Utjecaj sustava sjetve na prinos zrna kukuruza različitih FAO grupa

Banaj, Anamarija; Banaj, Đuro; Tadić, Vjekoslav; Petrović, Davor; Stipešević, Bojan

doi:10.18047/poljo.25.2.9

Cited by 2 publications

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“…The uniformity of the depth of the wheat seed was also treated quite analogously. Also, some authors have researched the impact of the sowing system on number of plants per ha and achieved yield [3,4].…”

Section: Introductionmentioning

confidence: 99%

Partial Differential Equations for Cereal Seeds Distribution

Tomantschger

Tadić

2021

Teh. vjesn.

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During the recent years all crop species achieved the best possible field distribution so a high yield is to be expected. In this paper the solutions of two different diffusion equations are determined, which describe the optimal distribution of cereal grains over a field. Therefore, there are two different partial differential equations of cereal seed distribution-distinction is made between the longitudinal spacing (seeds in a row), and transverse distance (between two rows), as well as the sowing depth. In particular, closed forms of solutions are derived in each case. Although the result of the diffusion equation with respect to the distribution of the lateral seed distance of two adjacent rows is already known, a new solving method is presented in this paper. By this method, the partial differential equation is reduced to an ordinary one, which is easier to solve. In this paper it is shown that the distribution of lateral resp. longitudinal and in-depth wheat seed distances is achieved by a normal Gauss function resp. a log-normal function. Furthermore, it is demonstrated that the fitting functions of the best experimental results of wheat seeding distributions are particular solutions of the individual differential equations. Normal Gauss function describes lateral distribution with R 2 = 0.9325; RSME = 1.2450, and log-normal function describes longitudinal distribution with R 2 = 0.9380; RSME = 1.4696 as well as depth distribution with R 2 = 0.9225; RSME = 2.0187.

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Section: Introductionmentioning

confidence: 99%

Partial Differential Equations for Cereal Seeds Distribution

Tomantschger

Tadić

2021

Teh. vjesn.

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Seeding Pattern Impact at Crop Density Establishment and Grain Yield of Maize

Banaj

Stipešević

et al. 2023

Crops

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Maize is the most represented grain crop on the world’s arable land. It is mostly grown using standard sowing at an inter-row distance of 70 cm. However, growing in two rows (double-row sowing) is increasingly common today. The aim of this research was to determine the influence of different spatial distributions of the same population of maize plants on the yield of maize grains in a larger range of the FAO maize hybrid maturing group. The experiment lasted 5 years and was set up at two locations in Jakšić (Požeško-Slavonia County) and Lužani (Brodsko-Posavina County). Maize sowing with standard sowing was carried out with a PSK OLT seed drill with an inter-row spacing of 70 cm, while double-row sowing was carried out with a MaterMacc Twin Row-2 seed drill in two rows spaced 22 cm apart in a zigzag arrangement and 48 cm apart between adjacent sowing furrows. In the experiment, a total of three types of maize hybrids were used: H1-Kashmir (FAO 390 maturing group), H2-Kapitolis (FAO 400 maturing group) and H3-Konfites (FAO 450 maturing group). With standard maize sowing, an average set of plants was achieved: 71,946 plants ha−1 (Kashmir), 71,714 plants ha−1 (Kapitolis) and 72,205 plants ha−1 (Konfites), while the double-row sowing achieved a set of plants of 72,166 plants ha−1, 72,104 plants ha−1 and 72,576 plants ha−1. The two-row sowing of the hybrid Kapitolis and Konfites recorded a statistically significant higher set of maize plants. The yield of maize grains in all three types of the hybrid was statistically and significantly higher by 943 kg ha−1 using two-row sowing, and the highest yield was achieved by the Kashmir hybrid (13,406 kg ha−1).

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Utjecaj sustava sjetve na prinos zrna kukuruza različitih FAO grupa

Cited by 2 publications

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Partial Differential Equations for Cereal Seeds Distribution

Partial Differential Equations for Cereal Seeds Distribution

Seeding Pattern Impact at Crop Density Establishment and Grain Yield of Maize

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