Plant Soil and Environment最新文献

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The potential of glyphosate-alternatives like electrophysical weeding in the stale seedbed method for Alopecurus myosuroides (Huds.) control 草甘膦替代品的潜力,如电物理除草在陈旧的苗床方法中控制黄斑鸠(Huds.)
Plant Soil and Environment Pub Date : 2023-11-06 DOI: 10.17221/386/2023-pse
Benjamin Klauk, Jan Petersen
{"title":"The potential of glyphosate-alternatives like electrophysical weeding in the stale seedbed method for Alopecurus myosuroides (Huds.) control","authors":"Benjamin Klauk, Jan Petersen","doi":"10.17221/386/2023-pse","DOIUrl":"https://doi.org/10.17221/386/2023-pse","url":null,"abstract":"<br />Changing political demands requires the search for alternatives to glyphosate, which has often been used in the stale seedbed method. In three field trials between 2020 and 2023, three electrophysical treatments (XPower System, Zasso®) differing in speed, three mechanical treatments (disc harrow, rotary harrow, cultivator) and three chemical treatments (glyphosate, maleic hydrazide, pelargonic acid + maleic hydrazide) were evaluated concerning the efficacy and economic performance in stale seedbed method in <i>Alopecurus myosuroides</i> control. Process costs for each treatment were calculated. Furthermore, the maximum investment costs for the XPower system were calculated to be on the same level as the other treatments. In all treatments, the density of <i>A. myosuroides</i> in autumn was significantly lower than in the control. In general, the fewest plants and heads were found in the chemical treatments. Despite the lower plant density, the electrophysical method did not show a significant difference in the number of heads compared to the untreated control, especially at higher speeds. Calculated process costs ranged between<br /> 40 €/ha (glyphosate) and 430 €/ha (pelargonic acid + maleic hydrazide). To be economically comparable with the other treatments, the investment of the XPower should be at maximum between – 219 000 € (glyphosate) and 300 000 €Â (pelargonic acid + maleic acid), depending on the driving speed. In a holistic view, electrophysical control, as well as pelargonic acid and maleic hydrazide as glyphosate alternatives in the stale seedbed method, are not suitable. A stale seedbed with mechanical control of <i>A. myosuroides</i> is recommended.","PeriodicalId":20244,"journal":{"name":"Plant Soil and Environment","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135589945","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Putrescine improves salt tolerance of wheat seedlings by regulating ascorbate and glutathione metabolism, photosynthetic performance, and ion homeostasis 腐胺通过调节抗坏血酸和谷胱甘肽代谢、光合性能和离子稳态来提高小麦幼苗的耐盐性
Plant Soil and Environment Pub Date : 2023-11-01 DOI: 10.17221/312/2023-pse
Xinliang Zhao, Yibo Zhang, Xiaoqing Zhang, Changjuan Shan
{"title":"Putrescine improves salt tolerance of wheat seedlings by regulating ascorbate and glutathione metabolism, photosynthetic performance, and ion homeostasis","authors":"Xinliang Zhao, Yibo Zhang, Xiaoqing Zhang, Changjuan Shan","doi":"10.17221/312/2023-pse","DOIUrl":"https://doi.org/10.17221/312/2023-pse","url":null,"abstract":"To supply more insights into the roles of putrescine (Put) in alleviating salt stress in wheat crops, we explored the effects of Put on ascorbate (ASC) and glutathione metabolism, photosynthetic performance, and ion homeostasis in leaves of salt-stressed wheat seedlings. Our results displayed that salt stress increased the activities of enzymes in ASC and glutathione metabolism, including ascorbate peroxidase, dehydroascorbate reductase, monodehydroascorbate reductase, glutathione reductase, gamma-glutamylcysteine synthetase, and l-galactono-1,4-lactone dehydrogenase, which increased reduced ascorbate (AsA), dehydroascorbate (DHA), reduced glutathione (GSH), oxidised glutathione (GSSG), total ASC and total glutathione contents. Whereas, salt stress induced higher increases in the contents of DHA and GSSG than those of AsA and GSH, which led to reduced AsA/DHA and GSH/GSSG. Meanwhile, salt stress reduced photosynthetic rate (Pn), maximum photochemical efficiency of PSII (Fv/Fm), and the contents of chlorophyll and carotenoids, and destroyed Na+/K+ homeostasis, which further inhibited plant growth. In comparison with salt stress alone, Put strengthened the activities of the above enzymes, which further increased the above metabolites contents, as well as AsA/DHA and GSH/GSSG in leaves of salt-treated seedlings. In this way, Put reduced malondialdehyde content and