Effect of organic manures and biofertilizers on growth and flower yield of tuberose (Polianthes tuberosa L.)
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Date
2018
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CCSHAU
Abstract
The present study entitled “Effect of organic manures and biofertilizers on growth and flower yield
of tuberose (Polianthes tuberosa L.)” cv. Prajwal was carried out during 2017-18 at Botanical Garden, CCS
Haryana Agricultural University, Hisar. The investigation composed of two experiment viz., (i) Effect of
organic manures and biofertilizers on growth and flower yield of tuberose (three organic manures i.e sand ,
FYM, vermicompost with different composition, inorganic manures and two biofertilizers i.e.,
Azotobacter,Pseudomonas sp. with eleven treatments and four replications) (ii) To evaluate plant growth
promoting rhizobacteria for growth and flower yield of tuberose (four strains of Bacillus viz., SYB101,
RCA3, RCA7, HCA61 and two strains of Pseudomonas viz., CP109, JMM16 and three growing media, i.e.,
sand, sand+FYM(2:1), sand+vermicompost(3:1) . With the possible combination of organic manures and
biofertilizers. Maximum plant height, length of leaves, number of leaves, length of spike, length of rachis,
stem diameter, number of florets per spike, number of florets opened per spike, ,spike weight,number of
bulbs per clump, diameter of bulb, weight of bulb and minimum florets unopened per spike were observed
with the application of sand + vermicompost (4:1) + biofertilizers (Azotobacter&Pseudomonas sp.) .
Rhizobacteria and growing media significantly influenced the growth, flowering and bulb characters of
tuberose. Among rhizobacteria Pseudomonas sp. CP109 and Bacillus sp. HCA61 significantly increased
the growth characters and flower yield of tuberose and among growing media initially sand followed by sand
+ FYM (2:1) was found best. The result indicates in interaction of rhizobacteria and growing media, Bacillus
sp. HCA61 and Pseudomonas sp. CP109 with sand followed by sand + FYM (2:1) were found potent in
increasing growth and flower yield of tuberose.
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