Effects of irrigation and fertilization practice on soil nematode communities in arable land

Ewald, Martin; Rusch, Dana; Rißmann, Cornelia; Trost, Benjamin; Theuerl, Susanne; Rueß, Liliane

doi:10.1016/j.apsoil.2022.104546

Cited by 8 publications

(6 citation statements)

References 62 publications

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“…Compared with the traditional surface drip irrigation technologies, aerated underground drip irrigation provides sufficient oxygen for a series of physiological actions of plant roots and the phytoedaphon [4], which usually contribute to the improvement of soil nutrient use efficiency [2,[6][7][8][9] and the rootzone soil microenvironment [10,11], an increase in soil fertility [10,12] and crop production [8,9], and the facilitation of plant growth and fruit/grain development. Additionally, the mixing of water, fertilizer, and air both in time and space can be achieved through underground drip irrigation systems [13,14], which is more favorable for quick-acting nutrient release in the soil [7,10,15], the efficiency improvement of farmland fertilizer use [7], and crop yield increases. The current studies about aerated underground drip irrigation mainly focus on the influences of aeration proportions on crop growth characteristics and soil physical-chemical properties.…”

Section: Introductionmentioning

confidence: 99%

Aeration Alleviated the Adverse Effects of Nitrogen Topdressing Reduction on Tomato Root Vigor, Photosynthetic Performance, and Fruit Development

Li,

He,

Jin

et al. 2024

Plants

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To explore the compensation effect of aeration on tomato vegetative and reproductive growth in arid and semi-arid areas, a two-year field experiment was conducted with four micro-nano aeration ratios (0%, 5%, 10%, and 15%) and three nitrogen topdressing levels (80, 60, and 40 kg·ha−1) during the tomato growth period in Ningxia, China. The results showed that increasing the aeration ratio in the range of 0–15% was conducive to the enhancement of tomato root vigor (the ability of triphenyltetrazolium chloride to be reduced, 3–104%) and the leaf net photosynthetic rate (14–63%), favorable to the facilitation of plant dry matter accumulation (3–59%) and plant nitrogen accumulation (2–70%), and beneficial to the improvement of tomato yield (12–44%) and fruit quality. Interestingly, since the aeration ratio exceeded 10%, the increase in the aeration ratio showed no significant effects on the single-fruit weight, tomato yield, and fruit quality. Moreover, with aerated underground drip irrigation, properly reducing the traditional nitrogen topdressing level (80 kg·ha−1) by 25% was favorable for enhancing tomato root vigor (5–31%), increasing tomato yield (0.5–9%), and improving fruit soluble solid accumulation (2–5%) and soluble sugar formation (4–9%). Importantly, increasing the aeration ratio by 5% could compensate for the adverse effects of reducing the nitrogen topdressing level by 25% by improving the leaf photosynthetic rate, promoting plant dry matter accumulation, increasing tomato yield, and enhancing the soluble solid and soluble sugar accumulation in tomato fruits. Synthetically considering the decrease in the nitrogen topdressing amount, leading to plant growth promotion, a tomato yield increase, and fruit quality improvement, a favorable nitrogen topdressing level of 60 kg·ha−1 and the corresponding proper aeration ratio of 10% were suggested for tomato underground drip irrigation in the Yinbei Irrigation District of Ningxia.

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Section: Introductionmentioning

confidence: 99%

Aeration Alleviated the Adverse Effects of Nitrogen Topdressing Reduction on Tomato Root Vigor, Photosynthetic Performance, and Fruit Development

Li,

He,

Jin

et al. 2024

Plants

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“…As an alternative, various proxies have been proposed involving soil organismal groups with a manageable level of diversity that not only mirror their own condition, but also reflect the condition of their main food source(s). In this respect, protists, single cellular eukaryotes that mainly feed on bacteria and archaea (Geisen et al, 2018), microarthropods, predominantly mites and collembolans that live as fungivores and as predators of soil microfauna (Cortet et al, 2002), and nematodes that use plant roots, bacteria, fungi, and/or microfauna as primary food source (Ewald et al, 2022) should be mentioned.…”

Section: Introductionmentioning

confidence: 99%

“…Microscopic analysis of nematode communities has a few intrinsic limitations. Microscopic nematode identification is labour intensive, requires ample training, and typically only the first 100 to 150 individuals or 10% of the individuals are taken into consideration (Ewald et al, 2022;Quist et al, 2016). Moreover, for many nematode taxa only adult life stages can be identified implying that juveniles often are not taken into consideration.…”

