Corn Growth and Yield Analysis

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Questions and Answers

What does a Land Equivalent Ratio (LER) of less than 1.0 indicate?

Intercropping and sole cropping have equal productivity.

Monocropping is more advantageous than intercropping. (correct)

Intercropping is more productive than sole cropping.

Intercropping is less productive than double cropping.

How is the Grain Yield measured in the intercropping of Mungbean and Peanut?

By estimating the plant height.

By counting the number of pods.

By calculating the seed density.

By weighing the harvested grains. (correct)

What method is used to determine the Weight of 1,000 seeds?

Weighing 100 dry pods.

Weighing 1000 clean, dried seeds. (correct)

Counting seeds directly from the field.

Estimating based on average pod weights.

Which variable is NOT used in the calculation of the Land Equivalent Ratio (LER)?

Soil nutrient content. Signup and view all the answers

What is the implication of a Land Equivalent Ratio (LER) of 1.0?

Intercropping and sole cropping have the same productivity. Signup and view all the answers

What is the benefit of recording the number of seeds per pod?

It assesses the reproductive success of the plant. Signup and view all the answers

Which of the following practices contributes to soil management in an intercropping system?

Diverse cropping to enhance soil health. Signup and view all the answers

In the context of intercropping, what is the significance of cleaning and drying grains to approximately 14% moisture content before weighing?

It prevents spoilage and provides accurate weight measurements. Signup and view all the answers

What is the primary criterion for measuring days from seeding to tasseling?

When 50% of the plants have produced tassel Signup and view all the answers

Which measurement indicates that 80% of the plants have reached the boiling stage?

Days from silking to boiling stage Signup and view all the answers

What does a measure of 'weekly plant height (cm)' capture?

The height from the base to the tip of the tallest plant Signup and view all the answers

How is the ear weight per plant determined?

By weighing ear weight from a sample of 10 ears at harvest Signup and view all the answers

What is the significance of measuring 'non-marketable yield (t/ha)'?

It evaluates the weight of ears that are not marketable at harvest Signup and view all the answers

Which method is used to count the number of ears per plant?

Counting all ears from 10 randomly selected plants Signup and view all the answers

What does the 'days from seeding to harvest' measurement represent?

The interval between planting and crop maturity Signup and view all the answers

How is the ear length measured?

From the butt of the ear up to the tip of the cob Signup and view all the answers

What is the primary purpose of calculating marketable yield in tons per hectare?

To determine the efficiency of crop production Signup and view all the answers

How is the Land Equivalent Ratio (LER) calculated?

By using the yield of intercrops and comparing them to sole cropping Signup and view all the answers

Which of the following best defines the term 'days from seeding to tasseling'?

Days required for plants to develop tassels Signup and view all the answers

What is the significance of measuring plant height in a crop study?

To assess growth performance and overall health Signup and view all the answers

What does the measurement of 'pods per plant' indicate in an intercrop study?

The yield potential of the crops Signup and view all the answers

What is the expected outcome when using an intercropping scheme?

Higher overall crop yields compared to monocropping Signup and view all the answers

What is meant by 'days from seeding to maturity' in crop production?

The period until the majority of the plants are ready for harvest Signup and view all the answers

Why is it necessary to record the total ear yield per hectare?

To assess both marketable and non-marketable ear yields Signup and view all the answers

What does the term 'growth stages' refer to in crop cultivation?

The various periods of development that plants undergo Signup and view all the answers

What is an important factor in determining the success of intercropping systems?

The timing of planting and harvesting different crops Signup and view all the answers

Study Notes

Data to be Gathered

Corn (T1, T3, T4)
- Days from seeding to tasseling
  - When 50% of plants produce tassels
- Days from seeding to silking
  - When 50% of plants produce silk
- Days from silking to boiling stage
  - When 80% of plants reach boiling stage
- Days from seeding to harvest
  - Number of days from seeding to harvest
- Weekly plant height (cm)
  - Measured from base to top of the tallest portion of the plant, from 10 randomly selected plants
- Number of ears per plant
  - Count ears on 10 randomly selected plants
- Ear weight per plant (g)
  - Weigh 10 randomly selected ears
- Ear length (cm)
  - Measure length of 10 ears from the butt to the tip of the cob.
- Non-marketable yield (t/ha)
  - Weigh the non-marketable ears, and convert to tons per hectare
- Total ear yield per hectare (t/ha)
  - Add the weights of marketable & non-marketable ears, then convert to tons per hectare

Intercrop (Mungbean & Peanut – T2, T3, T4 & T5)

Days from seeding to flowering
- When 50% of the plants have produced flowers
Days from seeding to maturity
- When 85% of plants have reached maturity and are ready for harvest
Weekly plant height (cm)
- Measured from base to the tip of the tallest leaf, from 10 randomly selected plants
Number of pods/plant
- Count pods per plant on 10 randomly selected plants
Number of seeds/pod
- Count seeds per pod from 10 sample pods
Weight of 1,000 seeds
- Weigh 1000 clean, dried seeds
Grain yield (t/ha)
- Weigh the harvested peanuts and mungbeans (clean, dried at 14% moisture content) then convert to tons per hectare
Land equivalent ratio (LER)
- LER is computed using the formula provided in article, LER of >1.0 means intercropping is more productive than sole cropping, LER of <1.0 means monocropping is more productive, whereas 1.0 is the equivalency point.

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Description

This quiz tests your knowledge on key metrics related to corn growth and yield. Topics include days from seeding to various growth stages, weekly plant height, ear characteristics, and yield calculations. Perfect for students studying agronomy or agricultural science.