مطالعه عملکرد و سایر خصوصیات زراعی محصولات تحت نظام های مختلف کشاورزی در منطقه سرد

This research is a part of 5-years project that is conducted to compare conservation and conventional agricultural methods and their effects on crops yield and agronomical characteristics in two conventional and suggested rotation systems. This study is about clover related to the second year in suggested rotation system (Wheat - Clover - Sugar beet - Barley (Silage maize ) -Wheat ) that was conducted in Jolge-E-Rokh research station . Experiment was conducted as split-plot in Randomized Complete Block Design with three replications. Treatments were various tillage methods in three levels (main plot), and plant residual management in three levels (sub plot) and they were studied in rotation system program. Fresh forage yield was not influenced by considered treatments in any harvested times in statistical levels, %1 and %5, but differential rates of forage yield were effected by plant residual rates in %10 statistical level. Highest forage yield (30.960 t/ha) obtained in No tillage system and saved %30 plant residual. Lowest forage yield (18.670 t/ha) obtained in conventional tillage system and with no saved residual.