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SISTEMAS DE CULTIVO, AGREGAÇÃO E ATRIBUTOS QUÍMICOS SOB SOLO ARENOSO NA REGIÃO SUDESTE DO BRASIL 巴西东南部沙土下的耕作系统、聚集和化学性质
IF 1.7 4区 农林科学 Q3 SOIL SCIENCE Pub Date : 2022-01-01 DOI: 10.29327/siacs2021.409509
Tiago Paula da Silva, Hugo de Souza Fagundes, Igor de Sousa morais, Luiz Alberto da Silva Rodrigues Pinto, Gilsonley Lopes Dos Santos, Marcos Gervasio Pereira
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引用次数: 0
INFLUÊNCIA DA GLOMALINA FACILMENTE EXTRAÍVEL NA ESTABILIDADE DE AGREGADOS RIZOSFÉRICOS 易提取球蛋白对根际团聚体稳定性的影响
IF 1.7 4区 农林科学 Q3 SOIL SCIENCE Pub Date : 2022-01-01 DOI: 10.29327/siacs2021.436253
Aline Martineli Batista, Thaís Nascimento Pessoa, Fernando Dini Andreote, Paulo Leonel Libardi
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引用次数: 0
SOIL ACIDIFIERS AND PHOSPHATE FERTILIZATION ON THE QUALITY OF MELONS PRODUCED IN CALCAREOUS SOIL IN THE BRAZILIAN SEMI-ARID 土壤酸化剂和磷肥对巴西半干旱钙质土壤甜瓜品质的影响
IF 1.7 4区 农林科学 Q3 SOIL SCIENCE Pub Date : 2022-01-01 DOI: 10.29327/siacs2021.409748
Eleonora Barbosa Santiago da Costa, João Claudio Vilvert, Ana Cláudia da Silva, José Francismar de Medeiros, Edna Maria Mendes Aroucha
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引用次数: 0
QUALIDADE FÍSICA DE UM VERTISSOLO SOB DIFERENTES SISTEMAS DE MANEJO NO SERTÃO PARAIBANO paraiba腹地不同管理制度下变性土的物理质量
IF 1.7 4区 农林科学 Q3 SOIL SCIENCE Pub Date : 2022-01-01 DOI: 10.29327/siacs2021.424840
Pedro Luan Ferreira da Silva, Flávio Pereira de Oliveira, Gysleynne Gomes da Silva Costa, Adriana Ferreira Martins
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引用次数: 0
O MODO DE APLICAÇÃO DO ADUBO FOSFATADO INFLUENCIA A PRODUÇÃO DO CAPIM MARANDU? 磷肥施用方式对马兰度草生产有影响吗?
IF 1.7 4区 农林科学 Q3 SOIL SCIENCE Pub Date : 2022-01-01 DOI: 10.29327/siacs2021.438950
Diogo José Santana Pereira, Antonio Clementino dos Santos, Caryze Cristine Cardoso Sousa, Tatiane Sousa CRUZ, Tiago Barbalho André, kennyd williames de sousa, Janaina Silva FREITAS
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引用次数: 0
Nitrogen release from pelletized poultry fertilizer in two soils: influence of soil moisture and microbial biomass 两种土壤中颗粒状家禽肥料氮释放:土壤水分和微生物量的影响
IF 1.7 4区 农林科学 Q3 SOIL SCIENCE Pub Date : 2022-01-01 DOI: 10.36783/18069657rbcs20210101
E. Monaci, Carlo Angeletti, C. Casucci, C. Vischetti
Nitrogen release from organic amendments, e.g., from organic agriculture, is a key process to raise soil fertility to sustain crop production in low environmental impact agroecosystems. This study aimed to investigate nitrogen release from a pelletized organic amendment containing poultry litter, guano and pot ale applied to soil from a field under two different management systems: an alfalfa-based crop rotation, enriched with N by the legume, under low-intensity tillage and a cereal-sunflower crop rotation under high-intensity tillage. Both sample types were evaluated under different temperature and soil moisture conditions (optimal and variable). The influence of the released amount of N-NO3 on soil microbial biomass, soil basal respiration as well as on β-glucosidase, alkaline phosphatase and o-diphenoloxidase were investigated. The soil fertility level under low-intensity was higher than under high-intensity tillage. Consequently, compared to the control, microbial biomass growth in pellet-treated samples was intensified, both under optimal and variable conditions. Nevertheless, at the end