All of these metrics can be collected in a standard series of pulmonary function tests (PFTs) in which you breathe into tube in a machine under the instructions of lab technicians. The machine includes flow rate sensors and gas analyzers and provides the results of tests in easy-to-read grap...
(CGR) under low N input are lacking in frequently defoliated pastures. This study aimed to understand the significance of PFTs for productivity and N uptake in permanent grasslands by measuring dynamics in tiller density (TD), tiller weight (TW), leaf weight ratio (LWR), leaf area index (...