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Author Question: Saline soils are characterized by: A) high CaCO3 levels near the soil surface. B) pH values of ... (Read 54 times)

s.tung

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on: Jul 22, 2018
Saline soils are characterized by:
 
  A) high CaCO3 levels near the soil surface.
  B) pH values of less than 8.5.
  C) electrical conductivity of standard saturated paste of less than 4 dS/m.
  D) low chloride and sulfate contents.
  E) sodium adsorption ratios of 13 or higher.

Question 2

If soil test results for P are available, the optimum amount of P fertilizer to apply to a crop can be best recommended by:
 
  A) calculating the amount of P needed to bring the ratios of soil test P to N, P to K, and P to Mg into balance with the proper ratio for the type of soil in question.
  B) comparing the cost of P fertilizer to the yield responses measured in the past when P was applied to similar soils with similar soil test P levels.
  C) subtracting the available soil test P from the total P uptake for the desired yield goal.
  D) subtracting the soil test P level measured from the soil test P level considered to be on the border of high and very high.
  E) These days, all four of the above are done, in order, by a computer program.
The Nature and Properties of Soils ¦ Weil, Well, Brady ¦ 15th Edition
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scikid

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Reply #1 on: Jul 22, 2018
Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.
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s.tung

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Reply 2 on: Jul 22, 2018
Excellent

duy1981999

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Reply 3 on: Yesterday
Gracias!

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