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Cowpeat as a substitute for peat in container substrates for foliage plant propagation.

机译：Cowpeat代替泥炭在容器基质中繁殖叶子植物。

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This study evaluated the potential for using cowpeat, a composted dairy manure, as a component of container substrates for foliage plant propagation. Using a commercial formulation (20% perlite and 20% vermiculite with 60% Canadian or Florida peat based on volume) as controls, peat was replaced by cowpeat at 10% increments up to 60%, which resulted in a total of 14 substrates. Physical and chemical properties such as air space, bulk density, container capacity, total porosity, pH, carbon-to-nitrogen ratio, and cation exchange capacity of the cowpeat-substituted substrates were largely similar to those of the respective control. However, the electrical conductivity (EC) increased with the increased volume of cowpeat. The 14 substrates were used for rooting single-node cuttings of golden pothos (Epipremnum aureum) and heartleaf philodendron (Philodendron scandens ssp. oxycardium) and three-node cuttings of 'Florida Spire' fig (Ficus benjamina) and germinating seeds of sprenger asparagus (Asparagus densiflorus) in a shaded greenhouse. All cuttings rooted in the 14 substrates, and the resultant shoot and root dry weights of golden pothos and 'Florida Spire' fig 2 months after rooting did not significantly vary across seven Canadian peat- or Florida peat-based substrates. Shoot dry weights of heartleaf philodendron were also similar across substrates, but the root dry weight produced in the Canadian peat-based control substrate was much greater than that produced in the substrate containing 60% cowpeat. Root dry weight and root length produced in the Florida peat-based control substrate were also significantly greater than those produced in substrates substituted by 60% cowpeat. These results may indicate that cuttings of golden pothos and 'Florida Spire' fig are more tolerant of higher EC than those of heartleaf philodendron, as the substrate with 60% cowpeat had EC >=4.16 dS.m-1. Seed germination rates of sprenger asparagus from cowpeat-substituted Canadian peat-based substrates were greater than or comparable to those of the control substrate. Seed germination rates were similar across the seven Florida peat-based substrates. The root-to-shoot ratios of seedlings germinated from both control substrates were significantly greater than those germinated from substrates substituted by cowpeat. This difference could be partially explained by the higher nutrient content in cowpeat-substituted substrates where shoot growth was favored over root growth. Propagation is a critical stage in commercial production of containerized plants. The success in using up to 60% cowpeat in rooting and seed germination substrates may suggest that cowpeat could be an alternative to peat for foliage plant propagation.
机译：这项研究评估了使用牛粪（一种堆肥的奶牛粪肥）作为叶子植物繁殖的容器基质成分的潜力。使用市售配方（20％珍珠岩和20％ul石，其中60％的加拿大或佛罗里达州的泥炭为体​​积）作为泥煤，以10％的增量以60％的牛cow代替泥炭，总共产生14种底物。 the取代的底物的物理和化学性质，如空气空间，堆积密度，容器容量，总孔隙率，pH，碳氮比和阳离子交换容量，与各自的对照很大程度上相似。但是，电导率（EC）随着牛pe体积的增加而增加。这14种基质被用于生根金色pothos（ Epipremnum aureum ）和心叶爱树木（ Philodendron scandens ssp。 oxycardium ）的生根。在阴凉的温室中，将三棵无花果无花果（Florida Spire）无花果（ Ficus benjamina ）和发芽的sprenger芦笋（ Desparagus densiflorus ）种子切成薄片。所有插条生根于14种基质，生根后2个月的金色pothos和'Florida Spire'无花果的枝条和根的干重在七个基于加拿大泥炭或佛罗里达泥炭的基质中没有显着差异。在不同的基质上，心叶爱树木的茎干重量也相似，但是在加拿大基于泥炭的对照基质中产生的根部干重比在含有60％牛the的基质中产生的根部干重大得多。在以佛罗里达州泥炭为基础的对照基质中产生的根干重和根长也显着大于用60％牛pe替代的基质中产生的根干重和根长。这些结果可能表明，与心叶爱乐植物相比，金色pothos和'Florida Spire'无花果的插片对EC的耐受性更高，因为含60％牛cow的基质的EC> = 4.16 dS.m -1 。牛cow取代的加拿大泥炭基基质中的芦笋种子的发芽率大于或与对照基质相当。七种基于佛罗里达泥炭的基质的种子发芽率相似。从两种对照基质中萌发的幼苗的根冠比均显着大于由牛cow替代基质中发芽的幼苗。这种差异可以部分解释为用cow取代的基质中较高的养分含量，在这种基质中，芽的生长优于根的生长。繁殖是集装箱植物商业化生产的关键阶段。在生根和种子发芽基质中成功使用高达60％的牛pe，这可能表明牛pe可以替代泥炭来种植观叶植物。

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