TILLAGE SYSTEMS AND SEEDING RATES EFFECT ON YIELD COMPONENTS, SEED YIELD AND BIOLOGICAL YIELD OF BARLEY CULTIVARS

Abstract

A field experiment was conducted to evaluate the effect of conventional tillage (CT), Reduced tillage (RT) and No-Tillage (NT) systems using three seeding rates (100, 120, and 140 kg ha-1) of two barley species Hordeum vulgare L. cultivars namely Arivat and IPA-99. The aim of the experiment was to develop management strategy for selecting tillage system, seeding rate, and cultivar to increase yield of barley under semi-arid conditions. The experiment was laid out in randomized complete block design with split-split plots arrangement having tillage systems as main plot, cultivars as sub plot and seed rates as sub-sub plot. CT and RT was more effective in enhancing tiller number, plant height, spike number, seed yield and biological yield as compared with NT. Tiller number, plant height, spike number, seed yield and biological yield for the highest seeding rate was 24.253, 5.285, 44.142, 31.108, and 9.128% respectively greater than for the lowest. IPA-99 cultivar had more tillers per unit area, spike number, seed yield, biological yield, harvest index and higher plants than Arivat cultivar. However, Arivat cultivar had higher kernel per spike and thousand kernel weight. Negative correlation coefficients were found between spikes number and kernels per spike of -0.691 and spikes number and kernels weight of -0.943. Applying seed rate of 140 kg ha-1 with IPA-99 cultivar under CT seems to the promising combination for semiarid barley.