Author:
Peñuelas Rubio Ofelda,Argentel Martínez Leandris,Gonzalez Aguilera Jorge,Krewer Bruna Izabel,Ferrerira Diniz Jessica,Vilela Barros Pedro Paulo,Alfonso Junior José Aristeu,Ratke Rafael Felippe,Zuffo Alan Mario,Garatuza Payán Jaime
Abstract
The present work aimed to evaluate the effect of the seedling position and Azospirillum brasilense application on the initial development of cassava. The assay was conduced following a completely randomized experimental design, with factorial arrangement (planting positions [horizontal (HP) and vertical (PV)] and the A. brasilense [with (+Azos) and without (-Azos)]). The sprouting percentage (SP) was evaluated from 11 to 35 days after planting (DAP). After 30 DAP, the following variables were evaluated: sprouts number (SN), sprouts height (SH), number of leaflets (NL), length of leaflets (LL), and vegetative vigor (VV). Cassava plants positioning significantly influenced the initial growth. PV promotes a greater sprouting, 63% in 17 DAP, over the PH which was only 3% of the visible shoots during the same period. Here we show for the first time that PV promoted the highest values ​​combined with -Azos in the variables SH (an increase of 17%) and VV (an increase of 61%). The PH, in combination with +Azos, stimulated the NL in 20%. The sub-division into three VV groups allowed identify the existence of differences among the treatments which were not seen in an independent ANOVA being VV an important variable for the initial growth evaluation in cassava.
Reference24 articles.
1. Allem AC. 2002. The Origins and Taxonomy of Cassava. In: Hillocks, R. J. and Tresh, J. C. (eds), Cassava: Biology, Production, and Utilization. CAB International, Wallingford, UK. 1-16. 10.1079/9780851995243.0000
2. Alvares CA, Stape JL, Sentelhas PC, Gonçalves JLM, Sparovek G. 2014. Köppen’s Climate Classification Map for Brazil. Meteorologische Zeitschrift. http://dx.doi.org/10.1127/0941-2948/2013/0507
3. Balota EL, Lopes ES, Hungria M, Döbereiner J. 1997. Inoculação de bactérias diazotróficas e fungos micorrízico-arbusculares na cultura da mandioca. Pesquisa Agropecuária Brasileira 32(6), 627-639.
4. Bhering LL. 2017. Rbio: A Tool For Biometric And Statistical Analysis Using The R Platform. Crop Breeding and Applied Biotechnology 17(2): 187-190. https://doi.org/10.1590/1984-70332017v17n2s29
5. Cerqueira FB, Faria AJG, Santos PF, Carneiro JJS, de Freitas JA, Ribeiro FC. 2016. Desenvolvimento inicial da mandioca ‘cacau’ sob diferentes posições da maniva. Tecnologia & Ciência Agropecuária 10(5): 16-21.