RESPONSES OF FODDER OAT (AVENA SATIVA L.) VARIETIES TO IRRIGATION AND FERTILIZER GRADIENT IN BUNDELKHAND REGION (U.P.) INDIA
RAJBIR SINGH KHEDWAL, DHARAM BIR YADAV AND V. S. HOODA
Department of Agronomy, Punjab Agricultural University, Ludhiana-141 004 (Punjab), India
Department of Agronomy, CCS Haryana Agricultural University, Hisar-125 004 (Haryana), India
*(e-mail : firstname.lastname@example.org)
(Received : 10 September 2018; Accepted : 28 September 2018)
In a field experiment conducted at Regional Research Station, Uchani, Karnal of CCS Haryana Agricultural University, Hisar during kharif 2015, maize (Zea mays L.) under zero tillage (ZT) with residue retention recorded superior growth parameters viz. plant height, leaf area index, dry matter accumulation at all crop growth stages with improvement in grain yield (7322 kg/ha), stover yield (9115 kg/ha), biological yield (16437 kg/ha) and harvest index (HI) (44.64%). However, the benefit cost ratio (B: C) was more under ZT without residues. Zero tillage with residue recorded maximum crop growth rate (CGR) (2.77-25.64 g/m2/day) at all growth stages except at harvest where maximum CGR (25.44 g/m2/day) was recorded under raised bed with residue than other methods. The hybrid HM-4 provided maximum grain yield (7037 kg/ha), net returns (Rs. 58749/ha) and B: C (2.18), while hybrid HM-10 recorded higher growth parameters, stover yield (9409 kg/ha) and biological yield (16241 kg/ha). Atrazine @ 750 g/ha pre-emergence followed by 1 hand weeding at 30 days after sowing with better growth parameters, yield and HI proved more remunerative as compared to unweeded check.