Since ancient times, raspberries have been known as the richest source of vitamins and minerals. Stocky housewives freeze the berries, dry them for the winter, in order to pamper their friends and loved ones with a healthy delicacy in the cold season.
- Top dressing with organic fertilizers
- Fertilizing with mineral fertilizers
- Appearance will tell
In order to grow healthy raspberries in your garden and get a decent harvest, you need to fertilize the plant. Feeding raspberries should be carried out with organic and mineral fertilizers every season.
Top dressing with organic fertilizers
Organic fertilizers contain many trace elements necessary for plant growth and development: calcium, potassium, nitrogen, phosphorus. They are easy to digest and have an impact on the fruiting result.
The preferred organic fertilizer is rotted manure. You can use it for feeding in autumn or spring at the rate of 6kg / m2. It is better to apply not rotted manure under the plant in the fall. Over the winter, it will finally perepere and give strength to spring growth, and in severe frosts it will warm the raspberry roots.
The best option for organic fertilization is poultry manure, in particular, chicken. It is better to use it in the form of liquid organic matter in the fall, spreading it evenly over the entire area of the raspberry tree.
Rotted compost gives a good effect. According to its characteristics, it is not inferior to manure. To obtain good quality compost, poultry droppings, tree leaves, manure, corn cobs, peat, and garden weeds are used. During composting, the organic mass is saturated with important nutrients for the plant - nitrogen, potassium, phosphorus, and harmful microflora is disinfected. The finished compost is applied under the raspberry bushes at the rate of 10kg / m2.
You can use peat to fertilize raspberries. It contains a small percentage of nutrients, but it improves the structure of the soil, contributing to increased fruiting. You can apply this type of fertilizer at any time.
Fertilizing with mineral fertilizers
It is advisable to fertilize with mineral fertilizers in the spring. Potassium salt, nitrogen fertilizers and superphosphate are well suited for these purposes.
Superphosphate and potassium salt affect the yield of raspberries. Potash fertilizers can completely replace conventional wood ash. Its chemical composition contains useful trace elements and therefore it is very nutritious for raspberries. Ash does not contain chlorine, which has a negative effect on the plant. It is enough to add 150 g / m2 and the result will be evident. Ash in the form of top dressing is applied in dry or soluble form.
Nitrogen fertilizers are also applied under raspberries in the spring (10g of ammonium nitrate and 8g of urea per 1 m2).
Phosphorus is rarely used to feed raspberries. But if there is a need, it should be brought in in early spring or before winter.
You can use mineral fertilizers in combination. To do this, add 30 g of ammonium nitrate, 60 g of superphosphate, 40 g of potassium salt to a bucket of water. It is allowed to apply mineral fertilizers at one time or to divide it by half - 2/3 in spring, the rest - at the beginning of summer.
The combination of organic and mineral fertilizers is useful for raspberries. For this purpose, a mixture is prepared from manure (1.5 kg), nitrogen (3 g), potassium (3 g), phosphorus (2 g), per 1 m2.
Fertilizer doses should be adjusted based on the development of the bush and the yield of berries. If the shoots are of sufficient thickness and reach a height of two meters, and the yield is 1-1.2 kg per bush, this means that fertilizing is done correctly and there is no need to increase the dose. If the yield is much lower, the dose of fertilizer should be increased.
Appearance will tell
By the appearance of the plant, you can identify which important elements it lacks, and which are in excess:
- small yellowed foliage. If the leaves of the plant have faded and stop growing, the cause is a lack of nitrogen;
- large leaves of a dark color. Excess nitrogen in the soil leads to the rapid growth of shoots and leaves. This is fraught with shedding of unripe raspberries and a decrease in the level of fruiting;
- brown leaves, as if burnt at the edges. The plant is covered with brown leaves, this indicates that it lacks potassium. With a lack of this element, the plant does not tolerate winter well;
- thin shoots. If the plant starts up weak and thin shoots, it means a lack of phosphorus;
- yellowed leaves, poor growth. If the plant grows poorly and the leaves begin to turn yellow intensely from the center to the edge of the leaf, it means a lack of magnesium;
- yellowish leaf with a green vein. This state of the leaves signals a lack of iron.
Having identified signs of a lack of important elements, you can correct the situation in time, improve the growth and development of the plant. At the same time, the yield of raspberries will increase significantly, the berries will be larger, aromatic and sweet.