Gherkin cultivation in the Netherlands

The Dutch cucumber variety is known for its impressive size, typically reaching 14 to 18 cm in length, with a diameter of about 3 cm and a weight of around 100 grams. It has a crisp texture and a rich, sweet flavor, making it highly desirable in both fresh consumption and processing. This variety is predominantly female, which makes it ideal for greenhouse cultivation. Unlike many open-field varieties, it can be grown without pollination or fertilization, ensuring uniform fruit maturity and high early yields. With proper management, the yield can exceed 20,000 kg per hectare, and farmers can plant 2 to 3 crops per year. Due to the high cost of seedlings, it's recommended to use precision sowing methods such as seedling trays or nutrient pods. The optimal germination temperature is between 24–26°C, and seedlings usually emerge within four days. After emergence, daytime temperatures should be maintained at 23–25°C, while nighttime temperatures should stay between 16–18°C. Cucumber roots are sensitive to waterlogging, high temperatures, and cold stress, so it’s essential to use a well-draining, moisture-retentive growing medium like peat, vermiculite, or perlite. Before planting, the soil should be finely prepared, with more than 5,000 kg of manure applied per 1/15 hectare. Raised beds should be created, with widths ranging from 1 to 1.2 meters. Seedlings should be transplanted when they have 2 to 4 true leaves and are approximately 25 days old, with a planting density of 2,500 plants per 1/15 hectare. Watering should be done immediately after transplanting to ensure good root establishment. During field management, a light, slow watering should be given 3 to 4 days after planting to promote healthy growth. After irrigation, a fertilizer solution should be applied. For each 1/15 hectare, 10 kg of urea should be used every 5 to 7 days. During the fruiting stage, a 0.2% to 0.3% potassium dihydrogen phosphate solution should be sprayed on the leaves once a week. The air humidity should be kept around 80% for optimal growth. In the first week after transplanting, daytime temperatures should be maintained at 25–30°C, and nighttime temperatures at 18–20°C, with no more than 35°C during the day. Once the seedlings are acclimated, the temperature should be gradually reduced to 22–25°C during the day and 16–18°C at night. Dutch cucumbers are particularly resistant to low light conditions, allowing them to produce higher yields even in winter. In summer, when temperatures are high and sunlight is intense, shade nets should be used to protect the plants. If possible, carbon dioxide enrichment can be applied to increase indoor CO₂ levels to 750 mg/kg, which can boost cucumber yields by up to 20%.

Construction Chemicals

Molecular formula: C6H11O7Na
Molecular weight: 218.14
Properties: white crystalline granule or powder, easy to dissolve in the water

Standard:
Quality standard
Item standard
Industry grade: food grade
Identification in: accordance with standard
Assay: ≥98.0%, 98.0 - 102.0%
Loss on dry: ≤0.50%; ≤0.30%
Reduzate: ≤0.70%; ≤0.50%
pH: 6.2 - 7.8; 6.2 -7.8
Sulfate: ≤0.05%; ≤0.05%
Chloride: ≤0.07; ≤0.07
Pb: ≤2μg/g; ≤1μg/g
Arsenic salt: ≤2μg/g; ≤2μg/g
Heavy metals: ≤10μg/g; ≤10μg/g
Appearance of solution (1.0g, 10ml water): colorless, almost clear

Usage:
1, In the medicine field, it can keep the balance of acid and alkali in the human body, and recover the normal operation of nerve. It can be used in the prevention and cure of syndrome for low sodium. In this purpose, it also can be used as Food Additives
2, It can be used as water quality stabilizer because it has excellent inhibiting capacity to scale
3, Used as surface cleaning agent of metal
4, Used as cleaning agent of glass bottle
5, It also can be used as water reducing agent and retarder in the building industry

Sodium Gluconate,Nano Silica,Concrete Retarders Sodium Gluconate,Construction Chemical 99% Sodium Gluconate

Shandong Tiancheng Chemical Co., Ltd. , https://www.tianchengchemical.com