Index. 233 



Potash iii wheat crop, 37, 89, 142 



manures, 151, 155, 159, 161, 164, 167, 170, 171 175 

 recovered, aiid not recovered, in crops, 202 



Potentilla, 220 



Primulacese, 220 



Purple clover (see Trifolium prateuse) 



QUAKING grass (see Briza) 

 Quality of hay, 172 



crop, 92, 94, 96 

 Quantity of crop, 92, 94, 96 



RAINFALL, 63, 70, 94, 95, 210 

 RanunculacesB, 220 

 Ranunculus, 220 



bulbosus, 138, 155 

 repeiis, 138, 155 



Rape cake, 7, 8, 10, 11, 13, 16, 53, 102.. 126 

 Ribgrass (see Plantago) 

 Ribwort (see Plantago) 

 Rodmersham wheat experiments, 12 

 " Root-crops," 188 

 Root distribution in the soil, 149, 152, 180, 188, 207, 223, 225 



growth, 224 

 Rosaceae, 220 



Rotation, barley grown in, 114, 116 

 Rough cocksfoot (see Dactylis) 

 Rough-stalked meadow grass (see Poa trivialis) 

 Rubiaceae, 220 

 Rumex, 220 



Acetosa, 138, 146, 155, 163, 169, 218 

 Rye grass (see Lolium) 

 Rye-leaved fescue (see Festuca loliacea) 



SAWDUST, 154, 156, 178 



Scrophulariacese, 220 



Season, characters of a bad, 27, 67, 95, 127, 212, 215 



characters of a good, 26, 65, 94, J27, 211, 214 



favourable for wheat, 59 



influence of, 23, 63, 209 

 Second grass crops, 206 



