CHANGE IN YIELD AND CHEMICAL COMPOSITION OF TALL FESCUE (Festuca arundinacea Schreb.) PLANTS UNDER SALT STRESS

Authors : Mahmut KAPLAN, Mustafa BASER, Hasan KALE, Hasan Ali IRIK, İsmail ULGER, Ali UNLUKARA

Pages : 204-210

Doi:10.17557/tjfc.356220

View : 28 | Download : 9

Publication Date : 2017-12-15

Article Type : Research Paper

Abstract :The present study was conducted to investigate the effects of different irrigation water salinity levels insert ignore into journalissuearticles values(0, 3, 5 and 8 dS/m); on hay yield, chemical composition, gas and methane production, metabolic energy insert ignore into journalissuearticles values(ME); and organic matter digestibility insert ignore into journalissuearticles values(OMD); of plants. Experiments were conducted in randomized blocks design with four replications for two years insert ignore into journalissuearticles values(2014-2015);. Calcium chloride insert ignore into journalissuearticles values(CaCl2);, sodium chloride insert ignore into journalissuearticles values(NaCl); and magnesium sulfate insert ignore into journalissuearticles values(MgSO4); salts were used to prepare irrigation waters with different salinity levels. Drip irrigation was used. Fresh and dry hay yields, plant height, acid detergent fiber, neutral detergent fiber and crude oil contents decreased with increasing salt doses. Tall fescue Olympus cultivar exhibited a moderate tolerance to salinity. Fresh hay yield decreased by 8.2% at 1.85 dS/m threshold salinity level and dry hay yield decreased 8.2% at 1.97 dS/m threshold salinity level. Crude protein content, gas and methane production, net energy lactation, metabolic energy and organic matter digestibility increased with increasing salt doses. Despite the decreases in hay yield, 8 dS/m did not result in any decreases in protein yields and resulted in low gas and methane production.
Keywords : Gas production, hay yield, tall fescue