Época de semeadura no Potencial produtivo de Soja em Uberlândia-MG

Amorim, Flávia Aparecida; Hamawaki, Osvaldo Toshiyuki; Sousa, Larissa Barbosa de; Lana, Regina Maria Quintão; Hamawaki, Cristiane Divina Lemes

doi:10.5433/1679-0359.2011v32n4sup1p1793

Cited by 15 publications

(16 citation statements)

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“…For first pod height (FPH), no differences were observed between treatments (Table 3). The mean value of FPH was 18.08 cm between treatments, a value considered as adequate for soybean because plants with FPH above 12 cm reduce losses at harvest, on flat areas (Amorim et al, 2011).…”

Section: Resultsmentioning

confidence: 99%

Soil physical properties and yield of soybean and corn grown with wastewater

Almeida

Santos

Bortolo

et al. 2018

Rev. bras. eng. agríc. ambient.

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A B S T R A C TThis study aimed to evaluate soybean and corn yields and soil physical attributes of a Dystrophic Red Latosol fertilized with swine wastewater (SW). Therefore, a field experiment was conducted in randomized blocks to evaluate five treatments of fertilization in the 2014/2015 season (soybean in the summer and corn in the second season). The treatments were: T1 -control (fertilized exclusively with chemical fertilizers); T2 -fertilized with 1270 m 3 ha -1 of SW; T3 -fertilized with 170 m 3 ha -1 of SW; T4 -fertilized with 50 m 3 ha -1 of SW; and T5 -fertilized with 50 m 3 ha -1 of SW + chemical fertilization. Soil samplings and soil physical analyses were performed before soybean cultivation and after corn harvest. No significant alteration was observed in soil physical attributes during the evaluation period. The application of swine wastewater in the fertilization of soybean and corn, cultivated in Dystrophic Red Latosol with high clay contents, positively affected these crops, since it led to good yields in soybean (with an average of 2990.85 kg ha -1 ) and increased corn yields (with a maximum of 7126.5 kg ha -1 ). In addition, soil physical properties were not altered.Atributos físicos do solo e produtividades de soja e milho cultivadas com água residuária R E S U M O Objetivou-se avaliar as produtividades de soja, milho e os atributos físicos de um Latossolo Vermelho Distroférrico fertilizado com água residuária de suinocultura (ARS). Para isso, foi realizado um experimento a campo utilizando o delineamento em blocos casualizados. Foram avaliados cinco tratamentos de adubação na safra 2014/2015 (soja no verão e milho segunda safra). Os tratamentos foram: T1 -Controle (fertilizado exclusivamente com adubação química); T2 -Fertilizado com 1270 m 3 ha -1 de ARS; T3 -fertilizado com 170 m 3 ha -1 de ARS; T4 -Fertilizado com 50 m 3 ha -1 de ARS; e, T5 -Fertilizado com 50 m 3 ha -1 de ARS mais adubação química. Amostragens e análises físicas de solo foram realizadas antes do cultivo da soja e após a colheita do milho. Em relação aos atributos físicos do solo, não houve alterações significativas durante o período avaliado. A aplicação de água residuária de suinocultura na fertilização dos cultivos de soja e milho, cultivadas num solo Latossolo Vermelho Distroférrico com alto teor de argila, influenciaram positivamente esses cultivos, uma vez que proporcionou boas produtividades para soja (com média de 2990,85 kg ha -1 ) e incremento de produtividade para o milho (com máxima de 7126,5 kg ha -1 ). Além disso, os atributos físicos do solo não foram alterados.

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Section: Resultsmentioning

confidence: 99%

Soil physical properties and yield of soybean and corn grown with wastewater

Almeida

Santos

Bortolo

et al. 2018

Rev. bras. eng. agríc. ambient.

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“…In general, RR genotypes with higher PHM had higher values of GY. According to Amorim et al (2011), it must be considered a minimum PHM of 50 cm for soybean, whereas Carvalho et al (2010) claim that plants with PHM higher than 100 cm tend to lodging and hinder the efficiency of harvesters at harvest. Thus, both the RR and the conventional genotypes had satisfactory values for PHF and PHM, being close or equal to the recommended value for the trait.…”

Section: Resultsmentioning

confidence: 99%

Agronomic performance and path analysis of roundup ready and conventional soybean from two-way crosses in the northwestern of So Paulo, Brazil

Leite¹,

Uneda-Trevisoli²,

Groli³

et al. 2016

Afr. J. Agric. Res.

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The aim of this study was to compare the agronomic performance of RR soybean genotypes with conventional soybean genotypes derived from two-way crosses and evaluate through path analysis the influence of important traits for culture on the grain yield (GY) in the Northwestern of São Paulo, Brazil. It was used the randomized block design with three replications. Among the analyzed RR genotypes, three genotypes has high GY, with average values over 4575.5 kg ha-1 , while among the conventional, ten genotypes, and the check Conquista showed superiority for GY, with average values over 3511.4 Kg ha-1. In general, the most productive RR soybean genotypes showed higher values when compared with conventional genotypes with higher yield. However, conventional soybean showed a higher number of superior genotypes with similar behavior when compared to the RR soybean. For the group of RR soybean genotypes, all agronomic traits, except one hundred seed weight (HSW), correlated positively with GY. For the group of conventional soybean genotypes, there was no significant correlation between GY and all agronomic traits analyzed. The genotypic correlation and path analysis indicate the plant height at flowering (PHF) and plant height at maturity (PHM) as the most favorable and direct effect on GY.