electrolyte leakage. Besides, Put also increased Pn, Fv/Fm, and above pigments contents, and maintained Na+/K+ homeostasis. Meanwhile, Put increased plant height and biomass of salt-treated seedlings. The present findings clearly implied that Put enhanced salt tolerance of wheat crops by strengthening ASC and glutathione metabolism, photosynthetic performance, and maintaining ion homeostasis in leaves. Therefore, Put can be applied to strengthen the salt tolerance of wheat crops in production and cultivation.","PeriodicalId":20244,"journal":{"name":"Plant Soil and Environment","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135320939","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Effects of exogenous ascorbic acid on photosynthesis and xanthophyll cycle in alfalfa (Medicago sativa L.) under drought and heat stress 外源抗坏血酸对干旱和热胁迫下紫花苜蓿光合作用和叶黄素循环的影响
Plant Soil and Environment Pub Date : 2023-10-31 DOI: 10.17221/330/2023-pse
Yaqian Zong, Chao Xu, Kai Zhou, Xinhui Duan, Bo Han, Chenggang He, Hua Jiang
{"title":"Effects of exogenous ascorbic acid on photosynthesis and xanthophyll cycle in alfalfa (Medicago sativa L.) under drought and heat stress","authors":"Yaqian Zong, Chao Xu, Kai Zhou, Xinhui Duan, Bo Han, Chenggang He, Hua Jiang","doi":"10.17221/330/2023-pse","DOIUrl":"https://doi.org/10.17221/330/2023-pse","url":null,"abstract":"","PeriodicalId":20244,"journal":{"name":"Plant Soil and Environment","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135871576","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Assessment of the effect of optimised field plot size on the crop yield 优化田块面积对作物产量影响的评价
Plant Soil and Environment Pub Date : 2023-10-30 DOI: 10.17221/262/2023-pse
Jakub Elbl, Antonín Kintl, Martin Brtnický, Petr Širůček, Jiří Mezera, Vladimír Smutný, Jan Vopravil, Jiří Holátko, Igor Huňady, Vojtěch Lukas
{"title":"Assessment of the effect of optimised field plot size on the crop yield","authors":"Jakub Elbl, Antonín Kintl, Martin Brtnický, Petr Širůček, Jiří Mezera, Vladimír Smutný, Jan Vopravil, Jiří Holátko, Igor Huňady, Vojtěch Lukas","doi":"10.17221/262/2023-pse","DOIUrl":"https://doi.org/10.17221/262/2023-pse","url":null,"abstract":"The presented research deals with the effect of plot size changes on the crop yield. Three plots were chosen in a company engaged in conventional agriculture, on which yields were monitored from 2019 using yield maps. In 2020, the plots (initial size > 30 ha) were divided into different parts sized < 30 ha. In 2021, these newly arisen parts of the plots were harvested. Changes in the yield of grown crops were analysed using yield maps acquired by the harvesting machines. Relative yields (%) and absolute yields (t/ha) were determined on all experimental land parts arising from the initial plots’ division. The values were then compared with yields recorded before the division of individual plots using zonal statistics. Measured relative yield values clearly show (<i>P</i> < 0.05) that the division of plots resulted in the increased heterogeneity of crop yields. On the initial plots as well as on the newly arisen plots, the relative yield was divided into the following categories: < 70, 70–85, 85–95, 95–105, 105–115, 115–130 and > 130%, with the value of 100% representing average yield. The analysis of measured yield data showed that the division of plots into smaller parts resulted in an uneven yield distribution because if a divided plot was heterogeneous in terms of yield levels, a cumulation of \"higher yield levels (> 100%)\" could have occurred in one specific newly arisen plot at the expense of another one. Moreover, new marginal parts of lands came into being during the division of larger soil complexes, and hence zones with potentially reduced yields.","PeriodicalId":20244,"journal":{"name":"Plant Soil and Environment","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136018989","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Inoculation with Bacillus alters nitrogen uptake and metabolism in roots of Diospyros lotus under wheat straw addition in soil 土壤中添加麦秸条件下,接种芽孢杆菌改变了薯蓣根系对氮的吸收和代谢
Plant Soil and Environment Pub Date : 2023-10-25 DOI: 10.17221/225/2023-pse
Peng Zhang, Fengge Hao, Zitan Zhu, Dongmei Lang, Huiling Hu
