Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Plant Growth-Promoting Bacteria Enhance Survival, Growth, and Nutritional Content of Sugarcane Propagated through Pre-sprouted Seedlings under Water Deficit

Laura Costa Oliveira Almeida
ORCID logo ,
Hariane Luiz Santos
,
Carlos Henrique de Castro Nogueira
,
Melina Rodrigues Alves Carnietto
,
Gustavo Ferreira Da Silva
,
Carmen S. F. Boaro
ORCID logo ,
Marcelo de Almeida Silva
* ORCID logo
Version 1 : Received: 2 January 2024 / Approved: 3 January 2024 / Online: 3 January 2024 (07:54:50 CET)

A peer-reviewed article of this Preprint also exists.

Almeida, L.C.O.; Santos, H.L.; Nogueira, C.H.C.; Carnietto, M.R.A.; Silva, G.F.; Boaro, C.S.F.; Silva, M.A. Plant Growth-Promoting Bacteria Enhance Survival, Growth, and Nutritional Content of Sugarcane Propagated through Pre-Sprouted Seedlings under Water Deficit. Agriculture 2024, 14, 189. Almeida, L.C.O.; Santos, H.L.; Nogueira, C.H.C.; Carnietto, M.R.A.; Silva, G.F.; Boaro, C.S.F.; Silva, M.A. Plant Growth-Promoting Bacteria Enhance Survival, Growth, and Nutritional Content of Sugarcane Propagated through Pre-Sprouted Seedlings under Water Deficit. Agriculture 2024, 14, 189.

Abstract

Sugarcane plays a crucial role in global sugar and ethanol production. Conventionally, sugar-cane propagation involves planting billets. However, Brazilian researchers have introduced the innovative pre-sprouted seedlings (PSS) method, widely used in the MEIOSI (Simultaneously Occurring Interrotational Method) system. Although MPB has several advantages over the con-ventional method, its sensitivity to water scarcity is a challenge. The study aimed to evaluate the survival and growth of PSS inoculated with Bacillus licheniformis and Bacillus subtilis under differ-ent water regimes. The experiment was conducted in the field in a randomized block in strips (split-block) using a 2×4 factorial scheme consisting of two inoculation conditions (with and without bacteria) and four water regimes (0%, 33%, 66%, and 100% of the ideal irrigation). The bacteria increased the PSS's survival and water use efficiency in the field. In addition, inocula-tion increased root and shoot growth, as well as the nutrient uptake such as N, P, Mn, Zn, and Cu, which resulted in a higher number of stalks per meter and, therefore, a higher multiplica-tion rate in the MEIOSI system. Inoculation proved to be a promising alternative for establishing PSS under water restriction.

Keywords

Saccharum spp.; biostimulants; water availability; nutrition; growth rate

Subject

Biology and Life Sciences, Agricultural Science and Agronomy

Copyright: This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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