RADIATION USE EFFICIENCY, PHENOLOGY AND PRODUCTIVITY OF SOYBEAN AND WHEAT IN A SEQUENCE UNDER DIFFERENT TILLAGE AND PLANTING METHODSHari Ram and D.S. KlerAbstract The experiment on soybean (var. SL 295)-wheat (var. PBW 343) in sequence was conducted at Punjab Agricultural University Ludhiana during kharif and rabi 2003-04 and 2004-05 on irrigated loamy sand soil with eight treatments as : Tr Flat conventional tillage (CT) (khariNCT (rabi), T2 CT/no tillage (NT), Ty NT! NT, T t ha l straw (S)/ NT, T beds (FB)/CT, T. CT/ FB, T7. permanent beds (PB)/ PB, T. PB+S/PB in R.B.D. with four replications. The effect of various treatments on yield of soybean and wheat was found to be non significant. Soybean yield recorded in f/CT (14.77 & 16.89 q hal, NT/NT (15.41 & 17.02 q ha1), FB/CT (15.45 & 17.93 q ha-1) and PB/PB (13.43 & 18.02 q ha-1) was similar. The maximum recorded soybean seed yield in fresh beds during 2003 and in PB+S/ PB (18.84 q ha') during 2004 was 4.60 and 11.55 per cent more than CT/CI', respectively. NT-FS/NT during 2003 and PB+S/PB during 2004 recorded higher PAR1 at R5 (1.40 & 0.80%) than CT/CT treatment. Almost similar grain yield of wheat was recorded in CT/CT (56.27 & 54.33 q NI/NT (56.80 & 54.50 q ha-'), FB/CT (56.37 & 54.36 q ha1) and PB/PB (54.35 & 52.30 q ha). The grain yield of wheat was highest in NT+S/NT (56.81 and 54.51 q ha4) during both years of study. NT+S/NT tended to record more PAR1 in this treatment. Mulched treatment of soybean showed more days to mature.
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