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Author Question: Conservation tillage systems are said to have all of the following advantages but one over ... (Read 469 times)

bobthebuilder

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on: Jul 22, 2018
Conservation tillage systems are said to have all of the following advantages but one over conventional tillage systems.
 
  A) it involves the use of less toxic weed control practices
  B) it reduces soil erosion
  C) it encourages higher microbial population numbers in the soil
  D) it increases the hydraulic conductivity of the soil
  E) its labor and energy requirements are lower

Question 2

In one field trial comparing no-till and conventional tillage, soil samples taken after 15 years without liming revealed that the pH of the upper 15 cm was lower on the no-till plot than on the conventional plot. Which of the following most likely accounts for this difference?
 
  A) earthworms were more active in the no-till plot
  B) acidifying effects of nitrogen-containing fertilizers
  C) organic decomposition produced more organic acids in the no-till plot
  D) plowing mixes the surface soil more thoroughly
  E) Al3+ ions are tied up by the organic matter thereby releasing H+ ions
The Nature and Properties of Soils ¦ Weil, Well, Brady ¦ 15th Edition
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macagn

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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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bobthebuilder

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Reply 2 on: Jul 22, 2018
Gracias!

xiaomengxian

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Reply 3 on: Yesterday
:D TYSM

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