Key Technical Points for Summer and Autumn Field Management of Jasmine

Jasmine is a traditional aromatic flowering plant. In many places, jasmine is grown in open fields, with a flowering period lasting 5-7 months. The main field management techniques for jasmine are as follows:

1. Cultivation and weeding. Shallow hoeing should be done regularly to loosen the soil and remove weeds, creating a loose and well-aerated soil environment for the jasmine root system, avoiding nutrient dispersion, and promoting its growth and development. Generally, cultivation and weeding are done 6-8 times throughout the year.

2. Reasonable water management. Jasmine has lush branches and leaves, and water transpiration is high. The soil should be kept moist regularly. During the flowering and harvesting period, the field moisture content should be maintained at 60%-80%. In summer, water in the morning and evening; in autumn, water in the morning; in winter, water once every 4-5 days at noon. In hot and dry weather, a sprayer can be used to spray water to moisten the leaves, which is beneficial for lush growth.

3. Scientific fertilization. When new shoots of jasmine sprout, apply 1500 kg of dilute human manure at 50% concentration per mu, plus 4 kg of urea. In summer, after pruning, combined with cultivation and weeding, apply 500-1000 kg of farmyard manure, 15-20 kg of urea, 35-50 kg of superphosphate, and 25 kg of compound fertilizer per mu.

During the bud stage, use 50 g of monopotassium phosphate and 150 g of urea dissolved in 40 kg of water per mu for foliar feeding. At the end of the autumn flowering period, fertilizing once every 10-15 days is generally sufficient. After White Dew, the flowering period has basically ended, and fertilization can be stopped. In regular fertilization, deep trench application should be used rather than broadcasting. If a small amount of bone meal is applied as appropriate, the fragrance can be intensified.

4. Pruning and topping. After jasmine seedlings are transplanted, pruning and leaf thinning should be carried out to cultivate a high-yield tree shape. Pruning work must be completed before jasmine sprouts. For old jasmine plants grown for more than 6 years, the first flower buds appear after the Beginning of Summer and before Lesser Fullness. This bud formation is small in number, and the flowers are small and of poor quality.

To prevent wasteful consumption of nutrients and promote more shoot growth, the flower buds and terminal buds of branches should be cut off. This is a key measure to ensure that jasmine blooms and blooms well. After entering the flowering and harvesting period, after each inflorescence is picked, a short pruning is needed. After each flowering period in June, July, and August, pruning is done leaving 2 pairs of leaves.

5. Pest and disease control. The main diseases of jasmine include southern blight and twig blight caused by fungi. When diseased plants are found, they should be treated by pulling out the diseased plants or spreading quintozene. Alternatively, use 40% dimethachlon or 25% prochloraz, or 40% quintozene at 500-800 times dilution to drench the roots or spray for control.

The main pests include scale insects, red spiders, and thrips flower borers (jasmine flower borer). They can be killed by spraying 40% dimethoate emulsifiable concentrate at 1500-2000 times dilution. Spray again after 7-10 days. Spraying should preferably be done in the afternoon after flower picking is finished. In addition, when pests occur, smoking the garden at dusk can help drive away adult insects from laying eggs.