WASHINGTON 



2021 



following table (Table III) for practical 

 rating of soil from its cliemical composi- 

 tion lias been devised. Tlie table as 

 originally prepared by Prof. Maercker, of 

 the celebrated Halle Experiment Station, 



of Germany, is expressed in terms of per- 

 centages of the several elements, but 

 these have been computed as pounds per 

 acre-foot in order to facilitate compari- 

 son with the other tables of this bulletin. 



Table III — ^Practical Ratings of Soils by Content of Plant Food— Plant Food Com- 



pnted in Pounds per Acre of Top Foot of Soil 



Grade of soil 



Poor 



Medium 

 Normal . 

 Good, . , 

 Eich 



Lime 



Clay soil 



Below 4,000 

 4,000-10,000 

 10,000-20,000 

 20,000-40,000 

 Above 40,000 



Sandy soil 



Below 2,000 

 2,000- 4,000 

 4,000- 8,000 

 8,000-12,000 

 Above 12,000 



Potash. 



Below 2,000 

 2,000- 6,000 

 6,000-10,000 

 10,000-16,000 

 Above 16,000 



PhK^phoric acid 



Below 2,000 

 2,000- 4,000 

 4,000- 6,000 

 6,000-10,000 

 Above 10,000 



Nitrogen 



Below 2,000 

 2,000- 4,000 

 4,000- 6,000 

 6,000-10,000 

 Above 10,000 



The ratings presented in this table 

 have been so generally accepted by soil 

 chemists, even those whose methods of 

 analyses differ considerably, that they 

 may be accepted as of general applica- 

 bility to the soils of the temperate zone. 

 As judged by this table, for example, the 

 basaltic loam soil, so prevalent over 

 Southeastern Washington, is generally 

 rich in lime and potash, above normal in 

 phosphoric acid and medium or poor in 

 nitrogen. Similarly, the common clay 

 loam of Western Washington is gener- 

 ally below normal in lime and potash, 

 rich in phosphoric acid and normal to 

 rich in nitrogen, r. -vv. Thatcher, 

 Director Washington Experiment Station. 



Fruits for Washington 



Recommended by Washington State 

 College, Department of Horticulture, for 

 Eastern Washington. The letters (E) 

 (M) and (L) indicate the season of 

 ripening, whether early, midseason or 

 late. 



Apples 



For the irrigated valleys, Deli- 

 cious (L), Duchess (M), Gravenstein 

 (M), Grimes Golden (L), Jonathan (L), 

 King (M), Rome Beauty (L), Spitzen- 

 burg (L), White Winter Pearmain (L), 

 Winesap (L), Winter Banana (L), Yel- 

 low Newtown (L), Yellow Transparent 

 (E). For upland orchards, Delicious 

 (L), Duchess (M), Gano (L), Graven- 

 stein (M), Jonathan (L), King (M), 

 Rome Beauty (L), Wagener (L), Wealthy 



(M), White Winter Pearmain (L), Win- 

 ter Banana (L), Yellow Transparent (E), 

 York Imperial (L). 



Apricots 



For irrigated valleys, Early Golden (E), 

 Hem-shirke (M), Moorpack (E), Royal 

 (M). For upland orchards, Gibb (E) and 

 Moorpack (E). 



Sweet Cherries 



For irrigated valleys Bing (M), Black 

 Republican (L), Hoskins (L), Lambert 

 (L). For upland orchards, Bing (M), 

 Centennial (M), Hoskins (L), Lambert 

 (L), Vilne Sweet. 



Sour Cherries and. Dukes 



Early Richmond (E), Montmorency 

 (M), Northwest (L), Olivet (M), May 

 Duke, Late Duke, Reine Hortense. 



Peaches 



For irrigated valleys, Early Crawford 

 (E), Elberta (M), Foster (M), Hale (E), 

 Hill's Chili (M), Late Crawford (L), Sal- 

 way (L), Wheatland (M). For upland 

 orchards, Alexander (E), Champion (E), 

 Early Crawford (E), Foster (E), Hale 

 (E), Triumph (E), Wonderful (M). 



Pears 



Anjou (M), Bartlett (E), Clairgeau 

 (L), Cornice (M), Flemish (M), Seckel 

 (M), White Doyenne (M), Winter Nelis 



(L). 



Plums 



Abundance, Bradshaw, Peach and Wick- 

 son. 



Prunes 



Hungarian, Italian and Silver. 



