Boudjabi Sonia, Chenchouni Haroun
Department of Nature and Life Sciences, University of Tebessa, Tebessa, 12002, Algeria.
Laboratory Water and Environment "LEE", University of Tebessa, Tebessa, 12002, Algeria.
Heliyon. 2023 Mar 20;9(4):e14615. doi: 10.1016/j.heliyon.2023.e14615. eCollection 2023 Apr.
With soil fertility loss reached a critical state in arid and semi-arid regions, farmers are constrained to use mineral fertilizers, which are costly, non-eco-friendly and less effective in improving soil fertility than organic fertilizers such as dewatered sewage sludge (SS) and poultry manure (PM). In this regard, the current study aimed to highlight through experiments the positive effect of SS and PM applications on soil fertility and durum wheat growth. It targeted to demonstrate the safe and wise use of organic fertilization while assessing heavy metals in both soil and plant. The experiment was carried out in two batches of thirty-two pots, one for each treatment (SS and PM), in addition to the control with no fertilization. SS and PM were applied separately in three doses (D1 = 50 g, D2 = 100 g, and D3 = 200 g DM fertilizer/pot). The applications of both SS and PM induced a significant increase in plant-available phosphorus, organic matter, nitrates, moisture and electrical conductivity in soil, where these improvements were higher in PM compared to SS treatment. A significant accumulation of proline associated with an increase in biomass that were both proportional with fertilizer dose levels. Our findings revealed a loss in relative water content and leaf area of the plant. Correlations showed several significant relationships between soil parameters studied. The dose D2 of each fertilizer was the most efficient to improving both soil properties and plant components. Plant zinc concentration increased significantly with increase in soil zinc in PM amendments, however it decreased in SS. These relationships were not significant in copper for the two fertilizers. Both SS and PM improved soil fertility and plant growth compared to the control, thus this practice is a promising solution to tackle soil fertility loss and low production in drylands.
在干旱和半干旱地区，土壤肥力丧失已达到临界状态，农民被迫使用矿物肥料，而矿物肥料成本高昂、不环保，且在改善土壤肥力方面不如脱水污水污泥（SS）和家禽粪便（PM）等有机肥料有效。在这方面，本研究旨在通过实验突出施用SS和PM对土壤肥力和硬粒小麦生长的积极影响。其目标是在评估土壤和植物中的重金属时，证明有机施肥的安全和明智使用。实验分两批进行，每批32个花盆，每种处理（SS和PM）各一批，此外还有不施肥的对照。SS和PM分别以三种剂量施用（D1 = 50克，D2 = 100克，D3 = 200克干物质肥料/花盆）。施用SS和PM均显著增加了土壤中植物有效磷、有机质、硝酸盐、水分和电导率，其中与SS处理相比，PM处理的这些改善更为显著。脯氨酸的显著积累与生物量的增加相关，二者均与肥料剂量水平成正比。我们的研究结果显示植物的相对含水量和叶面积有所下降。相关性表明所研究的土壤参数之间存在若干显著关系。每种肥料的D2剂量在改善土壤性质和植物成分方面最为有效。在PM改良剂中，植物锌浓度随土壤锌含量的增加而显著增加，但在SS中则降低。两种肥料在铜方面的这些关系不显著。与对照相比，SS和PM均改善了土壤肥力和植物生长，因此这种做法是解决旱地土壤肥力丧失和低产问题的一个有前景的解决方案。