of the experiment under variable conditions, microbial biomass decreased down to the level of the control. Soil moisture was identified as the limiting factor for basal respiration in low-tillage soil, while in the intensively tilled soil, low fertility was limiting, and respiration increased in response to pellet application, supplying C for microbial biomass. During the experimental period, the investigated enzyme activities were somewhat intensified by pellet application, contributing slightly to improve soil biochemical fertility. More N-NO3 was released from soil under low than high-intensity tillage; however after 90-days, the pellet was not completely mineralized, and even at optimal soil moisture content, nitrate release was only partial. This indicated that pelletizing, though useful for practical reasons such as handling, storage and field distribution, can reduce the fertilization efficiency of organic amendments.
有机改良剂(例如有机农业)释放的氮是提高土壤肥力以维持低环境影响农业生态系统作物生产的关键过程。本研究旨在研究在两种不同管理制度下的土壤中施用含家禽废弃物、鸟粪和锅粪的颗粒状有机改进剂的氮素释放情况:低强度耕作下以苜蓿为基础的豆类富氮轮作和高强度耕作下谷物-向日葵轮作。两种样品类型在不同温度和土壤湿度条件下(最佳和可变)进行了评估。研究了N-NO3释放量对土壤微生物生物量、土壤基础呼吸以及β-葡萄糖苷酶、碱性磷酸酶和邻二酚氧化酶的影响。低强度耕作的土壤肥力水平高于高强度耕作。因此,与对照相比,在最佳和可变条件下,颗粒处理样品中的微生物生物量增长都得到了加强。然而,在实验结束时,在可变条件下,微生物生物量下降到对照水平。土壤水分是低耕土壤基础呼吸的限制因子,而在精耕细作土壤中,低肥力是限制因子,颗粒施用使土壤呼吸增加,为微生物生物量提供碳。在试验期间,施用颗粒对土壤生化肥力的提高有一定的促进作用。低强度耕作比高强度耕作释放出更多的N-NO3;然而,90天后,颗粒并未完全矿化,即使在最佳土壤含水量下,硝酸盐也只是部分释放。这表明,造粒虽然在处理、储存和田间分配等方面有用,但会降低有机改良剂的施肥效率。
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引用次数: 2
Effects of Meloidogyne incognita on the fungal community in tobacco rhizosphere 黑穗槐对烟草根际真菌群落的影响
IF 1.7 4区 农林科学 Q3 SOIL SCIENCE Pub Date : 2022-01-01 DOI: 10.36783/18069657rbcs20210127
C. Xiaolong, Gao Lingling, Deng Xiaopeng, Y. Yongfeng, Wang Jianwei, Z. Zhan, Cai Yongzhan, Huang Feiyan, Yang Min, Tong Wenjie, Y. Lei
The often widespread and serious Root-Knot Nematode (RKN) disease is an important soil-borne disease affecting tobacco production. This study aimed to understand micro-ecological changes caused by RKN disease and interactions between disease and rhizosphere soil fungal communities. The 18S rRNA gene sequencing was used to study changes in rhizosphere fungal community of tobacco plants having RKN disease. In June 2018, a paired comparison was performed between rhizosphere fungal community structures of healthy tobacco plants and those with RKN disease in Yuxi and Jiuxiang, Yunnan Province, China. Compared with uninfested soil, the OTU abundance, Shannon, ACE and Chao1 indexes of infested soil in the two tobacco areas showed a decreasing trend. Principal Coordinate Analysis showed fungal communities of infested soil and uninfested soil in the two tobacco areas were clustered in different areas, and the community composition was significantly different. Moreover, the dominant fungi community and relative abundance are significantly different at phylum, genus and species levels. More beneficial fungi, such as Penicillium and Aspergillus, were found in soil samples of healthy plants, whereas more pathogenic fungi, such as Phoma and Alternaria, were found in soil samples of diseased plants. In conclusion, changes in fungal community structure and decreases in species diversity and richness were important characteristics of rhizosphere soils from diseased tobacco plants. Disequilibrium in the tobacco rhizosphere micro-ecosystem may allow the development of RKN disease and other more complex diseases.
