Populações de plantas na cultura da soja em cultivares convencionais e Roundup ReadyTM

Ludwig, Marcos Paulo; Dutra, Luiz Marcelo Costa; Filho, Orlando Antônio Lucca; Zabot, Lucio; Jauer, Adilson; Uhry, Daniel

doi:10.1590/s0034-737x2011000300010

Cited by 20 publications

(17 citation statements)

References 12 publications

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“…SOARES et al (2015), in research conducted in Minas Gerais, confirmed that there is an interaction between the densities of sowing and soybean cultivars and showed that the population of 300 thousand plants per hectare is the most suitable for cultivation in the evaluated sites. Results obtained by LUDWIG et al (2011) also corroborate the existence of cultivars x population interaction. Evaluating different soybean cultivars in three plant populations (250, 400 and 550 thousand plants ha -1 ), the authors obtained better results for the population of 550 thousand plants ha -1 .…”

Section: Introductionsupporting

confidence: 69%

Productive performance of soybean cultivars grown in different plant densities

et al. 2017

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Plants density in soybean cultivation is an important management practice to achieve high grain yield. In this way, the objective was to evaluate the agronomic traits and grain yield in soybean in different plant densities, in two locations in the south of Minas Gerais. The experimental design was in randomized blocks, arranged in a split plot design, with three replications. Plots were composed of four population densities (300, 400, 500 and 600 thousand plants per hectare) and the subplots were composed of six cultivars (‘BMX Força RR’, ‘CD 250 RR’, ‘FMT 08 - 60.346/1’, ‘NA 5909 RR’, ‘TMG 7161 RR’ and ‘V - TOP RR’) grown in Lavras and Inconfidentes, both in Minas Gerais. At the time of harvest was determined the plant height, lodging, insertion of the first pod, harvest index, number of pods per plant, number of grains, number of grains per pod and yield. Regardless of the soybean cultivar, the plant density of up to 600,000 per ha does not affect grain yield, plant height, lodging, harvest index, and number of grains per pod. The cultivars ‘V-TOP RR’ and ‘BMX FORÇA RR’ showed high grain yield and good agronomic traits in Lavras and Incofidentes.

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Section: Introductionsupporting

confidence: 69%

Productive performance of soybean cultivars grown in different plant densities

et al. 2017

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“…Important information on crop treatments for the arrowroot production includes the plant population, which aims to maintain or increase crop yield (Terra et al 2010) and may be adjusted by changing the spacing between rows and increasing plant density along the rows according to an ideal population, since intrinsic genotype traits and environmental conditions may interfere in the results (Ludwig et al 2011).…”

Section: Abstract Resumomentioning

confidence: 99%

Influence of plant density and hilling on yield and profitability of arrowroot1

Moreno

Torales

Heid

et al. 2017

Pesqui. Agropecu. Trop.

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The global production of arrowroot is minimal, and this may be partially associated to the lack of standardized agronomic techniques for its commercial cultivation. This study aimed to assess the yield and profitability of arrowroot plants (‘Comum’ cultivar) grown using different plant spacings in the cropping row (20 cm, 25 cm, 30 cm and 35 cm) and a varying number of hilling applications (0, 1 and 2). The treatments were arranged in a 4 x 3 factorial scheme, in a randomized experimental block design, with six replications. After harvesting, the fresh and dry matter yields of leaves, rhizomes and roots were determined. Production costs and gross and net incomes were also calculated. The highest yields for fresh leaves (8.75 t ha-1), rhizomes (32.92 t ha-1) and roots (8.45 t ha-1) were obtained with a plant spacing of 20 cm. No interaction between the factors, neither significant differences for the use or not of hilling, were observed on the analyzed variables. The costs per hectare ranged from BRL 8,488.83 (35 cm without hilling) to BRL 10,376.23 (20 cm with two hillings). The highest yields and gross and net incomes were obtained with the spacing of 20 cm between plants.

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“…In Brazil, many studies have been conducted to adjust the density of soybean plants in order to increase grain yield (Ludwig et al, 2011;Balbinot Júnior et al, 2015;Silva et al, 2015). However, there are few studies considering cultivars with indeterminate growth habit, development cycle shorter than 120 days and plants with low size and compact architecture -attributes increasingly desired in soybean genetic breeding programs (Souza et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

Soybean growth affected by seeding rate and mineral nitrogen

Werner

Balbinot

Ferreira

et al. 2016

Rev. bras. eng. agríc. ambient.

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A B S T R A C TThis study aimed to evaluate the effect of seeding rates and nitrogen (N) fertilization on plant growth in soybean cultivar with indeterminate growth habit. Two experiments were conducted in the 2013/14 and 2014/15 growing seasons, in a complete block design with split-plot scheme and six replicates. Four seeding rates (150, 300, 440 and 560 000 viable seeds ha -1 ) and two N doses (0 and 45 kg ha -1 ) were allocated in the plots and subplots, respectively. The cultivar NK7059 RR was used. The following traits were assessed: leaf, stem and total shoot dry matter, leaf/stem dry matter ratio, stem and leaf N content, SPAD index, plant height, first pod height, number of branches per plant and grain yield. Soybean growth is not affected by the interaction of plant density and mineral N fertilization. Higher seeding rates increase plant dry matter in the initial development stages and reduce leaf/ stem ratio and the number of branches per plant. The effects of N fertilization on soybean growth vary between growing seasons, but do not affect grain yield, even considering a wide range of seeding rates.Crescimento de plantas de soja influenciado pela densidade de semeadura e nitrogênio mineral R E S U M O Neste trabalho o objetivo foi avaliar o efeito de densidades de semeadura e adubação nitrogenada sobre o crescimento de plantas de soja em cultivar com tipo de crescimento indeterminado. Dois experimentos foram conduzidos nas safras 2013/14 e 2014/15 com delineamento de blocos casualizados em parcelas subdivididas e seis repetições. Nas parcelas foram alocadas quatro densidades de semeadura (150, 300, 440 e 560 mil sementes viáveis ha -1 ) e nas subparcelas dois níveis de nitrogênio (0 e 45 kg N ha -1 ). A cultivar de soja utilizada foi a NK7059 RR. Foram avaliados a massa seca de caules, folhas e total, relação folha/caule, o teor de nitrogênio nas folhas e no caule, índice SPAD, altura de plantas e da inserção da primeira vagem, número de ramos por planta e produtividade de grãos. O crescimento de plantas de soja não é afetado pela interação da densidade de semeadura e a adubação nitrogenada mineral. O aumento da densidade de semeadura incrementa a massa seca de plantas nas fases iniciais de desenvolvimento e reduz a relação folha/caule e o número de ramos por planta. O efeito da adubação nitrogenada no crescimento das plantas é variável entre as safras mas não aumenta a produtividade mesmo considerando ampla variação de densidade de semeadura.

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Populações de plantas na cultura da soja em cultivares convencionais e Roundup ReadyTM

Cited by 20 publications

References 12 publications

Productive performance of soybean cultivars grown in different plant densities

Productive performance of soybean cultivars grown in different plant densities

Influence of plant density and hilling on yield and profitability of arrowroot1

Soybean growth affected by seeding rate and mineral nitrogen

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