Produtividade da mandioquinha-salsa em resposta ao espaçamentos entre plantas e peso de mudas

Torales, Elissandra Pacito; Zárate, Néstor Antônio Heredia; Vieira, Maria do Carmo; Heid, Diego Menani; Moreno, Leandro Bassi; Grando, Vinicius Rotermel

doi:10.14393/bj-v31n2a2015-22364

Cited by 6 publications

(8 citation statements)

References 8 publications

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“…The leaf, crown, and shoot productivities of plants propagated with T2 seedlings surpassed the productivities obtained in plants propagated with T4 seedlings (which showed the lowest values) by 69.8, 33.3, and 53.1%, respectively. Torales et al (2015) obtained the highest leaf (0.79 t ha -1 ), crown (0.86 t ha -1 ), and shoot (1.26 t ha -1 ) dry masses from plants propagated using seedlings with higher masses when studying the productivity of Peruvian carrot in response to different spacings between plants and seedling weights, similarly to the trend of the present study.…”

Section: Resultssupporting

confidence: 86%

“…propagated using T2 seedlings, surpassing the length and diameter of roots of plants propagated with T4 seedlings by 3.11 cm and 5.90 mm, respectively. These results corroborate Torales et al (2015), who obtained greater lengths and diameters in plants propagated using seedlings with larger masses (12.26 g) when studying the weight of Peruvian carrot seedlings.…”

Section: /8supporting

confidence: 90%

“…Seedlings with larger reserves presumably induce increased shoot growth and development during the initial crop stages, thus favoring the growth of subterranean components, including roots in the case of Peruvian carrot (Heredia Zárate et al, 2003). Torales et al, (2015) observed that the mean seedling mass of 7.76 g promoted the highest fresh mass productivity of commercial roots (14.70 t ha -1 ), with 2.32 t ha -1 and 5.33 t ha -1 increases over the productivities obtained with seedlings of 2.73 and 5.58 g, respectively, when studying the agroeconomic production of 'Amarela de Carandaí' Peruvian carrot plants grown using two spacings (20 and 25 cm) between plants on the beds with five mean seedling masses (12.26, 7.76, 5.58, 3.98, and 2.73 g) and harvested at 249 DAP.…”

Section: Resultsmentioning

confidence: 99%

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Seedling size and broiler litter composition affect Peruvian carrot productivity and profitability

Heid

Zárate

Torales

et al. 2019

Agraria

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The commercial part of the Peruvian carrot plant is subterraneous, requiring well-structured soils. Differences in seedling size and the use of organic residues may affect crop productivity and farmer income. This study aimed to assess the productivity and profitability of Peruvian carrot propagated using different seedling sizes (T1, T2, T3, and T4) and grown with broiler litter of different bedding materials (wood shavings and rice hull) as soil cover, arranged in a 4 × 2 factorial scheme in a randomized block design with five replicates. The highest production of fresh leaves (5.85 t ha-1), shoots (7.55 t ha-1), and commercial roots (6.30 t ha-1) were obtained with propagation using T2 seedlings. Broiler litter with wood shavings bedding provided the highest commercial root productivity (5.00 t ha-1

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Section: Resultssupporting

confidence: 86%

Section: /8supporting

confidence: 90%

Section: Resultsmentioning

confidence: 99%

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Seedling size and broiler litter composition affect Peruvian carrot productivity and profitability

Heid

Zárate

Torales

et al. 2019

Agraria

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“…Londrina foram, em geral, superiores aos dos genótipos estudados por Guimarães et al (2018) que, no espaçamento entre plantas de 0,3 m, apresentaram massa média máxima de 224,7 g. No entanto, como o valor do comprimento não variou em função do espaçamento entre plantas enquanto o diâmetro foi ampliado com o aumento do espaçamento, a relação comprimento/diâmetro apresentou diminuição de seu valor com a ampliação do espaço entre plantas, embora o valor obtido no espaçamento de 0,3 m não tenha diferido dos demais. Em mandioquinha salsa, o comprimento e o diâmetro não variaram em função do espaçamento entre plantas (Torales et al, 2015). Tabela 1 -Diâmetro, relação comprimento/diâmetro e massa fresca de raízes tuberosas de batata-doce em função do espaçamento entre plantas na linha.…”