{"title":"Inoculation with Bacillus alters nitrogen uptake and metabolism in roots of Diospyros lotus under wheat straw addition in soil","authors":"Peng Zhang, Fengge Hao, Zitan Zhu, Dongmei Lang, Huiling Hu","doi":"10.17221/225/2023-pse","DOIUrl":"https://doi.org/10.17221/225/2023-pse","url":null,"abstract":"<br />A <sup>15</sup>N-labelling technique was carried out to investigate the effect of wheat straw co-application with <i>Bacillus nealsonii</i>, <i>Cohnella</i>, and <i>Paenibacillus lautus</i> on N uptake and assimilation in <i>Diospyros lotus</i>. Wheat straw combined with <i>Bacillus</i> increased the plant height, biomass accumulation, photosynthetic capacity, and uptake of <sup>15</sup>N by roots, with <sup>15</sup>N accumulating mainly in leaves of <i>D. lotus</i>. The NO<sub>3</sub><sup>–</sup>-N content in roots and leaves were decreased by wheat straw co-application with <i>Bacillus</i>, whereas NH<sub>4</sub><sup>+</sup>-N, soluble protein, and total N contents were increased. Wheat straw addition promoted the activities of nitrate reductase, glutamine synthase and glutamate synthase in roots rather than in leaves. These N assimilation enzymatic activities, and glutamic-oxaloacetic transaminase and glutamic pyruvic transaminase activities were markedly increased by wheat straw combined with <i>Bacillus</i>. Moreover, the combined application of wheat straw and <i>Bacillus</i>, particularly <i>B. nealsonii</i>, improved the N use efficiency. These findings suggest that the combined application of wheat straw and <i>Bacillus</i> improved <i>D. lotus </i>growth by increasing N uptake, metabolism, and utilisation efficiency.","PeriodicalId":20244,"journal":{"name":"Plant Soil and Environment","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135113231","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Legume crops use a phosphorus-mobilising strategy to adapt to low plant-available phosphorus in acidic soil in southwest China 豆科作物利用磷动员策略来适应中国西南酸性土壤中植物有效磷的低水平
Plant Soil and Environment Pub Date : 2023-10-24 DOI: 10.17221/254/2023-pse
Mei Chen, Xin Luo, Long Jiang, Rui Dong, K.H.M. Siddique, Jin He
{"title":"Legume crops use a phosphorus-mobilising strategy to adapt to low plant-available phosphorus in acidic soil in southwest China","authors":"Mei Chen, Xin Luo, Long Jiang, Rui Dong, K.H.M. Siddique, Jin He","doi":"10.17221/254/2023-pse","DOIUrl":"https://doi.org/10.17221/254/2023-pse","url":null,"abstract":"Phosphorus (P) deficiency significantly affects crop productivity, especially legume crops. Therefore, it is important to understand the P-acquisition strategies of different leguminous crops. In this study, we undertook a pot experiment with 11 legume crops (soybean, faba bean, pea, cowpea, common bean, lentil, adzuki bean, chickpea, grass pea, red kidney bean and common vetch) to investigate P-acquisition strategies related to root morphology, organic acid and acid phosphatase exudations, and arbuscular mycorrhizal fungi (AMF) colonisation under low (4.4 mg/kg) and optimal (40 mg/kg) P conditions. The results revealed that P deficiency significantly decreased biomass and P accumulation, root length (10.5%), and root surface area (7.9%), increased organic acid exudation (80.2%) and acid phosphatase activity (16.8%), and did not affect root diameter or root AMF colonisation rate. Principal component analysis revealed a positive correlation between organic acid exudation and acid phosphatase activity, while root length and root surface area negatively correlated with organic acid exudation, acid phosphatase activity and root AMF colonisation rate. P accumulation positively correlated with root length, surface area, and diameter but negatively correlated with organic acid exudation, acid phosphatase activity, and AMF colonisation rate. These findings confirmed the following: (1) legume crops use a P-mobilisation strategy related to organic acid exudation and acid phosphatase activity to acquire P under low soil P conditions; (2) organic acid exudation coincided with acid phosphatase activity to mobilise soil inorganic and organic P, improving P accumulation; (3) a trade-off exists between the P-scavenging strategy related to root morphology traits and mobilisation strategy.","PeriodicalId":20244,"journal":{"name":"Plant Soil and Environment","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135273386","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Yield of sweet corn and sunflower as affected by different cultivation methods and fertilisation schemes 不同栽培方法和施肥方案对甜玉米和向日葵产量的影响
Plant Soil and Environment Pub Date : 2023-10-20 DOI: 10.17221/292/2023-pse
Attila Vad, András Szabó, Oqba Basal, Szilvia Veres
