Striga hermonthica which is commonly known as purple or giant witch weed is a semi parasitic weed that belongs to the family orobanchaceae. It is devastating to many crops mainly to sorghum, maize and rice. Striga hermonthica may have developed in north east Africa especially around the boarder of Ethiopia and Sudan....

Why insects are the most successful and most diversified of all creatures? What is their economic importance to our welfare? Do they have any detrimental effect? What type’s external features come to your mind while you hear the word arthropod?...