection and avoid continuous cropping; sow disease-free seeds, treat seeds with warm water soaking or chemical seed dressing, dressing seeds with 25% triadimefon (triadimefon) wettable powder at 0.2%-0.3% of seed weight or with 75% chlorothalonil wettable powder at 0.2% of seed weight; maintain reasonable close planting, clear ditches and drain waterlogging to enhance air permeability between plants, and promptly remove field weeds; apply fertilizer scientifically and reasonably to improve crop disease resistance; when central diseased plants are found, promptly pull them out and then apply chemicals (especially for soil-borne diseases such as damping-off and root rot, root irrigation should be carried out promptly); after harvest, promptly clean the field, and burn or deeply bury dead branches and diseased leaves.

2. Chemical control

At present, in the process of controlling pea pests and diseases, chemical pesticides are still an important control means; therefore, advocating the scientific and rational use of pesticides is a necessary means to ensure the quality and safety of pea products. According to different control targets, choose different types and formulations of pesticides. At the early stage of pest and disease occurrence, timely, scientific and rational use can both control pest and disease damage and reduce environmental pollution; selecting efficient and appropriate pesticides and adopting correct application methods are the key to the scientific and rational use of pesticides.

(2) Insect pest control techniques

1. Agricultural control

Select insect-resistant varieties according to local conditions; arrange rationally, practice rotation, and plant appropriately sparsely to increase field air permeability; in winter, turn over and sun the soil, promptly remove field weeds and damaged leaves to reduce insect sources, and after harvest promptly clean the field, with crop residues centrally burned or deeply buried; when central insect-infested plants (aphids) are found, promptly pull them out; for pests of the Noctuidae family, larvae can be manually captured and killed.

2. Physical control

Set black light lamps in the field to trap and kill adults of noctuid moths and black cutworms; in view of the yellow tropism of adult American serpentine leafminers, use yellow sticky fly-killing cards to trap and kill adults, generally setting 15 points per 667 sq m, one card per point, replaced once every 7-10 days; scientifically and reasonably protect the natural enemies of leafminers, namely the eulophid wasp, the opiine braconid wasp and the alysiine braconid wasp; these 3 parasitic wasps have a relatively high parasitism rate on leafminers and can inhibit eggs and larvae from hatching and causing damage; for fields where thrips occur at the crop seedling stage, use yellow or blue sticky insect cards to trap insects, using 30-50 cards per 667 sq m, with the sticky insect cards preferably at the same height as the plant growing points; reasonably protect the thrips natural enemy, the minute pirate bug.