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VOL. 7, ISSUE 1 (2025)
Aerial spraying of nutrients and bio-fungicide for enhancing grain yield, grain quality and economics of rice in Kuttanad, Kerala
Authors
V S Devi, Anu Susan Sam, Ammu Punnoose
Abstract
An experiment was carried out in two clusters
of rice fields (polders) in Upper Kuttanad and North Kuttanad during November
2022 to February 2023 to investigate the effect of aerial foliar spray of
nutrients and bio-fungicide on yield, grain quality and economics of paddy
crop. Aerial spraying of treatments involving bio-fungicide, Pseudomonas
fluorescence and macro nutrient formulation KNO3 (13% N and 45%
K) and secondary and micro nutrient mixture of Kerala Agricultural University,
KAU Sampoorna multimix (Mg, S, B, Zn, Cu, Fe, Mn, Mo) was carried out at
different crop stages alone or in combinations. Seven treatments viz.,
T1- Sampoorna (0.5%) @30 DAS, T2- KNO3 (1 %) @80 DAS, T3- Sampoorna
(0.5%) @30 DAS + KNO3 (0.5%) @80 DAS, T4- Pseudomonas (2%) @30 DAS +
Sampoorna (0.5%) @80 DAS, T5- Pseudomonas (2%) @30 DAS+ Sampoorna (0.5%) + KNO3
(0.5%) @80 DAS, T6- Pseudomonas (2%) @ 70DAS + Sampoorna (0.5%) + KNO3
(0.5%) @80 DAS, T7- No foliar spray, were applied randomly with three
replications using unmanned aerial vehicle (drone). The foliar applications
were carried out as a supplement to soil application of recommended dose of
nutrients 90:45:45 kg NPK ha-1 and burnt lime as per Kerala
Agricultural University package of practices recommendations. Observations on
number of panicles, number of grains per panicle, test weight, percentage of
blackened grains and grain yield were recorded and analysed with randomized
completely block design. The effect of aerial spraying treatments was found to
be significant on yield, test weight and percentage of blackened grains in
field trials conducted in paddy fields of Upper Kuttanad and North Kuttanad.
The treatments involving either KNO3 applied at 80 days after
sowing, coinciding with the flag leaf stage, alone or in combination with
bio-fungicide or multi nutrient mix Sampoorna showcased better yield, grain
quality attributes as well as the economics of rice crop.
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Pages:112-116
How to cite this article:
V S Devi, Anu Susan Sam, Ammu Punnoose "Aerial spraying of nutrients and bio-fungicide for enhancing grain yield, grain quality and economics of rice in Kuttanad, Kerala". International Journal of Agriculture and Plant Science, Vol 7, Issue 1, 2025, Pages 112-116
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