66 PORAGE CROfS. 



when, for instance, they are to be plowed under for 

 green manure. 



In providing pasture for sheep and swine, they 

 should be equally serviceable with sorghum. Sheep 

 especially should graze them down with but little 

 waste, if turned in upon them before they got 

 beyond the hight of, say, twelve inches. 



In pasturing off these crops, it would be neces- 

 sary to observe much caution in turning in animals 

 to graze after the application of irrigating waters, 

 or after much rainfall, especially on lands that are 

 easily injured by treading when thus pastured. 

 Impaction under these conditions would greatly 

 injure the future growth of the crop. 



The duration of the season of depasturing 

 should be considerable in the south, owing to the 

 length of the season. The relative advantage, there- 

 fore, from growing such crops in the south and 

 southwest should be considerably greater than in the 

 north. For how long a period they will provide 

 pasture from a single sowing, the author is unable 

 to say. Much that it would be greatly advantageous 

 to know in regard to the growth of these plants can- 

 not be given as yet. It can be unfolded only by the 

 experience of the future. 



