Version 1
: Received: 25 January 2021 / Approved: 26 January 2021 / Online: 26 January 2021 (11:35:27 CET)
How to cite:
Hossain, M.; Begum, M.; Hashem, A.; Rahman, M.; Bell, R. Continuous Practice of Conservation Agriculture for 3-5 Years Reduces Soil Weed Seedbanks Size in Intensive Rice-Based Cropping Patterns. Preprints2021, 2021010535. https://doi.org/10.20944/preprints202101.0535.v1
Hossain, M.; Begum, M.; Hashem, A.; Rahman, M.; Bell, R. Continuous Practice of Conservation Agriculture for 3-5 Years Reduces Soil Weed Seedbanks Size in Intensive Rice-Based Cropping Patterns. Preprints 2021, 2021010535. https://doi.org/10.20944/preprints202101.0535.v1
Hossain, M.; Begum, M.; Hashem, A.; Rahman, M.; Bell, R. Continuous Practice of Conservation Agriculture for 3-5 Years Reduces Soil Weed Seedbanks Size in Intensive Rice-Based Cropping Patterns. Preprints2021, 2021010535. https://doi.org/10.20944/preprints202101.0535.v1
APA Style
Hossain, M., Begum, M., Hashem, A., Rahman, M., & Bell, R. (2021). Continuous Practice of Conservation Agriculture for 3-5 Years Reduces Soil Weed Seedbanks Size in Intensive Rice-Based Cropping Patterns. Preprints. https://doi.org/10.20944/preprints202101.0535.v1
Chicago/Turabian Style
Hossain, M., Moshiur Rahman and Richard Bell. 2021 "Continuous Practice of Conservation Agriculture for 3-5 Years Reduces Soil Weed Seedbanks Size in Intensive Rice-Based Cropping Patterns" Preprints. https://doi.org/10.20944/preprints202101.0535.v1
Abstract
When farmers first shift from conventional tillage (CT) to conservation agriculture (CA) practice the control of weeds may be more difficult due to the absence of tillage. However, in the longer term (3-5 years), CA changes to weed dynamics may alter the weed seedbank. The nature of weed seedbank changes over time in intensively cropped rice-based rotations, that are typical of the Eastern Gangetic Plain, are not well understood. Three long term CA experiments were sampled (at Rajbari after 3 years and Rajshahi after 5 years) for effects of decreased soil disturbance strip planting (SP) and bed planting (BP) at both sites and Zero tillage (ZT) at Rajbari, increased retention of standing residues of previous crops (20 vs 50 %). The weed seedbank in 0-15 cm soil was quantified by assessing emergence from trays a net-house experiment during January-December 2016. The year-round count of emerged weeds revealed the fewest number of weed species (especially broadleaf weeds) and lowest weed density in SP followed by CT, BP, and ZT with 50% crop residues. The SP, BP, and ZT produced a higher number of perennials weeds than annual weeds, which was the opposite of CT. The continuous practice of SP and increased crop residue retention for 3 or more years decreased the size of weed seedbank but increased the relative proliferation of perennial weeds compared to CT. Weed seedbank size in SP was even smaller than BP and ZT.
Biology and Life Sciences, Agricultural Science and Agronomy
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
