Anaerobic digestate as peat substitute and fertiliser in pot production of basil

IF 1.4 4区 农林科学 Q3 AGRONOMY Biological Agriculture & Horticulture Pub Date : 2022-04-13 DOI:10.1080/01448765.2022.2064232
H. Asp, K. Bergstrand, S. Caspersen, M. Hultberg
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引用次数: 3

Abstract

ABSTRACT The common use of peat as a growing medium for plant production is questioned due to the negative effects on the environment and climate. Therefore, it is of great importance to find substitutes for peat with similar positive properties that have made peat one of the most important substrates in the horticultural sector. Production of biogas from organic residues is a valuable process, producing both energy and a residue, anaerobic digestate (AD), with a high content of plant nutrients. In this study, peat was partly substituted with AD of plant material origin up to 80% in a growing substrate for basil (Ocimum basilicum). Germination, yield and plant nutrient content were measured as well as chemical and physical properties of the growing media. The results showed that with 50% substitution of peat the growth in the AD/peat mix gave the same yield as for the fertilised peat on its own. No toxic or deficiency symptoms could be seen in the 50% mix. The important physical properties of the substrate were similar in peat and AD/peat mixes. However, the water-holding capacity was slightly decreased when part of the peat was substituted.
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厌氧消化物作为泥炭替代物和肥料在罗勒盆栽生产中的应用
摘要泥炭作为植物生产的生长介质,由于其对环境和气候的负面影响,其普遍使用受到质疑。因此,寻找具有类似积极特性的泥炭替代品非常重要,这些特性使泥炭成为园艺部门最重要的基质之一。从有机残留物中生产沼气是一个有价值的过程,既能产生能量,又能产生富含植物营养物质的残留物,即厌氧消化物(AD)。在本研究中,在罗勒(Ocimum basilicum)的生长基质中,泥炭被植物材料来源的AD部分取代,AD高达80%。测定了发芽率、产量和植物营养成分以及生长介质的化学和物理特性。结果表明,在50%的泥炭替代率下,AD/泥炭混合物中的生长产生的产量与施肥泥炭本身的产量相同。在50%的混合物中没有发现毒性或缺乏症状。基质的重要物理性质在泥炭和AD/泥炭混合物中相似。然而,当部分泥炭被取代时,持水能力略有下降。
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来源期刊
Biological Agriculture & Horticulture
Biological Agriculture & Horticulture 农林科学-农艺学
CiteScore
3.30
自引率
6.70%
发文量
18
审稿时长
>36 weeks
期刊介绍: Biological Agriculture & Horticulture aims to act as the central focus for a wide range of studies into alternative systems of husbandry, and particularly the biological or organic approach to food production. The Journal publishes work of a sound scientific or economic nature related to any aspect of biological husbandry in agriculture, horticulture and forestry in both temperate and tropical conditions, including energy and water utilization, and environmental impact.
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