Allelopathic Potential of Aqueous Extracts from Fleagrass (Adenosma buchneroides Bonati) against Two Crop and Three Weed Species

Wang, Chen; Qi, Jinfeng; Liu, Qing; Wang, Yuhua; Wang, Hongbin

doi:10.3390/agriculture12081103

Cited by 6 publications

(4 citation statements)

References 47 publications

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“…The analysis of the allelopathic synthesis effect of M. sativa aqueous roots extracts showed that their phytotoxic activity on L. perenne germinated separately was higher compared to M. sativa , and the same was also observe when the seeds were germinated as a mixture with L. perenne. Wang et al [ 51 ] also examined the allelopathic potential of other plants for seed germination and the growth of weed seedlings, which, in addition to determining its effects on crops, can be used for weed control. In accordance with the literature [ 51 , 52 ], allelopathy is a process by which phytotoxic substances are produced and released from the roots, leaves, flowers, stems or seeds of plants and microorganisms.…”

Section: Discussionmentioning

confidence: 99%

“…Wang et al [ 51 ] also examined the allelopathic potential of other plants for seed germination and the growth of weed seedlings, which, in addition to determining its effects on crops, can be used for weed control. In accordance with the literature [ 51 , 52 ], allelopathy is a process by which phytotoxic substances are produced and released from the roots, leaves, flowers, stems or seeds of plants and microorganisms. These chemicals have an impact on coexistent species and can therefore play an important role in mixed crops, including in temporary grasslands.…”

Section: Discussionmentioning

confidence: 99%

“…To determine the effects of the aqueous root extracts and the pH of the solutions on the seed germination and seedling growth of the studied species, the response index ( RI ) and synthesis effect ( SE ) were calculated using the following Equations (1) and (2): RI = 1 − (C/T) if T ≥ C; RI = (T/C) − 1 if T< C, where C is the mean value of the control, and T is the mean value of each treatment. RI ranges from −1 to + 1, where RI > 0 indicates the stimulation of growth and RI < 0 indicates inhibition relative to the controls, and the magnitude of the RI value reflects the intensity of the allelopathic effect [ 51 , 56 ]. SE = ( RI GE + RI GC + RI RL + RI LL + RI FW + RI DW)/6, where RI GE is the RI value of the seed germination energy, RI GC is the RI value of the seed germination capacity, RI RL is the RI value of the root length, RI LL is the RI value of the leaf length, RI FW is the RI value of the fresh weight, and RI DW is the RI value of the dry weight.…”

Section: Methodsmentioning

confidence: 99%

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Germination of Lolium perenne and Medicago Species under the Conditions of Drought and Silicon Application as Well as Variable pH and Medicago sativa Root Extracts

Borawska-Jarmułowicz

Mastalerczuk

2023

Plants

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Drought and allelopathic conditions impact the germination of seeds of grass and legume species used in mixtures on grassland. This study evaluated the effects of drought and Medicago sativa root extracts at different pH levels on the germination and characteristics of seedlings of Lolium perenne and selected Medicago species. Two experiments were carried out: the first explored the effects of drought induced by PEG solutions (0.0, −0.3, and −0.6 MPa) under silicon (Si) application; the second studied the influence of Medicago sativa root extracts (12 and 24 g/100 mL H2O) and variable pH solutions (control, 5.0, and 6.5) on seed germination. Germination was carried out on Petri dishes for individual species and in two-species mixtures. The drought conditions did not affect the germination capacity of seeds, but it increased the dry weight of the seedlings of the tested species. The application of silicon decreased the root length of the seedlings of all species, independent of the germination conditions. The higher concentration of M. sativa root extract combined with the studied pH solutions had an inhibitive impact on the germination capacity of L. perenne. Our findings revealed that the lower concentration of M. sativa root extract had a beneficial effect on the morphological features (length of roots and leaves, fresh and dry weight) of the seedlings when germination was carried out separately for both species. In the mixture, the effect was especially marked for L. perenne (only in terms of the root length and fresh weight of seedlings). The applied root extracts in combination with the acidic pH conditions limited the germination capacity and growth of the seedlings of L. perenne the most when germination was performed separately. It was concluded from this study that silicon application did not improve the germination capacity of seeds under drought conditions, whereas the germination of L. perenne seeds in a mixture with M. sativa mitigated the negative allelopathic effects of M. sativa root extracts on the seed germination capacity and morphological features of seedlings of L. perenne.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

