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Birsa Agricultural University, Ranchi

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Subject: Soil Science and Agriculture Chemistry × Author: Juhi Tiwari × Start date: 2023 ×
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    ThesisItemOpen Access
    EFFECT OF ZINC APPLICATION ON RICE IN RED AND LATERITIC SOIL
    (Birsa Agricultural University, Ranchi, 2023) Juhi Tiwari; Arvind Kumar
    The present investigation “Effect of Zinc application on Rice in red and lateritic soil” was carried out on the ongoing Experiment which started in 2018 at Research Farm (Sub zone IVth of ACZ VIIth, Hill and plateau region) of Soil Science department with collaboration of AICRP-MSPE and State plan BAU, Ranchi, Jharkhand. Experiment was designed in Factorial RBD with three phasing of Zn application (P1: only 1st Year, P2: After one year gap, P3: In each year) and four Zn application levels with one absolute control. Zinc was applied in Rice crop and wheat was grown on residual soil level of Zn. Rice crop variety IR 64 drt 1(DRR Dhan 42) was taken as test crop in year 2021-22 curricular research programme. Grain yield of rice significantly increased due to Zn application levels and also due to the phasing impact of Zn. Percent increased in rice grain yield was observed lowered 7.19% only at P1 (where Zn was applied once three year back) followed by P2 and P3 phasing of Zn application. Rice grain yield was observed 29.28 q/ha at 2.5 kg/ha Zn application. Yield of rice increased with increasing levels of Zn application and found 18.04% higher to control at 10.0 kg/ha Zn application level. Straw yield also followed similar trend of rice grain yield and found maximum 76.71 q/ha at 10.0 kg/ha Zn application level (21.91% higher to control yield 62.89 q/ha). Zinc content of rice grain was significantly affected due to Zn levels, Phasing, Interaction between Zn X P and also with control VS others. Lower Zn content 23.65 mg/kg was observed in rice grain at Zn application level 2.5 kg/ha and higher 26.25 mg/kg ha, which was 16.09% higher to the control (22.65 mg/kg). Zinc content in straw yield was observed at 5.0, 7.5 and 10.0 kg/ha Zn application and was found statistically at par, while higher Zn content 83.33 mg/kg was found at Zn application done in each year. DTPA extractable Zn was found about more than 40% higher to control (1.46 mg/kg) treatment. Similar trend of Zn content in phasing also was observed and percent increase to control followed trend as (P1 < P2 < P3). Zinc content was observed in upper leaf (23.90 - 27.91 mg/kg), Middle leaf (25.86 - 28.12 mg/ha), lower leaf (26.38-29.76 mg/kg), stem (73.83-80.55 mg/kg) and in rice root 90.5 - 94.73 mg/ha respectively at 2.5 and 10.0 kg/ha Zn application. Total Zn uptake (Yield + Straw) was found higher 404.66 and 442.28 g/ha respectively at 10.0 kg/ha Zn application level and at Zn application in each year. DTPA extractable Cu, Fe, Mn, Pb, Ni, and Cd was found non statistically non-significant due to application of Zn in soil and also phasing impact, While DTPA extractable Zn was significantly affected and found lower 1.35 mg kg-1 at Zn1xP1 treatment and maximum 2.51 mg kg-1 at Zn4xP3 treatment. Soil properties like pH and OC (g/kg) was statistically found none significant and similarly available N, K and P did not affected due to Zn application and Phasing impact in soil.