Weed seed bank dynamics responses to long‐term chemical control in a rice–wheat cropping system

Gao, Pinglei; Zhang, Zheng; Shen, Jian; Mao, Yuxiang; Wei, Shugang; Ji, Wei; Zuo, Ranling; Li, Ruhai; Song, Xiaoling; Qiang, Sheng

doi:10.1002/ps.5731

Cited by 12 publications

(11 citation statements)

References 43 publications

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“…Here we found the evenness of non-crop plants in soybean fields to be significantly lower than inside boundaries and pastures. We attribute this to agricultural disturbances (herbicide usage, soil disturbance, and invasion by alien species) as they tend to have a destabilizing effect on evenness (Adhikari and Menalled 2018;Gao et al 2020). Disturbance gives the opportunity for species, that are able to tolerate the disturbance, to dominate.…”

Section: Plant Diversity Patternsmentioning

confidence: 99%

Diversity patterns of plants and arthropods in soybean agro-ecosystems in the Grassland Biome of South Africa

et al. 2020

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Abstract. Janse van Rensburg PD, Siebert SJ, Masehela T, Ellis S, Van den Berg J. 2020. Diversity patterns of plants and arthropods in soybean agroecosystems in the grassland biome of South Africa. Biodiversitas 21: 5559-5570. Soybean is widely cultivated in the grassland biome of South Africa (ca. 800 000 ha per annum). Yet the possible effects that large-scale cultivation of soybean has on biodiversity in adjacent habitat are not fully understood. This study aimed to describe the plant and arthropod species assemblages and diversity patterns within these soybean agroecosystems. Surveys were conducted inside soybean fields, field boundaries (transition zones between soybean fields and adjacent habitat), and adjacent pasture. An adapted D-vac was used to sample arthropods in the different zones, while plant surveys were conducted by means of fixed width (2 m) line transect. A total of 320 plant species (4910 specimens) and 373 arthropod morpho-species (9216 specimens) were recorded. Soybean fields had significantly lower plant and arthropod diversity than the adjacent habitats. Plant species diversity was similar in the field boundary and adjacent pasture. Significantly higher species richness and abundance of arthropods were found in the boundary than the pasture. These results show that the cultivation of soybean and the associated agricultural practices had no adverse effects on biodiversity patterns in the adjacent habitats. However, the boundary dominated by alien plant species did contain a significantly different plant species composition from the pasture. This difference was also mirrored by unique assemblages of arthropods. This suggests that disturbance resulting from soybean cultivation contributed to species losses and gains that maintained diversity in the field boundary but changed its plant and arthropod species composition. No effect was found in the pasture beyond the boundary (> 50 m). High diversity, but unique species assemblages of plants and arthropods in the boundary and pasture suggest that these habitats may have important conservation value in soybean agroecosystems by supporting ecosystem functions and services.

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Section: Plant Diversity Patternsmentioning

confidence: 99%

Diversity patterns of plants and arthropods in soybean agro-ecosystems in the Grassland Biome of South Africa

et al. 2020

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“…The species diversity of the soil weed seed bank was assessed with the following indices ( Gao et al., 2020 ):…”

Section: Methodsmentioning

confidence: 99%

“…The composition and succession of the weed community are closely related to the soil weed seed bank, which is influenced by farming practices, such as tillage and fertilization practices, rotation and continuous cropping and weeding methods ( Yin et al., 2005 ; Chamanabad et al., 2009 ; Chauhan and Opena, 2012 ; Santínmontanyá et al., 2013 ). Studies on the composition of weed seed banks and the factors affecting their formation in farmland soils could help predict the infestation of weed populations and improve decision-making for managing specific weed problems ( Chauhan and Johnson, 2010 ; Gao et al., 2020 ).…”

