Nicholas Larissa, Devine Aisling, Robertson Iain, Mabbett Ian
Department of Chemistry, Faculty of Science and Engineering, Swansea University, Swansea, Wales SA2 8PP UK.
Department of Biosciences, Faculty of Science and Engineering, Swansea University, Swansea, Wales SA2 8PP UK.
J Soil Sci Plant Nutr. 2024;24(4):6775-6781. doi: 10.1007/s42729-024-02003-5. Epub 2024 Nov 6.
Continuous lighting (CL) has the potential to increase crop yield in greenhouse production. Tomato plants, however, when exposed to CL develop inter-vascular chlorosis, a leaf injury which causes a reduction in chlorophyll content and necrosis. The application of biochar can reduce physiological stress in plants, we examine if biochar also reduces necrosis in tomatoes when grown under CL. Faecal sludge biochar was applied to an acidic soil to examine plant growth and yield in Micro-Tom tomato plants grown under continuous light. We examined soil and plant growth properties of three soil application treatments: a control soil, biochar treatment (4%w/w) (Biochar), and a combined biochar (2% w/w) and fertilizer (2% w/w) treatment (Biochar + Fert). Faecal sludge biochar addition produced plant heights 216% greater than control and above ground biomass 583% greater than control. The biochar and fertilizer treatment group produced a 487% increase in leaf number compared to biochar. The combined biochar and fertilizer treatment produced a 398% increase in dried above ground biomass and a 177% increase in dried fruit yield compared with biochar. Plants in the biochar and fertilizer treatment group showed less visual evidence of continuous light induced leaf injury.Biochar addition did not limit continuous light induced leaf chlorosis whereas combined biochar and fertilizer treatment resulted in a significant reduction in leaf injury and death. Overall, the application of biochar and biochar and fertilizer combined increased crop yield.
The online version contains supplementary material available at 10.1007/s42729-024-02003-5.
持续光照（CL）有潜力提高温室作物产量。然而，番茄植株在持续光照下会出现维管束间黄化，这是一种叶片损伤，会导致叶绿素含量降低和坏死。生物炭的施用可以减轻植物的生理压力，我们研究了在持续光照下生长时生物炭是否也能减少番茄的坏死现象。将粪便污泥生物炭施用于酸性土壤，以研究在持续光照下生长的微型番茄植株的生长和产量。我们研究了三种土壤施用处理的土壤和植物生长特性：对照土壤、生物炭处理（4%重量/重量）（生物炭）以及生物炭（2%重量/重量）和肥料（2%重量/重量）组合处理（生物炭+肥料）。添加粪便污泥生物炭使植株高度比对照高216%，地上生物量比对照高583%。与生物炭处理组相比，生物炭和肥料处理组的叶片数量增加了487%。与生物炭处理相比，生物炭和肥料组合处理使地上干生物量增加了398%，干果产量增加了177%。生物炭和肥料处理组的植株在持续光照诱导的叶片损伤方面视觉证据较少。添加生物炭并未限制持续光照诱导的叶片黄化，而生物炭和肥料组合处理则显著减少了叶片损伤和死亡。总体而言，生物炭以及生物炭与肥料组合的施用提高了作物产量。
在线版本包含可在10.1007/s42729-024-02003-5获取的补充材料。
