Effects of the physicochemical properties of pellets on the germination of pelleted sugar beet seeds

Podlaski, S.; Wzorek, H.; Chomontowski, C.

doi:10.31545/intagr/109239

Cited by 5 publications

(3 citation statements)

References 10 publications

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“…The pellet properties can affect the respiration rate under excess water conditions in filter paper. The differences in the swelling ability of a pellet are caused by the use of materials of different types and qualities for pelleting [38]. The high water absorbency of the materials used in the pellet causes the pellet to swell, which pushes seeds to the surface and produces small voids or conduits for the emerging seedlings to follow [34].…”

Section: Discussionmentioning

confidence: 99%

Pelleting of Physical Dormancy Small-Seeded Species in Astragalus sikokianus Nakai

et al. 2023

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Astragalus sikokianus is a rare Japanese perennial of the seashore that was reported to be extinct in the wild. The small seed size and deep dormancy of A. sikokianus make it difficult for direct seeding restoration in aspects of seed handling, transport, planting, and seedling establishment. For the large-scale economic restoration of dormant small-seeded species, seed pelleting combined with the breaking of dormancy was studied. Physiological (prechilling and plant hormones) and physical (hot water, hydrochloric acid, and sulfuric acid) seed dormancy break treatments were evaluated. The dormant broken seeds were used for pelleting. The effects of the substrate, pellet sizes, and their interactions on germination were measured. The scarification of five rubs of seeds placed between sandpapers completely broke the physical dormancy of A. sikokianus. Seed coat impermeability inhibited germination. Pelleted seeds ranging from 2.0 to 4.0 mm in diameter showed more than 90% germination on filter paper. The germination of the pelleted seeds was measured in commercial, field, and sand soil conditions. The highest germination was shown in sand (70–74% GP), regardless of the pellet size, whereas unpelleted scarified seeds germinated only 48%. These results suggest that small-seeded species with physical dormancy can be used for seed-based restoration after seed pelleting.

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Section: Discussionmentioning

confidence: 99%

Pelleting of Physical Dormancy Small-Seeded Species in Astragalus sikokianus Nakai

et al. 2023

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“…The low water potential of the pericarp causes a reduction in the flow of water to the seed, creating a kind of barrier. The water potential of seeds just before the emergence of the germinal root is approximately − 1.0 MPa [4,27], therefore any environmental factor or seed property that delays the achievement of such a water potential level prolongs the germination process [29].…”

Section: Introductionmentioning

confidence: 99%

Impact of sugar beet seed priming using the SMP method on the properties of the pericarp

Chomontowski

Podlaski

2020

BMC Plant Biol

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Background: This study determined the effects of two solid matrix priming methods on changes in the characteristics of two lots of the same variety of sugar beet fruits that differ in the level of vigour. Results: Seed treatment within each level of vigour did not significantly affect helium and apparent density, total pore volume and total porosity. However, there was a tendency to increase porosity due to priming. This is probably why seed priming significantly increased mesopore diameter in both high and low vigour seeds. These changes increased the water content in the pericarp and the seeds and increased the water potential during germination. The high level of electrical conductivity of the fruit extracts was associated with low seed vigour. Low vigour resulted in higher humidity of the pericarp and decreased seed moisture and was also associated with lower water potential of the pericarp and seeds. Conclusions: A significant difference in the water content in the pericarp and seeds was indicative of imbibition and problems with water flow between these centres, which resulted in a low water diffusion coefficient of the pericarp. This low water diffusion coefficient was correlated with the prolongation of the seed germination time.

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“…The absorption mechanism of bedding or fluid-treated pellets by the entire volume of particles dominates and whose intensity is time, is defined as the diffusion coefficient. Moisture diffusion in the material structure depends on the type of the material, volume of micro gaps among particles, and volume of particles or pellets, fibre fraction volumes, the speed of the mass stream, time, additives, moisture, relative humidity, and air temperature [ 6 , 7 ]. Smaller particles and higher temperature increase the speed of absorption.…”

Section: Introductionmentioning

confidence: 99%

Characterisation of Wheat Straw Pellets Individually and in Combination with Cassava Starch or Calcium Carbonate under Various Compaction Conditions: Determination of Pellet Strength and Water Absorption Capacity

2020

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This study aimed to optimise the production conditions of wheat straw (WS) pellets and pellets with the additives of cassava starch (CS) or calcium carbonate (CC) based on the criteria of pellet strength and water absorption by crushed pellets. The pellets produced using a 2–10%-wt/wt additive ratio, material moisture of 10–30% w.b., die height of 66–86 mm, and material temperature of 78–108 °C were tested. The influence these factors on the strength parameters of pellets was different than on the water absorption by the crushed pellets. The pellets made of WS blended with CC additive were characterised by better strength parameters and the compressed pellets were characterised by better water absorption than those with CS. High and positive correlation among specific pellet compression work, elasticity modulus for pellet compression, and tensile strength values were observed. As the strength parameters of pellets showed high correlation with single pellet density, for the consistency of conclusions, the optimal conditions for pellet production were assumed based on the density. For optimal conditions at 4% wt/wt additive ratio, 23% w.b. material moisture, 78 mm die height, and 80 °C material temperature, the specific pellet compression work was 3.22 mJ·mm−2, elasticity modulus was 5.78 MPa, and maximum tensile strength of the pellets was 2.68 MPa; moreover, the water absorption by crushed pellets amounted to 2.60 g H2O·g−1 of dry matter.

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Effects of the physicochemical properties of pellets on the germination of pelleted sugar beet seeds

Cited by 5 publications

References 10 publications

Pelleting of Physical Dormancy Small-Seeded Species in Astragalus sikokianus Nakai

Pelleting of Physical Dormancy Small-Seeded Species in Astragalus sikokianus Nakai

Impact of sugar beet seed priming using the SMP method on the properties of the pericarp

Characterisation of Wheat Straw Pellets Individually and in Combination with Cassava Starch or Calcium Carbonate under Various Compaction Conditions: Determination of Pellet Strength and Water Absorption Capacity

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