When is the best time to spray foliar fertilizer on rice?
Foliar fertilizer is a supplement for plants to absorb nutrients, and it is indispensable for many crops during the growing process. So when is the best time to spray foliar fertilizer on rice? How should it be applied?
When is the best time to spray foliar fertilizer on rice?
Generally, spraying foliar fertilizer at the late booting, initial heading, grain-filling and full heading stages of rice is optimal. Among these, during the heading and flowering stage, it should be done in the morning before flowering and after 4 p.m.; for the late booting and grain-filling stages, the most suitable times are before 11 a.m. and after 4 p.m. on sunny days.
How should foliar fertilizer be applied to rice?
1. Dissolve 35 g of rice foliar fertilizer in 15-20 kg of water (the amount of water varies by brand), stir thoroughly to dissolve, and note that clean water is best.
2. Choose equipment with a good spraying effect and spray evenly over the rice foliage; note that when spraying, do not go back and forth, as this can prevent excess nutrients.
3. Master the timing well; each spraying can be spaced 10-15 days apart, so that the nutrients from each application can be fully absorbed.
In addition, when spraying foliar fertilizer, pay attention to the following points:
1. Dosage
Various quick-acting nitrogen, phosphorus and potassium fertilizers, monopotassium phosphate, triacontanol, borax, silkworm droppings, human and livestock urine, etc. can all be used as foliar fertilizer. The amount used per mu is not large, but they must first be processed into liquid fertilizer. Quick-acting chemical fertilizers should be dissolved in 5-10 times water the day before spraying to prevent excessive spraying from burning and withering the rice leaves. Human and livestock urine should first be placed in a pit to decompose; for silkworm droppings, dissolve them in 10 times water, filter after 24 hours, then add enough water and spray; for borax, first crush it, stir thoroughly with a small amount of water into a concentrated liquid, then add enough water and spray.
2. Technique
The solution should be prepared evenly, the spray droplets should be uniform and fine, and the number of sprayings should depend on need.
3. Concentration
The concentration of foliar fertilization is directly related to the spraying effect, and it should be prepared according to the fertilizer, the crop, and local conditions.
When rice foliar fertilizer is used properly, it can improve disease resistance, yield, etc., so everyone must follow the instructions and adjust according to actual conditions, and must not blindly apply it.