Podcast
Questions and Answers
What is the main source of nitrogen for a soybean crop at a 65 bu/ac yield level in Nebraska?
What is the main source of nitrogen for a soybean crop at a 65 bu/ac yield level in Nebraska?
- Symbiotic fixation of nitrogen from the atmosphere
- Nodules formation on soybean roots
- Residual nitrogen in the soil and nitrogen from mineralized organic matter (correct)
- Nitrogen fertilizer application
What is the expected outcome of applying micronutrients like boron, copper, and molybdenum to soybeans grown in Nebraska?
What is the expected outcome of applying micronutrients like boron, copper, and molybdenum to soybeans grown in Nebraska?
- Significant increase in yield
- Increased disease resistance
- Decrease in yield
- No significant yield increase (correct)
Which factor makes it less likely for elevated postharvest soil nitrate levels to result in significant nitrate leaching below the root zone?
Which factor makes it less likely for elevated postharvest soil nitrate levels to result in significant nitrate leaching below the root zone?
- Deficiencies of micronutrients like manganese
- Symbiotic fixation of nitrogen from the atmosphere (correct)
- Application of nitrogen fertilizer
- Presence of white mold
What is the consequence of applying manure for narrow-row soybeans based on research findings in other states?
What is the consequence of applying manure for narrow-row soybeans based on research findings in other states?
Why are deficiencies of boron, chlorine, copper, manganese, and molybdenum not observed in soybeans grown in Nebraska?
Why are deficiencies of boron, chlorine, copper, manganese, and molybdenum not observed in soybeans grown in Nebraska?
What is the preferred practice for short- and long-term benefits to improve soybean yield?
What is the preferred practice for short- and long-term benefits to improve soybean yield?
In which type of soil conditions is soybean yield more likely to benefit from nitrogen fertilizer application?
In which type of soil conditions is soybean yield more likely to benefit from nitrogen fertilizer application?
What can be inferred if active nodules (dark pink center) are absent from soybean roots?
What can be inferred if active nodules (dark pink center) are absent from soybean roots?
When should nitrogen fertilizer be ideally applied to soybean fields?
When should nitrogen fertilizer be ideally applied to soybean fields?
Why is routine nitrogen application not recommended for soybean crops?
Why is routine nitrogen application not recommended for soybean crops?
Where does soybean obtain 25 to 75 percent of its plant nitrogen from?
Where does soybean obtain 25 to 75 percent of its plant nitrogen from?
When do nodules start to appear on soybean roots?
When do nodules start to appear on soybean roots?
In which scenario is seed inoculation recommended for soybean production?
In which scenario is seed inoculation recommended for soybean production?
What percentage of nitrogen needed by soybean can be supplied by symbiotic fixation with Bradyrhizobium japonicum bacteria?
What percentage of nitrogen needed by soybean can be supplied by symbiotic fixation with Bradyrhizobium japonicum bacteria?
Under what conditions may the supply of nitrogen from soil and nodules be inadequate for soybean?
Under what conditions may the supply of nitrogen from soil and nodules be inadequate for soybean?
What is the main reason for iron chlorosis in plants according to the text?
What is the main reason for iron chlorosis in plants according to the text?
How can high levels of nitrate-nitrogen in the soil affect iron availability to soybean plants?
How can high levels of nitrate-nitrogen in the soil affect iron availability to soybean plants?
What is a recommended management practice to address iron chlorosis in soybean plants?
What is a recommended management practice to address iron chlorosis in soybean plants?
In which scenario is it unlikely that tolerant soybean varieties will produce well?
In which scenario is it unlikely that tolerant soybean varieties will produce well?
How does low soybean plant density affect the severity of iron chlorosis?
How does low soybean plant density affect the severity of iron chlorosis?
What is a method producers can use to control fertilizer application based on management zone maps?
What is a method producers can use to control fertilizer application based on management zone maps?
In which field conditions is zinc fertilization likely to be beneficial?
In which field conditions is zinc fertilization likely to be beneficial?
What happens if soybean does not show zinc deficiency after a previous corn crop?
What happens if soybean does not show zinc deficiency after a previous corn crop?
How can manure application before planting soybean affect yield?
How can manure application before planting soybean affect yield?
To avoid surpassing the soybean nitrogen removal rate, how should manure rates be calculated?
To avoid surpassing the soybean nitrogen removal rate, how should manure rates be calculated?
