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International Journal of Applied Agricultural & Horticultural Sciences
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Language : English
DOI Prefix : 10.37322
P-ISSN : 0974-0775
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Vol. 7 (5) : September-October 2016 issue
Green Farming Vol. 7 (5) : 1134-1137 ; September-October, 2016
Study of translocation pattern of zinc at different growth stages in rice
S. FIRDOUS1*, B.K. AGARWAL2, ARVIND KUMAR3, A. WADOOD4 and D.K. SHAHI5
Department of Soil Science and Agricultural Chemistry, Birsa Agricultural University, Ranchi – 834 006 (Jharkhand)
Designation :  
1Ph.D. Scholar *(sdf.ssac@gmail.com), 2,4,5Chief Scientist, 3Asstt. Professor
Subject : Soil Science & Agric. Chemistry; Soil Health & Soil Conservation Engg.
Paper No. : P-4468
Total Pages : 4
Received : 24 December 2015
Revised accepted : 20 August 2016
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Citation :

S. FIRDOUS, B.K. AGARWAL, ARVIND KUMAR, A. WADOOD and D.K. SHAHI. 2016. Study of translocation pattern of zinc at different growth stages in rice. Green Farming Vol. 7 (5) : 1134-1137 ; September-October, 2016

ABSTRACT
A field experiment was conducted, in kharif 2012-13, at the Research Farm of Department of Soil Science and Agricultural Chemistry, Birsa Agricultural University, Ranchi (Jharkhand) to study the impact of Zn application and its translocation into various plant parts of rice. The recommended dose of N, P and K was applied at 80 N: 40 P2O5: 30 K2O kg ha-1 with soil application of Zn at the rates of 0, 5, 10 kg ha-1 as ZnSO4 .H2O and 5 Kg Zn ha-1 along with 2 foliar applications (0.5%) at tillering and before flowering stage. The concentration of zinc was monitored at tillering, pre-flowering and panicle initiation and maturity stages. At tillering stage concentration was determined considering whole plant. Thereafter, at the pre-flowering stage, plant parts were divided into lower leaf, upper leaf and stem in which the Zn concentration was recorded. At panicle initiation stage plant part was divided into lower leaf, middle leaf, upper leaf, panicle and stem whereas straw, brown rice and husk were considered at maturity stage. The pooled data revealed that the magnitude of Zn concentration (mg kg-1) in different plant parts was found in an order; upper leaf (36.2 – 42.7) < lower leaf (42.8 – 48.5) < stem (68.6 – 75.1) at pre- flowering stage while at panicle initiation stage the order was middle leaf (13.6- 17.9) < upper leaf (16.9 – 18.2) < stem (19.2 – 25.2) < panicle (21.1 – 25.7) < lower leaf (20.0 – 34.2). At maturity the magnitude of Zn concentration was found in an order; husk (22.9 – 24.3) < brown rice (21.6– 25.1) < straw (67.7 – 74.7) was recorded. Highest concentration and translocation of zinc was recorded in all stages and all plant parts where application of 5 kg Zn ha-1 + 2 foliar sprays of ZnSO4. H2O (0.5%). The translocation of zinc was higher in stem and straw than other plants parts, particularly at maturity.
Key words :
Grain & straw yield, Growth stages, NUE, Rice, Zinc content.