Effect of precision planting and seeding rates on canola plant density and seed yield in southern Alberta

Dhillon, Gurbir Singh; Baarda, Lewis; Gretzinger, Mike; Coles, Ken

doi:10.1139/cjps-2020-0186

Cited by 9 publications

(5 citation statements)

References 28 publications

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“…Відстань між насінинами вздовж лінії посіву головним чином визначає норму висіву. Для кожної культури в певних ґрунтово-кліматичних умовах норма висіву має раціональне значення, яке підтверджено багатьма науковцями-агрономами [8,9,10]. Нерівномірність відстані між насінинами призводить до неоднорідної норми висіву, що може зменшувати врожайність до 7 %.…”

Section: аналіз останніх досліджень та публікаційunclassified

Study of the Factors of the Deterioration of Sowing Accuracy With Pneumatic Seeders

Aliiev,

Bezverkhniy

2023

Engineering, Energy, Transport Aic

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The purpose of the research is to establish the factors of deterioration of sowing accuracy by pneumatic seeders (using the John Deere 90 Series precision seeding seeder as an example) as a result of observations of their operation during numerical modeling and field experimental studies. Observation of the operation of the sowing section of the pneumatic precision seed drill was carried out in two stages: numerical modeling and field experimental studies. Numerical simulation involved the use of the Simcenter STAR-CCM+ software package and created 3D models of the main elements of the seeding section of the John Deere 90 Series precision sowing machine. Field experimental studies were carried out on grain-steam crop rotation on the territory of AFG "Olvia". Peas were sown with a John Deere 90 Series planter. The row spacing was 0.19 m, the sowing depth was 0.05 m. The sowing rate was 1.2 million units/ha. As a result of the numerical simulation of the operation of the seeding section of the precision seeding pneumatic seeder, a visualization of the distribution of soil aggregates and their velocities was obtained. Comparing the obtained values of the indicators with the normalized ones, it was established that the distribution of seeds along the x-axis meets the specified requirements. Along the seeding depth (z-axis), the distribution of seeds is quite high, which exceeds the normalized values. Thus, the obtained average value of sowing depth is 0.041 ± 0.03 m, and the normalized value is 0.05 ± 0.01. Visual analysis shows that some seeds do not even fall into the seed layer (0.04–0.08 m) of the arable horizon. A smaller value of the distance between seeds (< 0.029 m) explains the occurrence of "twins", and a larger value (> 0.059 m) - the occurrence of "skips". As a result of field experimental studies of the seeding section of the precision seeding pneumatic seeder, photographs were taken of the moment the seeds fly out of the seedbed for various designs of the seed pacifier using an action camera. After receiving seedlings of sown pea seeds, the distances between plants were determined and the corresponding statistical indicators were calculated: minimum value - 0.005 m, maximum value - 0.124 m, limit - 0.0595 m, root mean square deviation - 0.031 m, average value 0.045 m, coefficient of variation - 0.688 . Comparing the obtained experimental data with the results of numerical simulation, there is a sufficiently high agreement of the data (94%), which confirms the numerical model developed in the Simcenter STAR-CCM+ software package. As a result of observations of the operation of the seeding section of the John Deere 90 Series pneumatic seeder in the course of numerical modeling and field experimental studies, the factors of deterioration of seeding accuracy were established (high speed of the air flow and, accordingly, seeds, imperfect shape of the seed channel of the sowing shoe, imperfect shape of the seed stabilizer). Increasing the efficiency of the process of sowing seeds of cultivated plants can be achieved by improving the designs of the elements of the seed supply system of the pneumatic seeder (seed retarder, seed channel of the sowing shoe, seed pacifier) with justified structural and technological parameters that ensure accurate sowing, and structural materials that provide an increased resource their exploitation.

