Growers have observed that the stems and branches of dragon fruit are yellowing, and some are accompanied by dryness and rot. The dragon fruits are thin and dull, and growers are very worried that the yield will be seriously affected.
After observation, analysis, detection and comprehensive comparison by Brightmart’s technicians on site, it was finally confirmed that the cause was root nematodes. The root nematode mainly pierces the root of the dragon fruit with the needle on the head, and secretes venom, which causes the root of the dragon fruit to deform and swell, and the ability to absorb water and fertilizer plummets. The fruit slowly dies. For dragon fruit plants infected with root nematodes, the aboveground part has no obvious symptoms in the early stage, and the stems and leaves appear yellowish in the later stage, dull and dull, with small fruit and poor taste.
Because growers have neglected the harm of root nematodes for a long time, they have missed the best period of prevention and control. In addition, there is more rain and poor drainage in the field, which will lead to excessive humidity, which is conducive to the growth and spread of germs, resulting in multiple diseases.
In view of root nematode damage, Brightmart’s technicians put forward prevention and control suggestions to fruit farmers: strengthen orchard management, cut off diseased branches and fruits in time, clear out orchards for centralized burning or landfill; timely apply foliar fertilizer, supplement potassium and phosphorus, and Enhance plant resistance.
In addition to improving the level of field management, chemical control is also indispensable. For crops with high commodity value like dragon fruit, high-quality nematicides are required to prevent root nematodes.
During the growth period of dragon fruit, use Nematix mixed with water 800-1500 times to irrigate the roots, and the effect will be more significant when used with water-soluble fertilizer.