Extração e exportação de nutrientes pelo híbrido de mamona Savana: I – Macronutrientes

Crusciol, Carlos Alexandre Costa; Nascimento, Martha Santana do; Fernandes, Adalton Mazetti; Zanotto, Maurício Dutra

doi:10.5433/1679-0359.2012v33supl1p2616

Cited by 3 publications

(15 citation statements)

References 6 publications

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“…In the vegetative period of both seasons, K and Mg contents in the stem of Lyra hybrid were higher than in leaves, although the opposite occurred to the other macronutrients (Table 1), as it was also observed in the Savana castor hybrid by Crusciol et al (2012a). The results show that, in the vegetative period, K and Mg are concentrated on the castor plant stem, where they are subsequently translocated to reproductive structures (Table 1) Científica, Jaboticabal, v.45, n.1, p.41-50, 2017ISSN: 1984 44 higher levels in the stem than in the leaves (Table 1).…”

Section: Resultssupporting

confidence: 51%

“…As castor growth and yield are directly related to its proper nutrition (Crusciol et al, 2012a), it is expected that a proper nutrient supply will result in grain yield increases. Therefore, studies have been conducted to assess the nutritional requirement of modern castor bean hybrids (Crusciol et al, 2012a;Crusciol et al, 2012b;Nascimento et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, studies have been conducted to assess the nutritional requirement of modern castor bean hybrids (Crusciol et al, 2012a;Crusciol et al, 2012b;Nascimento et al, 2012). However, little research has been conducted to evaluate dynamic allocation of biomass and nutrients in different castor plant organs (Hocking, 1982), as well as the contribution of these processes to the crop final yield.…”

Section: Introductionmentioning

confidence: 99%

“…However, such processes are highly dependent on plant nutritional status, given that nutrients are implicated in several physiological processes related to vegetative development, ripening and senescence (Moreira & Fageria, 2009). Some research has indicated that, in castor plants, nutrient demand is associated to DM accumulation (Crusciol et al, 2012a;Crusciol et al, 2012b;Nascimento et al, 2012), showing that higher DM production is consequently followed by higher nutritional demands. However, plant nutrient demand may not vary according to yield, as when fruiting is low, leaf and stem vegetative growth may replace the fruit as carbohydrate and nutrient sinks in the plant (Malavolta et al, 2002).…”

Section: Introductionmentioning

confidence: 99%

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Dry matter and nutrient partitioning in Castor plants in two growing seasons

Castro¹,

Crusciol²,

Fernandes³

et al. 2017

Científica

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The aim of the present study was to evaluate dry matter partitioning and macro-and micronutrient accumulation and distribution in small-sized castor plants grown in season and off-season. The experiments were conducted during the 2005-2006 season and in the 2006 off-season in an Oxisol. A completely randomized block design was used, with eight replications. Plots consisted of plant sampling periods, which were conducted in the vegetative period (17 days after emergence -DAE), the grain fill period (between 73 and 80 DAE) and at end of the cycle (120 DAE). Castor leaves accumulated most of dry matter (DM) and macroand micronutrients in the vegetative period, regardless of the growing period. In the following cycle periods, most of biomass and nutrients were located in the reproductive structures and grains, especially in the offseason crop. It was concluded that leaves and stems are strong nutrient sinks in the castor plant in season crops, while lower water availability during off-season induces plants to use physiological mechanisms to allocate more resources (biomass and nutrients) for their reproduction.Additional keywords: dry matter; macronutrients; micronutrients; Ricinus communis; source/sink relation. ResumoObjetivou-se neste estudo avaliar a partição de matéria seca, o acúmulo e a distribuição de macro e micronutrientes em mamona de porte baixo, cultivada na safra e na safrinha. Os experimentos foram conduzidos na safra de 2005-2006 e na safrinha de 2006, em Latossolo Vermelho distroférrico. Utilizou-se do delineamento em blocos casualizados, com oito repetições. As parcelas foram constituídas pelas épocas de coleta de plantas, que foram realizadas na fase vegetativa (17 dias após a emergência -DAE), na fase de enchimento de grãos (entre 73 e 80 DAE) e no final do ciclo (120 DAE). As folhas da mamoneira, na fase vegetativa, acumularam a maior parte da matéria seca (MS) e dos macros e micronutrientes, independentemente da época de cultivo. Nas fases seguintes do ciclo, a maior proporção de biomassa e nutrientes estava presente nas estruturas reprodutivas e nos grãos, especialmente no cultivo de safrinha. Conclui-se que, no cultivo de safra, as folhas e os caules são fortes drenos de nutrientes na planta de mamona, enquanto na safrinha a menor disponibilidade hídrica faz com que as plantas utilizem mecanismos fisiológicos para alocar mais recursos (biomassa e nutrientes) para sua reprodução.Palavras-chave adicionais: macronutrientes; matéria seca; micronutrientes; relação fonte/dreno; Ricinus communis.

