LABORATORY MANUAL IN FIELD CROPS 5 



PRACTICUM NO. 4 

 Object. The Study of the Corn Kernel. 

 Materials. Samples of corn, beakers, alcohol lamp, scales. 



Method. Soak ten grams of corn in warm water until the 

 outer coating can be easily torn off. Separate the following 

 parts : testa, starch, embryo, endosperm. Dry these parts in 

 the oven at a slow temperature for several hours, and then 

 determine the percent of kernel made up by each part. (Check 

 your residue on the original sample.) 



(1) From seeds which have been soaked until they may be 

 easily cut in pieces, make a drawing of a lateral cross section 

 and label all parts. 



(2) Make a drawing of a side section and label all parts. 



STUDIES 



1. Name ten products obtained from the kernel of corn. 

 Tell from what part each is obtained. 



2. From what part of the kernel are the most nutritious 

 foods obtained ? 



3. What is the aleurone layer on the kernel, and where is it 

 found in reference to the other layers ? 



REFERENCES 



Hunt's Cereals in America. 



Bailey's Cyclopedia of American Agriculture, Vol. 2, p. 325. 



Wilson and Warburton's Field Crops. 



American Corn Products Company's Corn Products. 



Farmers' Bulletin No. 298. 



Livingston's Field Crop Production, pp. 51-53. 



