What fertilizer is good for taro topdressing?

Time for topdressing taro

The amount and frequency of topdressing for taro depends on the fertility of the soil. For plots with sufficient base fertilizer and good fertility, apply an appropriate amount of fertilizer, and do it at the same time as tillage, weeding and watering. The first time is around the 4-leaf stage, and the second to fourth topdressing is done at the 7-14 leaf stage, with an interval of half a month.

What fertilizer to use for taro topdressing

Taro is suitable for planting in loose and fertile soil. Base fertilizer should be applied in spring, mainly decomposed organic fertilizer and compound fertilizer.

Generally, compound fertilizer should be used as topdressing for taro. It likes potassium fertilizer. A large amount of active potassium and phosphorus nutrients can fully meet the potassium needs of taro. At the same time, spraying photosynthetic nutrient film fertilizer can synthesize nutrients and chlorophyll to supply plant growth and development.

Taro topdressing method

Taro needs to be top-dressed 2-3 times during its growth period. Quick-acting nitrogen fertilizer can be used for the first topdressing, such as 10-15 kg of urea per mu. In the later stage of taro growth and taro enlargement, topdressing should be mainly with phosphorus and potassium fertilizers, and less nitrogen fertilizer, otherwise it will be detrimental to the growth of tubers. In the vigorous growth period (4-14 leaves), combined with disease and pest control, foliar fertilizer should be sprayed on the leaves.

Principles of taro topdressing

Taro is a fertilizer-loving crop with a long growth cycle, a large demand for fertilizer, and strong fertilizer tolerance. In addition to applying sufficient basal fertilizer, it is also necessary to apply topdressing multiple times. Base fertilizer should be applied after land preparation. Generally, manure or compost, superphosphate, potassium sulfate or wood ash is applied in ditches or holes.

Amount of taro topdressing

When applying top dressing to taro 1-2 times, apply 5 kg of foliar compound fertilizer and 5-10 kg of urea per mu. It can be mixed with water for application or applied next to the roots by digging furrows. When applying fertilizer for the 3rd to 4th time, apply 3-4 kg of foliar compound fertilizer and 0-3 kg of urea per mu.

Precautions for taro topdressing

1. In the initial half month of taro planting, little or no fertilizer should be applied. If too much fertilizer is applied at this time, it will be a waste of nutrients and will affect the development of the crop's root system and even cause fertilizer damage. Nitrogen fertilizer can only be applied after it takes root.

2. In the early stage of planting taro, the plant will stop growing because of the low ambient temperature. Do not increase the amount of fertilizer because you think there is insufficient fertilizer. This will cause fertilizer damage. When the temperature rises, the plant will stop growing. If the temperature is normal in the early stage of planting, you can use an appropriate amount of rooting factor to promote the early and healthy development of young roots.