Fish protein organic fertilizer is a new type of functional fertilizer, sprayed it as a foliar fertilizer on tomatoes in soilless cultivation in a greenhouse at a concentration of 3000 times, and analyze the effects on the sugar content and taste of the fruits. The results showed that the application of fish protein organic fertilizer could increase the sugar content of tomatoes. As for the taste test, more subjects agreed that the taste of tomato after adding fish protein organic fertilizer was better.
Fish protein fertilizer as a functional fertilizer has attracted growers' attention. It contains small molecular polypeptides, amino acids, taurine, vitamins and other active substances, and it is also rich in calcium, magnesium and other medium and trace elements. Apply fish protein can increase tomato yield, advance tomato ripening time, and enhance plant disease resistance. It also increases the sweetness of tomatoes and improves the taste of tomatoes grown in greenhouses in winter.
Field Trial Review
At the beginning of the trial, we only applied fish protein fertilizer for soilless tomato, without supplementing other nitrogen, phosphorus and potassium fertilizers. The results showed that the growth of the treated tomato was obviously slower than the tomato in the CK group.
Therefore, fish protein organic fertilizer is more suitable for top dressing for facility soilless cultivation of tomatoes.
However, it is also necessary to apply normal basic fertilizers to supplement a large number of elements required for the normal growth of plants in the promotion and application.
As for the taste test, the results can be seen from the sweetness score that the participants generally indicated that the tomatoes in the treat group were sweeter, and surely that the tomatoes with high sweetness were more preferred by consumers.