根结线虫病是影响烟草生产的一种重要土传病害,分布广泛,危害严重。本研究旨在了解RKN病害引起的微生态变化以及病害与根际土壤真菌群落的相互作用。利用18S rRNA基因测序技术研究了烟草RKN病根际真菌群落的变化。2018年6月,对云南省玉溪和九乡地区健康烟草根际真菌群落结构与RKN病烟草根际真菌群落结构进行了配对比较。与未侵染土壤相比,两烟区侵染土壤的OTU丰度、Shannon、ACE和Chao1指数均呈下降趋势。主坐标分析表明,两烟区侵染土和未侵染土真菌群落聚集在不同区域,群落组成差异显著。此外,优势真菌群落和相对丰度在门、属和种水平上存在显著差异。在健康植物的土壤样品中发现了更多的有益真菌,如青霉菌和曲霉,而在患病植物的土壤样品中发现了更多的致病真菌,如Phoma和Alternaria。综上所述,真菌群落结构的变化、物种多样性和丰富度的降低是病烟根际土壤的重要特征。烟草根际微生态系统的不平衡可能导致RKN病和其他更复杂的疾病的发生。
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引用次数: 3
Phosphorus lability in a subtropical Acrisol under long-term integrated crop-livestock system: impacts of grazing management and cropping system 长期农牧一体化系统下亚热带阿克里索地区磷的不稳定性:放牧管理和种植制度的影响
IF 1.7 4区 农林科学 Q3 SOIL SCIENCE Pub Date : 2022-01-01 DOI: 10.36783/18069657rbcs20220066
Julia de Mello Assis, Luciano Pinzon Brauwers, Lóren Pacheco Duarte, Gian Ghisleni, T. Tiecher, P. Carvalho, C. Bremm, E. D. Souza, A. Martins
: Studies on lability of soil phosphorus (P) under integrated crop-livestock systems (ICLS) are still scarce, especially for deep soil layers (more than 0.20 m depth) and different managements in the crop and livestock phase. Distinct management in these phases may lead to a different distribution of soil P pools according to its lability (labile, moderately labile, less labile and residual) and, consequently, the P availability for plant nutrition. This study aimed to determine the soil P pools, by P fractionation and its distribution in lability classes. In a long-term ICLS experiment of grain and sheep production established in 2003, in Southern Brazil, we sampled in 2017 the 0.00-0.05, 0.05-0.10, 0.10-0.20, 0.20-0.26, 0.26-0.30 and 0.30-0.40 m layers of a Red Dystrophic Acrisol ( Argissolo Vermelho distrófico ) under two cropping systems in the summer (soybean/corn rotation and soybean/soybean succession), two grazing intensities (moderate and low) and two methods (continuous and rotational) in winter. Fractionation of P consisted of sequential extractions with anionic exchange resin, NaHCO 3 0.5 mol L -1 , NaOH 0.1 mol L -1 , HCl 1 mol L -1 , and NaOH 0.5 mol L -1 . The fractions were grouped in four different pools: labile, moderated labile, less labile and residual P. The soybean/soybean succession increased the labile pool of soil P in the 0.00-0.10 m layer compared to the soybean/corn rotation, regardless of the management of the livestock phase. Meanwhile, the management of the livestock phase also influenced soil P lability, regardless of the management of the crop phase. Low grazing intensity increased the levels of labile soil P in the 0.00-0.05 m layer, in comparison with the moderate grazing intensity and regardless of the grazing method. Grazing methods did not impact the soil P lability or content. The greater soil P availability in the soybean/soybean succession can be attributed to the higher quality (low carbon/nitrogen ratio) of the residue, while in the low grazing intensity to the higher forage dry matter production. Such management benefits nutrient cycling and consequently the P availability to the plants, being important to decrease production costs with the reduction and/or greater use efficiency of phosphate fertilizers.
