scholarly journals Changes in Weed Seed Density in Soil of Paddy Fields under Successive Herbicide Applications.

1995 ◽  
Vol 40 (1) ◽  
pp. 8-13 ◽  
Author(s):  
Ryuichi Sago ◽  
Masakazu Komatsuzaki
Keyword(s):  
Paddy Fields ◽  
Seed Density ◽  
Weed Seed

scholarly journals Critical weed-seed density to prevent yield loss of rice grown on paddy fields dominated by annual weeds.

2001 ◽  
Vol 46 (4) ◽  
pp. 267-272 ◽  
Author(s):  
Ryuichi Sago ◽  
Hirokazu Takahashi ◽  
Shigeru Takayanagi
Keyword(s):  
Yield Loss ◽  
Paddy Fields ◽  
Seed Density ◽  
Weed Seed ◽  
Annual Weeds

Long‐term impact of legume‐based cropping with chemical and integrated fertilisation on viable weed seed density, diversity and community structure

Weed Research ◽  
2021 ◽  
Author(s):  
Chaitanya P. Nath ◽  
Kali K. Hazra ◽  
Chandra S. Praharaj ◽  
Ummed Singh ◽  
Sati S. Singh ◽  
...  
Keyword(s):  
Community Structure ◽  
Seed Density ◽  
Weed Seed ◽  
Long Term Impact

scholarly journals Quantifying the ecosystem service of non-native weed seed predation provided by invertebrates and vertebrates in upland wheat fields converted from paddy fields

2011 ◽  
Vol 140 (1-2) ◽  
pp. 191-198 ◽  
Author(s):  
Minoru Ichihara ◽  
Keisuke Maruyama ◽  
Masayuki Yamashita ◽  
Hitoshi Sawada ◽  
Hidehiro Inagaki ◽  
...  
Keyword(s):  
Seed Predation ◽  
Ecosystem Service ◽  
Paddy Fields ◽  
Weed Seed

scholarly journals Changes in Weed Seed Densities in Soil of Paddy Fields under Different Weed Managements

1998 ◽  
Vol 42 (4) ◽  
pp. 391-395
Author(s):  
Ryuichi Sago ◽  
Teruo Matsuda
Keyword(s):  
Paddy Fields ◽  
Weed Seed

Influence of seed density and aggregation on post-dispersal weed seed predation in cereal fields

2005 ◽  
Vol 106 (1) ◽  
pp. 17-25 ◽  
Author(s):  
Paul C. Marino ◽  
P.R. Westerman ◽  
C. Pinkert ◽  
W. van der Werf
Keyword(s):  
Seed Predation ◽  
Seed Density ◽  
Weed Seed ◽  
Cereal Fields

Ecophysiological study on weed seed banks and weeds in Cambodian paddy fields with contrasting water availability

2010 ◽  
Vol 10 (4) ◽  
pp. 261-272 ◽  
Author(s):  
AKIHIKO KAMOSHITA ◽  
HIROYUKI IKEDA ◽  
JUNKO YAMAGISHI ◽  
MAKARA OUK
Keyword(s):  
Water Availability ◽  
Seed Banks ◽  
Paddy Fields ◽  
Weed Seed

scholarly journals Effects of Reduced and Conventional Tillage on Weed Communities: Results of a Long-Term Experiment in Southwestern Spain

2019 ◽  
Vol 37 ◽  
Author(s):  
G. PARDO ◽  
A. CIRUJEDA ◽  
F. PEREA ◽  
A.M.C. VERDÚ ◽  
M.T. MAS ◽  
...  
Keyword(s):  
Diversity Index ◽  
Conventional Tillage ◽  
Seed Density ◽  
Weed Seed ◽  
Term Experiment ◽  
Weed Communities ◽  
Weed Diversity ◽  
Long Term Experiment ◽  
Seed Distribution

ABSTRACT: An important drawback in adopting minimum tillage (MT) and no-tillage (NT) techniques is the frequently observed weed shift promoting adapted species and achieving poorer weed control. These changes can be detected best with long-term experiments, and results might differ depending on soil characteristics and the local flora. The objectives of this work were to evaluate the effect of reduced tillage on weed seed distribution in the soil profile and to identify possible consequences on weed diversity on a long-term experiment maintained during 24 years in Seville (Spain) with three tillage systems: NT, MT and conventional tillage (CT) including moldboard plow on a vertisol. For this purpose, soil seedbanks at 0-8 cm and 8-16 cm depths were enumerated in autumn 2005 and in-field emerged plants in autumn 2005 and winter 2006. Shannon diversity index (H) and evenness (J’) were calculated for seedbank and aboveground weed communities. Total weed seed density was highest for NT and lowest for CT. Some big-seeded species, such as Chrozophora tinctorea L., showed highest seed density in CT. NT increased the relative density of Amaranthus blitoides S. Watson seeds in the seedbank and the abundance of emerged plants of Malva parviflora L., Anagallis arvensis L. and Picris echioides L. Overall, MT led to a less diverse seedbank in the 0-8 cm depth of soil than CT. The frequent drought-induced deep fractures in the expandable clay soil caused natural tillage, which probably resulted in fewer differences in weed seed and seedling densities among tillage treatments compared to what might be expected in other soil types.

scholarly journals Viable weed seed density and diversity in soil and crop productivity under conservation agriculture practices in rice-based cropping systems

2020 ◽  
Vol 136 ◽  
pp. 105210
Author(s):  
Rajiv Nandan ◽  
Vikram Singh ◽  
Virender Kumar ◽  
S.S. Singh ◽  
K.K. Hazra ◽  
...  
Keyword(s):  
Cropping Systems ◽  
Conservation Agriculture ◽  
Crop Productivity ◽  
Seed Density ◽  
Weed Seed

Weed seed predation rate in cereals as a function of seed density and patch size, under high predation pressure by rodents

Weed Research ◽  
2013 ◽  
Vol 54 (2) ◽  
pp. 186-195 ◽  
Author(s):  
D Daedlow ◽  
P R Westerman ◽  
B Baraibar ◽  
S Rouphael ◽  
B Gerowitt
Keyword(s):  
Seed Predation ◽  
Patch Size ◽  
Predation Rate ◽  
Predation Pressure ◽  
Seed Density ◽  
Weed Seed ◽  
High Predation ◽  
High Predation Pressure
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