Section: Resultsunclassified

“…A maior proximidade entre plantas pode resultar em elevada competição entre elas, promovendo inclusive a queda de produtividade. Arancibia et al (2014) também não verificaram diferença na produtividade comercial de raízes de batatadoce em função dos espaçamentos entre plantas que, no estudo em Mississipi, foram de 0,3; 0,4 e 0,5 m. Em mandioquinha-salsa, Torales et al (2015) relatam maior produção de raízes comerciais por unidade de área quando é utilizado maior espaçamento entre plantas.…”

Section: Resultsunclassified

Produtividade de batata-doce em função de diferentes materiais de plantio e espaçamentos entre plantas

Rós¹,

Narita²,

Navarro³

et al. 2021

Científica

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A implantação da cultura da batata-doce ocorre por meio do uso de segmentos do caule (ramas). Quando há pouco material vegetativo, podem-se cultivar plantas para produzir as ramas necessárias. Como essa produção representa custo, é importante verificar se as plantas oriundas de miniestacas enraizadas produzem raízes comerciais. Assim, o trabalho teve por objetivo comparar as produtividades e formatos de raízes tuberosas de plantas oriundas de miniestacas enraizadas (mudas de bandeja) e de ramas não enraizadas em função do espaçamento entre plantas na linha (0,2; 0,3 e 0,4 m). A utilização de ramas promoveu maiores produtividades total e comercial e número de raízes que a utilização de miniestacas, independentemente do espaçamento. As plantas oriundas de miniestacas cultivadas nos espaçamentos 0,2 e 0,3 m apresentaram semelhantes produtividades total e comercial (médias de 18 e 14 t ha -1 , respectivamente), mas valores maiores em relação ao espaçamento 0,4 m. As produtividades total (30 t ha -1 ) e comercial (22,5 ha -1 ) de plantas oriundas de ramas não diferiram entre os espaçamentos. O material de plantio utilizado não alterou o formato das raízes tuberosas, mas as plantas oriundas de miniestacas apresentaram raízes tuberosas com maior massa fresca. Logo, áreas cultivadas com plantas oriundas de miniestacas apresentam produções comerciais de raízes tuberosas, sendo mais indicado o espaçamento de 0,3 m entre plantas.

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High population density in arracacha (Arracacia xanthorrhiza Bancroft) increase radiation interception, yield, and profitability

et al. 2021

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Introduction. Arracacha (Arracacia xanthorrhiza Bancroft) a promising crop due to its nutritional and gastronomic relevance. Population density is an agronomic practice that increases water and radiation use efficiencies, maximizes the yield, and crop profitability. However, the selection of the optimal population density based on physiological, agronomic, and economic criteria for arracacha has not been studied. Objective. To describe the effect of different population densities on the physiology, yield, and profitability of arracacha. Materials and methods. The experiment was conducted in Cajamarca, Colombia in 2019. There, the soil water potential, relative chlorophyll content, photosynthesis, stomatal conductance, water use efficiency, leaf temperature depression, photosynthetic reflectance index, leaf area index, the fraction of light interception, light extinction coefficient, cracking index, yield, and profitability were evaluated. Results. The results showed that high population densities did not generate water deficit because there were no significant differences for the soil water potential, leaf temperature depression, and photosynthetic reflectance index. Furthermore, no nutritional deficiencies were evidenced because the relative chlorophyll content (<32 SPAD) was higher at the critical level. Due to this, no limitations were observed in leaf gas exchange processes. However, the densities of 25,000 and 30,000 plants ha-1 showed a higher fraction of light interception due to the increase in the leaf area index; this allowed to obtain a higher yield at these densities. Conclusion. The maximum yield (41.96 t ha-1) and profitability (US$ 15,333.06 ha-1) were reached with a population density of 22,222 plants ha-1.

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Produtividade da mandioquinha-salsa em resposta ao espaçamentos entre plantas e peso de mudas

Cited by 6 publications

References 8 publications

Seedling size and broiler litter composition affect Peruvian carrot productivity and profitability

Seedling size and broiler litter composition affect Peruvian carrot productivity and profitability

Produtividade de batata-doce em função de diferentes materiais de plantio e espaçamentos entre plantas

High population density in arracacha (Arracacia xanthorrhiza Bancroft) increase radiation interception, yield, and profitability

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