Bio-priming : a precision approach to augment seed emergence and yield in Ajwain (Trachyspermum ammi)
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Authors
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B.K. Mishra
ICAR-Indian Agricultural Research Institute, Pusa, New Delhi, India
Author
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Chetan Kumar Jangir
ICAR-National Research Centre on Seed Spices, Ajmer, Rajasthan, India
Author
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S.N. Saxena
ICAR-Indian Institute of Millets Research, Regional Research Station on Pearlmillet, Gudamalani, Rajasthan, India
Author
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Y.K. Sharma
ICAR-National Research Centre on Seed Spices, Ajmer, Rajasthan, India
Author
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Krishna Kant
ICAR-National Research Centre on Seed Spices, Ajmer, Rajasthan, India
Author
Keywords:
bio-priming, ajwain, soaking agent, seed and seedling quality, yield.Abstract
Bio-priming, a novel seed treatment technique, has garnered attention for
its capacity to enhance seed germination, crop growth, and yield. This
study aimed to assess the efficacy of Trichoderma (commercial strains)
and Bacillus and Pseudomonas (newly isolated strains) as sole inoculants
and co-inoculants with soaking agents during seed bio-priming to enhance
seed germination and initial seedling growth of ajwain. A randomized block
design (RBD) was employed, comprising seven treatments replicated
-1
three times each. The highest seed yield (2510.247 kgha ) and associated
attributes were observed in treatment T5 (Chitosan + Trichoderma viride)
-1
compared to the control (2068.51 kg ha ). Treatment T3 (Chitosan +
Bacillus paramycoides + Pseudomonas aeruginosa) improved all
parameters, including final germination, shoot length, root length, plant
height, primary and secondary branches, and test weight, compared to the
control. The correlation analysis revealed positive associations between
-1
yield and plant height, umbellateumbelkgha , seed emergence,
-1 secondary branch, and umbelplantkgha . Consequently, Trichoderma
strains followed by Bacillus paramycoides + Pseudomonas aeruginosa
combined with chitosan exhibit potential as both single inoculants and co-
inoculants for ajwain bio-priming, pending further validation through
farmer field evaluations
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