DOI：10.31220/agriRxiv.2023.00182

Assessing the residual benefit of soil-applied zinc on grain zinc nutritional quality of maize grown under contrasting soil types in Malawi.

•  

  Abstract: Abstract A proper understanding of the residual value of zinc (Zn) is necessary for sustainable biofortification of food crops. This study aimed to establish the extent to which application of Zn at the national rate, plus two experimentally elevated rates, in one year provided any benefit to plant yield and nutritional quality in the following growing season. Residual effects of soil-applied Zn on grain Zn concentration and uptake were estimated by an experiment in which maize was grown in successive seasons at two agricultural research stations in Malawi, with Zn applied to the soil in the first season but not the second. At each site two common soil types were used: Lixisols and Vertisols. The study used three Zn fertilizer rates of 1, 30 and 90 kg Zn ha -1 applied to the soil in the previous cropping season, arranged in a randomized complete block design (RCBD) with 10 replications at each experimental site. At harvest, maize grain yield and Zn concentration in grain and stover were measured; Zn uptake by maize grain and stover were determined and Zn harvest index was calculated. Effects on grain yield and Zn uptake by the crop were assessed in relation to residual Zn fertilizer and soil type. Maize grain yield on plots in the second season where 30 kg Zn ha -1 had been applied exceeded that on second season plots where 1 kg Zn ha -1 had been applied by 25%. The grain Zn concentration and Zn uptake in the second season after fertilizer application were larger by 13% and 30% respectively on the plots which had received 30 kg Zn ha -1 than those which had received 1 kg Zn ha -1 . There was no evidence that applying Zn at 90 kg Zn ha -1 resulted in larger crop yield, grain Zn concentration, or Zn uptake the second year after application than was seen in plots the second year after application of 30 kg Zn ha -1 . The magnitude of the benefits attributed to residual effects of soil-applied Zn did not depend on soil type. Conclusively, the residual effects of 30 kg ha -1 of soil-applied Zn in the preceding season benefited the subsequent maize compared to the national recommendation of 1 kg Zn ha -1 . The benefits of larger applications of Zn than the current national recommendations should be considered across at least two seasons and for different crops.

  Key words: zn; ha; applied; soil; season; residua

  提交时间：2023-01-01

  版权声明：作者本人独立拥有该论文的版权，预印本系统仅拥有论文的永久保存权利。任何人未经允许不得重复使用。
• html

• 图表

• Muneta G. Manzeke-Kangara, Edward J.M. Joy, Florence Mtambanengwe, Prosper Chopera, Michael J. Watts, Martin R. Broadley, Paul Mapfum. Good soil management can reduce dietary zinc deficiency in Zimbabwe.. 2021. doi: 10.31220/agriRxiv.2021.00033

  Richa Rajput, A. Arunachala. Plant residue quality index and ecological potential approach for selective reincorporation of crop residues in soil.. 2022. doi: 10.31220/agriRxiv.2022.00122

  Giovanni Cafà, J. Miguel Bonnin, Nicola Holden, Jacob Malone, Tim H. Mauchline, Ian M. Clark, Rodrigo Gouvêa Taketani, Matthew J. Rya. Cryopreservation of a soil microbiome using a Stirling 1 cycle approach - a genomic assessment.. 2021. doi: 10.31220/agriRxiv.2021.00066

  K. V. Daniel, Mark A. Bradford, Emma Fuller, Emily E. Oldfield, Stephen A. Woo. Soil organic matter effects on US maize production and crop insurance payouts under drought.. 2020. doi: 10.31220/agriRxiv.2020.00018

  George Worrall, Jasmeet Judge, Kenneth J. Boote, Anand Rangaraja. In-season crop progress estimation using remote sensing and model-guided machine learning.. 2022. doi: 10.31220/agriRxiv.2022.00131

  Jacqueline N. Kariithi, DS Ngosia, Florence W Kamau, Daniel I. Rubenstei. Precision organic farming, increasing grain yield, soil nutrient management and economic viability for maize production.. 2023. doi: 10.31220/agriRxiv.2023.00212

  Solomon Teshome, Arega Amide, Miresa Mitik. Determining the profitability of different NPSB and nitrogen fertilizer rates on yield and yield attributes of Irish potato ( Solanum tuberosum L.) at southern Oromia, Ethiopia.. 2023. doi: 10.31220/agriRxiv.2024.00223

  Elijah C. Mehlferber, Kent F. McCue, Jon Ferrel, Britt Koskella, Rajnish Khann. Temporally selective modification of the tomato rhizosphere and root microbiome by a dacitic tuff breccia (volcanic ash) containing minerals and trace elements.. 2021. doi: 10.31220/agriRxiv.2021.00105

  Alfredo Júnior Paiola Albrecht, Leandro Paiola Albrecht, H.L. Villetti, Vinícius Gabriel Caneppele Pereira, Giovana Orso, Nour Eddine El-Gueddari, Bruno M. Moerschbacher, Roberta Pauler. Effect of chitosan foliar application on the performance and yield of soybean and maize under field conditions.. 2021. doi: 10.31220/agriRxiv.2022.00114

  Eduardo Santos Rodrigues, Gabriel Sgarbiero Montanha, Marcos Henrique Feresin Gomes, Nádia Marion Duran, Camila Graziele Corrêa, Sara Luiza Zachi Romeu, Anderson do Espírito Santo Pereira, Jhones Luiz de Oliveira, Eduardo de Almeida, Alejandro Pérez‐de‐Luque, Subhasis Ghoshal, Catherine Santaella, Renata de Lima, Leonardo Fernandes Fraceto, Hudson Wallace Pereira de Carvalh. Are nanomaterials leading to more efficient agriculture? Outputs from 2009-2022 research metadata analysis.. 2021. doi: 10.31220/agriRxiv.2021.00054

• 序号

  提交日期

  编号

  操作

• 公开评论  匿名评论  仅发给作者 提交评论