Características agronômicas e rendimento de sementes de soja na semeadura realizada no período de safrinha

Braccini, Alessandro de Lucca e; Motta, Ivo de Sá; Scapim, Carlos Alberto; Lana, Maria do Carmo; Ávila, Marizangela Rizzatti; Meschede, Dana Kátia

doi:10.1590/s0006-87052004000100009

Cited by 15 publications

(24 citation statements)

References 10 publications

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“…Sowing time is directly related to the success of the crop due to environmental changes such variation in water levels, temperature, and solar radiation available to plants (BARBOSA et al, 2013;SUBEDI et al, 2007). Delayed sowing and/or the timing of the late season may cause significant losses of 30-70% compared with the recommended sowing period (BRACCINI et al, 2004;RODRIGUES et al, 2008;STÜLP et al, 2009). This led to the adoption of sowing dates that are associated with climatic conditions similar to those required by the plants, which is extremely important for good productive performance of crops (PEIXOTO et al, 2000;RIBEIRO et al, 2000).…”

Section: Introductionmentioning

confidence: 99%

Determination of the adaptability and stability of soybean cultivars in different locations and at different sowing times in Paraná state using the AMMI and Eberhart and Russel methods

Silveira

Pricinotto

Nardino

et al. 2016

SCA

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This study aimed to evaluate the adaptability and phenotypic stability of 10 soybean genotypes in 12 environments in Paraná state by using the additive main effects and multiplicative interaction analysis (AMMI) and Eberhart and Russell models. The assays were conducted in a randomized complete block design with three replicates, in the 2010/2011 season in four locations in Paraná state (Assaí, São Pedro do Ivaí, Cornélio Procópio, and Marilândia do Sul), and with three sowing dates (15/-20/10/10; 29/10-03/11/10; 15/-20/11/10). The cultivars tested with Roundup Ready® technology included SYN 1049, SYN 1152, SYN 1059, SYN 3358, SYN 1163, SYN 1157, V-MAX, FT Campo Mourão, BMX Potência, and SYN 9070. The yield character was analyzed. Data were submitted to analysis of variance and the adaptability and stability were then analyzed. The results of the AMMI and Eberhart and Russell models were somewhat consistent for the stability parameter only. The AMMI analysis was able to capture 66% of the variance associated with residue no additives, of which 43.18% was retained in the first principal component of interaction and 23.58%, in the second component. This is sufficient to explain the genotype × environment interaction. The SYN 1059, SYN 1163, and VMAX genotypes are distinguished by their considerably higher yield and productive adaptation. In the AMMI analysis, the cultivar SYN 1163 showed commercial promise among the other cultivars for high grain yield performance, adaptation, and response predictability. Key words: Biometric models. Predictability. Grain yield. Different environments. -20/10/10; 29/10/10 -03/11/10; 15/11/10 -20/11/10). Resumo

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Section: Introductionmentioning

confidence: 99%

Determination of the adaptability and stability of soybean cultivars in different locations and at different sowing times in Paraná state using the AMMI and Eberhart and Russel methods

Silveira

Pricinotto

Nardino

et al. 2016

SCA

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Section: Introductionunclassified

“…O fotoperíodo e a temperatura, notadamente, exercem influência sobre o número de primórdios reprodutivos e a taxa de desenvolvimento, com reflexos sobre a estatura de planta, o ciclo e o potencial de produtividade da cultura (Braccini et al, 2004;Rodrigues et al, 2006;Jiang et al, 2011). Além disso, existe grande variabilidade entre as cultivares quanto à sensibilidade ao fotoperíodo e à temperatura, sendo que a primeira é considerada o principal fator determinante da adaptação das cultivares (Rodrigues et al, 2001b;Carvalho et al, 2002).…”

Section: Introductionunclassified

“…A semeadura tardia pode acarretar perdas da ordem de 30 a 50% na produtividade de grãos, enquanto semeaduras na época de safrinha podem causar perdas de até 70%, em relação à época recomendada (Rodrigues et al, 2001a;Braccini et al, 2004;Rodrigues et al, 2008;Stülp et al, 2009). Portanto, a adoção de épocas de semeadura que propiciem condições climáticas próximas às exigidas pelas plantas é de extrema importância para um bom desempenho produtivo das lavouras (Peixoto et al, 2000).…”

Section: Introductionunclassified

“…Além disso, temse observado a semeadura da soja safrinha, instalada em sucessão à cultura do milho (Peixoto et al, 2000;Braccini et al, 2004). Contudo, em virtude das diferenças edafoclimáticas e do lançamento de novas cultivares, são necessários mais estudos regionalizados para que se possa avaliar melhor o efeito dos fatores ambientais no desenvolvimento das plantas de soja, nas diferentes épocas de semeadura.O fotoperíodo e a temperatura, notadamente, exercem influência sobre o número de primórdios reprodutivos e a taxa de desenvolvimento, com reflexos sobre a estatura de planta, o ciclo e o potencial de produtividade da cultura (Braccini et al, 2004;Rodrigues et al, 2006;Jiang et al, 2011). Além disso, existe grande variabilidade entre as cultivares quanto à sensibilidade ao fotoperíodo e à temperatura, sendo que…”

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Épocas de semeadura e desempenho agronômico de cultivares de soja

Meotti

Benin

Silva

et al. 2012

Pesq. agropec. bras.

