Seed Dispersal


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Seed Dispersal

 

the expulsion by wind of the upper layer of soil with sown seeds and occasionally even with sprouts; observed in the presence of strong dry winds, so-called dust or black storms, particularly markedly on pulverized, structureless soil.

In seed dispersal, some of the seeds might remain in the soil, but they shift or are pushed into clumps, causing either complete destruction of the planting or uneven distribution of the sprouts. The root system of developing sprouts becomes exposed, and the plant dies. Seed dispersal most often takes place in spring in fields that had lain fallow the previous year and had been seeded with spring crops and in fall on winter sprouts planted on fallow land. Most often seed dispersal is seen in steppe regions. In the USSR it takes place in western Siberia, northern Kazakhstan, Bashkiriia, Stavropol’ Krai, and Krasnodar Krai.

Methods of fighting seed dispersal include planting tree belts and using proper crop rotation and proper systems of soil cultivation and irrigation. The All-Union Scientific Research Institute of Grain Farming in Steppe Regions has worked out methods of cultivating the soil without mold-boards, in which up to 90 percent of the stubble stays on the soil surface, safely guarding the soil from wind erosion.

References in periodicals archive ?
Seed dispersal is a key component in the understanding of any ecosystem, Levi said.
Higher temperatures accelerate seed dispersal in crop species belonging to the cabbage and mustard plant family, limiting reproductive success, and this effect is mediated by the INDEHISCENT gene, according to a new study.
Dung beetles perform many crucial roles in the ecosystem, from soil enrichment and nutrient cycling to seed dispersal and fly control.
They learned about seed dispersal through the story The Tiny Seed and then planted their own seeds and sold flowers in the garden centre role play area.
Of those two processes, only seed dispersal has the ability to colonize new habitats, escape predation and competition, persist over potentially long periods, or regenerate populations following disturbances, droughts or killing frosts.
Similarly, the loss of smaller mammals would impact crucial ecological functions like seed dispersal, pollination, and insect control.
I recorded the flowering times and seed dispersal times documented on approximately 3500 herbarium specimens collected from across the 2.
Seed dispersal in this species depends on rodents to dismantle fruits and extract the seeds which they disperse tens of meters from the source.
The ability of fleshy-fruited plants for dispersal though the matrix relies on their capacity to interact with those frugivore species that move across its habitats providing key seed dispersal services.
However, human activities such as seeds extraction and hunting animal dispersers, can limit the seed dispersal process dynamics by breaking this interaction between the plant and animal dispersers with diverse consequences for both (Forget & Jansen, 2007; Muler et al.
There is concern that avian species may continue to facilitate its spread through seed dispersal (Conway et al.