INTEGRATED NUTRIENT MANAGEMENT IN GARDEN RUE (Ruta graveolens L.)
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Date
2018-07
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University of Horticultural Sciences, Bagalkot. (College of Horticulture, Bengaluru)
Abstract
A field investigation on Integrated nutrient management in garden rue (Ruta graveolens L.)was carried out at the Department of Plantation, Spices, Medicinal and Aromatic Crops, College of Horticulture, UHS Campus, GKVK, Bengaluru during kharif,2017. The experiment was laid out in randomized complete block design with twelve treatments involving different combinations and levels of organic, inorganic and biofertilizers with three replications. Among the different levels and combinations of organic,inorganic and biofertilizers tried, application of 75 % RD +Azotobacter+ Azospirillum+ AM @ 10 kg / ha had a beneficial effect on growth, yield and quality parameters. Significantly higher and maximum plant height (62.60 cm), number of primary branches (16.40), stem girth (17.50 mm), plant spread (585 cm2), total chlorophyll content (2.89 mg/g of tissue), root volume (17.45 cc), fresh and dry weight of plant at 45 DAP (39.74 and 17.49 g respectively) and 90 DAP( 110.62 and 47.72 g respectively) were recorded. Similarly the same treatment had a significant positive influence on initiation of flower bud (104.7days), fifty per cent flowering (126 days),fresh and dry yield per hectare (19.38 and 6.21 t respectively),rutin content (3.18 %), rutin yield (197.20 kg ha-1). Which also recorded maximum available NPK (252.45, 48.75, 188.45 kg ha-1respectively) in soil, NPK content (1.11, 0.28 and 0.80 % respectively)in plant and maximum AM infection (88.89 %). Maximum population of Azotobacter (16.44 CFU / g of soil) was recorded in 75 % RD +Azotobacter@ 10 kg / ha (T6). Highest net returns (Rs 90,231 / ha) and B:C ratio (1.95) were obtained with the application of 75 % RD +Azotobacter+ Azospirillum+ AM @ 10 kg / ha. The results of the present investigation clearly documented that, the combined application of 75 % RD +Azotobacter+ Azospirillum+ AM @ 10 kg / ha was superior in terms of overall growth, yield and quality of garden rue and also reduce the 25 per cent of inorganic fertilizers anda step towards the eco-friendly farming system which will be well received by both producers and consumers.