Produção de beterraba em função do espaçamento

Corrêa, Carla Verônica; Cardoso, Antônio Ismael Inácio; Souza, Luís Gustavo de Souza e; Antunes, Walter L.P.; Magolbo, Luis Augusto

doi:10.1590/s0102-05362014000100019

Cited by 18 publications

(14 citation statements)

References 10 publications

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“…The RL may have been influenced by the density of emerged seedlings, since in the treatments with higher E, resulted in greater root development, corroborating with Corrêa et al (2014), which associates the reduction of fresh root mass and the reduction in root size to the increase of planting density, causing competition for light and nutrients among beet plants.…”

Section: Resultssupporting

confidence: 63%

Variation of Water Availability in Initial Development of Safflower

Cruz¹,

Júnior²,

Santos³

et al. 2019

JAS

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The availability of water is one of the most important factors for the development of the seeds. Thus, studies related to adequate humidity for germination, emergence and early development of safflowers, is necessary for the productive use of this culture. Thus, the objective of study was to evaluate the initial development of two varieties of seeds of Safflowers (IAPAR and IMA2103) in six levels of water availability in substrate: 0, 10, 20, 30, 40 and 50%. At 15 days the seedling emergence were evaluate. At 30 days were evaluate plant height, root length, stem diameter, number of leaves, fresh weight of the aerial part and root, dry weight of shoot and root. The treatment without irrigation, there was decrease the emergence, emergence speed for both genotypes. Treatments above 30% of water availability in the two varieties presented emergency superior to 50%. Lower irrigation rates favored root length and dry mass.

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Section: Resultssupporting

confidence: 63%

Variation of Water Availability in Initial Development of Safflower

Cruz¹,

Júnior²,

Santos³

et al. 2019

JAS

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“…It is known that an increase in plants per unit area tends to increase production. However, as high plant densities do not always result in products of high commercial value, there is a limit to this increase (Correa et al, 2014). In very dense crops, there is greater competition among plants for light, water and nutrients, in which productivity tends to decrease.…”

Section: Introductionmentioning

confidence: 99%

Productive and physiological performance of lettuce cultivars at different planting densities in the Brazilian Semi-arid region

Neto¹,

Guimarães²,

Tello³

et al. 2017

Afr. J. Agric. Res.

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In regions of high temperature, production and quality in the lettuce is reduced. This requires finding of cultivars that are more adapted to such conditions and adjust the planting density for each cultivar. Consequently, the aim of this study was to evaluate the productive and physiological performance of lettuce cultivars at different planting densities under semi-arid conditions. The experiment was carried out at the

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“…Essa correlação entre produção por planta e densidade também foi constatada em outras hortaliças (Caldas et al, 2008;Pôrto et al, 2012;Corrêa et al, 2014;Takahashi & Cardoso, 2014). Manetti (2010), estudando três densidades de plantio em ervilha (25.000, 50.000 e 100.000 plantas/ha), também obteve maior produção por planta quanto menor a densidade.…”

Section: Resultsunclassified

Densidade de plantio na produção de ervilha-de-vagem

et al. 2016

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RESUMOA otimização do espaço na produção de hortaliças é de suma importância para o agricultor; algumas vezes esse é o limiar do lucro. Novos arranjos de plantas com disposições diferentes buscam maximizar a produção. Objetivou-se com este trabalho avaliar a produtividade de ervilha de vagens comestíveis em diferentes densidades de plantio, variando o espaçamento entre covas e o número de plantas por cova. O delineamento experimental utilizado foi de blocos ao acaso, com oito tratamentos no esquema fatorial 4 x 2 (espaçamentos entre covas de 0,2; 0,3; 0,4 e 0,5 m com 1 ou 2 plantas por cova), representando densidades de 20.000 a 100.000 plantas/ha para o espaçamento de 1,0 m entre linhas, com seis repetições. Foram avaliadas a produtividade total e comercial, a produção de vagens comerciais por planta e o número de vagens comerciais. Os dados foram submetidos ao teste F, sendo as médias referentes ao número de plantas por cova comparadas pelo teste de Tukey e as referentes aos espaçamentos pela análise de regressão. Foi obtida maior produtividade de vagens comerciais (15,53 t/ha com 2 plantas por cova) e menor produção por planta (150 g com 2 plantas por cova), quanto menor o espaçamento (0,2 m). Caso o produtor resolva plantar com um espaçamento maior, aconselha-se o uso de duas plantas por cova. Palavras-chave:Pisum sativum, produtividade, espaçamento. ABSTRACT Plant density in the production of edible pod peaThe optimization of space in vegetable production is very important to the farmer; sometimes this is the threshold of profit. New arrangements of plants with different provisions seek to maximize production. The objective of this research was to evaluate the productivity of edible pea pods in different planting densities, varying the spacing between holes and the number of plants per hole. The experimental design was randomized blocks, with eight treatments in a factorial scheme 4 x 2 (spacing among holes of 0.2, 0.3, 0.4 and 0.5 m with 1 or 2 plants per hole), representing densities of 20,000 to 100,000 plants/ha for spacing of 1.0 m between rows, with six replications. We evaluated the total production/ha, the marketable production/ha and per plant, and the number of marketable pods/ha and per plant. The data were submitted to the F test, and the means concerning number of plants per hole were compared by Tukey's test and the spacing between holes by regression analysis. Higher productivity was obtained (15.53 t/ha with 2 plants per hole) and lower production of pods per plant (150 g, with 2 plants per hole), the smaller the spacing (0.2 m). However, if the farmer decides to plant on greater spacing, the density of two plants per hole is recommended.

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Produção de beterraba em função do espaçamento

Cited by 18 publications

References 10 publications

Variation of Water Availability in Initial Development of Safflower

Variation of Water Availability in Initial Development of Safflower

Productive and physiological performance of lettuce cultivars at different planting densities in the Brazilian Semi-arid region

Densidade de plantio na produção de ervilha-de-vagem

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