Long-term and seasonal dynamics of the seed bank in arable soil
1994
Holub, M. (Vyskumny Ustav Zemedelske Ekonomiky, Prague (Czech Republic))
Short term and long term changes in the number of seeds and their species composition were studied in arable soils under an 8 year crop rotation. The following main conclusions were deduced: The number of seeds in soil showed seasonal dynamics. Maximal numbers were found in the 3rd and 4th quarters of the year and minimal numbers were found in the 2nd quarter. The maximal seasonal changes were in the active upper zone of the soil. The changes in the seed content of the soil differed in individual soil layers. There was minimal influence of crop rotation on the species composition of seeds of main species. The results confirm the general trends: seeds of 1-3 species have dominant roles in soil. The main part of a soil seed bank was created by a limited number of species whereas minimal number of seeds were in subsoil.
اظهر المزيد [+] اقل [-]الكلمات المفتاحية الخاصة بالمكنز الزراعي (أجروفوك)
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