Development and Application of Seed Coating Agent for the Control of Major Soil-Borne Diseases Infecting Wheat

Abstract

In order to reduce the usage amount of pesticide fertilizers and protect the natural environment, seed coating agents are receiving increased wide concern. In this study, the active constituent (pesticide) and inactive components (surfactants and film former) of the seed coating agents were screened and optimized by the wet sand processing superfine grinding method. The fungal inhibition test of pesticides showed that thifluzamide, fludioxonil, pyraclostrobin, and difenoconazole have an obvious fungal inhibitory effect on wheat sharp eyespot, take-all, and root rot. LAE-9 and polyacrylamide + carboxymethyl cellulose (CMC) is recommended for the safe surfactant and film former, respectively, based on the seed germination test. Moreover, 6% difenoconazole · fludioxonil flowable concentrate for seed coating (FSC) stimulates the seedling growth of wheat, advances the growth of root, and improves biomass in the field trial, meanwhile, the control efficiency reached above 80%. Thus, we suggested it can be used as an effective seed coating agent for the control of soil-borne diseases in wheat. The seed coating agent has the characteristics of disease prevention, increasing crop yield, and safety of environment, which is of significance in practical application.

Biomaterials Technology for AgroFood Resilience

“…With these considerations in mind and in an effort to reduce the use of petroleum‐based polymers, biopolymers have gained increasing popularity as seed coating materials due to their biodegradability, good film‐forming properties, and being nontoxic and ecofriendly. Among others, cellulose and its derivatives, [ 74 ] chitosan, [ 75,76 ] starch, [ 77 ] alginate, [ 78 ] gum arabic, [ 79 ] gelatin, [ 80 ] and soy protein [ 81 ] are some of the biopolymers that have been widely used in seed coatings for targeted delivery of active ingredients. More recently, the use of silk fibroin—a structural protein extracted from Bombyx mori cocoons in the design of functional seed coatings has opened up new possibilities for sustainable agriculture on marginal lands.…”

Recent advances in biodegradable matrices for active ingredient release in crop protection: Towards attaining sustainability in agriculture

“…Both binders and fillers need to be compatible with the AIs. It has been recently reported that coating the seeds helps to enhance the plant stress tolerance during seed germination and seedling growth [ 27 ]. In an attempt to reduce the fossil fuel–based polymers and owing to the biodegradable nature, ease of availability, and generally low cost of the precursors, biodegradable polymers have been used in seed coating over the last two decades.…”

“…Ren et al. [ 27 ] have developed a polyacrylamide and carboxymethylcellulose–based seed coat for wheat seeds using various fungicides and additives to investigate the effect of seed coating on germination and growth of wheat. To improve the seed coating efficiency, Berninger et al.…”

A Polysaccharide of Ganoderma lucidum Enhances Antifungal Activity of Chemical Fungicides against Soil-Borne Diseases of Wheat and Maize by Induced Resistance

“…In addition, the mycelium of wheat sheath blight and root rot can also live through the winter in the soil and inside and outside the seeds, respectively. Wheat sharp eyespot caused by Rhizoctonia cerealis van der Hoeven and root rot by Bipolaris sorokiniana are important typical soil-borne diseases threatening wheat production worldwide [6]. Wheat sharp eyespot can infect the stems and sheaths of wheat plants, leading to a block in nutrient transportation.…”