Department of Biological Sciences, University of Sargodha, Sargodha 40100, Pakistan.
Biol Trace Elem Res. 2011 Sep;142(3):465-70. doi: 10.1007/s12011-010-8808-9. Epub 2010 Aug 24.
The present investigation was carried out to determine the molybdenum (Mo) status of soil and forage at the Livestock Experimental Station, Khizer abad, Sargodha, Pakistan. This site falls under semiarid climatic conditions. Soil and forage samples were collected on a monthly basis during the winter season (from October through January) and analyzed after wet digestion to determine the effect of sampling intervals on Mo content as well as its transfer from soil to forage during the whole study period. The effect of sampling intervals on soil Mo content was found to be highly significant, but in contrast, this effect on forage Mo was nonsignificant. The Mo content of soil was found to be highly sufficient to meet the requirement of forage crops, whereas those of forage at the borderline of the ruminant requirement is insufficient. It is expected that with time, further depletion of Mo in the pasture soil due to interaction with Cu and other antagonistic elements may take place, which could finally lower Mo levels in the forage being used for rearing livestock. Thus, at some stage in the future, addition of standard fertilizers enriched with Mo to the soils may be required at the livestock farm.
本研究旨在确定巴基斯坦萨戈达的 Khizerabad 家畜实验站的土壤和草料中的钼（Mo）状况。该地区属于半干旱气候条件。在冬季（10 月至 1 月）期间，每月采集土壤和草料样本，并进行湿法消化分析，以确定采样间隔对 Mo 含量的影响，以及整个研究期间 Mo 从土壤向草料的转移情况。采样间隔对土壤 Mo 含量的影响具有高度显著性，但相反，对草料 Mo 的影响不显著。土壤 Mo 含量被认为非常充足，足以满足饲料作物的需求，而草料的 Mo 含量处于反刍动物需求的边缘，不足。预计随着时间的推移，由于与 Cu 和其他拮抗元素的相互作用，牧场土壤中的 Mo 可能会进一步耗尽，这最终可能会降低用于饲养牲畜的草料中的 Mo 水平。因此，在未来的某个阶段，家畜养殖场可能需要向土壤中添加富含 Mo 的标准肥料。
