HAY AND PASTURE CROPS 



103 



Arithmetic: 



1. If an acre of clover yields 3,500 lbs. of hay at the first ciop, 

 and a bushel of seed at the second crop, what is the value of the entire 

 crop, hay $10 per ton and clover seed $8 per bushel? 



2. If an acre of clover yields 200 lbs. of seed, what is its value 

 at $8 per bushel? (60 lbs. per bu.) 



3- If clover seed is worth $8 per' bushel, what is its value per 

 hundred weight? 



CLOVER ROOTS AND BACTERIA 



Medium Red Clover Root. — An examination of the 

 roots of medium red, alsike and white clover will show con- 

 siderable difference in them. The medium red clover has 

 a large taproot (a root running straight down in the soil). 

 This root is nmch larger and longer than the root of either 

 of the other clovers. If a plant is dug carefully from a 



well drained soil, ''^his 

 taproot will be found to 

 extend down two, and 

 often more, feet; which 

 shows that this clover 

 gets part of its food 

 from the subsoil. It has 

 also many lateral roots 

 running out from the 

 taproot. In fact, if roots 

 are carefully taken up, 

 it will be seen that there 

 is nearly as much plant 

 below as above ground. 

 On this account medium 

 red clover is one of the 

 very best crops to grow 

 to add vegetable matter 

 to the soil. 



Alsike clover roots are 

 considerably smaller than 

 those of medium red 

 clover. In many plants 

 the taproot is not plainly 



Figure 45. — Root system of medium red ^„ :^ ».^+ ,^,,«U 1 «««.«-.« 



dover. (Note large taproot, lateral roots SCCn Or IS UOt mUCh larger 



and nodules caused by nitrogen-gathering than the flbrOUS rOOtS. 

 bacteria.) 



