20 ORCHARD GREEN-MANURE CROPS IN CALIFORNIA. 
On account of the light growth usually made by a green-manure 
crop sown in the fall without irrigation, the expense of seeding a 
crop each year in this way is hardly justified. Through the use of 
bur clover this objection can be overcome by allowing the crop to 
reseed itself from year to year. In this way with a little care bur 
clover can be maintained in an orchard at small expense. If an 
occasional late season prevents the crop from ripening its seed before 
the orchard must be plowed, narrow strips can be left between the 
rows to mature, and 
in this way reseed- 
ing be accomplished. 
The fact that the 
seeds of bur clover do 
not all germinate the 
first year but hold 
over in the soil until 
the second or third 
year, or even longer, 
lends to the ease 
of maintaining the 
stand. ; 
Bur clover is at 
present most com- 
monly introduced 
and maintained in 
orchards by the use 
of manure from old 
sheep corrals, which 
usually contains large 
quantities of theseed. 
FENUGREEK. 
Fenugreek (Trigo- 
nella foenum-graecum) 
is an upright-growing 
plant having acentral 
stem which is more or less branched. A somewhat open top is formed 
when fenugreek is grown as an individual plant (see fig. 5). When 
grown in plats with little chance for individual development, but 
few branches are formed. The plants attain a height of 20 to 30 
inches. The leaves, of which there is a medium number, are trifoliate, 
with cuneate or obovate thickish leaflets. The seeds, which are borne 
in long, pointed pods, are quite small (one or two lines long) and of 
a brownish-yellow color. The pods dehisce, or break open, tardily, 
making the crop one that can be handled easily for seed. 
190 
Fie. 5.—An individual plant of fenugreek, showing its characteristics. 
