THE INFLUENCE OF DIFFERENT TILLAGE, CROP ROTATIONS AND NITROGEN LEVELS ON PLANT HEIGHT, BIOLOGICAL AND GRAIN YIELD IN WHEAT

摘要

The purpose of this study was to identify the optimal tillage methods and N levels in a wheat-chickpea (Cicer arietinumL.), wheat-fallow and wheat monoculture in dry farming areas. In this study, two tillage methods (conventional andreduced tillage), three crop rotations (wheat-wheat; wheat-fallow; wheat-chickpea) and four N levels (0, 50, 100, 150kg ha-1) were evaluated in Central Anatolia Region for 4 year. The experimental design was split-split-plot with threereplicates. Tillage methods were in main plots, crop rotations in subplots and N levels in sub-sub plots. Conventionaltillage methods resulted in higher grain yield compared to reduced tillage. Four years is certainly not long enough toreveal the full effects of the crop rotation, but wheat-chickpea rotation provided an alternative to wheat-fallow croppingsystem in the region. Increasing nitrogen doses increased plant height, head length, biological yield and grain yield.Results also indicated that; using conventional tillage with wheat-chickpea rotation and 100 to 150 N kg ha-1 for wheatwould be recommended for wheat production in the region.