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Effect of Zn application methods on Zn distribution and bioavailability in wheat pearling fractions of two wheat genotypes 被引量:1
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作者 LI Meng TIAN Xiao-hong +1 位作者 LI Xiu-li WANG Shao-xia 《Journal of Integrative Agriculture》 SCIE CAS CSCD 2017年第7期1617-1623,共7页
Pearling is an effective method for evaluating the distribution of chemical components in wheat grain. Five pearling fractions (representing approximately 20% of the original sample weight) of wheat grain were obtai... Pearling is an effective method for evaluating the distribution of chemical components in wheat grain. Five pearling fractions (representing approximately 20% of the original sample weight) of wheat grain were obtained using the JNMJ3 rice polisher for two cultivars with different methods of Zinc (Zn) application; the residual portion (approximately 80%) was ground as flour. Results showed that folJar or soil+foliar Zn application methods effectively increased Zn concentrations and bioavailability in whole grain and pearling fractions, but soil Zn application was ineffective in field conditions. In addition, the concentrations of Zn, Fe, Mn and Cu within wheat grain showed a diminishing trend from the outer layer to the inner portions of the wheat grain as the pearling level increased. These results cleady showed the distribution of minerals in wheat grain, especially in the outer part of the grain (bran). The results also suggest that precise milling techniques combined with foliar Zn ap- plication could improve the Zn and Fe nutritional qualities of consumed flour and mitigate human Zn and Fe deficiencies. 展开更多
关键词 Zinc zn zn bioavailability wheat grain pearling fraction
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Efficiency of soil-applied ^(67)Zn-enriched fertiliser across three consecutive crops
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作者 Edson M.MATTIELLO Eduardo L.CANCELLIER +3 位作者 Rodrigo C.DA SILVA Fien DEGRYSE Roslyn BAIRD Mike J.MCLAUGHLIN 《Pedosphere》 SCIE CAS CSCD 2021年第4期531-537,共7页
A very small amount of applied zinc(Zn) is taken up by crops, resulting in low recovery by plants. Adding elemental sulphur to zinc oxide(ZnO) fertiliser could improve Zn solubilisation and exert a higher residual eff... A very small amount of applied zinc(Zn) is taken up by crops, resulting in low recovery by plants. Adding elemental sulphur to zinc oxide(ZnO) fertiliser could improve Zn solubilisation and exert a higher residual effect on crops than soluble Zn sources. We produced an isotopically labelled Zn-elemental sulphur fertiliser and evaluated its performance in comparison to traditional Zn sources during sequential crop cultivation. Three ^(67)Zn-labelled fertilisers,ZnO, zinc sulphate(ZnSO_(4)), and ZnO co-granulated with elemental sulphur(ZnOS^(0)), were soil applied, and their contributions to the uptake of Zn by three consecutive crops, wheat, ryegrass, and corn, were assessed in a 294-d pot experiment. The contributions of Zn fertilisers followed the order: ZnSO_(4) > ZnO= ZnOS^(0). The relative contributions of Zn fertilisers were lower in the first crop than in the subsequent crops. The overall recovery of applied Zn by the three crops was higher for ZnSO_(4) than for ZnO and ZnOS^(0), reaching 1.56%, 0.45%, and 0.33% of the applied Zn, respectively. Zinc recovery by plants was very low, regardless of the source of Zn. Adding elemental sulphur to ZnO did not increase its effectiveness up to 294 d after application. Fertiliser contribution was higher for the subsequent crops than for the initial crop, indicating the importance of assessing the residual effects of Zn fertilisers. 展开更多
关键词 agronomic biofortification elemental sulphur fertilizer residual effect plant uptake zn bioavailability zn fertilization zn source
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