EFFECT OF ZINC APPLICATION ON GROWTH, RE-MOBILISATION EFFICIENCY AND GRAIN FORTIFICATION IN FINGER MILLET (Eleusine coracana (L.) Gaertn)

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dc.contributor.advisorSANDHYA RANI, P.
dc.contributor.authorMRUDULA, G.
dc.date.accessioned2022-08-08T11:34:43Z
dc.date.available2022-08-08T11:34:43Z
dc.date.issued2022-08-08
dc.descriptionEFFECT OF ZINC APPLICATION ON GROWTH, RE-MOBILISATION EFFICIENCY AND GRAIN FORTIFICATION IN FINGER MILLET (Eleusine coracana (L.) Gaertn)en_US
dc.description.abstractThe present investigation entitled “Effect of zinc application on growth, re-mobilisation efficiency and grain fortification in finger millet (Eleusine coracana (L.) Gaertn)” was conducted in two consecutive years during kharif, 2019 and 2020 at S.V. Agricultural College, Tirupati, Andhra Pradesh. The experiment was laid out in split plot design with three replication and two varieties Vakula (V1) and Tirumala (V2) as main treatments; seven zinc treatments viz., Control (T1), 60-30-20 of NPK + FYM @ 10t ha-1 (T2), T2 + soil application of ZnSO4 @ 25 kg ha-1 as basal (T3), T2 + soil application of chelated zinc sulphate @ 5 kg ha-1 as basal (T4), T2 + foliar spray of 0.2% ZnSO4 at ear head emergence stage (T5), T2 + foliar spray of 0.2% ZnSO4 at grain filling stage (T6), T2 + foliar spray of 0.2% ZnSO4 at ear head emergence and grain filling stages (T7) as sub treatments. Crop response to different treatments was measured in terms of quantitative and qualitative indices viz., morphological, physiological, yield and its attributes, quality parameters of grain, zinc partitioning among plant parts and re-mobilization of zinc to grains. Between the varieties, Tirumala (V2) variety recorded higher quantitative and qualitative indices compared to Vakula (V1) variety. Among the sub-treatments, upto ear head emergence stage, T2 + soil application of ZnSO4 @ 25 kg ha-1 as basal (T3) recorded significantly higher growth parameters, followed by T2 + soil application of chelated zinc @ 5 kg ha-1 as basal (T4). After ear head emergence stage, T2 + foliar spray of 0.2% ZnSO4 at ear head emergence and grain filling stages (T7) recorded significantly highest growth, yield and quality parameters of finger xv millet. The interaction effects revealed that the dry matter production and growth parameters which represent sink activity viz., crop growth rate (CGR), net assimilation rate (NAR) and sink capacity viz., leaf area index (LAI), leaf area duration (LAD), specific leaf area (SLA), specific leaf weight (SLW) and SCMR were higher in V2T7 i.e., Tirumala (V2) variety with T2 + foliar spray of 0.2% ZnSO4 at ear head emergence and grain filling stages (T7), followed by V1T7 i.e., Vakula (V1) variety with T2 + foliar spray of 0.2% ZnSO4 at ear head emergence and grain filling stages (T7) during kharif, 2019 and 2020. The growth parameters viz., plant height, number of tillers per plant, leaf area, total dry matter revealed that, V2T3 i.e., Tirumala (V2) variety with T2 + soil application of ZnSO4 @ 25 kg ha-1 as basal (T3) recorded significantly highest growth upto ear head emergence stage. And thereafter V2T7 i.e., Tirumala (V2) variety with T2 + foliar spray of 0.2% ZnSO4 at ear head emergence and grain filling stages (T7) recorded significantly higher growth parameters compared to other interactions. The yield attributes viz., number of productive tillers per plant, number of fingers per plant, 1000 grain weight were significantly highest in V2T7 i.e. Tirumala (V2) variety with T2 + foliar