{"title":"Yield of sweet corn and sunflower as affected by different cultivation methods and fertilisation schemes","authors":"Attila Vad, András Szabó, Oqba Basal, Szilvia Veres","doi":"10.17221/292/2023-pse","DOIUrl":"https://doi.org/10.17221/292/2023-pse","url":null,"abstract":"If appropriately applied, tillage can positively affect the crop’s yield by enhancing the soil’s physical properties. Fertilisation also has beneficial effects on yield if applied at efficient rates by increasing available-to-uptake nutrients and improving soil’s chemical properties. A field experiment was carried out in Debrecen, Hungary, to evaluate the individual and the interaction effects of these 2 factors on sunflower and sweet corn. The cultivation methods applied were ploughing (C1), direct drilling (C2) and deep loosening (C3). In addition, 3 fertilisation rates were applied to each cultivation system: F1 (control, no fertilisation); F2 (100 : 50 : 70) kg NPK/ha and F3 (150 : 100 : 120) kg NPK/ha in a randomised complete block design (RCBD) with 4 replicates. Our results showed that fertilisation did not affect the yield of sweet corn measurably. However, C1 resulted in the highest yield, whereas C2 and C3 resulted in relatively similar yields. In sunflowers, the yields of both C1 and C2 were higher than that of C3. No significant differences were recorded between C1 and C2. The yields of both F2 and F3 were higher than the yield of F1. The differences between F2 and F3 were insignificant. It could be concluded that the cultivation method is a determining factor in the yield of sweet corn. The effects of both fertilisation and cultivation treatments were more detectable in sunflowers. The differences between the two fertilisation rates (F2 and F3) were insignificant in both species, indicating that the extra fertilisation levels might be unnecessary.","PeriodicalId":20244,"journal":{"name":"Plant Soil and Environment","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135616675","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Herbicides and nutrients interaction on earthworm activity in tomato cultivated soil and toxicity appraisal 除草剂和养分互作对番茄栽培土壤蚯蚓活性的影响及毒性评价
Plant Soil and Environment Pub Date : 2023-09-29 DOI: 10.17221/223/2023-pse
Pavani Yerra, Ponnusamy Janaki, Alaguthevar Ramalakshmi, Ramasamy Jagadeeswaran, Arjunan Sankari, Palanisamy Murali Arthanari
{"title":"Herbicides and nutrients interaction on earthworm activity in tomato cultivated soil and toxicity appraisal","authors":"Pavani Yerra, Ponnusamy Janaki, Alaguthevar Ramalakshmi, Ramasamy Jagadeeswaran, Arjunan Sankari, Palanisamy Murali Arthanari","doi":"10.17221/223/2023-pse","DOIUrl":"https://doi.org/10.17221/223/2023-pse","url":null,"abstract":"While nutrients are administered through various sources and combinations, herbicides are used for pre-plant and pre-emergence weed control in the tomato fields. Therefore, a study was conducted to understand the effects of nutrient fertilisation through inorganic and organic sources along with farmers practice and the application of three herbicides, namely glyphosate, pendimethalin, and metribuzin, individually or in combinations, on earthworm activity in tomato crops. The herbicides caused a significant reduction in earthworm biomass and escapement to the lower 15 cm depth. Application of pendimethalin and metribuzin to soils inorganically fertilised with major and micronutrients resulted in low survival rates and a high ecological risk quotient. The effect was attenuated when farmyard manure was applied. The study suggests that when 2 to 3 herbicides are applied in succession and combined with inorganic fertilisers as nutrient sources, stringent measures like adding organic nutrient sources, applying the correct herbicide combination, etc., must be followed to reduce their toxicity to earthworms. This helps to protect and sustain earthworm activity and biodiversity in the soil.","PeriodicalId":20244,"journal":{"name":"Plant Soil and Environment","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135132017","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Effects of different habitats on Achnatherum inebrians (Hance) Keng ex Tzvelev (drunken horse grass) soil seed banks and aboveground vegetation 不同生境对醉马草土壤种子库和地上植被的影响
Plant Soil and Environment Pub Date : 2023-09-29 DOI: 10.17221/191/2023-pse
Saimilakezi Taiwaikuli, Guili Jin, Shazhou An, Yiqing Dong, Peng Wei
