As growers start thinking about second nitrogen applications, in this episode, Ken Rundle talks to Natalie Wood, Yara's UK Arable Agronomist to discuss how tools such as the N-Tester, Atfarm and N-Sensor can be used to optimise the efficiency of nitrogen applications.  Natalie also discusses how tissue testing can be used to identify micronutrient deficiencies which can also influence nitrogen use efficiency.