EFFECT OF NANO FERTILIZER ON GROWTH, YIELD, NITROGEN UPTAKE AND ECONOMICS OF RICE IN ALLUVIAL SOILS OF GODAVARI ZONE OF ANDHRA PRADESH
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Authors
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RAMESH BABU P V
Regional Agricultural Research Station, Maruteru – 534122 Acharya N.G. Ranga Agricultural University, Guntur, Andhra Pradesh, India
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SRINIVAS M
Regional Agricultural Research Station, Maruteru – 534122 Acharya N.G. Ranga Agricultural University, Guntur, Andhra Pradesh, India
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DAKSHINAMURTHY K
Regional Agricultural Research Station, Maruteru – 534122 Acharya N.G. Ranga Agricultural University, Guntur, Andhra Pradesh, India
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SREENIVAS CH
Regional Agricultural Research Station, Maruteru – 534122 Acharya N.G. Ranga Agricultural University, Guntur, Andhra Pradesh, India
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ROJA V
Regional Agricultural Research Station, Maruteru – 534122 Acharya N.G. Ranga Agricultural University, Guntur, Andhra Pradesh, India
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VERONICA N
Regional Agricultural Research Station, Maruteru – 534122 Acharya N.G. Ranga Agricultural University, Guntur, Andhra Pradesh, India
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SRINIVAS T
Regional Agricultural Research Station, Maruteru – 534122 Acharya N.G. Ranga Agricultural University, Guntur, Andhra Pradesh, India
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GIRIJA RANI M
Regional Agricultural Research Station, Maruteru – 534122 Acharya N.G. Ranga Agricultural University, Guntur, Andhra Pradesh, India
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SAHADEVA REDDY B
Regional Agricultural Research Station, Maruteru – 534122 Acharya N.G. Ranga Agricultural University, Guntur, Andhra Pradesh, India
Keywords:
Grain yield, Nano urea, Nutrient uptakeAbstract
A field trial was conducted during the Kharif and Rabi seasons of 2023–24 to evaluate the
efficacy of nano urea (NU) and super nano urea (SNU) on the growth, yield, nutrient uptake, and
economics of rice. The experiment consisted of 11 treatments: T1–Control (0% N; 100% P & K);
T2–Recommended Fertilizer Dose (RDF) representing 100% RDN (Kharif: 90-60-60 kg NPK ha-1;
Rabi: 180-90-60 kg NPK ha-1); T3–50% RDN; T4- 50% RDN + two sprays of conventional urea
@1.0% at active tillering (AT) and panicle initiation (PI) stages; T5- 50% RDN + two sprays of NU
@0.4% at A.T & PI; T6- 50% RDN + three sprays of NU @0.4% at A.T, PI & heading; T7- 50% RDN
+ two sprays of SNU @0.25% at A.T & PI; T8- 50% RDN + two sprays of SNU @0.5% at A.T & PI;
T9- 50% RDN + two sprays of SNU @1.0% at A.T & PI; T10- 33% RDN + three sprays of SNU
@0.5% at A.T, PI & heading; and T11- 66% RDN + one spray of SNU @0.5% at heading. The
resultsrevealed that the application of 50% RDN with two foliar sprays of nano urea at the active
tillering and panicle initiation stages (T8
) proved effective in enhancing rice growth, yield attributes,
grain and straw yields, economic returns and nitrogen uptake. However, this treatment performed
on par to the 100% RDN (T2
) across two consecutive seasons on alluvial soils of the Godavari
zone.
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