PERFORMANCE OF BARLEY VARIETIES AS INFLUENCED BY THE APPLICATION OF DIFFERENT PLANT GROWTH REGULATORS
SANJU DUDI, NEELAM, ANIL KUMAR, SATPAL AND SHWETA
Department of Agronomy, Forage Section, Department of Genetics & Plant Breeding
CCS Haryana Agricultural University, Hisar-125004 (Haryana), India
*(e-mail : berkesia.neelam@gmail.com)(Received : 30 November 2019; Accepted : 25 December 2019)

SUMMARY

A field experiment was conducted during the Rabi season of 2017-18 at research farm of Wheat & Barley Section, CCS Haryana Agricultural University, Hisar, Haryana (India), situated at 29°10’ N latitude and 75°46’ E longitude at an elevation of 215.2 m above mean sea level. Hisar has semi-arid climate with severe cold during winter and hot dry and desiccating winds during summer. The soil of the experimental field was sandy loam, which was low in available N (181 kg/ha), medium in available P (14.2 kg/ha) and high in available K (375 kg/ha).The experiment comprised of two varieties viz., BH 946 (feed purpose) and DWRUB 52 (malt purpose) in main plot and application of Plant growth regulators alone or in combination {Folicur (0.1%) at GS50& Folicur (0.1%) at GS80, Cycocel @ 1.25 l/ha at GS31, Ethephon @ 0.5 l/ha at GS40 and Cycocel @ 1.25 l/ha at GS31+ Ethephon @ 0.5 l/ha at GS40} in sub plot under factorial randomized block design in three replicates. No. of effective tillers/metre row length and 1000-gain weight were found significantly maximum with DWRUB 52. The grain yield and harvest index of 51.3 q/ha and 39.2% were recorded maximum with DWRUB 52, respectively. The yield attributes viz., number of effective tillers/metre row length and 1000 grain weight were found significantly higher with variety DWRUB 52. The chlorophyll content was also observed highest with variety DWRUB 52 as compared to BH 946. Among the PGRs, The highest grain yield (52.5 q/ha) and harvest index (37.7%) were recorded under Cycocel + Ethephon. The yield attributes viz., number of effective tillers metre-1 row length, number of grains earhead-1 and 1000 grain weight were found significantly higher with the application of Cycocel+Ethephon in comparison with other treatments except Cycocel. Cycocel+Ethephon exhibited significantly higher value of NDVI and chlorophyll content at most of the stages.

Key words:Barley, varieties, PGRs, NDVI, chlorophyll content, yield attributes and yield