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“…Yield reduction in late sowing dates for both early and later cultivars may be related to the effect of early flowering with growing cycle shortening (Amorim et al, 2011), resulting in plant height and total dry biomass reduction. This hinders grain filling and results in yield losses.…”

Section: Resultsmentioning

confidence: 99%

“…According to Amorim et al (2011), who studied seven soybean cultivars with different maturation cycles in relation to four sowing dates (10-30, 11-15, 12-14 and 12-31) in Uberlândia -MG, it was observed that, in the first dates (10-30 and 11-15), cultivars had higher height (100 cm on average), while the average height was only 77cm in late sowing (12)(13)(14)(15)(16)(17)(18)(19)(20)(21)(22)(23)(24)(25)(26)(27)(28)(29)(30). Thus, the statement that late sowing results in plants with lower height when compared to those planted at the recommended time is confirmed.…”

Section: Figure 2 -Interactions Between Soybean Cultivars and Sowing mentioning

confidence: 99%

Soybean morphological and productive characteristics influenced by meteorological parameters and sowing dates

Schwerz¹,

Caron²,

Elli³

et al. 2016

Científica

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The aim of this study was to evaluate the influence of meteorological elements on soybean morphological and productive characteristics in five sowing dates. The randomized block design was used in a 5x5 factorial, with the following five sowing dates during the year 2013: the first (10-15), second (10-30), third (11-15), fourth (30-11) and fifth (12)(13)(14)(15) 2013), and the following five soybean cultivars: BMX Alvo RR, BMX Veloz RR, CCGL Tec 5721 IPRO, BMX Tornado RR and CCGL Tec 7849 IPRO, with three repetitions. Total dry biomass, leaf area index, plant height, number of pods per plant, number of grains per plant, 1000-grain weight and yield were assessed. According to analysis of variance, significant difference was found for all variables in the cultivar x sowing date interaction. Soybean cultivars morphological and productive characteristics were influenced by meteorological elements and sowing dates. Leaf area index and total dry biomass had the highest means in 11-15 and 11-30, coinciding with the highest grain yield means, obtained for Veloz and Tornado cultivars, respectively. These results were obtained because these sowing dates had the best conditions, with air temperatures between 13.4 and 34.2 °C, accumulated solar radiation of 3074.009 MJ m -2 , accumulated thermal time of 1959.15 °C days and total rainfall of 732.8 mm.Additional keywords: Glycine max L.; leaf area index; solar radiation; thermal time; yield. ResumoO objetivo deste trabalho foi avaliar a influência dos elementos meteorológicos sobre as características morfológicas e produtivas da soja em cinco épocas de semeadura. O delineamento utilizado foi o de blocos ao acaso, em esquema fatorial 5x5, com cinco épocas de semeadura: primeira (15-10), segunda (30-10), terceira (15-11), quarta (30-11) e quinta (15-12 de 2013) e cinco cultivares de soja: BMX Alvo RR, BMX Veloz RR, CCGL Tec 5721 IPRO, BMX Tornado RR e CCGL Tec 7849 IPRO, com três repetições. Avaliaram-se a biomassa seca total, o índice de área foliar, a altura de plantas, o número de vagens por planta, o número de grãos por planta, a massa de mil grãos e a produtividade. De acordo com a análise de variância, constatou-se diferença significativa para todas as variáveis analisadas na interação cultivar x época de semeadura. As características morfológicas e produtivas das cultivares de soja são influenciadas pelos elementos meteorológicos e pela época de semeadura. O índice de área foliar e a biomassa seca total apresentam as maiores médias na época de semeadura do dia 15-11 e 30-11, coincidindo com as maiores médias de produtividade de grãos obtidas para as cultivares Veloz e Tornado, respectivamente. Tais resultados foram obtidos devido a esta época de semeadura apresentar as melhores condições, sendo a temperatura do ar entre 13,4 e 34,2°C, a radiação solar incidente acumulada de 3.074,009 MJ m -2 , a soma térmica acumulada de 1.959,15 °C dias e precipitação pluviométrica total de 732,8 mm.Palavras-chave adicionais: Glycine max L.; índice de área foliar; produtividade;...

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Época de semeadura no Potencial produtivo de Soja em Uberlândia-MG

Cited by 15 publications

References 1 publication

Soil physical properties and yield of soybean and corn grown with wastewater

Soil physical properties and yield of soybean and corn grown with wastewater

Agronomic performance and path analysis of roundup ready and conventional soybean from two-way crosses in the northwestern of So Paulo, Brazil

Soybean morphological and productive characteristics influenced by meteorological parameters and sowing dates

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