The Effect of Seeding Time, Tir (Deep Furrow) Seeding Method, Type of Wheat Varietles and Plant Population on Weed Density in Van Region

Authors : Nuri Yılmaz, Ahmet Güncan

Pages : 5-13

View : 7 | Download : 21

Publication Date : 1991-02-15

Article Type : Research Paper

Abstract :The tir seeding method had been used since 5000 years in Van region. In this method sowing is done into deep furrows, 15-18 cm in depth from soil surface. This method especially is important to increase wheat yield in volcanic soils and dry areas. In the year 1985 the ellect of seeding time, the tir seeding method, type of wheat varieties and plant population on weed density is examined. In this research Euclidium syriacum (L.) R.Br., Romeria hybrida (L) D.D., Papaver dubium L.. Bunium peucefolium and Se-cale cereale L. were examined and counted separately, the remanied weeds in the sarne group. The obtained results has shown that in Van region, density of weed (except S. cereale) is lower in wheat plots seeded on 15 th of August than in wheat plots seeded on September 4 th, September 19 th and October 19 th especially the density of S. cereale was minimum. On other hand weed density in the increased plant population (more than 400 seed per square mater). was higher than decreased plant population (200-300 seed per square mater). Weed density was lower in the plots seeded by the tir seeding method than normal seeder. 305 Yayla wheat variety had best compelation ability among others. 220/39 Köse and Tir wheat varieties (I. aestium spp.) against weed types.
Keywords : Van, Derin Karık, Bitki Sıklığı, Ot Yoğunluğu, Ekim Zamanı