ABDUL RAUF, BHAGAT SINGH* AND A. K. DHAKA
Department of Agronomy
CCS Haryana Agricultural University, Hisar-125004
(Received : 14 June 2021; Accepted : 28 June 2021)
Present investigation was carried out during Rabi season of 2018-19 at Wheat Section Research Area of CCS Haryana Agricultural University, Hisar. The experiment was laid out in split plot design with four replications. In main plot, three cutting schedules i.e. 45 DAS, 55 DAS and 65 DAS were taken and six nitrogen schedules i.e. N1– 1/3 basal +1/3 at first irrigation and 1/3 after cut, N2– ½ basal + ½ at first irrigation, N3-½ basal and ½ after cut, N4– ¼ basal +½ at first irrigation and ¼ after cut, N5 – ½ basal +¼ at first irrigation and ¼ after cut, N6 – ¼ basal +¼ at first irrigation and ½ after cut as sub plot treatments. Based on the research findings, it was observed that different cutting and nitrogen schedules significantly influenced the growth, yield attributes and yield of dual-purpose wheat. Crop cut at 45 DAS for green fodder resulted in significantly higher plant height, dry matter accumulation (415.0 g), number of tillers (112.2 /mrl), number of effective tillers/mrl (102.87), grains per spike (47.61) and 1000 grain weight (42.57g) as compared to crop cut at 55 DAS and 65 DAS. Crop cut at 45 DAS for green fodder also produced maximum grain yield (61.36 q/ha) and straw yield (98.12 q/ha), which were significantly higher than cut at 55 and 65 DAS. Whereas, minimum grain yield (47.42 kg/ha) was recorded when crop cut was taken at 65 DAS for green fodder. Among different nitrogen schedule, N3 resulted in maximum plant height (106.9 cm), dry matter accumulation, number of tillers (109.0), number of effective tillers (100.50), grain per ear head and 1000-grain weight. Similarly, maximum grain yield (56.88 q/ha) was recorded when half nitrogen dose was applied as basal and half dose of nitrogen was applied just after cut (N3) which was significantly higher than N2 and N5 but it was at par with N1, N4 and N6. Whereas, minimum grain yield (54.09 q/ha) was recorded with N2 treatment. However, maximum straw yield (98.12 qha-1) was recorded with N1 being at par with N3 and N6 but significantly higher as compared with rest of the nitrogen schedule.
Key words:Wheat, dual purpose, nitrogen, cutting, grain yield