Nitrate-nitrogen contents in forage crops. 2. Effect of four levels of light intensity and two levels of nitrogen on yields and nitrate-nitrogen contents of Bahiagrass Paspalum notatum Flugge) and Bermuda-grass (Cynodon dactylon Pers.)
Ehara, K.; Yamada, Y.; Umetsu, R.
Proc. Crop Sci. Soc. Japan, Japan 37: 59-64
In pot experiments, reduced light intensity was associated with decrease in yield and increase in NO3content in both grasses. Under sufficient light intensity (100% or 75% of incident light) yields tended to be higher at high N level than at low N level, 'but with insufficient light (50 and 25% of incident light) the reverse was true. NO3 accumulation in plants indicated that the rate of N assimilation lagged behind the rate of N uptake.