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Section: Resultssupporting

confidence: 51%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Dry matter and nutrient partitioning in Castor plants in two growing seasons

Castro¹,

Crusciol²,

Fernandes³

et al. 2017

Científica

Self Cite

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“…In the case of the cultivar BRS Energia, the mean yield is 1,800 kg ha -1 under rainfed conditions, in regions where rainfall is at least 500 mm. Regarding the nutritional requirement, Crusciol et al (2012) observed that the hybrid Savana extracted 31 to 155 kg of N, 3 to 17 kg of P, 13 to 71 kg of K, 12 to 56 kg of Ca, 4 to 28 kg of Mg and 7 to 29.5 kg of S per hectare in off season and season, respectively.…”

Section: Introductionmentioning

confidence: 99%

Landfill leachate as nutritional source in castor bean cultivation under semi-arid conditions

Filho

Dias

Batista

et al. 2018

Rev. bras. eng. agríc. ambient.

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A B S T R A C TThe relevance of using technology for the rational destination of waste from a wide range of human activities is imminently paramount. In this context, between September 2014 and January 2015, in Mossoró, RN, Brazil (5º 11' 31'' S; 37º 20' 40'' W), the present work was conducted to evaluate strategies for the utilization of landfill leachate as source of water and nutrients in agriculture. For this, castor bean plants (Ricinus communis L.), cv. BRS Energia, cultivated in eutrophic Red Yellow Argisol, were subjected to irrigation depth application strategies, namely: initial application of leachate corresponding to 20, 40, 60 and 80% of the irrigation depth and subsequent application of the remaining water depth percentage using public-supply water, plus one control, which consisted of irrigation with publicsupply water + mineral fertilization recommended for the crop. These treatments were set in randomized blocks, with four replicates, totalizing twenty experimental plots. Mineral fertilization resulted in more expressive biometric responses at the beginning of the cycle; however, at the end, treatments based on leachate led to results, including of production, compatible with the control, especially plants irrigated with the 20% irrigation depth.Percolado de aterro sanitário como fonte nutricional no cultivo da mamoneira em condições semiáridas R E S U M OA pertinência do uso da tecnologia para destinação racional dos resíduos oriundos das mais diversas atividades humanas é iminentemente precípua. Neste contexto, entre setembro de 2014 e janeiro de 2015, em Mossoró, RN (5º 11' 31'' Sul -37º 20' 40'' Oeste), desenvolveu-se o presente trabalho com o objetivo de avaliar o uso de estratégias com vistas ao aproveitamento do percolado de aterro sanitário como fonte de água e nutrientes na agricultura. Para tal, submeteram-se plantas de mamona (Ricinus communis L.) cv. BRS Energia, cultivadas em Argissolo vermelho-amarelo Eutrófico, a estratégias de aplicação da lâmina de irrigação, a saber, a aplicação inicial do percolado de aterro sanitário correspondente a 20, 40, 60 e 80% da lâmina e a posterior aplicação do percentual restante da lâmina de irrigação em água de abastecimento, mais uma testemunha que consistiu na irrigação com água de abastecimento + adubação mineral recomendada para a cultura. Estes tratamentos foram alocados em blocos ao acaso, com quatro repetições, totalizando vinte parcelas experimentais. Verificou-se que a fertilização mineral resultou em respostas biométricas mais expressivas no início do ciclo, no entanto, ao final, os tratamentos à base de percolado proporcionaram resultados, inclusive de produção, compatíveis com a testemunha, com destaque para as plantas irrigadas com 20% da lâmina.

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Seed productivity, oil content and accumulation of macronutrients in safflower (Carthamus tinctorius L.) genotypes in subtropical region

Júnior¹,

Paschoal²,

Pereira³

et al. 2017

Aust J Crop Sci

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The objective of this study was to evaluate eighteen genotypes of safflower and their absorption of macronutrients in an experiment conducted in the western region of the state of Paraná. The experiment was conducted under humid subtropical climate on Typic Hapludox soil with very clayey texture. The treatments were carried out in randomized blocks with four replications. The following traits were evaluated: shoot dry mass production, seed yield, shoot and seed macronutrient accumulation, and oil production. Data were submitted to analysis of variance and the means compared by Scott-Knott test at 5%. The mean seed yield was 4,531.8 kg ha -1 and the mean oil content was 26%. The descending order of safflower macronutrient uptake was N > K > Ca > P > Mg > S, in all genotypes, and macronutrient export was N > P > K > Mg > S > Ca. Mobility of macronutrients extracted from seeds was low for K and Ca, medium for Mg and S, and high for N and P. The genotypes with higher average yield were less efficient in their utilisation of nutrients.

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Extração e exportação de nutrientes pelo híbrido de mamona Savana: I – Macronutrientes

Cited by 3 publications

References 6 publications

Dry matter and nutrient partitioning in Castor plants in two growing seasons

Dry matter and nutrient partitioning in Castor plants in two growing seasons

Landfill leachate as nutritional source in castor bean cultivation under semi-arid conditions

Seed productivity, oil content and accumulation of macronutrients in safflower (Carthamus tinctorius L.) genotypes in subtropical region

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