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Resumo -O objetivo deste trabalho foi avaliar o efeito de épocas de semeadura no desempenho agronômico de cultivares de soja em São Domingos, SC, e indicar as cultivares mais estáveis e adaptadas a cada época. O experimento foi conduzido durante dois anos agrícolas (2008/2009 e 2009/2010), com seis cultivares e quatro épocas de semeadura (15/10, 15/11, 15/12 e 15/1), em delineamento experimental de blocos ao acaso, com três repetições e parcelas com área útil de 3,6 m². A metodologia AMMI (modelos de efeitos principais aditivos com interação multiplicativa) foi utilizada para avaliar o desempenho produtivo das cultivares, e a GGE (genótipo e interação genótipo x ambiente) para avaliar a adaptabilidade e a estabilidade das cultivares nas diferentes épocas de semeadura. Em ambos os anos agrícolas, as semeaduras em 15/10 e 15/11 maximizaram o número de vagens por planta, o número de grãos por vagem, a estatura das plantas, o número de ramos, a massa de mil sementes e, consequentemente, a produtividade de grãos. As cultivares de ciclo médio ou precoce com porte elevado são mais adequadas para semeaduras tardias.Termos para indexação: Glycine max, AMMI, GGE biplot, interação genótipo x ambiente, produtividade de grãos. Sowing dates and agronomic performance of soybean cultivarsAbstract -The objective of this work was to evaluate the effect of sowing dates on the agronomic performance of soybean cultivars in São Domingos, SC, Brazil, and to indicate stable and adapted cultivars for each sowing date. The experiment was carried out during two crop years (2008/2009 and 2009/2010), using six cultivars and four sowing dates (10/15, 11/15, 12/15, and 1/15), in a randomized complete block design, with three replicates and a usable plot area of 3.6 m 2 . The AMMI (additive main effects and multiplicative interaction analysis) method was used to evaluate the yield performance of the cultivars, and the GGE (genotype and genotype-by-environment) method to evaluate the adaptability and stability of the cultivars in each sowing date. In both crop years, the sowings on 10/15 and 11/15 maximized the number of pods per plant, the number of grains per pod, plant height, the number of branches, the weight of a thousand seeds, and, consequently, grain yield. Medium or early cycle cultivars, with high plant height, are more adequate for late sowing.Index terms: Glycine max, AMMI, GGE biplot, genotype x environment interaction, grain yield. IntroduçãoA soja [Glycine max (L.) Merril] é o principal cultivo no oeste catarinense, onde ocupa aproximadamente 216 mil hectares, o que corresponde a 61% da área cultivada com a cultura no estado (Síntese anual da agricultura de Santa Catarina, 2010). Nesta região, os riscos climáticos e os preços relativamente baixos na comercialização do trigo têm levado ao cultivo da soja em épocas não recomendadas.A soja tem sido semeada precocemente para viabilizar o cultivo de milho safrinha. Além disso, temse observado a semeadura da soja safrinha, instalada em sucessão à cultura do milho (Peixoto et al., 2000...

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Yield stability of soybean cultivars in response to sowing date in the lower latitude Brazilian Savannah Highlands

2014

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SUMMARYAcquisition of high-yielding stable cultivars, a major target for breeding, is achievable by repeated trials across different locations and seasons. The hypothesis is whether evaluation of sowing date and season could be used to assess yield stability for tropical soybean, a photoperiod-sensitive plant. Determinate growth cultivars BRSOY-1, BRSOY-2, BRSOY-3, BRSOY-4, BRSOY-5, BRSOY-6, BRSOY-7, BRSOY-8 and BRSOY-9, of early, mid-cycle and late maturity, were tested at six sowing dates in three growing seasons (2005–2008), in Planaltina, DF Brazil. Data on degree days to first flower and physiological maturity, plant and first pod height, and grain yield were analysed. BRSOY-3, BRSOY-5 and BRSOY-7 were the most stable, measured across 18 environments (year×sowing date), demonstrating selection effectiveness. Determinate growth explained low yields in late-sown treatments, as the photoperiod response reduced the reproductive phase. Late cultivars had photoperiod effect confounded with dry spells at the end of the rainy season. Genotypic stability for high yield in soybean is envisaged as a function of maturity group and long reproductive period. Manipulating the response to maturity and introduction of indeterminate growth habit is expected to increase yields across the sowing period, consolidating tropical soybean production. The method could be used for cultivar release and to define selection schemes aiming at recombinants for delayed maturity.

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Características agronômicas e rendimento de sementes de soja na semeadura realizada no período de safrinha

Cited by 15 publications

References 10 publications

Determination of the adaptability and stability of soybean cultivars in different locations and at different sowing times in Paraná state using the AMMI and Eberhart and Russel methods

Determination of the adaptability and stability of soybean cultivars in different locations and at different sowing times in Paraná state using the AMMI and Eberhart and Russel methods

Épocas de semeadura e desempenho agronômico de cultivares de soja

Yield stability of soybean cultivars in response to sowing date in the lower latitude Brazilian Savannah Highlands

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