This book contains detailed studies on the techniques like QuEChERS, Solid Phase extraction and MRM involved in the pesticide residue estimation on the crops like Apple, Cabbage and Cauliflower.These techniques were examined in detail for their suitability and efficiency in the extraction of about 42 pesticides, reported as contaminants in these crops. The various material used and the methods are discussed in detail and the results are used to reach the conclusion in respect of the best suitable method for these pesticides. This can prove helpful in the screening, analysis, cleanup and determination of different pesticides by the researchers. This will in turn lead to the safe consumption of these crops with the different methods of detection of residues made available in one book. I hope that the researchers will get enough help from this book in the determination of residues.