RESPONSE OF COLOURED RICE CULTIVARS TO ZINC NUTRITION
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Authors
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HIMASRI K
Agricultural College, Bapatla - 522101, Acharya N.G. Ranga Agricultural University, Guntur, Andhra Pradesh, India
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ANNY MRUDHULA K
Agricultural College, Bapatla - 522101, Acharya N.G. Ranga Agricultural University, Guntur, Andhra Pradesh, India
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SRINIVAS MANUKONDA
Agricultural College, Bapatla - 522101, Acharya N.G. Ranga Agricultural University, Guntur, Andhra Pradesh, India
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SUVARNA LATHA A J
Agricultural College, Bapatla - 522101, Acharya N.G. Ranga Agricultural University, Guntur, Andhra Pradesh, India
Keywords:
Coloured rice, growth, nutrient uptake, yield, zinc fertilizationAbstract
An experiment was conducted in the Farm of agricultural college, Bapatla, during kharif,
2023 to examine the response of zinc foliar fertilisation on the growth, yield attributes, yield and
nutrient uptake of coloured rice (Oryza sativa L.). The experiment was laid by using split-plot
design with three replications. The main plot contained four rice cultivars: M1- Navara, M2- BPT
2858, M3- BPT-2841 and M4- Kujipatalia. In the sub-plots, ZnSO4
foliar spraying was done at
various stages: S1- No zinc, S2- Application of ZnSO4
@ 0.2% at tillering stage, S3- Application of
ZnSO4
@ 0.2% at tillering and panicle initiation stages and S4- Application of ZnSO4
@ 0.2%
at tillering, panicle initiation and booting stages. The results indicated that the Kujipatalia variety
(M4
) produced the maximum number of tillers, dry matter accumulation, productive tillers per
square meter, panicle length, total grains per panicle, grain yield (4480 kg ha-1), straw yield,
harvest index, and nutrient uptake. Foliar application of ZnSO„ at 0.2% during the tillering,
panicle initiation, and booting stages (S4
) was found to be significantly superior to other treatments,
except for S3
. Conversely, the Navara variety (M1
), when not received foliar zinc application,
recorded the lowest values of all the parameters of coloured rice cultivars. However, it displays
Kujipatalia variety shows highest yield and yield attributes relative to the other cultivars.
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