Section: Introductionmentioning

confidence: 99%

Influence of organic rice production mode on weed composition in the soil seed bank of paddy fields

et al. 2022

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IntroductionIt is of great significance to determine the composition of the soil weed seed bank under different organic rice production modes to provide decision making support for rational integrated weed management in organic rice production.MethodsThe soil weed seed bank of the four dominant organic production modes, namely, rice-green manure rotation (RG), rice monoculture (RM), rice-crayfish coculture (RC) and rice-duck coculture (RD), with different numbers of consecutive planting years (3 to 10 years) in different sites in Jiangsu Province were investigated to determine the influence of organic rice production mode on weed composition.Results and DiscussionThere were significant differences in the weed composition in the soil seed bank among the four organic rice production modes. The most dominant weed group was broadleaf weeds in the soil seed bank under the RG and RM modes; however, under the RM mode, the most dominant weed species were sedge and grass weeds. Sedge and grass weeds dominated the soil seed bank of the RC and RD modes, respectively. Therefore, specific weed management strategies could be formulated based on the differences in weed composition under different organic rice production modes. The application of organic fertilizer and irrigation were identified as primary factors associated with the differences in weed composition in the soil seed banks, which had higher effects on the weed composition than hand weeding. Consequently, fertilization and irrigation strategies that alter weed composition could be used as improved weed management program components in organic rice production systems. Long-term organic rice planting is beneficial for increasing weed diversity in paddy fields. Our results indicated that weed species diversity increased and weed community evenness and dominance decreased with the increase in the number of consecutive planting years under all four organic rice production modes.

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“…Chemical herbicides greatly influenced the composition of weeds in wheat crop but total density of seed decrease in both treated and untreated plots. Whereas composition of seed bank and species density were affected by herbicides (Gao et al, 2020). Weeds can also be controlled by using the extracts of plants like transgenic crop plants, breeding, mutation, sorghum stem, and other biomaterials to reduce the poisonous effect of weeds (Anwar et al, 2016;Jaffar et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

Broad Leaved Weed’s Seed Bank and Flora Dynamics in Wheat as Affected by Different Herbicides

Ali¹,

Hanif²,

Umar³

et al. 2022

PJAR

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| To research out an efficient chemical remedy of broad-leaved weeds in winter wheat at Pothwar Region of Pakistan, a study was performed during 2016-17 at University Research Farm Chakwal Road Rawalpindi. Four herbicides were used as once and twice application, i.e., Buctril Super (Bromoxinil 30% with MCPA 30% w/v), Ally Max (Metsulfuron Methyl 14.3% w/w with Tribenuron Methyl 14.3% w/w), Starane M (Fluroxypyre 10% with MCPA 40% w/w) and Clean wave (Aminopyralid 1% with Fluroxypyre14% w/w) at recommended doses. A weedy check and a weed free plot were also kept for comparison. Results showed that in comparison to control plot (weedy check), there was 73.41% increase in the grain yield of wheat where double spray of Ally Max was done and it was followed by 58.28%, 54.78%, 51.28% and 36.59% where double spray of clean wave, Buctril Super, Starane Mand single hand weeding were applied respectively. Similarly, there was 70.1% decrease in the seed bank of weeds where Starane M was sprayed twice as compared with control plot which was followed by 69.17%, 69%, 61.39% and 45.18% decrease where Ally Max twice, Buctril Super twice, clean wave twice and once hand weeding were applied respectively. So, resultantly, it is concluded that twice application of all tested herbicides gave best results for controlling flora and weeds seed bank of prevailing weeds which significantly increased the wheat yield. So, twice application of Starane M, Ally Max, Buctril Super and Clean Wave herbicides is recommended to improve the productivity of wheat along with efficient control of weed seed bank and weed flora in wheat under rain-fed conditions of Pothwar Region of Pakistan.

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Weed seed bank dynamics responses to long‐term chemical control in a rice–wheat cropping system

Cited by 12 publications

References 43 publications

Diversity patterns of plants and arthropods in soybean agro-ecosystems in the Grassland Biome of South Africa

Diversity patterns of plants and arthropods in soybean agro-ecosystems in the Grassland Biome of South Africa

Influence of organic rice production mode on weed composition in the soil seed bank of paddy fields

Broad Leaved Weed’s Seed Bank and Flora Dynamics in Wheat as Affected by Different Herbicides

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