LABORATORY EXERCISES 241 



Apply six bushels of lime to plots 2, 4, and 6. This is at the rate of 

 twenty bushels, or about 1,500 pounds per acre. 



Inoculate plots 3, 4, 5, and 6 with soil from an alfalfa field, or from 

 a place where sweet clover grows, using about one or two bushels. 



Sow one-third of the alfalfa seed on plots 5 and 6, with about seven 

 quarts of barley or oats. 



Continue to harrow the other plots until all weeds are subdued, 

 then sow the alfalfa alone, two months before the first frost is likely to 

 come, August 1 in the latitude of Chicago. In regions where the 

 season is long enough, potatoes may take the place of the fallow. 



The plots may, of course, be of any size. The above areas are large 

 enough to answer the questions. If one desires to plant a larger area 

 the following year, he will know the best method to use, and will have 

 soil for inoculation purposes, if inoculation proves to be necessary on 

 the farm. 



59. Field Lesson on Legumes. 



Find as many kinds of legumes as possible. Learn the common 

 name of each. Learn to distinguish the different clovers. Red clover, 

 by the white spot on the leaf; alsike, by the absence of this spot, smaller 

 size, different colored blossoms; white, by still smaller size and un- 

 branched flower-stalks. Dig up each legume carefully and find the 

 nodules. Make a drawing of each kind of nodules. What legumes 

 require inoculation in your region? 



60. How to Plant a Tree. 



On Arbor Day, or at some other time, plant a tree according to the 

 directions on page 227. 



61. Crop Production. 



Let each student select a farm crop, and learn all that is pos- 

 sible about the crop and its production, and write a complete discussion 

 from the preparation of the land to marketing the crop. Other mem- 

 bers of the class may write up the methods used in the neighborhood 

 on some important crop, with suggestions for improvement. 