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Section: аналіз останніх досліджень та публікаційunclassified

Study of the Factors of the Deterioration of Sowing Accuracy With Pneumatic Seeders

Aliiev,

Bezverkhniy

2023

Engineering, Energy, Transport Aic

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“…Seeding operation is one of the most important components in the large-scale field agricultural production process, which directly affects the germination of seeds and the emergence and growth of crops (Dhillon et al, 2022). Therefore, the high quality of mechanized seeding operations is an important basis for ensuring food security and promoting agricultural harvest under the condition of limited cultivated land resources.…”

Section: Introductionmentioning

confidence: 99%

Design and Optimization Test of High-Speed Seed Guide Device With Conical Spiral Airflow

Zhang,

Zhu,

Wang

et al. 2024

Eng. Agríc.

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During high-speed seeding operations, collisions between seeds and seed guide tubes are very significant, resulting in poor seed spacing uniformity. To solve this problem, a highspeed seed guide device with conical spiral airflow was designed, which can use highspeed positive pressure airflow to move seeds smoothly. To improve the uniformity of the airflow field in the device, a single-factor test was carried out to determine the reasonable range of each factor. Then, the four-factor and five-level central composite test was carried out. The four main factors were screw pitch, cone angle, width of gap, and angle of air-tube, and the evaluation index was the mean variance of airflow velocity. The test results showed that the optimal parameters of the high-speed seed guide device with conical spiral airflow were a screw pitch of 24.98 mm, cone angle of 7.47/55, width of gap of 5.31 mm, and angle of air-tube of 25.09°. The verification test showed that the relative error between the verification test value and the predicted value was less than 5%, indicating that the model had high reliability. This research can provide references for the research of highspeed seed guide technology and the innovative design of seed guide devices.

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“…This system obtains the real-time operating speed of the planter using speed-measuring radar/GPS and adjusts the speed of the planter accordingly. Through controlling the amount of sowing, the uniformity of sowing is improved, changes in row spacing and plant spacing are reduced, and accurate positioning and sowing is achieved [9,10]. Additionally, the Exact Emerge series of air-suction seed extractors from the John Deere Company in the US has improved the traditional disc-shaped seed tray structure to increase the seed-filling power of the seeds and adapt to the high-speed seed discharge requirements during the sowing operation.…”

Section: Introductionmentioning

confidence: 99%

Design and Analysis of a High-Precision Dynamic Compensation System for Seed Dropping Position in Corn Sowing Operations

et al. 2023

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In response to the problem of imprecise maintenance of plant spacing and row spacing during corn sowing operations in the middle of existing corn farms, this study designed a dynamic compensation system for corn seed dropping position. The test system includes a corn seeding machine operating unit, a seed dropping variable measurement and control system unit, a terminal control system, and a dynamic compensation system. The dynamic performance of the control system was tested experimentally. When undisturbed signals were loaded, regardless of whether the machine used the position compensation function or not, the coefficient of variation of longitudinal grain spacing was 2.6% ± 0.2%, and the longitudinal grain spacing was basically consistent. After adding disturbance signals, compared with not using the dynamic compensation function, the variation coefficient of seed spacing decreased by an average of 6.94% when using the dynamic compensation function. When using the dynamic compensation function, compared with not using dynamic compensation function, the variation coefficient of lateral grain spacing decreased by an average of 9.16%. Stability analysis of longitudinal and lateral grain spacing was conducted through bench tests, verifying the stability of the proposed dynamic compensation system for seed dropping position.

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Effect of precision planting and seeding rates on canola plant density and seed yield in southern Alberta

Cited by 9 publications

References 28 publications

Study of the Factors of the Deterioration of Sowing Accuracy With Pneumatic Seeders

Study of the Factors of the Deterioration of Sowing Accuracy With Pneumatic Seeders

Design and Optimization Test of High-Speed Seed Guide Device With Conical Spiral Airflow

Design and Analysis of a High-Precision Dynamic Compensation System for Seed Dropping Position in Corn Sowing Operations

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