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Biochar influences the cane fields’microbiota and the development of pre-sprouted sugarcane seedlings

Waste Disposal and Sustainable Energy 2023年第1期5卷 75-88页

作者： Bruna Cristina Pinto Adriana Barboza Alves Osania Emerenciano Ferreira gustavo henrique gravatim costa Magno Andréde Oliveira Augusto Cesar da Silva Bezerra Alan Rodrigues Teixeira Machado Postgraduate Program in Environmental Sciences State University of Minas GeraisFrutal UnityFrutalMinas Gerais38202-436Brazil Department of Agricultural and Biological Sciences State University of Minas GeraisFrutal UnityFrutalMinas Gerais38208-436Brazil Postgraduate Program in Geotechnical Engineering Federal University of Ouro PretoOuro PretoMinas Gerais35400-000Brazil Department of Transport Engineering Federal Center for Technological Education of Minas GeraisBelo HorizonteMinas Gerais30421-169Brazil Department of Exact Sciences State University of Minas GeraisJoão Monlevade UnityJoão MonlevadeMinas Gerais35930-314Brazil

This research investigates the soil conditioning effect of sugar cane fields with biochar produced from sugarcane bagasse.Its influence on the physicochemical and microbiological conditions of the soil and the agronomic performance of sugarcane seedlings was verified.To this end,the biochar from sugarcane bagasse was produced by pyrolysis in a double drum oven and mixed with soil at rates of 0,1%,3%,and 5%(in weight).The experiment was installed in a greenhouse with two evaluation periods(30 days and 60 days)and five replicates.Each pot received a pre-sprouted cane seedling,and the analysis of colony-forming units(bacteria and fungi),physicochemical characteristics of the soil,and growth and development of sugarcane were performed per pot.The biochar showed a high fixed carbon content(72%)and a specific surface area estimated by the adsorption of methylene blue of 50 m2 g−1.Furthermore,its structure is porous and contains important nutrients(e.g.,CaO,K2O,and P2O5).In the periods evaluated,the applications of the 3%and 5%(in weight)rates of biochar reduced most of the soil fertility parameters.However,the chemical analyses indicated that the sugarcane field soil collected already possessed high fertility.The microbiota was influenced,but only the application of the 3%(in weight)rate at 60 days after planting showed a significant positive effect on the number of bacteria forming units,with an increase of approximately 385%.On the other hand,no significant positive effect on sugarcane development was found.Therefore,biochar application in high-fertility sugarcane plantation soil did not result in gains for sugarcane development in the periods evaluated.

关键词： Soil Biometry Microbiology Double drum oven Biochar

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Adaptability, Stability and Multivariate Selection by Mixed Models

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American Journal of Plant Sciences 2017年第13期8卷 3324-3337页

作者： Alan Junior de Pelegrin Ivan Ricardo Carvalho Andrei Caíque Pires Nunes gustavo henrique Demari Vinicíus Jardel Szareski Mauricio Horbach Barbosa Tiago Corazza da Rosa Mauricio Ferrari Maicon Nardino Osmarino Pires dos Santos Marcos Deon Vilela de Resende Velci Queiróz de Souza Antonio costa de Oliveira Luciano Carlos da Maia Federal University of Pelotas Center of Genomics and Plant Breeding Avenida Eliseu Maciel Capao do Leao Brazil Federal University of Vicosa Center of Exact and Technological Sciences Vicosa Brazil Federal University of Santa Maria Frederico Westphalen Campus Frederico Westphalen Brazil Federal University of Pampa Campus Dom Pedrito Bagé Brazil

The aim of this work was to estimate the adaptability and stability of grain yield per hectare and percentage of crude protein of maize grains combined in an index, and to establish a multicharacter selection through mixed models based on an objective character and 15 auxiliary traits. The trials were conducted in the 2013/2014 agricultural year in four growing environments of the Rio Grande do Sul, BR state. The experimental design was randomized blocks arranged in a factorial scheme, being four growing sites × 15 single cross maize hybrids, arranged in three repetitions. The genotypic index, composed by the grain yield and the crude protein percentage in the grains, is the best selection strategy to achieve maize superior genotypes. The multivariate genotypes selection, considering grain yield and crude protein, is efficient. The genotypes FORMULA TL®, AS1656PRO®, P30F53Hx®, LG6304YG®and 30F53 are more adapted and stable for grain yield and percentage of crude protein, in the conditions of this study. The mixed models were efficient to employ the multicharacter selection and to contribute for maize genetic breeding.

关键词： Plant Breeding Zea mays L. Phenotypic Index Genetic Parameters Multicharacter

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