对农牧一体化系统下土壤磷稳定性的研究仍然很少,特别是对深层(深度大于0.20 m)和农牧阶段不同管理的土壤磷稳定性研究较少。不同阶段的不同管理可能导致土壤磷库根据其不稳定性(不稳定、中等不稳定、不太稳定和剩余)的不同分布,从而导致植物营养磷的有效性。本研究旨在通过磷的分异及其在不稳定等级中的分布来确定土壤磷库。在2003年建立的巴西南部粮食和绵羊生产长期ICLS试验中,我们于2017年在两种夏季种植制度(大豆/玉米轮作和大豆/大豆演替)、两种放牧强度(中等和低)和两种冬季放牧方式(连续和轮作)下,对一种红色营养不良的阿基索(Argissolo Vermelho distrófico)进行了0.000 -0.05、0.05-0.10、0.10-0.20、0.20-0.26、0.26-0.30和0.30-0.40 m层的取样。P的分馏采用阴离子交换树脂、nahco3 0.5 mol L -1、NaOH 0.1 mol L -1、HCl 1 mol L -1和NaOH 0.5 mol L -1进行顺序萃取。结果表明,与大豆/玉米轮作相比,大豆/大豆轮作增加了0.00m ~ 0.10 m土层土壤磷的稳定库,且无论畜牧期管理如何。与此同时,无论作物期管理如何,牲畜期管理也会影响土壤磷弹性。与中等放牧强度相比,无论何种放牧方式,低放牧强度均能提高0.00m ~ 0.05 m层土壤磷含量。放牧方式对土壤磷的松软性和含量没有影响。大豆/大豆演替过程中土壤磷有效度较高的原因是秸秆质量较高(碳氮比较低),而低放牧强度下土壤磷有效度较高的原因是牧草干物质产量较高。这样的管理有利于养分循环,从而提高植物对磷的利用率,这对于通过减少和/或提高磷肥的使用效率来降低生产成本非常重要。
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引用次数: 1
CAMA DE AVIÁRIO NO CRESCIMENTO DE PLANTAS DE RÚCULA E OCORRÊNCIA DA HÉRNIA DAS CRUCÍFERAS 鸟床对火箭植物生长和十字花科疝发生的影响
IF 1.7 4区 农林科学 Q3 SOIL SCIENCE Pub Date : 2022-01-01 DOI: 10.29327/siacs2021.409639
Caio Soares Diniz, Laura Carine Candido Diniz Cruz, Carlos Antônio dos Santos, Camila Da Costa Barros de Souza, Nelson Moura Brasil do Amaral Sobrinho, Margarida Goréte Ferreira do Carmo
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引用次数: 0
TRANSFERÊNCIA DA TECNOLOGIA ILPF COMO ESTRATÉGIA PARA A MINIMIZAÇÃO DA DEGRADAÇÃO DO SOLO 转让ILPF技术作为尽量减少土壤退化的战略
IF 1.7 4区 农林科学 Q3 SOIL SCIENCE Pub Date : 2022-01-01 DOI: 10.29327/siacs2021.406665
Liliane Moreira Nery, Darllan Collins da Cunha e Silva, Debora Zumkeller Sabonaro
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引用次数: 0
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Revista Brasileira De Ciencia Do Solo
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