Effect of Plant Growth Regulators on Growth and Yield of Onion (Allium cepa L.)
Ram Prakash *
TD PG College, Jaunpur (U.P.), India.
Rajaneesh Singh
Department of Horticulture, TD PG College, Jaunpur (U.P.), India.
Virendra Kumar
CBL, PG College, Lakhimpur Khiri, (U.P.), India.
Munish Kumar
Ganna Utpadak Degee College Bahedi Bareilly, India
*Author to whom correspondence should be addressed.
Abstract
A field experiment entitled “Effect of Plant Growth Regulators on Growth and Yield of Onion ( Allium cepa L.)” was conducted during two consecutive years 2019-20 and 2020-21 in rabi season at Agriculture Research Farm, Veer Bahadur Singh Purvanchal University, Jaunpur( U.P) to study the effect of plant growth regulators on growth and quality of onion ( Allium cepa L.) . The trial was laid down in randomized block design (RBD) with three replications and ten treatments viz. T1- Control- Distilled Water, T2. GA3- 50 ppm, T3. GA3- 100 ppm, T4. GA3- 150 ppm, T5- NAA – 50 ppm, T6- NAA- 100 ppm, T7- NAA – 150 ppm, T8- Kinetin- 50 ppm, T9- Kinetin- 100 ppm, T10- 150 ppm . Study results revealed that, there was significant statistical variation in plant height (cm), Number of leaves per plant , collor width ( cm) collar width (cm ) Polar Diamter ( cm ) Equatorial diameter (cm) , Yield per plot, Marketable yield, Total yield ( q/ ha). Basis on the pooled the data study result revealed that maximum plant height(34.05cm at 30 DAT, 51.15 at 60 DAT and 69.90 cm DAT) , number of leaves(6.60 at 30 DAT, 8.90 at 60 DAT and 13.60 at 90 DAT) , Fourth leaf length ( 23.60 cm at 30 DAT, 45.0 cm at 60 DAT and 48. 93 cm at 90 DAT) fourth leaf width( 0.52at 30 DAT, 1.32 at 60 DAT, 1.70 at 90 DAT) , collor width ( 1.24 m), Equatorial diameter ( 6.35), Polar diameter (5.75 cm), Bulb weight ( 41.02) , Bulb yield per plot ( 2.71 kg), marketable yield ( 257.21) and yield per ha. (270.75q).
Keywords: Plant growth regulators, onion, marketable yield