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Germination of Lolium perenne and Medicago Species under the Conditions of Drought and Silicon Application as Well as Variable pH and Medicago sativa Root Extracts

Borawska-Jarmułowicz

Mastalerczuk

2023

Plants

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“…Straw is an important byproduct of crop production and a valuable renewable energy source. After straw covering, chemical substances are released through pathways such as root secretion, stem and leaf volatilization, rain and fog leaching, and plant residue decomposition, which affect the surrounding plants or microorganisms [12][13][14]. These substances are called allelopathic substances and are secondary metabolites of diverse types with a small molecular weight and simple structure.…”

Section: Introductionmentioning

confidence: 99%

Allelopathic Effects of Corn Straw and Its Water Extracts on Four Weed Species and Foxtail Millet

Dong,

et al. 2024

Plants

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Straw covering is a protective tillage measure in agricultural production, but there is relatively little research on the allelopathic effects of corn straw on weeds and foxtail millet. This experiment studied the allelopathic effects of corn straw on four weeds (Chenopodium album, Setaria viridis, Echinochloa crus-galli and Amaranthus retroflexus) in foxtail millet fields, and also measured the growth indicators of foxtail millet. The study consisted of Petri dish and field experiments. Five treatments were used in the Petri dish experiment: clear water as control (0 g/L, TCK) and four types of corn straw water extracts. They were, respectively, the stock solution (100 g/L, T1), 10 X dilution (10 g/L, T2), 50 X dilution (2 g/L, T3), and 100 X dilution (1 g/L, T4) of corn straw water extracts. Additionally, seven treatments were set up in the field experiment, consisting of three corn straw covering treatments, with covering amounts of 3000 (Z1), 6000 (Z2) and 12,000 kg/ha (Z3), and four control treatments—one treatment with no corn straw cover (CK) and three treatments involving the use of a black film to create the same shading area as the corn straw covered area, with black film coverage areas of 50% (PZ1), 70% (PZ2), and 100% (PZ3), respectively. The results showed that the corn straw water extract reduced the germination rate of the seeds of the four weeds. The T1 treatment resulted in the allelopathic promotion of C. album growth but the inhibition of S. viridis, E. crus-galli, and A. retroflexus growth. Treatments T2, T3, and T4 all induced the allelopathic promotion of the growth of the four weeds. The order of the effects of the corn straw water extracts on the comprehensive allelopathy index of the four weed seeds was as follows: C. album > S. viridis > A. retroflexus > E. crus-galli. With an increase in the corn straw mulching amount, the density and total coverage of the four weeds showed a gradual downward trend, whereas the plant control effect and fresh weight control effect showed a gradual upward trend. All indices showed the best results under 12,000 kg/ha of mulching and returning to the field. Overall, corn straw coverage significantly impacted the net photosynthetic rate and transpiration rate of foxtail millet and increased the yield of foxtail millet. Under coverages of 6000 and 12,000 kg/ha, the growth of foxtail millet is better. Based on our findings, we recommend a corn straw coverage of 12,000 kg/ha for the allelopathic control of weeds in foxtail millet fields.

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Bioactivities of thymol and p-cymene from the essential oil of Adenosma buchneroides against three stored-product insects

Xie,

Tian-Liang,

et al. 2023

Environ Sci Pollut Res

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Allelopathic Potential of Aqueous Extracts from Fleagrass (Adenosma buchneroides Bonati) against Two Crop and Three Weed Species

Cited by 6 publications

References 47 publications

Germination of Lolium perenne and Medicago Species under the Conditions of Drought and Silicon Application as Well as Variable pH and Medicago sativa Root Extracts

Germination of Lolium perenne and Medicago Species under the Conditions of Drought and Silicon Application as Well as Variable pH and Medicago sativa Root Extracts

Allelopathic Effects of Corn Straw and Its Water Extracts on Four Weed Species and Foxtail Millet

Bioactivities of thymol and p-cymene from the essential oil of Adenosma buchneroides against three stored-product insects

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