Vol. 11, Issue 6 (2022)

Author(s):
Simrandeep Kour, Arti Sharma, Abhijit Samanta, Amit Jasrotia, Deep Ji Bhat, BK Sinha, Mahital Jamwal and Shilpy Kumari

Abstract:
This study addresses water-saving irrigation strategies, including regulated deficit irrigation (RDI) at 75% and 50% crop ETc and partial root-zone drying (PRD) at 75% and 50% ETc to investigate the response of the mango (Mangifera indica L.) drip system in the field on a sandy loam soil during years 2017 and 2018. Results revealed that the date of appearance of panicle, full bloom was recorded earlier in the treatments T₆ i.e (RDI _{75% ETc} + F) as compared to the treatments not subjected to fertigation i.e both T₂ (RDI _{75% ETc}), T₃ (RDI _{75% ETc}), T₄ (RDI _{75% ETc}) and T₅ (RDI _{75% ETc}) whereas, panicle appearance and full bloom was last (100% ETc) respectively in plants treated with full irrigation (T₁) as compared both fertigated and non fertigated plants during both the years, respectively whereas longest duration of flowering was recorded in treatments receiving fertigation i.e T₆ (RDI _{75% ETc} + F). The panicle length (26.57 cm and 25.18 cm) and panicle breadth (13.53 cm and 11.78 cm) was recorded maximum under T₇ comprising of PRD _{75% ETc} + F and minimum panicle length (18.52 cm and 17.37 cm) and breadth (10.88 cm and 9.52 cm) was recorded under T₁₀ i.e no irrigation whereas tree height, spread and stock girth and scion girth was found maximum at T_{1 100% ETc}. The maximum fruit weight, volume and size was recorded in T₇ PRD _{75% ETc} + Fertigation and minimum was recorded in treatment T₁₀ no irrigation. The benefit cost ratio was found maximum under treatment T₇ comprising of PRD _{75% ETc} + F.