Optimizing Management of Nutrient Solution and Substrate in the Soilless Green House System for Increasing the Yield of Tomato

سال انتشار: 1395
نوع سند: مقاله کنفرانسی
زبان: انگلیسی
مشاهده: 299

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ATTITTDE02_224

تاریخ نمایه سازی: 11 مرداد 1396

چکیده مقاله:

To reach an optimum nutrient management by fertigation in the hydroponic green house, and especially overcoming the nutrient needs of tomato crop in Iran, an experiment was conducted as a factorial design in a soil-less culture environment, such that three different formulas and three different substrates were selected which included; perlite, coco peat, and their mixture ratio of (1:3) in order. The tomato seedlings after rooting were transplanted to 36 pots. These treatments were carried out with 4 replications. Every 12 pots were nutritionally fertigated with one formula by a separate pump from the source tank. Each tank had two stock solutions, which consisted of an A and B stock solutions. Every week in different stages of tomato plantings, these stock solutions which formed three different formulas, and had included macro and micro nutrients, were diluted ten times in 3 different tanks with separate pumps. They were regulated with an automatic controller, which was turned on for one minute in every hour during the 24 hours period. A main objective was to find out the best optimum use of fertilizers as a formula and a best substrate. We also reduced other cultural practices to obtain the healthy and good quality tomato crop for human health. The final results showed that the maximum tomato yield was from the mix substrate treatment with the amount of 4709.3 grams in each pot, and from the nutrient solution No. 1 with the amount of 4571.3 grams in each pot.

نویسندگان

Saeed Rezaeian

Member of Scientific Board of Soil and Water Research Department- Khorasan Razavi Agricultural and Natural Resources Research and Education Center. Agricultural Research, Education and Extension Organization (AREEO), Mashhad, Iran