Section: Introductionmentioning

confidence: 99%

A full length SSU rRNA-based workflow for high resolution monitoring of nematode communities reveals direct and indirect responses to plant-based manipulations

Himbeeck,

Cazzaniga,

Elsen

et al. 2023

Preprint

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Agricultural intensification has resulted in a decline of soil biodiversity, and concerns about the deterioration of the biological condition of soils prompted the development of measures to restore soil life. Due to the overwhelming biodiversity of soils, evaluation of such measures is not straightforward, and proxies are used to assess soil health. Because of their trophic diversity, high abundance, and relatively well-characterized ecologies, nematodes are often used as soil health indicators. However, the scarcity of informative morphological characters hampers the upscaling of this proxy. Here we present a community analysis approach that uses nanopore sequencing to generate full-length sequences of small subunit ribosomal DNAs (SSU rDNA). Cover cropping is a common agricultural practice that stimulates soil life, and we mapped the effects of ten cover crop treatments on nematode communities in a field experiment. These analyses included the monitoring of a high impact plant-parasite, Meloidogyne chitwoodi. In total 132 nematode samples were analysed, and 65 nematode taxa were detected, mostly at species level, including representatives of all trophic groups. As a validation, all samples were analysed microscopically for M. chitwoodi, and comparison of count and DNA read data revealed highly similar results. Treatments did not only affect plant-parasitic nematodes, but also free-living nematodes in a cover crop-specific manner. Free-living nematodes from the same trophic group, and even congeneric species, responded differentially to plant-mediated manipulations of the soil microbiome. Hence, nanopore-based SSU rDNA sequencing could facilitate a substantial refinement of the use of nematodes as indicators for soil health.

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“…Based on the development of drip irrigation systems, water-fertilizer-air-coupling drip irrigation technology is an agricultural engineering technology that saves water and fertilizer, produces high yields and is highly efficient, which enables the synchronization of water and nutrients in time and space [9][10][11]. This system is a new irrigation technique that is based on water-fertilizer-air-coupling drip irrigation and uses a venturi air jet to transport oxygen (or an oxygenated substance) through drip irrigation water to flow to the plant root zone.…”

Section: Introductionmentioning

confidence: 99%

Effects of Water-Fertilizer-Air-Coupling Drip Irrigation on Soil Health Status: Soil Aeration, Enzyme Activities and Microbial Biomass

Liu

Zhang

et al. 2022

Agronomy

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In order to investigate the effects of water-fertilizer-air-coupling drip irrigation on soil health status, including soil aeration (SA), enzyme activity (EA) and microbial biomass (MB), and its response relationship, this glasshouse experiment was conducted using tomato as the test crop, and we designed two fertilization gradients of 135 and 180 kg N·ha−1, two irrigation levels of 0.6-fold and 1.0-fold of the crop-pan coefficient, and two aeration treatments of 5 and 15 mg·L−1 for the three-factor and two-level completely randomized block experiment. The effects of soil dissolved-oxygen concentration, oxygen diffusion rate, soil respiration rate, soil urease, catalase, phosphatase activities and soil microbial biomass were systematically monitored and analyzed in the middle and at the end of crop growth. A structural equation model was used to comprehensively analyze the response relationship among relevant influencing factors. The results showed that coupled drip irrigation increased the soil’s dissolved oxygen, oxygen diffusion rate and soil respiration rate by 14.05%, 30.14% and 53.74%, respectively. Soil urease, catalase and phosphatase activities increased by 22.83%, 93.01% and 61.35%, respectively. The biomass of bacteria, fungi and actinomycetes increased by 49.06%, 50.18% and 20.39%, respectively. The results of a structural equation model analysis showed that water-fertilizer-air-coupling drip irrigation could effectively improve soil health status, and the descending order of influence was MB > EA > SA. This study provides scientific knowledge to reveal the improvement of soil health status by water-fertilizer-air-coupling drip irrigation.

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Effects of irrigation and fertilization practice on soil nematode communities in arable land

Cited by 8 publications

References 62 publications

Aeration Alleviated the Adverse Effects of Nitrogen Topdressing Reduction on Tomato Root Vigor, Photosynthetic Performance, and Fruit Development

Aeration Alleviated the Adverse Effects of Nitrogen Topdressing Reduction on Tomato Root Vigor, Photosynthetic Performance, and Fruit Development

A full length SSU rRNA-based workflow for high resolution monitoring of nematode communities reveals direct and indirect responses to plant-based manipulations

Effects of Water-Fertilizer-Air-Coupling Drip Irrigation on Soil Health Status: Soil Aeration, Enzyme Activities and Microbial Biomass

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