Abstract
An investigation was carried out at Horticultural College and Research Institute, Tamil Nadu Agricultural University, Periyakulam to find out the effect of various irrigation regimes and manurial treatments on soil and leaf nutrient status of noni (Morinda citrifolia L.). The experiment was carried out in split plot design with irrigation regimes on main plot and manurial treatments on sub plot. Among the treatment combination, M2S7 (100% WRc through drip irrigation + 100% recommended dose of NPK through inorganic fertilizers) showed the highest soil available nitrogen, phosphorus and potassium content. The same treatment combination recorded the increased leaf nitrogen, phosphorus and potassium content during vegetative, flowering and harvesting stages. Key words: Morinda citrifolia L., drip irrigation, check basin method of irrigation, farmyard manure, vermicompost, coir pith compost, inorganic fertilizers, soil nutrient status, leaf nutrient status.
Highlights
Morinda citrifolia L. popularly known as Indian Noni or Indian mulberry is an ever green small tree bearing flowers and fruits throughout the year
The treatment S7 (100% recommended dose (RD) of NPK through inorganic fertilizers) registered the increased soil available potassium content (363.12, 341.94 and 331.65 kg ha-1) and this was followed by S4 (50% farmyard manure (FYM) + 50% VC) with 358.08, 336.90 and 326.70 kg ha-1 in vegetative, flowering and harvesting stages, respectively
Pertaining to the sub plots, the treatment S7 (100% RD of NPK through inorganic fertilizers) resulted in the superior score for leaf potassium content (1.131, 1.374 and 1.267%) and this was followed by S4 (50% FYM + 50% VC) with 1.109, 1.352 and 1.242% in vegetative, flowering and harvesting stages, respectively; while lesser leaf potassium content (0.868, 0.979 and 0.862%) were obtained from the treatment S8
Summary
Morinda citrifolia L. popularly known as Indian Noni or Indian mulberry is an ever green small tree bearing flowers and fruits throughout the year. Noni has been used in folk remedies by Polynesians for over 2000 years and is reported to have a wide range of therapeutic effects including antibacterial, antiviral, antifungal, antitumor, analgesic, anti-inflammatory and immune enhancing effects. It has been regaining popularity as an herbal treatment and is beginning to show resurgence as a cultivated plant. Measurable decrease in fertilizer consumption without compromising the yield and quality of any crop can be made practically possible through organic inputs
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