(7.) A specification problem might exist due to the omission of other independent variables that may influence the two yield ratios. However, including MF with MMF in either of the equations results in the problem of multicollinearity.
This in turn suggests an inverse relationship between the level of MMF purchases and the short-term yield and yield ratio. For example, if investors increase their MMF deposits, the MMFs will need to increase their purchases of short-term securities.
The coefficient of -6.17 implies that a 1-percentage increase in the proportion of municipals held by the MMFs will result in about a 0.06-percentage point drop in the short-term yield ratio. Apparently a new form of segmentation does exist in the municipal bond market, one based on MMFs as a distinct and separate market for short-term debt.
Similarly, if the huge quantities of alcohol consumption that certain statistical studies present can be believed, then, given the low yield ratios
in grain production typical of traditional Europe, most of the harvest would have to have been allocated to brewing (although this would not apply to wine-consuming areas).
In the intermediate position B between eucalyptus tracks, the higher nitrogen level did not increase both the phytomass and grain yield ratios, suggesting that the nitrogen level for these places should be inferior of 80kg N [ha.sup.-1].
Oat tillering persistence, in terms of both phytomass and grain yield ratios, is dependent on different nitrogen levels at distances relative to adjacent eucalyptus tracks, and different nitrogen levels should therefore be used at those distances to improve the oat yield potential inside ACS in subtropical Brazil.
The tillers-to-main shoot grain yield ratio (mg [mg.sup.-1]) (grain yield ratio) was obtained by dividing the tillers grain yield by the grain yield of the main shoot.
The most unexpected aspect of the research is the consistently high yield ratios from the developing world.
Model 1 applied the organic: non-organic (conventional) yield ratios derived from studies in developed countries to the entire agricultural land base.
68.) Despite modest average yield ratios
(less than four to one for rye), high overhead, taxes, and additional rents in cash and kind, peasants with full farmsteads (sixty to seventy-five acres of arable) retained for their own use approximately fifty percent of their grain surplus in the first half of the eighteenth century.
Further, the municipal bond yield ratios for 10- and five-year maturities are also higher than average at 84.1% and 78.2%, respectively.
The municipal bond yield ratio for short-term bonds is normally smaller than for long-term bonds; the yield on municipal bonds with a one-year maturity averages only about 70% of the yield on comparable taxable bonds.