Which agricultural consequence resulted when pre-Columbian chinampa farmers increased maize planting density beyond nitrification limits?

💡 Explanation

When maize planting density exceeded nitrification limits, ammonification outpaced subsequent conversion to nitrates, because soil microbes reducing oxygen inhibited further redox. Therefore, susceptibility to fungal pathogens increased, rather than A,C, or D which require soil contamination, compaction, and phosphorus deficiency rather than a soil microbiome changes and ammonium toxicity.

• Which navigational error increases most when a 18th-century mariner sights the sun using a sextant from tilting ship?
• Which optical effect complicated early Islamic astronomical observations before atmospheric models were developed?
• Which critical failure was increased when ancient Mesopotamian ziggurats were constructed on saturated clay soils without drainage provisions?
• Which mechanism explains the increased accuracy of Islamic astronomical observations after introduction of trigonometry?
• Which effect limited the range of Roman torsion-powered siege engines, like ballistae, when targeting fortified walls?
• Which effect arises when Medieval Islamic astronomers used spherical astrolabes closer to the magnetic poles?