Prunes are a common fruit that is native to southeastern China and is now cultivated in most areas around and south of the Qinling Mountains in China. It is now widely cultivated all over the world. The cultivation area of plums is mainly concentrated in southern and southwestern China, including Sichuan, Hunan, Hubei, Guizhou, Yunnan and other provinces. It is adaptable and grows better in fertile, well-drained soils. The fruit ripening period of domestic plums is from May to August, and the ripening period of different varieties is slightly different.
There are many varieties of Chinese plums, which can be divided into four categories: yellow, green, purple and red according to the different shape, skin and flesh color. Plums can also be divided into two categories: water honey and crisp plums according to the degree of softness and hardness of the fruit. The fruits of plums are soft and juicy when fully ripe, and have the best taste when they are hard and ripe, such as Nanhua plums; The fruit of crisp plum plums is crispy and juicy when ripe, the flavor is delicious, and the taste decreases when soft and ripe, such as Pan Yuan plum, red beauty plum, white beauty plum, Chimi plum, etc.
First, plum planting pain points
The main pain points of plums are that the fruit is easy to fall, the fruit ripening period is short, the peel is easy to break, the fruit is easy to rot and ripen, the fruit color is difficult to change, the fruit sugar content is not high, etc., these problems will lead to low fruit quality rate, affecting economic value and income.
The study found that during the growth of plum fruit, as the chlorophyll gradually decreased, anthocyanins began to form and accumulate, resulting in a red appearance of the peel. However, the accumulation of anthocyanins is affected by many factors, including environmental factors, nutrient supply, and growth regulator effects. These factors directly or indirectly affect the accumulation of anthocyanins, thereby affecting the appearance and quality of plum fruit.
Second, plum color change sweetening management plan
Sweet crown is mainly used in fruits, positioned as color change and sweetening, which can promote the ripening and color transformation of fruits, while increasing the sugar content of fruits and increasing the sweetness of fruits.
The main component of sweet crown is crown funguin. As a microbial metabolite, coronatin is produced by pathogenic bacteria such as Pseudomonas syringe during the infection of plants. Coronacin has physiological regulatory effects, which can regulate the growth, differentiation, development, secondary metabolism, stress resistance and disease resistance of plants.
Sweet crown also contains a variety of essential elements needed by plants to quickly replenish the nutrients needed for plum fruit growth and color transformation. The use of sweet crown can comprehensively promote the color change and sugar content of plum fruit, which has a significant effect on improving the quality and yield of plum fruit. The main components of sweet crown include phosphorus, potassium, nitrogen and other nutrients, which can be quickly absorbed and utilized by plum fruit, promote the normal growth and development of the fruit, and improve the quality and yield of the fruit.
Model scheme
When: April 2023
Location: Pengshan District, Meishan City, Sichuan Province
Test product: Sweet crown
How to use: foliar spray 3 times, the first use from the beginning of the puffing fruit, the second use at an interval of 10 days, and the third use at an interval of 10 days
Dosage: normal spray, wet spray
Demonstration effect
Demonstration effect: The puffing effect is remarkable, after using the sweet crown once, the average diameter of the plum is more than 1.2cm, and the average weight is more than 21g
Comparison scheme
Plum coloring effect ▼▼▼
Sweet crowns are not used
Use Sweet Crown 3 times
Summary: After the follow-up observation of the demonstration field, it was found that the use of sweet crown scheme can promote the coloring of plums well. In contrast, under conventional management, plums are slowly colored, and the peel is blue and white, while foliar spray with a sweet crown helps promote plum coloration, and the peel turns evenly, looks good with powder, and has a more vivid color. This shows that the nutrients contained in the sweet crown regimen and the plant growth regulator crown can effectively stimulate the growth and development of plum fruit, promote the coloration and quality of the fruit.