Five years of grain production on deep placement treatments of phosphorus and potassium in scrub soils—Dysart

This project is gathering data from these trial sites to ascertain whether the one-off application of either P, K or sulfur (S) placed in these deeper more depleted layers can provide a grain yield benefit and whether that benefit can be maintained over several years.本项目正从各试验站点采集数据，以探明单次将磷（P）、钾（K）或硫（S）施入深度更深且养分更为匮乏的土层，是否可带来谷物增产效益，以及该效益能否在多年间持续维持。