spray of 0.2% ZnSO4 at ear head emergence and grain filling stages (T7), followed by V1T7 i.e., Vakula (V1) variety with T2 + foliar spray of 0.2% ZnSO4 at ear head emergence and grain filling stages (T7) compared to all other interaction effects. Highest grain yield, straw yield and harvest index were recorded in V2T7 treatment compared to all other interactions during both years of experiment. Among the interaction effects of grain quality parameters, V2T7 i.e., Tirumala (V2) variety with T2 + foliar spray of 0.2% ZnSO4 at ear head emergence and grain filling stages (T7) recorded significantly higher protein, iron, zinc and calcium content, followed by V1T7 i.e., Vakula (V1) variety with T2 + foliar spray of 0.2% ZnSO4 at ear head emergence and grain filling stages (T7) compared to other interactions. The contribution of zinc from different plant parts viz., root, stem, leaf and leaf sheath to grain was highest in V2T7 i.e. Tirumala (V2) variety with T2 + foliar spray of 0.2% ZnSO4 at ear head emergence and grain filling stages (T7) and the least contribution was noticed by V1T1 i.e. Vakula (V1) variety with control i.e. no fertilizer and also no zinc (T1) during kharif, 2019 and 2020. Re-mobilization efficiency was higher in V2T7 i.e. Tirumala (V2) variety with T2 + foliar spray of 0.2% ZnSO4 at ear head emergence and grain filling stages (T7), followed by V1T7 i.e. Vakula (V1) variety with T2 + foliar spray of 0.2% ZnSO4 at ear head emergence and grain filling stages (T7) and least was recorded by V1T1 i.e. Vakula (V1) variety with control (T1). xvi The zinc use efficiency and root to shoot translocation index were lesser in V2T7 i.e. Tirumala (V2) variety with T2 + foliar spray of 0.2% ZnSO4 at ear head emergence and grain filling stages (T7). Whereas V1T1 i.e. Vakula (V1) variety with control (T1) recorded higher translocation compared to other interactions. The highest post harvest available soil zinc status was recorded with T3 i.e. T2 + soil application of ZnSO4 @ 25 kg ha-1 as basal and T4 i.e. T2 + soil application of chelated zinc sulphate @ 5 kg ha-1 as basal with no significant difference between them. However, the available soil zinc status was low with control (T1). Based on the results obtained from the present study, it is evident that the variety Tirumala (V2) found effective for physiological efficiency, yield attributes, partitioning efficiency, quality, zinc fortification and grain quantity parameters compared to Vakula (V1). The soil application of T2 + ZnSO4 @ 25 kg ha-1 (T3) recorded increased growth parameters up to ear head emergence stage, However, T2 + foliar spray of 0.2% ZnSO4 at ear head emergence and grain filling stage (T7) proved to be the best with higher grain yield, partitioning of zinc to grain, re-mobilization efficiency and grain fortification.en_US
dc.identifier.otherD6222
dc.identifier.urihttps://krishikosh.egranth.ac.in/handle/1/5810186131
dc.keywordsEFFECT, ZINC APPLICATION , GROWTH, RE-MOBILISATION EFFICIENCY, GRAIN FORTIFICATION ,FINGER MILLET (Eleusine coracana (L.) Gaertn)en_US
dc.language.isoEnglishen_US
dc.pages220en_US
dc.publishergunturen_US
dc.subCrop Physiologyen_US
dc.themeEFFECT OF ZINC APPLICATION ON GROWTH, RE-MOBILISATION EFFICIENCY AND GRAIN FORTIFICATION IN FINGER MILLET (Eleusine coracana (L.) Gaertn)en_US
dc.these.typePh.Den_US
dc.titleEFFECT OF ZINC APPLICATION ON GROWTH, RE-MOBILISATION EFFICIENCY AND GRAIN FORTIFICATION IN FINGER MILLET (Eleusine coracana (L.) Gaertn)en_US
dc.typeThesisen_US
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