枯草芽孢杆菌处理及种植深度对藏红花生长的影响绿色屋顶系统中的生产

IF 1.5 3区 农林科学 Q2 HORTICULTURE Hortscience Pub Date : 2023-10-01 DOI:10.21273/hortsci17220-23
Pradip Poudel, Leigh Whittinghill, Hideka Kobayashi, Shawn Lucas
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引用次数: 0

摘要

考虑到当前的城市化背景和对绿色屋顶系统的兴趣日益浓厚,在绿色屋顶培养基中种植藏红花等高价值作物可能是利用作物和绿色屋顶系统的好处的机会;绿色屋顶介质的排水、透气性和沙状质地使其适合生产藏红花,而藏红花的市场价格可以使绿色屋顶生产具有商业可行性。多种因素,包括植物病害和种植深度,都可能影响藏红花的产量。因此,本研究以枯草芽孢杆菌(Bacillus subtilis)为原料,评价了不同种植深度和不同杀菌剂处理对绿色屋顶藏红花产量的影响。采用完全随机因子区组设计,以种植深度(10 cm和15 cm)和枯草芽孢杆菌QST 713生物杀菌剂处理(未处理对照,15.6 × 10 9 cfu/L和31.2 × 10 9 cfu/L)为自变量。2019年,在采收过程中计算鲜花产量、新鲜柱头产量和干柱头产量,2020年收集花数、花被片长度和宽度、柱头长度和采收时间的额外数据。采用方差分析(ANOVA)对所有变量进行分析,以种植深度和生物杀菌剂处理为固定效应,以r为固定效应,2019年10 cm种植深度下鲜柱头产量和干柱头产量较高。2020年的结果与此相反,15 cm种植深度的花数、鲜花产量、鲜柱头产量、干柱头产量和采收期均高于10 cm种植深度。在2020年,枯草芽孢杆菌处理没有影响任何研究变量,但在2019年,较高水平的杀菌剂处理导致鲜花产量和干柱头产量下降。杀菌剂处理和种植深度对花被片长度、宽度和柱头长度均无显著影响。本研究表明,在许多藏红花产区和国家,屋顶绿化种植藏红花是可行的,产量甚至高于田间生产。此外,结果表明,根据目标,浅层种植可能适合一年生生产,而深层种植可能适合多年生生产。我们的研究结果证明了在绿色屋顶系统中生产藏红花的可行性,并建议进一步研究以制定最佳管理实践。
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Evaluating the Effects of Bacillus subtilis Treatment and Planting Depth on Saffron (Crocus sativus L.) Production in a Green Roof System
Given the current urbanization context and rising interest in green roof systems, growing a high-value crop such as saffron crocus in green roof medium could be an opportunity to use the benefits of both the crop and the green roof system; the drainage, aeration, and sand-like texture of green roof media make it suited for saffron production, and the saffron market price could make green roof production commercially viable. Various factors, including plant diseases and planting depth, could affect saffron production. Therefore, this research was conducted to evaluate the effects of planting depth and biofungicide treatments using Bacillus subtilis on saffron production in a green roof system. A completely randomized factorial block design was used with planting depth (10 cm and 15 cm) and B. subtilis strain QST 713 biofungicide treatments (an untreated control, 15.6 × 10 9 cfu/L, and 31.2 × 10 9 cfu/L) as independent variables. In 2019, fresh flower yield, fresh stigma yield, and dry stigma yield were calculated during harvesting, and additional data on flower number, tepal length and width, stigma length, and harvest time were collected in 2020. All variables were analyzed using analysis of variance (ANOVA) with planting depth and biofungicide treatments as fixed effects using R. Fresh stigma yield and dry stigma yield were higher in the 10-cm planting depth in 2019. Results were opposite in 2020: flower number, fresh flower yield, fresh stigma yield, dry stigma yield, and harvest time were higher in the 15-cm planting depth than the 10-cm planting depth. B. subtilis treatments did not affect any studied variable in 2020, but in 2019, the higher level of fungicide treatment resulted in lower fresh flower yield and dry stigma yield. There was no effect of biofungicide treatment and planting depth on tepal length, tepal width, and stigma length in both years. This study showed that growing saffron crocus on green roofs is feasible and even resulted in higher yield than field production in many saffron-producing regions and countries. In addition, results indicated that shallow planting might be suitable for annual production, whereas deeper planting could be ideal for perennial production based on the objective. Our findings demonstrated the feasibility of saffron production in the green roof system and suggest further research to develop best management practices.
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来源期刊
Hortscience
Hortscience 农林科学-园艺
CiteScore
3.00
自引率
10.50%
发文量
224
审稿时长
3 months
期刊介绍: HortScience publishes horticultural information of interest to a broad array of horticulturists. Its goals are to apprise horticultural scientists and others interested in horticulture of scientific and industry developments and of significant research, education, or extension findings or methods.
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