Medida de regularidade do espaçamento de plantas de milho em diferentes                sistemas de manejo

Storck, Lindolfo; Modolo, Alcir José; Brum, Betânia; Trogello, Emerson; Franchin, Márcia Fernanda; Adami, Paulo Fernando

doi:10.1590/1807-1929/agriambi.v19n1p39-44

Cited by 5 publications

(4 citation statements)

References 14 publications

(16 reference statements)

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“…The appropriate population and uniformity of longitudinal distribution of maize plants in the row is important when aiming at high yield (Storck et al, 2015).…”

Section: Discussionmentioning

confidence: 99%

Maize Sowing Speeds and Seed-Metering Mechanisms

Ormond¹,

Furlani²,

Oliveira³

et al. 2018

JAS

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The intensifying use of machines in agriculture to increase operational capacity requires investments in more powerful and automated machines capable of working at higher speeds to meet the demands of agricultural activities. The objective of this study was to evaluate the sowing quality of a second crop maize using a pneumatic sowing machine equipped with two seed-metering devices at different displacement speeds. The statistical design was a randomized block design arranged in 6 × 2 factorial, with 4 replications, totaling 48 experimental plots. Where it was tested two seed-metering mechanisms from different manufacturers denominated A and B, and 6 displacement speeds of approximately 2.0; 4.7; 6.5; 9.1; 10.3 and 12.3 km h -1. The seed-metering mechanisms were compared by mean test while displacement speeds were compared by regression plots. The initial and final plant populations, seed depth, seedling longitudinal distribution (normal, faulty and double spacing) and grain yield were also evaluated. Displacement speed and seed-metering devices showed significant interaction only for the percentages of normal, faulty, and double spacings. The initial and final population presented an isolated effect for both the seed-metering devices and velocities. The seed depth showed an isolated velocity effect. The grain yield showed a significant isolated effect from the analyzed seed-metering devices. The seed-metering device B operating at lower speeds had better performance in the sowing process.

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“…The appropriate population and uniformity of longitudinal distribution of maize plants in the row is important when aiming at high yield (Storck et al, 2015).…”

Section: Discussionmentioning

confidence: 99%

Maize Sowing Speeds and Seed-Metering Mechanisms

Ormond¹,

Furlani²,

Oliveira³

et al. 2018

JAS

View full text Add to dashboard Cite

show abstract

“…When investigating different seed distribution mechanisms with different technical, operational, and environmental conditions, it is assumed that average distance between plants is important; however, the average distance is not sufficient to assess the quality of sowing. The quantification and understanding of the occurrence of failed and duplicate plants in the sowing furrow is also imperative (Storck et al, 2015). This highlights the importance of the application of other tests, such as the evaluation of the process.…”

Section: Introductionmentioning

confidence: 99%

December 2019

2019

Aust J Crop Sci

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An appropriate sowing process is one of the steps that need immediate attention in crop sciences, because it may compromise the profitability of crops. An effective sowing process requires correctly spaced seedlings with the right depth in order to obtain an appropriate and uniform stand. In this context, statistical control is an option that allows evaluation of the agricultural process. Our objective in this study was to evaluate the quality of maize sowing as a function of planting density and working speeds. The statistical design used was based on the methodology of statistical quality control, corresponding to 4 seed dispensers from different manufacturers denoted DA, DB, DC, and DD with two speeds for each (V1 = 7.0 km h-1 and V2 = 11.5 km h-1). Data were collected from 10 replicates for each of the 4 seed dispensers, totaling 40 samples, at each working speed. The following parameters were evaluated: Sowing depth, longitudinal distribution of seedlings, initial and final plant population, and corn grain yield for the hybrid 30F35YH variety. The statistical process control offers an interesting and reliable mean of evaluating the quality of the sowing process. The seed dispenser, DC, exhibited a better quality of sowing as compared to others. The highest percentage of normal spacing was observed at the lower displacement speed for the seed dispensers, DB, DC, and DD. These seed dispensers also showed higher productivity as compared to other seed dispensers.

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“…Corn plants need adequate conditions of solar radiation interception, which is a direct function of population density and plant distribution in the area (Storck et al, 2015). Corn intercropped with legumes generates an advantage because its physiology is more efficient in carbon sequestration and dry matter accumulation at high temperatures, with a beneficial effect in subsequent years in the same intercropping area (Paz et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

Soil Attributes and Initial Corn Development as a Function of Fertilization and Intercropping Systems

et al. 2019

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Fertilization systems that allow higher sowing speeds have been used in areas of grain production, as well as the use of intercropping to improve soil physical quality and provide better soil cover. This study aimed to evaluate soil attributes and the initial corn development and intercropping (corn + velvet bean, corn + pigeonpea, and corn + bonavist bean) as a function of fertilization systems (pre-sowing and sowing). The experiment was conducted in an Oxisol in a randomized block design in the 2 × 3 factorial scheme, with four replications. The number of days for emergence, plant stand, intercropping dry matter, soil straw cover, soil straw permanence index, penetration resistance, soil moisture, soil density, degree of compaction, and total soil porosity were measured. The percentage of soil straw cover was affected by fertilization system, mainly by pre-sowing fertilization. Soil physical attributes were not affected by fertilization and intercropping systems, except total porosity, in the 0-0.10 m layer, which has a combined effect of factors. The initial corn development was not affected by fertilization and intercropping systems. Velvet bean presented the highest number of days for the emergence and lower dry matter.

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Medida de regularidade do espaçamento de plantas de milho em diferentes sistemas de manejo

Cited by 5 publications

References 14 publications

Maize Sowing Speeds and Seed-Metering Mechanisms

Maize Sowing Speeds and Seed-Metering Mechanisms

December 2019

Soil Attributes and Initial Corn Development as a Function of Fertilization and Intercropping Systems

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