Effect of organic manures on growth, yield and economics of onion (Allium cepa L.) in agroclimatic condition of Satna region

Abstract

The field experiment was conducted during winter season of 2021-22 at the Research Farm, A.K.S. University, Satna (M.P.) The soil of the experimental field was silty clayloam having pH 7.91, electrical conductivity 0.18 dS/m, organic carbon 0.47%, available N, P2O5 and K2O 174.62, 12.14 and 200 kg/ha, respectively. The total rainfall received during crop season 2021-22 was 12.01 mm. The treatments comprised three levels of poultry manure (2, 5 and 7 t/ha) and four levels of vermicompost (2, 5, 7 and 10 t/ha). Thus 12 treatment combinations (T1 - Poultry manure 2 t/ha + vermicompost 2 t/ha,T2 - Poultry manure 2 t/ha + vermicompost 5 t/ha, T3 - Poultry manure 2 t/ha + vermicompost 7 t/ha,T4 - Poultry manure 2 t/ha + vermicompost 10 t/ha, T5 - Poultry manure 5 t/ha + vermicompost 2 t/ha, T6 – Poultry manure 5 t/ha + vermicompost 5 t/ha, T7 - Poultry manure 5 t/ha + vermicompost 7 t/ha,T8 - Poultry manure 5 t/ha + vermicompost 10 t/ha,T9 - Poultry manure 7 t/ha + vermicompost 2 t/ha, T10 - Poultry manure 7 t/ha + vermicompost 5 t/ha,T11 - Poultry manure 7 t/ha + vermicompost 7 t/ha and T12 - Poultry manure 7 t/ha + vermicompost 10 t/ha) were laid out in a randomized block design keeping three replications. Onion variety Agrifound Light Red was transplanted on 29 October 2021 following the cultural practices as per treatments. The crop was grown as per recommended package of practices. The crop was harvested on 16 April 2022. The periodical field and laboratory observations were recorded and presented after statistical computation. The TSS in mature bulbs was determined by hand refract meter.