Please take a look at this informative, published paper in which a group looked at the physiological effect of foliar, and soil, calcinated bone fertilisation. They used an LCpro-SD and CCM200plus to measure photosynthesis, transpiration and chlorophyll content. https://www.mdpi.com/2076-3417/10/7/2579 For product details see https://www.adc.co.uk/product-category/plant/