When should potassium dihydrogen phosphate be sprayed on taro (what fertilizer can make taro expand during its expansion period)

The taro we grow here is large and oval in shape, which is mainly used to make taro balls for export and domestic sales.

In fact, taro is not difficult to grow, and it is similar to growing potatoes. In the case of applying enough base fertilizer, dig furrows, sow seeds, apply seed fertilizer, build ridges, spray closed herbicides, cover the ground film, and wait for the taro to break through the film. In the future, you just need to pay attention to watering, pest control, and control growth.

In the later stages of growing taro here, we don’t cultivate the soil, dig furrows, apply fertilizer, or cut off the sprouts.

When I first started planting taro, I didn't know much. I heard the old people say to cultivate the soil and cut the sprouts. But after I got into the taro field, I found that it was not the case at all. There were too many sprouts and I couldn't cut them all.

In addition, it was the first year of planting taro, and we didn’t know how to control its growth, so the taro grew nearly 2 meters high. Even people who went into it could not be seen. In addition, there was plastic film on the ridge, which was slippery and could not build up the soil at all.

The most speechless thing is that the taro leaves are like lotus leaves, with a pool of dew on them, which looks clear and transparent, and you can't help but want to drink some. But don't be fooled by it, because this pool of clear water will stick to light-colored clothes and can't be washed off at all, just like a pool of blood.

Isn't this a life-threatening job? I called to ask, and my friend who sells seeds laughed and said, "You are doing unnecessary things. Don't add soil or cut buds. You just didn't control the growth. Hurry up and spray paclobutrazol or other growth control agents, and pay attention to preventing and controlling fall armyworms and red spiders. Add adhesives when spraying the pesticides, otherwise it will be useless and they will roll off the leaves and have no effect."

Taro is an underground crop that bears fruits and has a large demand for potassium fertilizer. If fertilizer is insufficient, it can be flushed with water or sprayed on the leaves, such as potassium dihydrogen phosphate.

When spraying potassium dihydrogen phosphate, you can add insecticides, fungicides, other trace elements, etc. Everyone should know these.

However, there is a slippery wax layer on the taro leaves, which is not sticky at all. The potassium dihydrogen phosphate, insecticides, fungicides, and trace element fertilizers sprayed on the taro leaves cannot adhere to the taro leaves at all, and they all roll to the ground and have no effect. What should I do? What should I add?

When spraying potassium dihydrogen phosphate alone or adding pesticides on taro leaves, you should pay attention to adding super penetrants and spreading agents - silicone.

Silicone is a super-penetrating surfactant that can greatly reduce the surface tension of water and greatly enhance the contact performance of the active ingredients in pesticides and foliar fertilizers on the plants with its excellent spreadability, greatly improving their use effect.

The benefits of adding silicone are:

1. When using foliar fertilizers and pesticides on crops such as taro, adding an appropriate amount of silicone can make them spread all over the crops and the liquid will not slide down, which greatly improves their utilization rate and enhances the effect.

2. Enhance the permeability of leaf pores, improve the ability of liquid fertilizer to withstand rain erosion, and reduce the losses caused by sudden rain after using fertilizer.

3. Make the liquid medicine and fertilizer quickly absorbed.

Organic silicon is widely used in crops such as taro, ginger, and peanuts to improve the efficacy of pesticides and fertilizers. It is especially good for crops with wax layers on their leaves that are not suitable for water. However, organic silicon should not be added to pyraclostrobin, otherwise it will cause pesticide damage.

If you spray potassium dihydrogen phosphate on taro without silicone, you can add brown sugar or white sugar to increase the adhesion of potassium dihydrogen phosphate and the fertilizer efficiency, and the effect is also good .