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Journal of Environmental Biology

pISSN: 0254-8704 ; eISSN: 2394-0379 ; CODEN: JEBIDP
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    Abstract - Issue Nov 2016, 37 (6)                                     Back


nstantaneous and historical temperature effects on a-pinene

Effect of iron application on iron nutrition of aerobic rice

grown in different soils

 

 B.L. Meena1*, R.K. Rattan2, S.P.Datta2 and M.C. Meena2

1Project Coordinating Unit, ICAR-Central Soil Salinity Research Institute, Karnal-132 001, India

2Division of Soil Science and Agricultural Chemistry, ICAR-Indian Agricultural Research Institute, New Delhi-110 012, India

*Corresponding Author E-mail: blmeena2008@gmail.com

 

 

 

Publication Data

Paper received:

26 April 2016

 

Revised received:

10 June 2016

 

Accepted:

05 August 2016

  

Abstract

 

Enhancing the content of Fe in edible portion of rice for improving human health is a global challenge. A greenhouse experiment was conducted to evaluate the relative effectiveness of soil, foliar and seed treatment of Fe in alleviating Fe-deficiency using two rice cultivars (IR-64 and Pusa Sugandh-3) grown on alkaline, calcareous, acid and lime-treated acid soils. Results showed that on an average, soil application of Fe improved the available Fe status of soil (8.14 mg kg-1) over control (6.79 mg kg-1). The foliar application of Fe (3% FeSO4.7H2O solution, thrice 40, 60 and 75 days after sowing of rice) was more effective and economical in enhancing the yield (9.42%) as well as increasing Fe content (3.48%) of milled rice as compared to soil application (67 mg FeSO4.7H2O kg-1). Among the soils, acid soil (without lime) produced highest yield (27.4 g pot-1) of aerobic rice followed by alkaline (21.2 g pot-1), calcareous (20.0 g pot-1) and lime-treated acid soils (17.7 g pot-1). Pusa Sugandh-3 (23.4 g pot-1) performed better under aerobic condition compared to IR-64 (19.7 g pot-1). Ferrous-iron content in rice plants proved to be a better index of Fe nutrition status compared to total plant Fe and chemically extractable soil Fe. The Fe2+ content of ≥ 42 mg kg-1 in plants (on dry weight basis) appeared to be an adequate level at 45 days after sowing for rice grown under upland aerobic condition.?????????

 

 Key words

Aerobic rice, Biofortification, Fe-deficiency, Foliar application, Seed treatment

 

 

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