Avaliação de cultivares de milho crioulo em sistema de baixo nível tecnológico

Pípolo, Valéria Carpentieri; Souza, Agnelo de; Silva, Daiana Alves da; Barreto, Thales Pereira; Garbuglio, Deoclécio Domingos; Ferreira, Josué Maldonado

doi:10.4025/actasciagron.v32i2.430

Cited by 13 publications

(7 citation statements)

References 6 publications

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“…Sweet potato, particularly cultivated in the northeast of the country, is considered to be relatively easy to grow and has diverse uses, from biofuels and animal feed to the production of paper and cosmetics [124]. In relation to landrace maize, local varieties offer several advantages in terms of sustainability, such as lower production costs, resistance to pests and diseases, and higher resilience to climate variations [125]. The literature examined suggests that sweet potato and landrace maize offer a more accessible and inclusive alternative to smallholder farmers because local knowledge exists, they have similar yields of ethanol per hectare, use less water, and their by-products can be commercialised in various markets (see Section 4).…”

Section: Discussionmentioning

confidence: 99%

Understanding the Implications of Alternative Bioenergy Crops to Support Smallholder Farmers in Brazil

et al. 2020

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Smallholders constitute more than three quarters of the world’s farmers, and despite their numbers, they commonly lack opportunities to advance their development status. Bioenergy production and consumption can help sustain smallholders’ energy needs and generate employment and income, but it also raises concerns over social justice and equity, especially where crops used for bioenergy could also be used for food. This perspective paper is grounded in a literature review related to three different crops in Brazil: sugarcane, landrace maize and sweet potato. It seeks to determine if these crops offer the potential to support smallholder farmers’ development in a more equitable way, focusing on opportunities for their use in bioenergy. We review the literature to identify policies shaping the smallholder development context in relation to these crops, assessing whose knowledge informs policy and institutional decision making, and highlighting the policy attention afforded to the different crops from different sectors. We further evaluate the literature on each crop in relation to water use and calorific value (i.e., food and energy). Our review indicates that while sugarcane has received the most policy and institutional attention, its development is largely anchored in research and development investments that support large-scale commercial farms and agri-businesses. Smallholders have not benefited or had the opportunity to engage in relevant policy decision making for sugarcane cultivation. At the same time, smallholders hold valuable untapped knowledge on the cultivation of sweet potato and landrace maize, both of which have the potential to generate development opportunities for smallholders. Our review suggests that the environmental impact of landrace maize and sweet potato in terms of water use is significantly lower than sugarcane, while they can generate more calories for energy or food consumption and offer diversification opportunities. Despite that these alternative crops offer considerable untapped potential to support rural development, more research is still needed to harness these benefits. Changes are needed to address inequities in policies, institutions and the types of knowledge informing decision making. Such changes need to afford smallholder farmers greater recognition and participation in decision making, so that the distribution of benefits from the three study crops can reach them to support their development better.

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Section: Discussionmentioning

confidence: 99%

Understanding the Implications of Alternative Bioenergy Crops to Support Smallholder Farmers in Brazil

et al. 2020

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“…Under conditions that employ relatively unsophisticated growing technologies, maize hybrids may show inferior performance compared to open pollinated varieties (Pipolo, 2010). Open pollinated genotypes, though they are less productive, are important sources of genetic variability for breeding programs, which seek superior genetic constitutions and alleles for production under adverse biotic and abiotic conditions (Araújo and Nass, 2002).…”

Section: Introductionmentioning

confidence: 99%

Research Article Multivariate characterization and canonical interrelations for the productive performance of open pollinated corn genotypes

Troyjack¹,

Pimentel²,

Carvalho³

et al. 2019

Genet. Mol. Res.

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Corn is considered one of the most important crops in the world agricultural scenario. In order to improve production, it is crucial to understand and quantify the genetic variation involved in the phenotypic manifestation of this species. We characterized corn genotypes using a multivariate approach and examined canonical interrelations between characters of agronomic importance. The study was carried out in the 2016/2017 crop year in the southernmost state of Brazil, in the northwest region of Rio Grande do Sul. The treatments were composed of six open-pollinated corn genotypes (PL 712, PL 725, PL 796, PL 804 and PL 861). The experimental design was a randomized block with four replications. Analysis of variance revealed a significant difference at 5% of probability by the F test for the attributes plant height, ear insertion height, stem diameter, ear length, number of seed rows per ear, number of seeds per row of ear, thousand seed weight, seed yield, percentage of germination, first germination count, emergency percentage and cold test. Genetic variability analysis showed genotype PL 712 to have superior seed productivity. The physiological quality of the seeds produced was variable among the genotypes, but it followed the trend of superiority for PL 712. Linear associations revealed a ©FUNPEC-RP www.funpecrp.com.br Genetics and Molecular Research 18 (2): gmr18123 C. Troyjack et al. 2 tendency for tall stature plants to increase seed yield of open pollinated corn. The most polymorphic characters were plant height and ear insertion, response to cold test, and thousand seed weight. The productivity and seed quality trends that were observed will allow us to plan further research on open pollinated varieties to allow selection and development of superior genotypes for seed productivity and quality in the extreme south of Brazil.

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“…Conforme Ferreira et al, (2010), é necessário utilizar técnicas de recuperação e fertilização orgânica dos solos para viabilizar o retorno das condições de equilíbrio ecológico e reduzir utilização de adubos minerais no sistema produtivo. O aproveitamento de adubo orgânico de origem animal no cultivo agrícola tem sido uma prática utilizada na busca de alternativas para substituir os adubos minerais.…”

Section: Introductionunclassified

Características de crescimento e desenvolvimento do milho crioulo com diferentes adubações orgânicas

et al. 2019

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A sociedade torna-se cada vez mais consciente em relação às externalidades apresentadas pela agricultura convencional, assim, a demanda por sistemas que degradem menos o meio ambiente é crescente. Neste contexto, objetivou-se caracterizar o desempenho agronômico do milho em solo adubado com diferentes adubações orgânicas. O delineamento experimental foi em blocos aleatorizados 5 tratamentos e 15 repetições, totalizando 75 unidades experimentais. Os tratamentos foram: testemunha (sem adubo); esterco bovino (40 t ha-1); esterco aviário (5 t ha-1); esterco caprino (65 t ha -1) e misto (bovino+aviário+caprino) (36 t ha-1). Aos 14, 21, 28 e 35 dias após o plantio (DAP) foi mensurada a altura da planta, número de folhas e diâmetro do colmo; a altura da primeira espiga no colmo aos 80 DAP. Os resultados demonstram que para os caracteres avaliados, os menores valores foram observados no tratamento com esterco bovino. A adubação mista proporcionou aumento no número de folhas. O esterco de caprinos promoveu maior diâmetro do colmo e número de espiga/planta. O peso da espiga/planta foi incrementado com o uso do esterco caprino e do esterco misto.

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Avaliação de cultivares de milho crioulo em sistema de baixo nível tecnológico

Cited by 13 publications

References 6 publications

Understanding the Implications of Alternative Bioenergy Crops to Support Smallholder Farmers in Brazil

Understanding the Implications of Alternative Bioenergy Crops to Support Smallholder Farmers in Brazil

Research Article Multivariate characterization and canonical interrelations for the productive performance of open pollinated corn genotypes

Características de crescimento e desenvolvimento do milho crioulo com diferentes adubações orgânicas

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