How to treat sesame leaf disease?

With the extensive planting of sesame, sesame leaf disease occurred in all sesame producing areas, which seriously affected the quality and yield of sesame. So how to treat sesame leaf disease?

I. Leaf spot

Sesame leaf spot is a common disease in sesame field in China. Sesame leaf spot is also known as sesame tail gray star disease and sesame snake eye disease. Mainly harmful to leaves, stems and capsules. There are two common leaf symptoms. The pathogen overwintered on seeds and diseased bodies with hyphae, and produced new conidia in the next spring, which were spread by wind and rain, and were prone to disease at flowering stage.

Prevention and cure method

The main results were as follows: (1) the seeds were selected for disease-free seeds and soaked in 53-55 ℃ warm soup for 10 minutes to kill the hyphae on the seeds.

(2) implement crop rotation.

(3) clean the fields in time after harvest, remove the sick and disabled bodies, and turn the land deeply in time.

(4) Fungicides are sprayed at the first onset before flowering. See Sesame Leaf spot.

2. Leaf blight

In terms of control, first, disease-resistant varieties were selected and seeds were soaked in 53 ℃ warm water for 5min. The second is to carry out crop rotation and remove the sick and disabled bodies in time after harvest. The third is to strengthen the management of sesame fields to avoid branches and leaves covering the ground and timely drainage after rain to prevent moisture retention. Fourth, at the initial stage of the disease, 70% methyl thiophanate wettable powder was sprayed with 800x solution, or 75% chlorothalonil wettable powder 1500 times, or 50% carbendazim wettable powder 1500 times, or 30% Ludebao suspension 500x, or 47% plus Ruinong wettable powder 700 times 800 times, once every 7 days, 2 times in a row.