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<h1>Coconut heart leaf nails</h1>
<h1>Coconut palm leaf beetle - control method</h1>
(1) Spray control: 48% Lesben emulsion 1000 times + 5% high efficiency cypermethrin emulsion 1500 times, or 90% dichlorvos + 80% dichlorvos 1000 times, or 8% nematode net emulsion 1000 times, or cypermethrin, or chlorpyrifos, or acetamidine, etc.
(2) Hanging bag control: use small packages of coconut carapace (acetamidine + insecticidal single) powder, hang on the base of the petiole of the heart leaf with a thin line, and the medicine bag is stuffed between the heart leaf and the side leaf, and the hanging bag method has high efficacy and long effectiveness (8-10 months) on the coconut heart leaf nail. With 38% imidacloprid · Thiazide suspension (mesophthal) 1000x + 5% methylphenidate · Insect mite nitrile water emulsion (top Thai) 500 times foliar spray or irrigation of roots.
<h1>
Mesothecarpus
</h1>
snail
<h1>Betel nut yellowing green prevention and control measures:</h1>
(1) Select healthy and disease-free seedlings.
(2) Strengthen cultivation management, increase the application of decomposing farm manure, phosphorus and potassium fertilizer, biological bacterial fertilizer, etc., scientific cultivation, appropriate inter-breeding or free-range cattle and sheep, etc.
(3) No herbicide, manual or machine weeding.
(4) Spray fungicides to prevent fungal and bacterial leaf spot diseases, and dig out root rot disease strains.
(5) Timely prevention and control of coconut heart leaf beetles, red-veined spike borers, mesomorphs and other pests.
(6) Immune-induced resistance, increase cold resistance and disease resistance, promote results (spraying sea isola, etc.).
(7) Cut down the diseased plants that still do not bear fruit after taking the above measures.
Immuno-induced:
750x seacretan + 1000x spray or irrigation of potassium calcium boron zinc.
Activating soils:
Shrimp and crab shell-based organic matter (marine black gold) 500 times irrigation roots.