120 



the Grasses op Tennessee. 



acre each, were selected in May, from the middle of a large 

 clover field. The plants were then about an inch high. 

 One of the plats was manured with 128 lbs. of gypsum, the 

 second with the same quantity of sulphate of magnesia, and 

 the intervening plat was left without the application of 

 any fertilizer. 



On the plat treated with gypsum the clover plants soon 

 showed a deeper green and a more vigorous growth. The 

 clover on the unmanured plat bloomed four or five days 

 earlier than on the manured. On the manured plats the 

 clover was in full flower on May 24, when it was mown. 

 The results were from each plat 



Cwt. of Clover Hay. 



Without manure .' 21 . 6 



With gypsum 30.6 



With sulphate of magnesia 32. 4 



It was ascertained by a closer examination, that the in- 

 crease in weight obtained from the plats manured with the 

 sulphate did not extend equally to all parts of the plant, 

 but was greatest in the production of stems. There were 

 fewer leaves, fewer flowers, but more stems on the manured 

 than on the unmanured portions. Taking 100 parts of hay 

 the following results were obtained : 



ONE HUNDRED PARTS OV OLOVBB HAT. 



■a g .s 



Flowers 

 Leaves . . 

 Stems . . . 



12.16 



25.28' 



6S.0 



Or putting in anofeher form : 



ONE HUNDRED PABTB OF OLOVEE HAY. 



GO 



Clover hay unmanured 



Manured with gypsum 



Manured with sulphate of magnesia 



55.40 

 61.62 

 68.0 



