Field heterogeneity

Protocols should require documentation of actual application practices and times. Samples of applied pesticides should be collected to document application rates to study sites. The test substance must be applied with typical equipment used for the crop, and the application must be made in accordance with the labeled use. Another variable that impacts such studies is the fact that most landowners have their own application equipment, which increases the variance in actual application rates among fields and may cause differential intra-field heterogeneity in application rates. 

An additional and important relaxation time constant is T, which characterises a faster decay of the magnetisation along y and accounts for, in particular, the additional effects of magnetic field heterogeneities on the loss of phase coherence of the magnetisation. Thus, the simple pulse-acquire sequence (with no re-focusing) shown in Fig. 3, will give a response in which the envelope... 

Electrical separation Electrical field Heterogeneous Electro osmosis (s -1) Electrical dust removal (s — g)... 

It should be noted that most of the reactions highlighted in this chapter are from the last few years, considering the wealth of reviews on this subject that have appeared over the last lOyears [Ij. Also, owing to the novelty of this particular field, heterogeneous applications and other type developments appear to be quite few, well, for the moment anyway. ... 

Resolution H resonance frequency Field heterogeneity Response time Operator requirements... 

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