Produtividade de batata-doce e propriedades físicas e químicas de solo em função de adubação orgânica e mineral

Rós, Amarílis Beraldo; Narita, Nobuyoshi; Hirata, Andréia Cristina Silva

doi:10.5433/1679-0359.2014v35n1p205

Cited by 11 publications

(18 citation statements)

References 6 publications

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“…In addition to the chemical improvement, the organic input contributes to the physical conditioning of the soil (VALADÃO et al, 2011), allowing greater moisture retention and favouring crop production. Along the same lines, Rós (2014) found that the use of 5.79 t ha -1 chicken manure prompted a total productivity of 25.6 t ha -1 in sweet potato roots.…”

Section: Discussionmentioning

confidence: 84%

“…Além da melhoria química, o insumo orgânico contribui para o condicionamento físico do solo (VALADÃO et al, 2011), o que permite maior retenção de umidade, favorecendo a produção da cultura. Nessa mesma linha, Rós (2014) verificou que o uso de 5,79 t ha -1 de esterco de galinha determinou produtividade total de 25,6 t ha -1 de raízes de bata-doce.…”

Section: Discussionunclassified

“…Entretanto, os agricultores fazem pequenas áreas de cultivo associada à aplicação de baixa tecnologia, o que resulta em baixo volume individual de produção e baixa lucratividade. Esse fato é reflexo da ausência de tecnologias, informações e conhecimentos adequados, principalmente com relação à fertilização orgânica e mineral, o que tem provocado perda de receita, desestimulando os produtores e contribuindo para o decréscimo da área plantada RÓS et al, 2014).…”

Section: Introductionunclassified

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Yield of sweet potato as a function of organic fertilization and intercropping with Crotalaria juncea

Silva

Silva²,

Nunes³

et al. 2018

AGRO@MBIENTE ON-LINE

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In the northern region of Brazil, information for the sweet potato regarding suitable soil management, especially organic fertilisation and intercropping with species of green manure, are still in the early stages. The aim of this research therefore, was to evaluate the effect of poultry litter on the yield of sweet potato roots grown under a monocrop system and when intercropped with sunn hemp (Crotalaria juncea) under the soil and climate conditions of the State of Roraima. The experiment was carried out in the field from August to December of 2014, in the Sector for Olericulture of the School of Agricultural Technology, on the Murupu Campus of UFRR in the town of Boa Vista, Roraima. A randomised block experimental design was used, with three replications, in a (5 × 2) + 1 factorial scheme, representing five doses of poultry litter (0, 5, 10, 15 and 20 t ha -1 ), with sweet potato as both a monocrop and intercropped with sunn hemp, and one additional treatment with organic and mineral fertiliser. Slips of the Granfina variety of sweet potato were used for planting. Seeds of sunn hemp were sown in double rows between the rows of sweet potato 30 days after planting the slips, with the first cutting carried out 90 days after sowing. The addition of poultry litter to the soil increased the total production of sweet potato roots for the crop planted in Roraima, whether intercropped or not with sunn hemp. Despite the benefits to sweet-potato yield from the addition of poultry litter and the intercrop with sunn hemp, total productivity was greater in the additional treatment that received organic and mineral fertiliser.Resumo: Na região Norte, as informações para a batata-doce quanto ao manejo adequado do solo, principalmente sobre a fertilização orgânica e o consórcio com espécies de adubos verdes, ainda são incipientes. Neste sentido, objetivou-se com esta pesquisa avaliar o efeito da cama de aviário sobre o rendimento de raízes de batata-doce, cultivada em sistema solteiro e consorciada com Crotalaria juncea, nas condições edafoclimáticas de Roraima. O experimento foi realizado em campo no período de agosto a dezembro de 2014, no setor de Olericultura da Escola Agrotécnica, Campus Murupu-UFRR, município de Boa Vista-RR. O delineamento experimental empregado foi o de blocos casualizados, com três repetições, usando o arranjo fatorial (5 × 2) + 1, referentes a cinco doses de cama de aviário (0; 5; 10; 15 e 20 t ha -1 ), com a batata-doce em monocultivo e consorciada com a crotalária, e um tratamento adicional com adubação orgânica e mineral. No plantio da batata-doce foram utilizadas ramas da variedade Granfina. As sementes de crotalária foram semeadas em linhas duplas nas entrelinhas da batata-doce, aos 30 dias após o plantio das ramas, sendo o seu primeiro corte efetuado 90 dias após sua semeadura. A adição de cama de aviário ao solo elevou a produtividade total de raiz de batata-doce no lavrado de Roraima, independente da ausência ou presença do consórcio com crotalária. Apesar da ação benéfica da adição de cama-d...

