Vol. 10, Issue 9 (2021)

Author(s):
Sandeep Kumar, Jitendra Singh Prerak Bhatnagar, Rahul Chopra, Prahlad VC and CK Arya

Abstract:
The trial was conducted on newly established orchard of mandarin plants of cv. Nagpur Mandarin growing under squire planting system (6 x 6 m) with three irrigation levels, i.e., 100, 80 and 60 per cent ETc, three fertigation levels, i.e., 100, 80 and 60 per cent recommended dose of fertilizers and putting conventional method as check (Control: Irrigation at 100% ETc by surface irrigation and 100% RDF as soil application). The experiment revealed that among various irrigation schedule treatments, application of treatment I₁ (100% ETc) was observed significantly superior over other treatments with regard to growth and development parameters in which the increase in rootstock girth (50.40%), scion girth (51.26%), number of leaves/shoot (53.63%), number of nodes/shoot (1.87%) and number of internodes/shoot (1.92%). Among treatments of fertigation, maximum percentage increase in rootstock girth (57.10%), scion girth (57.29%), number of leaves/shoot (61.45%), number of nodes/shoot (1.94%) and number of internodes/shoot (2.00%) was observed in the treatment F₁ (100% RDF).With respect to interaction effect of irrigation schedule and fertigation levels, all plant parameters were pointed out in treatment I₁F₁ (Irrigation Scheduling at 100% ETc + Fertigation 100% RDF) which was significantly higher over all other treatments of these combinations through it was found at par with treatment I₂F₁ (Irrigation Scheduling at 80 ETc + Fertigation 100% RDF).