Response of optimization and sufficiency index in Bt cotton (Gossypium spp.) through optical sensor based nitrogen management

نویسندگان

چکیده

To break the productivity barriers in Bt cotton (Gossypium spp.), adoption of optical sensor based nitrogen (N) management practices is need hour. In light this, a field experiment was conducted at main Agricultural Research Station, Dharwad, Karnataka during rainy (kharif) season 2019 and 2020 to optimize response index (RI) sufficiency (SI) for real time through sensors. Experiment split plot design with 16 treatment combinations having 2 genotypes (main plot) 8 N (subplot). Pooled data indicated that non-significant (P=0.3480) difference seed yield observed (First Class Ajeet 155 recorded 3313 3159 kg/ha, respectively). Seed yields varied significantly (P<.0001) due different sensor-based practices. supplementation 1.1–1.5 RI 81–90% SI (4460 4412 respectively) produced higher but on par RDF (4386 kg/ha) saving 15 kg sensors both years. Interactions were found (P>.9999). Similarly, number good bad opened bolls, total sympodials, per plant, boll weight, lint harvest RDF.

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ژورنال

عنوان ژورنال: Indian Journal of Agricultural Sciences

سال: 2022

ISSN: ['0019-5022', '2394-3319']

DOI: https://doi.org/10.56093/ijas.v92i10.118837