How to scientifically fertilize strawberry in greenhouse ?

Strawberry is delicious and full red juicy pulp, which contains high nutrition and rich vitamin C, etc. Compared with other fruits, greenhouse planted strawberry requires more adequate nutrients, especially nitrogen, phosphorus, potassium and manganese sulfate micronutrient fertilizer, etc.

1. The base fertilizer. Before planting, fertilize sufficient rotten organic manure at one-time. The dosage for each acre is not less than 2000 kilograms of chicken manure or 5000 kg manure. Moreover, the proper amount of P and K can be added after fully mixture.

2. Top dressing. General, from the tent covering to buds coming, it’s better to fertilize potassium sulfate compound fertilizer mainly, 20 kg for each acre, 10 days or so a time.

3. Exo-root top dressing. In order to improve the fruit weight and sugar content to make the taste more delicious and good prices, the fertilization is usually combined with foliar spraying in middle later period. The foliar fertilizers contain 0.3% ~ 0.5% of urea solution, 0.3% ~ 0.5% of potassium dihydrogen phosphate solution, 0.1% ~ 0.3% of boric acid solution, 0.03% of manganese sulfate solution, etc. In both budding period and flowering period, it all can be applied top-dressing.

The control on zinc sulfate monohydrate heavy metal content get further improved

 To some small-scale factories, they has to stop the production of zinc sulfate in the heated summer. Maybe,there’s no exception this year too. As to Rech Chemical Co. Ltd, we still normally keep balance in production and sales in the summer for we had the best process of production zinc sulfate.

Every year, we received a sampling inspection report from a governmental third party testing center, which reports the important test indicators such as zinc sulfate's heavy metals content  lead, arsenic, cadmium content is 0.50 PPM, 0.01 PPM, 0.55 PPM, which not only much lower than national standard (national standard for lead, arsenic, cadmium: 10 PPM, 5 PPM, 10 PPM), but also improved forward much compared with our previous internal control indicators. 

Rech Chemical Co. Ltd’s product could show excellent quality in the test results, due to our severe purchasing standards on raw materials and constant seeking for technology improvement. If customers want to do SGS before shipment we can also arrange it. The original test report on zinc sulfate’s heavy metals content released as follows:

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