A Detailed Guide to the Correct Use of Herbicides in Watermelon Fields
How should herbicides be used correctly in watermelon fields? Please note the following points when using herbicides in watermelon fields: 1. Choose the right herbicide. There are many herbicide varieties available for watermelon production, and the most commonly used ones include 48% trifluralin emulsifiable concentrate, 25% nitrofen wettable powder, 33% pendimethalin emulsifiable concentrate, 48% butralin emulsifiable concentrate...
How should herbicides be used correctly in watermelon fields? Please explain
When using herbicides in watermelon fields, note the following points:
1. Choose the right herbicide. There are many herbicide varieties available for watermelon production, and the most commonly used ones include 48% trifluralin emulsifiable concentrate, 25% nitrofen wettable powder, 33% pendimethalin emulsifiable concentrate, 48% butralin emulsifiable concentrate, 12.5% haloxyfop emulsifiable concentrate, 15% sethoxydim emulsifiable concentrate, 15% clethodim emulsifiable concentrate, 48% alachlor emulsifiable concentrate, 10% quizalofop emulsifiable concentrate, etc.
2. Strictly control the application dose. The dosage of 48% trifluralin is 75-125 milliliters per mu, 25% nitrofen is 100-150 grams per mu, 33% pendimethalin is 80-130 milliliters per mu, 48% butralin is 200 milliliters per mu, 12.5% haloxyfop is 65-150 milliliters per mu, 15% sethoxydim is 75-130 milliliters per mu, 15% clethodim is 50-60 milliliters per mu, 48% alachlor is 150-200 milliliters per mu, and 10% quizalofop is 65-100 milliliters per mu. Dilute each with 40-50 kilograms of clean water and spray on the soil surface before transplanting watermelon. Among these, trifluralin easily decomposes after exposure to sunlight, so after spraying, use a toothed rake to mix the treated soil evenly to a depth of 5 cm, so that the efficacy can be fully exerted.
3. Apply flexibly according to soil and timing. The effect of applying herbicides in watermelon fields is greatly related to the ecological environment. For example, herbicides take effect faster on sandy loam than on clay, but application on clay soil is relatively safer, while excessive concentration on sandy loam is likely to cause phytotoxicity. The dosage should be accurately controlled according to different soils. When the temperature is above 20°C, the weed-killing effect is better. When the temperature is not high in spring and autumn, the dosage should be appropriately increased, and in summer when the temperature is high, the dosage should be reduced as appropriate. When soil moisture is good, the weed-killing efficiency is high, and when soil moisture is poor, the weed-killing effect declines, so application should be chosen when soil moisture is good.
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