Crescimento, acúmulo de nutrientes e produtividade da cultura da couve-flor

Castoldi, Renata; Charlo, Hamilton César de Oliveira; Vargas, Pablo Forlán; Braz, Leila Trevisan

doi:10.1590/s0102-05362009000400007

Cited by 29 publications

(37 citation statements)

References 6 publications

(4 reference statements)

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“…The highest nutrient uptake and growth of cabbage occurs between 60 and 70 days after transplanting (Fontanétti et al, 2006). For broccoli it begins 40 days after transplanting, and for cauliflower 54-69 days after transplanting (Castoldi et al, 2009). The uptake of nutrients released from the residues of cover crops does not appear to have occurred, because the lack of interaction between the cover crop and fertilizer doses shows that there was no synchrony between the period of high nutrient release, which takes place for up to 42 days under rainfed conditions (Torres et al, 2008;Fabian, 2009;Assis et al, 2013), and the period of high nutrient uptake by these crops.…”

Section: Cabbage (Brassica Oleracea Var Capitata)mentioning

confidence: 99%

Application of different cover crops and mineral fertilizer doses for no-till cultivation of broccoli, cauliflower and cabbage

Torres¹,

Gomes²,

Barreto³

et al. 2017

Aust J Crop Sci

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No-till practices have not been widely adopted by vegetable producers due to the necessity of seedbed preparation to incorporate organic fertilizers and plant residues of the preceding crops. This study evaluated biomass yield and residue decomposition of different cover crops, and their influence on agronomic performance of Brassica crops cultivated under no-till system. The experiment was laid out in randomized complete blocks with 4 x 3 factorial treatment combinations of four cover crops: Sunn hemp (SH), Signal grass (SG), Pearl millet (PM), and SH + PM mixture, and three doses of mineral fertilizer-0, 50, and 100% of the recommended fertilizer doses for broccoli. The same design and treatments were used for cauliflower and then for cabbage, separately.. The experiment was carried out with 4 repetitions on parcels of 20 m 2 . No beds were raised, for the planting of seedlings was done in pits. The following agronomic traits were evaluated: Dry biomass (DB) and decomposition of cover crop residues (DR), and the number of leaves (NL), height (H), fresh head weight (FHW) and dry head weight (DHW), and yield (Y) of Brassica crops. The highest DB occurred in treatments with SH (Give value). SG presented the highest DR constant and the shortest half-life of residues in this study.; Broccoli presented better agronomic performance when cultivated on residues containing SH.; Fertilizer doses influenced broccoli and cabbage productivity, which were the highest for the treatment with 100% dose of mineral fertilizer.

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Section: Cabbage (Brassica Oleracea Var Capitata)mentioning

confidence: 99%

Application of different cover crops and mineral fertilizer doses for no-till cultivation of broccoli, cauliflower and cabbage

Torres¹,

Gomes²,

Barreto³

et al. 2017

Aust J Crop Sci

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“…The growth behavior aforementioned has been observed in other brassicas, which showed reduced dry matter accumulation in the initial period of vegetative growth (Castoldi et al, 2009;Gondim et al, 2011).…”

Section: Dry Matter Accumulationmentioning

confidence: 61%

“…In addition, absorbed nutrient amounts may vary according to genotype, farming systems, climatic conditions, soil and other factors, which make fertilizer recommendations adopted by growers inappropriate to new production systems (Castoldi et al, 2009). Therefore, in order to maximize fertilization efficiency, the nutrient supply must meet the plant demand, both in quantity as in relation to application periods.…”

