There are many factors like soil texture, soil temperature, microbiology action....etc
Weed seeds are specific to their physiology. Some seeds sprout rapidly, and some may stay dormant for years to their specific ideal conditions. Some are serotinous and sprout after fire. Some need rain and a certain soil temperature. Some seeds need frost or other scarification to break their seed coat. Seeds May be moved by wind, gravity, water, animals, equipment in soil disturbance, etc. The plants or trees produce the seeds, and bees, bats, hummingbirds, insects, etc. help pollenize. Some seeds are very persistent until ideal conditions. Other seeds sprout relatively quickly when soil temperatures and moisture are adequate. Wetland seeds may sprout to Specific wet, dry or moist conditions, but survive in the periodic anaerobic conditions common to wetlands. Species are often referred to as weeds when they are invasive and persistent, and often also likely non-native, lacking normal biological or other controls that keep them in check.
Dear Dr Dheyaa Aljuburi. See the following useful link:
CITE: Yang, X., Baskin, C.C., Baskin, J.M. et al. Global patterns of potential future plant diversity hidden in soil seed banks. Nat Commun 12, 7023 (2021). https://doi.org/10.1038/s41467-021-27379-1
There are several factors, including the ability of the plant to production seeds, the amount of seeds entering the field, the death, decay and dormancy of seeds, and other factors.
Please see this.
https://orgprints.org/id/eprint/32504/1/Kuht%20et%20al%202016.pdf
Please check it.
https://www.hindawi.com/journals/isrn/2012/461245/
The amount of weed seeds present in the ground depends on many factors, the most important of which is the type of weed spread and its intensity, in addition to the environmental conditions of the area and other factors.
There are several factors. Nature of seeds (recalcitrants or orthodox), factors exposed to such as water availability, quality of media, level of exposure to intense sunlight and so on
The number of bush seeds in the soil increases when the bush is left without control for several years or when the control is carried out at an inappropriate time and incorrectly.
guess you mean the positive influences reduce the seed population. So many factors can interfere with the weed seed bank such as:
Deep plowing, using herbicides before the plant flowers set, hand hoeing, the density of crops seedlings (competition), grazing, soil type, irrigation, and other cultural practices.....
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