&lt;b&gt;Growth and production of tomato fertilized with ash and castor cake and under varying water depths, cultivated in organic potponics

Gomes, Daniela Pinto; Carvalho, Daniel Fonseca de; Pinto, Marinaldo Ferreira; Valença, David da Cunha; Médici, Leonardo Oliveira

doi:10.4025/actasciagron.v39i2.32547

Cited by 15 publications

(11 citation statements)

References 26 publications

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“…Diante destes resultados, obtidos em ambos os ensaios, percebe-se que a utilização de TM pode favorecer o crescimento radicular e da parte aérea das plantas de couve-flor. Acredita-se que estes efeitos positivos deva-se aos benefícios diretos da TM em função de suas propriedades como fertilizante (SILVA et al, 2012;GOMES et al, 2017;MELLO et al, 2018) e à redução da incidência e severidade da doença, observadas em ambos os ensaios. Deve-se considerar também que os valores de pH dos solos utilizados nos dois ensaios (pH ≤ 5,1) são favoráveis à ocorrência da doença (DIXON, 2009b;DONALD;PORTER, 2009) e desfavoráveis ao desenvolvimento da cultura (GUERRA et al, 2013).…”

Section: Resultsunclassified

“…Diversos trabalhos apontam efeito positivo de torta de mamona (TM) (Ricinus communis L.) como fertilizante orgânico (SILVA et al, 2012;SILVA et al, 2016;GOMES et al, 2017, MELLO et al, 2018, enquanto outros indicam efeitos positivos no controle de nematoides como Meloidogyne javanica (SEVERINO et al, 2012;FERREIRA, 2012). Não existem relatos, porém, sobre a utilização de TM no manejo da hérnia das crucíferas e em plantas de couve-flor.…”

Section: Introductionunclassified

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Avaliação Preliminar Do Uso De Torta De Mamonano Manejo Da Hérnia Das Crucíferas Em Couve-Flor

et al. 2018

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The production of cauliflower and other brassicas has been impacted worldwide due to the occurrence of the disease clubroot,caused by Plasmodiophora brassicae (Wor.). Therefore, it is necessary to search for disease management strategies that may contribute to reducing the losses caused. The objective of this work was to evaluate the effects ofdoses of castor bean cake(CK) on the severityof the disease and on the growth of cauliflower plants. Two experiments were carried out in a greenhouse where, in tubes and pots, respectively. In the first one, the effects of CK doses (0, 10, 20 and 40 Mg ha-1) on the disease incidence and dry mass of the aerial part of plants (DMAP) were evaluated.In the second, theeffects of thedoses of CK (0, 10, 20, 30 and 40 Mg ha-1) on disease severity, root attributes and biomass accumulation in plants were evaluated. Significant differences were observed in incidence, which decreased, and DMAP, that increased,as a function of doses. There were decreases in the severity of the disease and increasesin the growth of healthy roots. In addition, positive effects on plant height, number of leaves and dry mass of leaves, stemsand roots were observed. It is concluded that the use of castor bean cake was promising and further studies should be performed under field conditions and with longer cycle times

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Section: Resultsunclassified

Section: Introductionunclassified

Avaliação Preliminar Do Uso De Torta De Mamonano Manejo Da Hérnia Das Crucíferas Em Couve-Flor

et al. 2018

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“…Water management was performed by simplified irrigation controller (SIC) [ 16 ], which operates in response to soil water tension and is regulated by the level difference between a porous cap (sensor) and a pressure switch. This device has been used in several field studies [ 17 ] and greenhouse studies [ 18 ], using different soils or substrates for plants. It is presented as an alternative in irrigation management [ 19 ] and has the advantage of being built with low cost materials [ 20 ].…”

