40 LABORATORY MANUAL IN FIELD CROPS 



PRACTICUM NO. 31 



Object. An Examination of Commercial Clover Seeds. 

 Materials. Samples of commercial clover seed. 



Method. Weigh out five grams of each sample of seeds, 

 separate the sample into three parts, pure seeds, weed seed, 

 and inert matter. Make a germination test of the clover seed 

 by placing one hundred seeds in the germinator and leaving it 

 for five days. 



Tabulate the results in the notebook as suggested by this 

 outline : 



STUDIES 



Total weight of seeds. 



Weight of pure clover. 



Number of weed seeds per pound. 



Weight of weed seed, milligrams. 



Weight of inert matter, milligrams. 



Pure seed % 



Weed seed % 



Inert matter . . . . % 



Germination % 



Pure viable seeds . . . % 



Sample 1, costs i per pound. 



Sample 2, costs i per pound. 



What is the actual cost per bushel of pure viable seed in 

 each sample ? 



If sown at the rate of nine pounds per acre, how many weed 

 seeds per acre would be sown in each case ? 



