INTEGRATED NUTRIENT MANAGEMENT STUDIES IN TUBEROSE (Polianthes tuberosa L.)
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Date
2010
Authors
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Publisher
UHF,NAUNI,SOLAN
Abstract
ABSTRACT
The present investigation entitled, “Integrated nutrient management studies in tuberose (Polianthes
tuberosa L.) were carried out at the Experimental Farm of the Department of Floriculture and Landscaping of
Dr. Y.S. Parmar university of Horticulture and forestry, Nauni, Solan (H.P.) during 2009-2010. The experiment
was laid out in Randomized Block Design having 16 treatment combinations of chemical fertilizers and
biofertilizers, replicated thrice in a plot size of 1m x 1m and spacing 25cm x25cm. The observations were
recorded on days taken for emergence of bulbs, percent sprouting of bulbs, number of leaves per plant, plant
height, number of days taken for spike emergence, spike length, number of days taken for basal florets opening,
number of florets per spike , duration of flowering, fresh weight of spike, fresh weight of 100 florets, florets
size, number of spike obtained per plant, number of bulbs produced per plant, average root length per plant,
weight of bulbs per plant, average size of bulbs per plant and analysis of NPK in the soil.
The results revealed improvement in growth and flowering parameters of tuberose when fertilized with
biofertilizers i. e. Azotobacter and PSB (each @ 5 g/ plant) alone and in combinations with chemical fertilizers.
The earliest emergence of bulbs (8.16 days), more number of leaves (72.56), tallest plants (106.70 cm), early
emergence of spike (61.10 days), longest spike (96.70 cm), early opening of basal florets (72.56 days), more
number of florets (38.33), heaviest spike (45.68 g), maximum weight of 100 florets (122 g), produced more
bulbs (25.83), longest root (19.97 cm) and more availability of K (149.94) were recorded in treatment consisting
of Azotobacter + PSB + NPK @ 15, 11.2, 9.3 g/ m2. Longest duration of flowering was recorded in the
treatment consisting of Azotobacter + NPK @ (15, 11.2, 9.3g/ m2), whereas, largest floret in PSB + NPK @ 15,
11.2, 9.3 g/m2, however, heaviest and largest bulbs were recorded in PSB + NPK @ 20, 15, 12.5g/m2. The
availability of N and P content was maximum in Azotobacter + PSB +NPK @ 20, 15, 12.5 g/m2. However,
these all parameters were found to be statistically at par with treatment consisting of Azotobacter + PSB + NPK
@ 15, 11.2, 9.3 g/ m2. The parameters per cent sprouting of bulbs and number of spikes obtained per plant were
not affected significantly by the different treatments
Description
Keywords
sowing, intercropping, wheats, tillage equipment, seed drilling, crops, mustard, fertilizers, land resources, chickpeas