Field scale row unit vibration affecting planting quality

Abstract

With recent developments allowing increased planter speeds, improving spatial uniformity of crop emergence will continue to be an important focus of research. Vertical vibration during planting usually interferes with the seed metering and delivery process, and thereby affects seeding quality. Two different row crop planters were instrumented with accelerometers to monitor vertical vibration of planter row units in five fields with a total area of 220 ha in both no-till and strip-tilled conditions. The test results showed that the row unit vibration linearly increased with planting speeds. The R 2 of each fitting equation was more than 0.90. The main frequencies of the vibration were concentrated in a low-frequency band of 3 Hz to 10 Hz. These frequencies did not show an increasing trend with the planter speed. However, the amplitude clearly increased when the planter speed increased. For the John Deere MaxEmerge™ 5 planter, the manually measured average plant spacing was close to the target plant spacing with a maximum error of 21 mm, and a max coefficient of variation (CV) of 24.3%; the standard deviation (SD) increased with travel speed and row unit vibration. For the John Deere ExactEmerge™ planter, the plant spacing was closer to the target plant spacing with a maximum error of only 5 mm and a max CV of 14.3%; the SD remained almost constant, at lower values than that of the MaxEmerge™ 5, at different speeds. For both planters, overall, the row unit vibration increased planting spatial variability. The quality of feed index decreased with increased vertical acceleration on the row unit while the miss index increased. However, the multiples index was generally unaffected by row unit vibration.

Seed-Filling Characteristics of a Centralized Seed-Metering Device for Rapeseed Caused by Vibration

“…Many academics have embraced this strategy since it can faithfully and correctly simulate the research process [35]. The results of the simulation test demonstrate that vibration will weaken the seeding performance (seeding uniformity), which is in line with the findings of Kuş [29] and Zhai [30] et al Vibration also alters the seed layer height, which has a significant effect on seed-sowing quality [36][37][38][39].…”

“…They found that the seed falling trajectory and seed falling point were gradually dispersed, and the seed-dropping range expanded with an increase in vibration. Kuş and Zhai et al reported that vibration and amplitude were correlated with forward speed, and the vibrations increased the variability of planting [29,30]. To decrease the influence of vibration on seeding performance, Wang et al used a combination of a suction drum and a vibrating seed plate to manage seed suction [31].…”

Influence of physical properties of sugar beet seeds on the work quality of the seeding mechanism

“…The results published by other authors (Zhai et al, 2020;Yazgi, 2007;Turan et al, 2014;Kowalczuk et al, 2017) show that seed damage is mainly affected by the dimensional and strength properties of the seed and the chosen type of planting mechanism. In view of the above, it was decided to compare the two most widely used types of planting mechanisms used on sugar beet planters, namely the mechanical planting mechanism with internal filling and the pneumatic vacuum type.…”

Precision Fertilization and Irrigation: Progress and Applications

“…A regional grid map with the characteristics of crop disease, insect, and grass is formed by information technology. During operation, plant protection machinery combined with GPS technology performs variable spray operation on crops at different coordinate positions [111][112][113][114][115].…”