{"title":"Effects of different habitats on Achnatherum inebrians (Hance) Keng ex Tzvelev (drunken horse grass) soil seed banks and aboveground vegetation","authors":"Saimilakezi Taiwaikuli, Guili Jin, Shazhou An, Yiqing Dong, Peng Wei","doi":"10.17221/191/2023-pse","DOIUrl":"https://doi.org/10.17221/191/2023-pse","url":null,"abstract":"The soil seed bank, as a potential source of ground vegetation renewal, plays an important role in the natural recovery and succession of vegetation as well as in the construction of ecosystems. To clarify the characteristics of the soil seed bank of Achnatherum inebrians and its relationship with the aboveground vegetation, the soil seed bank density, species composition and aboveground vegetation of three different grassland types, namely, desert, steppe and meadow, were investigated by means of field survey sampling and indoor germination experiments. The results showed that the seed bank densities of the three habitats were ranked as desert (1 422.22 seeds/m2), steppe (2 077.78 seeds/m2) and meadow (3 722.22 seeds/m2). The numbers of species were 16, 11 and 17, respectively. With respect to the vertical allocation, the soil seed banks in each habitat were shallow, and the seeds were mainly concentrated in the soil surface layer (0–5 cm). The species richness of the soil seed banks in the three habitats was higher than that of the aboveground vegetation, but there were some differences in richness, evenness and dominance. The species richness and diversity of soil seed banks and aboveground vegetation in meadow habitats were higher than those in desert and steppe habitats, indicating that the soil seed banks and aboveground vegetation in meadow habitats had higher stability. There was a significant positive correlation between the density of temporary soil seed banks and the density of aboveground plant communities in grassland habitats. The results may provide some reference for the prevention and control of Achnatherum inebrians in the three habitats.","PeriodicalId":20244,"journal":{"name":"Plant Soil and Environment","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135200382","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Long-term organic fertilisers application increase plant autotrophic, soil heterotrophic respiration and net ecosystem carbon budget in a hillslope agroecosystem 长期施用有机肥增加了坡地农业生态系统植物自养、土壤异养呼吸和生态系统净碳收支
Plant Soil and Environment Pub Date : 2023-09-29 DOI: 10.17221/245/2023-pse
Keke Hua, Wenbo Yang, Bo Zhu
{"title":"Long-term organic fertilisers application increase plant autotrophic, soil heterotrophic respiration and net ecosystem carbon budget in a hillslope agroecosystem","authors":"Keke Hua, Wenbo Yang, Bo Zhu","doi":"10.17221/245/2023-pse","DOIUrl":"https://doi.org/10.17221/245/2023-pse","url":null,"abstract":"The effects of long-term various organic fertilisers application on ecosystem respiration components and net carbon budget have rarely been investigated in a hillslope agricultural ecosystem. Hence, we measured the rates of plant autotrophic (<i>R</i><sub>a</sub>) and soil heterotrophic respiration (<i>R</i><sub>h</sub>) from 2011 to 2012 with five treatments: no fertiliser (CK); mineral fertiliser (MF); MF combined with swine manure (MFS); MF combined with crop straw (MFC), and swine manure (SM). Our results confirm that <i>R</i><sub>a</sub> was found to be more temperature-moisture sensitive than <i>R</i><sub>h</sub>, whereas <i>R</i><sub>h</sub> was more temperature sensitive than <i>R</i><sub>a</sub>. Soil microbial biomass carbon (MBC) is a major factor influencing the temperature sensitivity coefficient of Rh (<i>Q</i><sub>10</sub>), thereby application of organic fertilisers combined with mineral fertilisers (MFS and MFC) significantly increased annual by 19.3% and 17.2% compared with MF treatment. Annual carbon emissions via <i>R</i><sub>h</sub> and <i>R</i><sub>a</sub> under MFS, MFC and SM treatments were increased by 24.6, 28.5, 48.8% and 6.6, 10.6, 1.8%, respectively compared with MF treatment (4.6 and 23.2 t C/ha/year). Net primary production (NPP) under MFS, MFC and SM treatments were increased by 5.4, 6.01, and 15.6% relative to MF treatment (13.6 t C/ha/year), respectively, and the corresponding net ecosystem carbon budget (NECB) increased by 121.2, 172.8, and 342.4%. Our findings establish that long-term organic fertilisers application increase plant autotrophic, heterotrophic respiration and net ecosystem carbon budget, which can increase the carbon sink function. Overall, crop straw combined with mineral fertiliser is a feasible agronomy practice to increase carbon sink function, reduce soil erosion and maintain crop yield.","PeriodicalId":20244,"journal":{"name":"Plant Soil and Environment","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135131744","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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