Department of Agricultural Engineering, College of Food and Agriculture Sciences, King Saud University, Riyadh, Saudi Arabia.
Department of Agricultural & Biosystems Engineering, Faculty of Agricultural, Alexandria University, Alexandria, Egypt.
J Air Waste Manag Assoc. 2023 Sep;73(9):695-704. doi: 10.1080/10962247.2023.2235326. Epub 2023 Oct 17.
Huge quantities of agricultural waste are available annually in Saudi Arabia, which are not well exploited, leading to large environmental pollution and health problems. The use of different proportions of tomato waste compost (TWC) mixed with commercial peat-moss as a natural, economical, cheap and environmentally friendly fertilizer for fertilizing vegetables is very important, therefore, this study is concerned with investigating and evaluating the dry matter content (DM) and the accumulated heavy metal contents (HMs) in the root and leaf seedlings tissues of cucumber and summer squash plants as a result of using this fertilizer. Five ratios of mixtures (vermiculite: peat moss: TWC by weight) used in the experiment, and the TWC in the mixture represents 0, 5, 10, 15 and 20% (by wieght). The results indicated that, the DM contents in the root and leaf tissues were relatively close between cucumber and summer squash seedlings. However, they were higher in the root than in leaf tissues, particularly under 20% TWC. A TWC application ratio of 20% reduced concentrations of the most HMs in the two vegetable species seedlings due to high EC and pH levels. The amounts of HMs in vegetable species were not high, which proves the that transfer of HMs from the TWC substrate to the seedlings is determined chiefly by metal bioavailability and by a vegetable species. DM, mineral and nutritional quality of vegetable seedlings showed that substrates containing 5% and 10% TWC appeared to be the most suitable growing medium for economic vegetable seedlings; and it is recommended for use in the nursery production. : The idea of this research revolves around the use of different proportions of tomato waste compost in fertilizing cucumber and summer squash seedlings and investigate the effect of this compost on dry matter (DM) and heavy metal (HMs) contents in the root and leaf tissues of the seedlings, and fruit quality of cucumber and summer squash plants.
沙特阿拉伯每年都有大量的农业废弃物，但未得到充分利用，导致严重的环境污染和健康问题。因此，使用不同比例的番茄废弃物堆肥（TWC）与商业泥炭藓混合作为一种天然、经济、廉价且环保的肥料来为蔬菜施肥非常重要。因此，本研究关注的是研究和评估使用这种肥料对黄瓜和夏南瓜植物幼苗根和叶组织中的干物质（DM）含量和积累的重金属（HM）含量的影响。实验中使用了 5 种混合物（按重量计：蛭石：泥炭藓：TWC）的比例，混合物中的 TWC 分别代表 0、5、10、15 和 20%（按重量计）。结果表明，黄瓜和夏南瓜幼苗的根和叶组织中的 DM 含量相对接近。然而，在根组织中的含量高于叶组织中的含量，尤其是在 TWC 为 20%时。TWC 应用比例为 20%会由于高 EC 和 pH 值而降低两种蔬菜幼苗中大多数 HM 的浓度。由于 HM 含量不高，这证明了 HM 从 TWC 基质向幼苗的转移主要取决于金属生物利用度和蔬菜种类。蔬菜幼苗的 DM、矿物质和营养质量表明，含有 5%和 10%TWC 的基质似乎是最适合经济蔬菜幼苗生长的培养基，建议在苗圃生产中使用。本研究的核心思想是使用不同比例的番茄废弃物堆肥来为黄瓜和夏南瓜幼苗施肥，并研究这种堆肥对幼苗根和叶组织中的干物质（DM）和重金属（HM）含量以及黄瓜和夏南瓜植物果实质量的影响。
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