RU2253966C2 - Method for production of selenium-enriched tomato - Google Patents

Abstract

FIELD: agriculture, in particular vegetable farming on area under glass.

SUBSTANCE: claimed method includes single-step sodium selenate introducing into reservoir with water of drip irrigation system in amount of 7.5 g/hectare at the beginning of tomato fruiting stage. Obtained tomato production contains biological selenium in fruit in amount of 24.0-67.0 mug/kg of raw material for 5-6 months.

EFFECT: selenium-enriched tomato product for long period, obtained by single-step selenium introducing in law dose.

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Description

The invention relates to the field of agriculture, in particular to closed vegetable growing, and can find application in obtaining vegetable products enriched in selenium, which allows it to be used to correct selenium deficiency in human nutrition.

Known methods of enrichment of crops with selenium, such as the enrichment of nodules of stachis with selenium [1]. Three methods have been studied here: soaking nodules in a solution of sodium selenate, adding sodium selenate to the soil, spraying plants with a solution of sodium selenate at a rate of 2000 l / ha for 2 periods: at the beginning of nodule formation and 3 weeks before harvesting with 0.1% concentrations and 0.2%. This method has disadvantages: the culture of stachis is rare. The resulting product has a short shelf life.

The closest analogue is a method for enriching selenium in vegetable green crops, in which selenium is introduced in the form of sodium bislenite (NaHSeO ₃ ) in a nutrient solution in the amount of 0.1 and 1.0 mg of selenium per 1 liter of solution 6-7 days before harvesting at using thin-layer flow technology (NFT) [2].

The disadvantage of this method is the need to introduce increased doses of selenium in a strictly defined time frame, and the utilization of selenium from the nutrient solution is minimal. In addition, the resulting product has a consumption period of not more than 10 days.

The technical problem of our proposed method is aimed at obtaining selenium-enriched tomato products with a single application of low doses of selenium and a long period of its consumption (within 5-6 months).

A single application of selenium with this enrichment method allows you to process 56 thousand tomato plants on an area of 2 ha and get from 236.9 t / ha (Titanic) to 276 t / ha (Frontero).

A method of enriching tomato fruits with selenium is achieved by the fact that sodium selenate (Na ₂ SeO ₄ ) is introduced into the water tank of the drip irrigation system once in an amount of 7.5 g / ha, from where it uniformly enters the tomato plants at the beginning of the fruiting phase.

Our proposed method for enrichment of tomato selenium allows plants to accumulate selenium in fruits from 1 to 20 inflorescences (table 1).

Table 1
The accumulation of selenium by tomato fruits by varieties. Grade The content of selenium, μg / kg of crude substance Control (before processing) After processing Frontero 5.1 24.0-63.0 Titanic 6.9 31.0-47.0 Ostrich 10.9 33.0-65.0 Admiral 10.1 31.0-52.0 Pharaoh 11.3 29.0-67.0

These tables show the effectiveness of the method of enrichment of tomatoes with selenium from the beginning of fruiting to the end of the growing season. Within 5-6 months, these varieties allow you to get enriched selenium products from 236.9 t / ha (Titanic) to 276 t / ha (Frontero). Using this method allows the correction of selenium deficiency in human nutrition.

Sources of information

1. Gins V.K., Golubkina N.A., Konenkov P.F. Enrichment of nodules of stachis with selenium. Modern achievements of biotechnology. Materials of the All-Russian Conference. Stavropol, 1996.S. 12-13.

2. Torshin S.P., Sosnovsky V.V. The enrichment of selenium in vegetable green crops in order to correct selenium deficiency in human nutrition using thin-layer flow technology (NFT) // Gavrish, 2000, No. 3. P. 15-17.

Claims (1)

A method of enriching tomatoes with selenium, including the introduction of sodium selenate in certain doses, characterized in that sodium selenate is once introduced into the water tank of the drip irrigation system in an amount of 7.5 g / ha at the beginning of the fruiting phase of the culture for accumulation in tomato fruits for 5- 6 months of biological selenium in the range of 24.0-67.0 μg / kg of crude substance.