Detailed Explanation of Raspberry Planting Methods and Technical Key Points

Raspberry, also known as raspberry, mountain thrower fruit, milk bubble, sowing seedling bubble, March bubble, April bubble, dragon boat bubble, barley bubble, bubble thorn, thorn gourd, steamed bun berry, high-legged berry, is an erect shrub, 1-3 m tall; branches have prickles, and are pubescent when young.

Key points for raspberry planting

1. Variety selection

Raspberries actually look very similar to strawberries, and their taste is also sweet and sour, except that their flavor is different from strawberries, and the carrier on which they grow is also different. There are many raspberry varieties, such as red raspberry, black raspberry, Hongbaoyu, April bubble, June bubble, tray, and double-season red raspberry, and so on. There are roughly more than ten to twenty kinds in total, but the best varieties for artificial cultivation are double-season red raspberry or black raspberry. Double-season red raspberry can be harvested twice, while black raspberry inherently grows more luxuriantly than other raspberries, has a higher yield, and its nutritional profile and taste are both excellent.

2. Fertilizer and water management

Do not assume that just because raspberry used to be wild, it has no requirements for nutrients and water. In fact, that only shows that it has strong adaptability and can still survive, bloom, and bear fruit in harsh environments. If you want the raspberries you plant to have a higher yield than usual, then fertilizer and water management must be done well.

First, let us talk about fertilization. Apart from the base fertilizer, we also need to apply fertilizer twice as topdressing. The base fertilizer is generally mainly farmyard manure, and an appropriate amount of urea and phosphate fertilizer also needs to be added. The first topdressing is at flowering time, mainly using nitrogen fertilizer, which can prolong the flowering period. At the same time, during this period, some non-toxic agents for fruit retention and fruit enlargement can be sprayed to promote fruit growth. The second fertilization is one week after fruit set. At this time, phosphate fertilizer and potassium fertilizer are mainly used to promote fruit growth, promote root growth, and prepare for a high yield the following year.

3. Branch and leaf management

We all know that during the growth process of raspberry, its branches and leaves are constantly growing and also constantly extending outward, so when planting we must pay attention to density and give it enough space to extend its branches and leaves. After the raspberry tree survives planting, it will grow some new branches and leaves. At this time, we can cut off those older, more fragile, or diseased branches and leaves to reduce unnecessary nutrient loss.

When the newly grown branches and leaves reach 40-50 cm, we can pinch off the tips of the new branches. After about five days, several side branches will grow again, increasing the number of raspberry branches, which is also a way to increase yield. After each raspberry harvest, we also need to prune the raspberry branches and leaves once. This time, the main purpose is to achieve a high yield the following year, so we need to cut off the branches that have already borne fruit, then wrap them with plastic wrap, and the following year new branches will grow and bear fruit again.

4. Disease control

The most common diseases of raspberry are stem rot and powdery mildew. Stem rot mainly harms the newly grown branches of raspberry. The initial symptom is the appearance of many black spots on the stem, then the branches are slowly damaged, and in the most serious cases the entire plant withers. The control method is to spray 500-fold thiophanate-methyl solution, or 500-fold 40% phosethyl-Al solution, or 500-fold thiram solution.

As for powdery mildew, there is no need to say much. It can be controlled by using 1000-1500-fold 25% triadimefon wettable powder. The main pests are moth pests and beetles. We can use trapping or directly spray and kill them with pesticides. Commonly used pesticides include trichlorfon and dimethoate emulsion.

5. Harvesting and fresh-keeping

Raspberries need to be harvested in batches, each time harvesting only those fruit trees that are fully ripe, leaving those half-ripe and green raspberries for the second and third harvests.

When harvesting ripe fruit, also pay attention to placing good-quality and poor-quality ones separately. Harvesting must be timely. It can be slightly earlier by one day, but it must not be too late. If it is late, the raspberries will either already be rotten or have fallen to the ground, so the harvest time must be well controlled. Finally, raspberry fruits are relatively fragile and have a relatively short storage time, so we can use modern preservation technology for fresh-keeping, such as low-temperature preservation and modified atmosphere packaging, and so on. If fresh-keeping is not done well, then the raspberries will have no value.