Effect of Seed- Dressing Fungicides and Seed- Rate on Incidence of Flax Seedling Blight

Abstract

A two-years field study was conducted at Sakha Agricultural Research Station to evaluate 24 combinations of seeding rates and seed-dressing fungicides in controlling flax seedling blight.The seedling rates were 30,40,50, and 60 Kg/fedd. and the fungicides were Vitavax 300, Rizolex T, Sun light , Moncern T, and Maxim AP. The results of the present study provided an evidence that the reduction of seed rate from 60 Kg of untreated seed to 30 Kg of treated seed did not result in any negative impact on stand, seed yield, and straw yield. It is worth noting that this reduction increased stand in some cases. Therefore, seeddressing fungicides could help reduce rate of seeding to 50% of that of untreated seed. This result is of a considerable economic importance due to the steady increase in flax seed price and the increasing need of seed for oil industry.

Overview and Management of the Most Common Eukaryotic Diseases of Flax (Linum usitatissimum)

“…Brown-seeded linseed cultivars were found to be more tolerant to R. solani than yellow-seeded cultivars [90]. The application of fungicides is widely used for controlling R. solani on many crops, but the use of seed treatments to control flax seedling blight is not a common practice among flax growers [91], probably due to limited authorized fungicides.…”

Effect of Cultivar on the Efficiency of Fungicides in Controlling Powdery Mildew of Flax and Relationship of Agronomic and Technological Traits to Disease Severity

“…In the past two years, flax growing areas can grow slowly and reach 25,000 Feddan in the winter of 2019/2020. Flaxseed seedlings blight are caused by various fungi that spread in the soil (Ashour et al, 2019). The most important are Rhizoctonia solani and Fusarium spp.…”