Section: Introductionmentioning

confidence: 99%

Broccoli growth and nutrient accumulation

Filho¹,

Carmona²,

Schiavon³

2017

Científica

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Single-head broccoli production has been increasingly popular among Brazilian olericulture farmers, although there is still little information regarding its nutrition. The aim of this paper was to study dry matter and nutrient uptake rate in single-head broccoli. The experiment was conducted during the period from March to May 2006 in Itatiba, SP, Brazil. The experimental design was completely randomized, with four repetitions. Plant samples were taken at 15, 25, 35, 45, 55, 65 and 75 days after transplanting (DAT), in order to determine leaf, stem and inflorescence dry matter and nutrients in each period. The plant had slow growth until 35 DAT, with little dry matter accumulation, increasing afterwards until the end of crop cycle. The largest dry matter accumulation occurred between 45 and 55 DAT, with an estimated increase of 2,068.75 mg plant -1 day -1. Nutrient absorption followed the plant dry matter accumulation curve. From its formation, inflorescence becomes the main sink of all nutrients in the broccoli plant. Accumulated nutrients, in decreasing order, were N > K > Ca > Mg > S > P > Fe > > Mn > Zn > B > Cu, respectively.Additional keywords: Brassica oleracea var. italic; fertilization; nutrient absorption. ResumoA produção de brócolis de cabeça única está sendo cada vez mais popular entre os olericultores brasileiros; contudo, há escassez de informação referente à nutrição dessa olerícola. O objetivo deste trabalho foi estudar a marcha de acúmulo de massa seca e de nutrientes em brócolis de cabeça única. O experimento foi conduzido durante o período de março a maio de 2006, no município de Itatiba-SP. O delineamento experimental foi o inteiramente casualizado, com quatro repetições. As amostragens de plantas foram realizadas aos 15; 25; 35; 45; 55; 65 e 75 dias após o transplante (DAT), para a determinação da massa seca e nutrientes de folhas, caule e inflorescência, em cada época. A planta teve crescimento lento até 35 DAT, com pequeno acúmulo de massa seca, e a partir daí, intensificou-se até o final do ciclo de cultivo. O maior acúmulo de massa seca ocorreu entre 45 e 55 DAT, com incremento estimado de 2.068,75 mg planta -1 dia -1. A absorção de nutrientes seguiu a curva de acúmulo de massa seca pelas plantas. A partir de sua formação, a inflorescência passa a ser o dreno principal de todos os nutrientes na planta. A ordem decrescente dos nutrientes acumulados foi: N > K > Ca > Mg > S > P > > Fe > Mn > Zn > B > Cu, respectivamente.Palavras-chave adicionais: absorção de nutrientes; adubação; Brassica oleracea var. italica.

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“…Considerando-se que há uma tendência de redução da TAL com a idade das plantas, por causa do sombreamento de folhas inferiores (Castoldi et al, 2009), é possível explicar os menores índices observados ao final do ciclo, especialmente para as doses de 150 e de 195 kg ha -1 de N, em função do papel do nitrogênio no incremento da eficiência fotossintética no desenvolvimento da planta, condicionando maior autossombreamento. O tratamento testemunha, por sua vez, alcançou maior TAL, assim como maiores TCA e TCR, ao final do ciclo, em relação às dos demais tratamentos, em função do menor autossombreamento das plantas, resultante do crescimento mais lento e do menor acúmulo de matéria seca ao longo do ciclo.…”

Section: Resultsunclassified

Análise de crescimento e produtividade do pak choi cultivado sob diferentes doses de nitrogênio

et al. 2013

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Growth analysis and productivity of Pak choi grown under different nitrogen ratesThe aim of the present study was to evaluate the influence of nitrogen rates on growth and yield of Pak choi. The experiment was carried out under greenhouse conditions from October to November 2007 in Marechal Cândido Rondon, PR. The experimental design was randomized block design, with five treatments (0, 60, 105, 150, 195 kg ha -1 of N) and four replicates. The nitrogen was applied in three different times (transplanting, 7 and 14 days after transplanting) and five collections were performed in intervals of seven days. Based on dry matter production and leaf area, were calculated the growth parameters relative and absolute growth rate, net assimilation rate, leaf area ratio and leaf area specific. At harvest were evaluated plant height, diameter, shoot fresh weight and yield. Nitrogen fertilization until 195 kg ha -1 of N provides increases in growth and productivity of Pak choi. . Foram realizadas cinco coletas das plantas, semanalmente, avaliando-se a produção de massa da matéria seca e área foliar, para obtenção das taxas de crescimento absoluto e relativo, taxa assimilatória líquida, razão de área foliar e área foliar específica. Na colheita, foram avaliados altura da planta, diâmetro e matéria fresca da parte aérea e produtividade. Incrementos na adubação nitrogenada até a dose de 195 kg ha -1 proporcionam incrementos no crescimento e produtividade do pak choi. Palavras-chave:Brassica campestris var. chinensis L., adubação nitrogenada, taxa de assimilação líquida. 499Análise de crescimento e produtividade do pak choi cultivado sob diferentes ...

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Crescimento, acúmulo de nutrientes e produtividade da cultura da couve-flor

Cited by 29 publications

References 6 publications

Application of different cover crops and mineral fertilizer doses for no-till cultivation of broccoli, cauliflower and cabbage

Application of different cover crops and mineral fertilizer doses for no-till cultivation of broccoli, cauliflower and cabbage

Broccoli growth and nutrient accumulation

Análise de crescimento e produtividade do pak choi cultivado sob diferentes doses de nitrogênio

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