Latest Reasons for Low Yield in Off-Season Mangoes and Solutions

Mango is a fruit that comes on the market in summer, but improving off-season cultivation techniques can bring it to market in early spring, when its quality is excellent and the price is high. However, there are some technical problems in off-season cultivation that lead to low yields. What causes this? How should it be solved? Let's take a look together.

I. Reasons for Low Yield in Off-Season Mangoes

1. Poor Climate

Mango flowering and fruiting occur in the cold, dry winter and spring, so the yield is greatly affected by unfavorable climate. First, low temperatures and continuous rain: although low temperatures can promote mango flower bud differentiation, encountering low-temperature and rainy weather after flowering will cause flower drop, poor pollination and a low fruit-setting rate. Second, prolonged continuous high temperatures: mangoes need a certain amount of low temperature to favor flower bud differentiation, and if high temperatures persist for a long time, the plants will find it difficult to send out flower panicles.

2. Physiological Metabolism Disorder

Many orchards use paclobutrazol to force flowering. Because cultivation techniques are not up to standard and because of problems such as long-term excessive application, the physiological metabolism of the fruit trees becomes disordered, resulting in undesirable phenomena such as overly long flower panicles and an unreasonable proportion of bisexual flower formation, which leads to a very low fruit-setting rate and much physiological fruit drop.

3. Lack of Fertilizer and Water

Some orchards apply little fertilizer and the soil has few nutrients, so the fruit trees are malnourished, which affects the final yield. This is especially true for forced-flowering mangoes, because the vegetative growth period is short and nutrient accumulation is low, which has a relatively large impact on yield.

II. Measures to Increase the Yield of Off-Season Mangoes

1. Regulating the Flowering Period

Based on an analysis of the climate requirements for mango flowering and pollination as well as market demand, the mango flowering period should be arranged for mid-to-late November. If flowering occurs in December to February, then attention should be paid to the local climate. When unfavorable climate occurs, 0% ethephon can be sprayed on the leaf surface, which can delay the flowering period by 20-30 days.

2. Staggering the Flowering Period

If unfavorable climate occurs, it will not cause complete failure, so the same variety and the same orchard can be treated with paclobutrazol in two or more stages, with each stage about 10 days apart. However, when spraying paclobutrazol, pay attention to the concentration and spray volume: generally, add 100 grams of the chemical to 15 kg of water and spray it evenly on both sides of the leaves, with the degree being that the solution is about to drip but has not yet dripped.

3. Forcing Flowering

After the second flush of shoots has stabilized, when there is excessive rain or the weather is relatively hot, new shoots may also be sent out. You can add 8-10 ml of ethephon plus 50 grams of paclobutrazol per 15 kg, and spray both sides of the leaves, with the degree being that the solution is about to drip but has not yet dripped.

4. Applying More Fertilizer

This is an important measure for increasing the yield of off-season mango cultivation. The fruit trees should be given whatever nutrient they lack. Applying fertilizer too many times will also increase costs. If funds are limited, fertilizer must be applied at least twice a year, namely the post-harvest fertilizer and the flower-forcing and flower-strengthening fertilizer.

  The above is an introduction to the reasons for low yield in off-season mangoes and the solutions. We hope it can help you. If you want to learn more related knowledge, please follow us.