Outbakat M Barka, Bouray Moussa, Choukr-Allah Redouane, El Gharous Mohamed, El Omari Kamal, El Mejahed Khalil
Agricultural Innovation and Technology Transfer Center (AITTC), Mohammed VI Polytechnic University, Ben Guerir 43150, Morocco.
College of Sustainable Agriculture and Environmental Sciences (CAES), Mohammed VI Polytechnic University, Ben Guerir 43150, Morocco.
Plants (Basel). 2024 Dec 25;14(1):16. doi: 10.3390/plants14010016.
According to the FAO, 828 million people were facing acute food insecurity in 2021. Fertilization is a critical input factor in crop production and food security achievement. Therefore, fertilization is a critical input factor in crop production and food security achievement. However, there is room for improvement in the application of fertilizers in certain regions. Thus, new fertilizers with a relatively low cost could enhance farmers' access to these essential inputs. Phosphogypsum (PG) is used as fertilizer because it contains many nutrients essential for plant growth, including calcium, sulfur, and phosphorus. A two-year field experiment was conducted using two Moroccan PG products (PG1 and PG2, obtained from two different industrial sites), applied at four rates (0, 1.5, 3, and 4.5 t/ha). The aim was to assess the impact of PG source and rate on barley crops, including yield component, nutrients uptake, and heavy metals content. The study's findings revealed that as the rate of PG application increased, there were significant enhancements in the number of spikes, tillers, grains, total biomass, grain yield, and thousand-grain weight. In fact, when compared to the control, the application of 1.5, 3, and 4.5 t/ha of PG led to a remarkable increase in grain yield by 21%, 34%, and 39%, respectively. Furthermore, the uptake of nutrients (N, P, K, Ca, Mg, and S) by the shoots and grains was significantly influenced by the PG application rates, with higher rates resulting in greater nutrient uptake. Notably, the application of PG had no discernible impact on the heavy metal content in shoots, grains, or soil.
根据联合国粮食及农业组织（FAO）的数据，2021年有8.28亿人面临严重粮食不安全问题。施肥是作物生产和实现粮食安全的关键投入因素。因此，施肥是作物生产和实现粮食安全的关键投入因素。然而，某些地区在肥料施用方面仍有改进空间。因此，成本相对较低的新型肥料可以提高农民获得这些必需投入物的机会。磷石膏（PG）被用作肥料，因为它含有许多植物生长必需的养分，包括钙、硫和磷。使用两种摩洛哥磷石膏产品（PG1和PG2，分别来自两个不同的工业场所）进行了为期两年的田间试验，施用量为四个水平（0、1.5、3和4.5吨/公顷）。目的是评估磷石膏来源和施用量对大麦作物的影响，包括产量构成因素、养分吸收和重金属含量。研究结果表明，随着磷石膏施用量的增加，穗数、分蘖数、粒数、总生物量、籽粒产量和千粒重均有显著提高。事实上，与对照相比，施用1.5、3和4.5吨/公顷的磷石膏分别使籽粒产量显著提高了21%、34%和39%。此外，地上部和籽粒对养分（氮、磷、钾、钙、镁和硫）的吸收受磷石膏施用量的显著影响，施用量越高，养分吸收量越大。值得注意的是，施用磷石膏对地上部、籽粒或土壤中的重金属含量没有明显影响。
