Compute the grass pixel ratio (GPR). 5.
Compute the grass pixel ratio (GPR).
Due to varying green tones, the grass pixel ratio differs largely on various datasets; hence, it is not wise to set the threshold statically for the separation of far field and non-far field views.
The 4 diets contained approximately 20 mg of Cu/kg of dry matter (DM), and had a corn silage-to-grass silage ratio of 0.75:0.25 (C) or 0.25:0.75 (G) and were either unsupplemented or supplemented with an additional 2 g of S/kg of DM and 6.5 mg of Mo/kg of DM.
Alternatively, it may be advantageous to select a harvest time that maximizes the grass:legume ratio so that the agricultural benefits of legumes can still be obtained while reducing their negative effect on the biological conversion yields.
Automatic linear modelling procedures selected six parameters as the most important variables in predicting butterfly numbers: the landscape heterogeneity of the surroundings, the time of mowing, the width and length of the margin, the grass-herb-ratio and the management of the adjacent field.
Karunanithy and Muthukumarappan (2010) studied the effect of varying moisture contents (15, 25, 35, and 45% wb) on the sugar recovery from switch grass and prairie cord grass at compression ratio (2 1 and 3 1), screw speed (50, 100 and 150 rpm), and barrel temperature (50, 100, and 150 °C).
In spite of large compositional differences (ratio grasses : non-leguminous forbs : leguminous forbs ranging from 93 : 7 : 0 to 39 : 52 : 9), the vegetation of the same management regime hardly differed in its canopy structure, whereas the different management regimes led to distinct vertical profiles in the vegetation.
Nevertheless in the case of agriculture and grass land the ratio is <1.
Averaged across grass treatments, C N ratio was 8.97 ± 3.41 for the 0- to 100-cm depth.
