SCS-C-8764 
Factors controlling plant competition for light, moisture, 
and nutrients require detailed study. 
emp 777777” 
A plant physiologist examines red clover plants in a 
growth chamber at Lafayette, Ind. In controlled experi- 
ments, critical information can be obtained on the inter- 
action of day length, light intensity, and temperature on 
vegetative and reproductive development of grasses and 
lecumes. 
22 
ey p 
BAUS oases cath h 
N-28644 
Information on the physiological behavior of forage 
plants is obtained from comprehensive field experiments. 
Measuring the amount of light reaching grass grown 
under shade cloth is part of the procedure used at Tifton, 
Ga., to determine the effect of light on yield and com- 
position of Coastal bermudagrass. 
BN—29535 
Environmental factors are partially controlled in a green- 
house study at the U.S. Regional Pasture Research 
Laboratory, University Park, Pa. In this experiment, 
plant competition for nutrients supplied from a common 
reservoir is investigated while competition for space and 
light is eliminated by growing grass and clover in separate 
pots. 
