Effects of Plant Extracts and Disinfectant Huva-San TR 50 on the Quality of Carrot (Daucus carota L.) Seeds

Abstract

The aim of the study was to determine the effect of Aloe vera (L.) Burm.f. (Aloe) and Morinda citrifolia L. (Indian mulberry) plant extracts and disinfectant Huva-San TR 50 (hydrogen peroxide stabilized with silver ions) on carrot seed quality. The seeds of two carrot cultivars Amsterdam (sample I) and Berlikumer 2 (sample II), were soaked in solutions of Aloe and Indian mulberry extracts and Huva-San TR 50 at concentrations of 0.025 %, 0.05 % and 0.1 % for 30 min. Untreated seeds and seeds soaked in distilled water for 30 min were used as controls. Seed germination was assessed after 7 and 14 days of incubation. The speed and uniformity of seed germination (vigour) were evaluated. Mycological analysis was performed using a deep-freeze blotter test. Sample I was characterized by lower germination at the first and the final counts than sample II and higher seed infestation with Alternaria radicina. Treating seeds of sample I with Morinda citrifolia plant extract at concentrations of 0.025 and 0.05 % reduced their infestation with Alternaria alternata and A. radicina, increased germination at the first and the final counts, and did not affect seed vigour. The effects of Aloe extract and disinfectant Huva-San TR 50 on seed quality parameters varied depending on their concentration. Hence, further studies are necessary to establish the optimal conditions for carrot seed treatment.

Basic Substances and Potential Basic Substances: Key Compounds for a Sustainable Management of Seedborne Pathogens

“…The reduction of disease incidence in seedlings from seeds treated with hydrogen peroxide ranged from 98.2% to 100% but the germination rate was also reduced compared to inoculated untreated seeds. Differently, hydrogen peroxide stabilized with silver ions applied to Daucus carota seeds had no phytotoxic effects, and it caused a significant decrease in the percentage of seeds infested with Alternaria radicina [38].…”

Effect of Soil Application of Zeolite-Carbon Composite, Leonardite and Lignite on the Microorganisms

“…Using the microbiological media, the microorganisms were detected: bacteria (agar TSA, BTL, Poland, 37 °C/24 h), mold fungi (agar MEA, BTL, Poland, 28 °C/5 days), actinomycetes (agar Actinomycete, Biocorp, Poland, 28 °C/7 days), Azotobacter spp. (Ashby's Mannitol Agar [23], 28 °C/7 days, and ammonifiers (agar Rougieux [10], 28 °C/7 days). Changes in the number of individual groups of microorganisms are important for the assessment of fertilisation efficiency and indirectly inform about the fertility and quality of soil from the agricultural point of view [24].…”

“…The presence of specific enzymes -deaminases secreted by these microorganisms -determines the biochemical transformations known as ammonification. Ammonification is considered a desirable process in the soil, as compounds that are difficult for plants to access are transformed into readily available ones (NH 4 + , NO 3 -) [9,10]. Finding new methods to increase soil productivity and fertility is one of the common problems in agriculture.…”