Section: Methodsmentioning

confidence: 99%

Water requirement and growth indicators of forest tree species seedlings produced with automated irrigation management

et al. 2020

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The lack of information regarding the water requirement of tree species results in water waste in the seedlings production in nurseries. Water requirement, the growth plant factors and water efficiencies for height and diameter were determined for Schizolobium parahyba (Vell.) Blake, Cytharexylum myrianthum Cham. and Ceiba speciosa Ravenna seedlings, under automated irrigation management and greenhouse conditions, located at 22 o 45’53” S and 43 o 41’50” W. We used sewage sludge biosolids as substrate in the seedling phase (280 cm -3 tube), and sandy soil material in the initial pot growth phase (18 dm -3 pot). In the seedlings phase, four water replacement levels were applied to the substrate, by drip irrigation, corresponding to average replacement ranging from 40 (V1) to 100% (V4) of the species water requirement. Seedlings developed properly and 80 days after emergence, S . parahyba , C . myrianthum and C . speciosa seedlings received, respectively, 2.40, 1.08 and 0.85 L per plant, for V4. After growth phase (230 DAE), the total water volumes were, respectively, 70.0, 50.3 and 52.7 L per plant. Under adequate water supply, there were rapid recovery and growth of the species, even for the seedlings which showed different height and diameter in the tube phase. The growth plant factors values found were below 0.5 for all species indicating low sensitivity to growth, both in height and in diameter, in response to water deficit. Water efficiency indicators point to distinct trends between the two phases, and C . speciosa has higher values of water efficiencies for height (80.7 and 17.0 cm L -1 ) and diameter (2.1 and 0.5 mm L -1 ) in both phases.

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“…6 Water management was realized by simplified irrigation controller (SIC) (Medici et al 2010), which operates in response to soil water tension and is regulated by the level difference between a porous capsule (sensor) and a pressure switch. This device has been used in several field (Mello et al 2018) and greenhouse studies (Gomes et al 2017), using different soil or substrates for plants. It is presented as an alternative in irrigation management (Bezerra et al 2019) and has the advantage of being built with low cost materials (Valença et al 2018).…”

Section: °Cmentioning

confidence: 99%

Water requirement and growth indicators of forest tree species seedlings produced with automated irrigation management

Bueno

Leles

Abreu

et al. 2020

Preprint

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The lack of information regarding the water requirement of tree species promotes water waste in the seedlings production in nurseries. Water requirement, the growth plant factors and water efficiencies for height and diameter were determined for Schizolobium parahyba (Vell.) Blake, Cytharexylum myrianthum Cham. and Ceiba speciosa Ravenna seedlings, under greenhouse conditions and automated irrigation management. We used sewage sludge biosolids as substrate in the seedling phase (280 cm-3 tube), and sandy soil material in the initial pot growth phase (18 dm-3 pot). In the seedlings phase, four water replacement levels were applied to the substrate, by drip irrigation, meaning average replacement ranging from 40 (V1) to 100% (V4) of species water requirement. Seedlings developed properly and 80 days after emergency, S. parahyba, C. myrianthum and C. speciosa seedlings received, respectively, 2.40, 1.08 and 0.85 L per plant, for V4. After growth phase (230 DAE), the total water volumes were, respectively, 70.0, 50.3 and 52.7 L per plant. Under adequate water supply, there were rapid recovery and growth of the species, even for the seedlings which showed different height and diameter in the tube phase. The growth plant factors values found were below 0.5 for all species indicating low sensibility to growth, both in height and in diameter, in response to water deficit. Water efficiency indicators point to distinct trends between the two phases, and C. speciosa present higher values of water efficiencies for height (80.7 and 17.0 cm L-1) and diameter (2.1 and 0.5 mm L-1) in both phases.

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<b>Growth and production of tomato fertilized with ash and castor cake and under varying water depths, cultivated in organic potponics

Cited by 15 publications

References 26 publications

Avaliação Preliminar Do Uso De Torta De Mamonano Manejo Da Hérnia Das Crucíferas Em Couve-Flor

Avaliação Preliminar Do Uso De Torta De Mamonano Manejo Da Hérnia Das Crucíferas Em Couve-Flor

Water requirement and growth indicators of forest tree species seedlings produced with automated irrigation management

Water requirement and growth indicators of forest tree species seedlings produced with automated irrigation management

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