Strawberry fertilizer requirements

Strawberries gradually absorb fertilizers as they grow and develop, especially during fruit expansion, flowering, and harvesting stages. This makes it essential to apply top-dressing fertilizers during these critical periods. Potassium and nitrogen are the most crucial nutrients for strawberries throughout their life cycle. Notably, potassium uptake is even higher than nitrogen during the harvest phase. In contrast, phosphorus absorption remains relatively low throughout the entire growth period. Phosphorus plays a key role in root development, which directly affects strawberry yield. However, excessive phosphorus can reduce the shine and overall quality of the fruit. When it comes to improving fruit quality, applying potassium and nitrogen through top-dressing proves more effective than using phosphate fertilizers. Therefore, it's best to use nitrogen and potassium as the main components of top-dressing, while phosphorus should be applied as a base fertilizer. It's important to note that strawberries are not tolerant of high salt concentrations. Varieties like Chunxiang and Baojia Zaosheng are especially sensitive to fast-acting fertilizers. Using too much soluble fertilizer as a base can be dangerous and may lead to issues such as salt buildup in the soil. Additionally, over-application of base fertilizer can delay the formation of lateral flower buds or even prevent them from forming altogether, resulting in excessive vegetative growth and fewer fruits. To ensure healthy growth and maximum yield, it's recommended to carefully manage both the type and timing of fertilizer applications, focusing on balanced nutrition without overloading the plants.

Nucleic Acid (DNA/RNA) Extraction Kit

1. Introduction

The total viral nucleic acid extraction kit is suitable for extracting total viral nucleic acid from serum, plasma, tissue homogenate and other samples. The kit is based on silica column purification technology, which eliminates the need for toxic phenol-chloroform extraction and time-consuming alcohol precipitation. This product has successfully extracted nucleic acids from hepatitis B A/C, hepatitis C, and norovirus standard. The obtained DNA/RNA can be directly used in a series of downstream experiments such as PCR, RT-PCR, and LAMP.
Notice:

1. The carrier RNA solid must be dissolved in Nuclease Free Water to 1µg/µl before use, and vortex to dissolve. Store in aliquots at -70°C. If you need to store it at -20℃ for a long time, please repackage it according to the number of times of use.

2. Dissolve Proteinase K (20mg/ml): Add Proteinase Dissolve Buffer to dissolve Proteinase K to a final concentration of 20mg/ml. Proteinase K dry powder can be stored at 2-8°C for one year, but dissolved Proteinase K must be stored in aliquots at -20°C. Repeated freezing and thawing of Proteinase K can affect its activity.

3. Buffer VHB must be diluted with 14 ml absolute ethanol before use and stored at room temperature.

4. Buffer RW2 must be diluted with 80 ml of absolute ethanol before use and stored at room temperature.

3. Shelf life

Except for Proteinase K and Carrier RNA, other components of this product can be stored at room temperature (15-25°C) for 12 months, and should be stored at 2-8°C for long-term storage. Proteinase K and Carrier RNA dry powder are transported at room temperature. Please store at -20°C after receiving the test product, and store at -20°C after dissolving.

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