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Section: Discussionmentioning

confidence: 84%

Section: Discussionunclassified

Section: Introductionunclassified

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Yield of sweet potato as a function of organic fertilization and intercropping with Crotalaria juncea

Silva

Silva²,

Nunes³

et al. 2018

AGRO@MBIENTE ON-LINE

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“…The estimated yield quadratic response was also reported for other crops. Rós et al (2014) reported that sweet potato fertilized with chicken manure up to the rate of 12 t ha -1 presented maximum commercial yield of tuberous roots (23.6 t ha -1 ) at the rate of 5.8 t ha -1 , with decrease in yield at higher rates of manure. Oliveira et al (2001) verified that the addition of chicken manure to yam crop promoted yield increase up to the rate of 6.6 t ha -1 and yield reduction at higher rates.…”

Section: Resultsmentioning

confidence: 99%

“…In sweet-potato, Rós et al (2014) studied the effect on yield of chicken manure applied to the soil up to 12 t ha -1 and obtained a higher yield of tuberous roots (23.6 t ha -1 ) with the rate of 5.8 t ha -1 manure. It is of note that the use of manure at this rate resulted in 32% increase of yield, which can be explained by the physical and chemical improvements in the soil.…”

Section: Introductionmentioning

confidence: 99%

Effects of limestone and organic fertilizer on cassava yield and on chemical and physical soil properties

et al. 2020

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Effects of limestone and organic fertilizer on cassava yield and on chemical and physical soil properties Cassava has a high yield potential that can be achieved with adequate liming and fertilization of the soil. The objective of this study was to evaluate the effect of organic fertilizer application, in association or not with liming, on yield and morphological characteristics of cassava roots and on chemical and physical properties of the soil. The experiment was arranged in the split plot design. The plots corresponded to limestone rates (0 and 2.5 t ha-1) and the subplots to chicken manure rates (0, 4, 8, and 12 t ha-1). Yield showed no response to limestone application, but responded to manure, producing 43 t ha-1 of roots at the rate of 8 t ha-1. The treatments had no influence on soil density and total porosity. The addition of manure increased the concentrations of P and K, while the addition of limestone increased Ca and Mg in the soil. The pH was affected only by limestone. Therefore, limestone does not affect crop yield and soil physical properties up to the amount used. Use of chicken manure up to 8 t ha-1 increased yield. Limestone and manure affect soil fertility in different ways.

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Mineral nutrition and fertilization of sweet potato

Fernandes¹,

Ribeiro²

2020

Científica

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Sweet potato (Ipomoea batatas L.) is a versatile crop, but it is often grown in marginal and low-fertility areas, which reflects storage root yields far below its potential. For this reason, balanced liming and fertilization in sweet potato are essential to increase crop yield. Based on this approach, themes related to the nutritional requirements of sweet potato are presented and discussed considering the main cultivars currently used in Brazil as well as references for rational fertilization management in this crop. Sweet potato is a crop that absorbs large amounts of nutrients during its development cycle, but this should not be used as a prerogative to excessively increase the fertilizer rates applied in this root crop. As a strategy for rational fertilization management, one should take advantage of the ability of this crop to associate with N-fixing microorganisms, thus reducing the use of mineral N. Moreover, it is necessary to encourage the use of organic fertilizer, whether using animal manure or green manure. In addition to increasing storage root yield and improving storage root shape, organic fertilizers can partially replace mineral chemical fertilizers. Studies aimed at updating cultivar-specific potassium and phosphate fertilizer recommendations should also be encouraged, as well as research addressing micronutrient supply for sweet potato.

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Produtividade de batata-doce e propriedades físicas e químicas de solo em função de adubação orgânica e mineral

Cited by 11 publications

References 6 publications

Yield of sweet potato as a function of organic fertilization and intercropping with Crotalaria juncea

Yield of sweet potato as a function of organic fertilization and intercropping with Crotalaria juncea

Effects of limestone and organic fertilizer on cassava yield and on chemical and physical soil properties

Mineral nutrition and fertilization of sweet potato

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