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Pre-harvest protection :-
 -  method to control and protect from weeds ( unwanted plant in the cultivated field which reduces the growth of crop by taking nutritions , light , spaces , etc. ) , insects( damages the crop )  and  pathogens(microbes which affects the plant ) were this are protected by different methods like cutting the plant , herbicides , mixed cropping , physical removal , fungicides , resistant varieties , summer ploughing , etc .

post-harvest protection :-
 - methods to protect from biotic and abiotic factors during storage by diffrent methods like cleaning of produce before storage , drying of produce to reduce moisture , fumigation  and cold facilities . 
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