Study and evaluation grain yield of promising Lathyrus lines in farmers field at dry land condition.

Increment of world population day to day led to more trying with researchecs to increase crop productions. Our success will be related to transfer of finding research to farmer's field. To do this and transferring new technology to farmers field and to evaluation of advanced lathyrus sativus lines at farmer fields, 7 advanced lines with Naghadeh local variety as check were used for comparing these lines to check in respect of grain yield, forage yield(fresh and biomass). To do this, lines were planted in 3 locations of Dehdasht, Basht and Licak using randomized compelet block design with 3 replications in 4 rows with 5 meters length and 25 cm spacing from each other (plot area was 5 square meters) via labors in the favorite time at 2008-2009 growing season. During growth season, agronomic data were recorded from some important agronomic traits. Because of lack of suffiecent and on time rainfall and severe drought condition in Licak and Irregular and un uniform field irrigation in Basht, didn't collect any data from mentioned areas. For this reason, agronomic data recorded from dehdasht only. Results of forage yield(fresh and biomass) and grain yield indicated that the difference of lines for grain yield and fresh forgae yield were significant at less than 1% probability level while for biomass yield was not significant at probability levels( 5% and 1%). Grain yield were ranged from 324 kg/ha for L4 (Sel. 554) to 2088 kg/ha for L2 (Sel. 474). Domain of biomass yield was from 1787 kg/ha for L4( Sel.554) to 4456 kg/ha for L2 (Sel.474) and fresh forgae yield were ranged from 7255 kg/ha for L7(Sel.1321) to 13535 kg/ha for L6 (Sel.736). Mean comparisons using multi- range test (DMRT) at 5% and 1% probability levels showed that L2 with 226% increment in yield about grain yield in comparing with Naghadeh as check had the highest class(A) and L4 with decline of 49.5% in comparing with checkhad the lowest class(C). While in respect of biomass, L2 (increment of 55% compared to check was in class A and L4 (decline of 34.77 campared to check was in class B as the highest and the lowest biomass yield. In respect of fresh forgae yield, L6 had the highest yield with increment of 45.19% and was in class A, while L7 with decline of 22.2% and the lowest yield was in class D. However present year (2008- 2009) had un favorite condition in respect of rainfall and weather, but L2 and L6 are recomandable for agriculture about grain yield and forage yield respectively.