Abstract
Aim:
The present investigation was carried out to study the effect of foliar
application nano-fertilizers P, K and Zn on yield, nutrient content and
uptake by wheat and soil microbial properties in sub-humid southern plains of
Rajasthan.
Methodology: The experiment was laid out in triplicate following
randomized block design with fifteen treatments comprising foliar application
of different doses of Nano P, K and Zn.
Results:
Foliar application of 1st spray of Nano Zn at 14 days after sowing
(DAS) + 2nd spray of Nano Zn at 28 DAS along with 100% recommended
dose of fertilizers (RDF) significantly (P=0.05) increased yield attributes
and nutrient uptake in wheat. The significantly (P=0.05) maximum microbial
population (bacteria and fungi) and microbial biomass-C was obtained with 1st
spray of Nano P at 14 DAS + 2nd spray of Nano P at 28 DAS along with
100% recommended dose of fertilizers (RDF).
Interpretation: Foliar application of nano fertilizers
led to significant improvement of crop productivity of wheat in sub-humid
southern plain of Rajasthan. Moreover, the foliar application of
nano-fertilizers, i.e., Nano P also stimulated microbial growth by providing
nutrients and directly increased their population in soil.
Key
words:
Biomass-C, Foliar application, Nano-fertilizers, Soil microbial population,
Wheat productivity
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