Abstract
Two field experiments were conducted in the experimental station farm, faculty of agriculture, Ain Shams University at Shalakan, Kalubia Governorate, during the two growing seasons, i.e. 2009 and 2010, to investigate the response of growth and forage yield production of pearl millet cv. Shandaweel 1 to nitrogen fertilization rates and cutting height above the soil surface. Four nitrogen rates as ammonium nitrate (33.5%N), 0, 30, 45, and 60 kg N/fed, were arranged in the main plots and two levels of cutting heights (10 and 20 cm above the soil surface) in the subplot with four replicates in split-plot design. In the second season, nitrogen application increased up to 75 kg N/fed. The main results were as follows: Significant increases were appeared in plant height (cm), number of tillers/m2, number of leaves/m2, and leaf area index during the two growing seasons as nitrogen fertilization rates increased except at the third cut in the first season for plant height (cm) and number of tillers/m2, the first and second cuts of the first season for number of leaves/m2 and at the third cut during the first season of study for leaf area index, while leaf/stem ratio was not affected significantly during the two growing seasons. Green forage yield/fed was significantly increased as nitrogen application rates increased during the two growing seasons except at the third cut of the first season of study. Increasing nitrogen fertilization rates up to 75 kg N/fed caused significant increases in dry forage yield during the three collected cuts in the second season of study and the second cut during the first season of study as well as in the combined results. Plant height (cm) was significantly affected as cutting height above the soil surface increased in the second cut (2009) and the first cut (2010) where plant height increased at 10 cm as cutting height than at 20 cm above the soil surface. Significant differences were appeared in number of tillers/m2 as cutting height varied from 10 to 20 cm in the two studied seasons. The highest cut of number of tillers/m2 was scored at 20 cm cutting height than those at 10 cm in the second and third cuts during the two growing seasons. A number of leaves/m2 as well as leaf area index were influenced significantly as cutting height increased during the two growing seasons except in the second and third cuts during 2009 or the third cut during 2010 for number of leaves/m2 and in the second cut of the first season (2009) and the third cut during 2010 for leaf area index. Significant effects were noticed in leaf/stem ratio as cutting height differed in the second or third cut in 2009 and in the three collected cuts in combined analysis. Green forage yield, dry forage yield/feddan increase significantly as cutting height differed during the two growing seasons as well as the combined results except in the first cut during the first season of study for dry forage yield. Green forage yield as well as dry forage yield was significantly affected by the interaction between nitrogen fertilization rates and cutting height, where the highest yield was detected with adding 60–75 kg N/fed and 20 cm as cutting height (30.7 ton/fed).
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Claims 10
Claim · model-written summary
Nitrogen rates increased plant height and tiller number, with stated cut exceptions.
- Taxon
- pearl millet
Cenchrus americanust0 - Treatment
- nitrogen fertilization ratese0
- Outcome
- plant height (cm), number of tillers/m2e0
- Direction
- increasese0
- Qualifier
- except at the third cut in the first seasone0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Significant increases were appeared in plant height (cm), number of tillers/m2, number of leaves/m2, and leaf area index during the two growing seasons as nitrogen fertilization rates increased except at the third cut in the first season for plant height (cm) and number of tillers/m2”
t0“pearl millet (Pennisetum galucum)”
Claim · model-written summary
Nitrogen rate did not significantly affect leaf to stem ratio.
- Taxon
- pearl milletCenchrus americanust0
- Outcome
- leaf/stem ratioe0
- Direction
- not affectede0
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“leaf/stem ratio was not affected significantly during the two growing seasons”
t0“pearl millet (Pennisetum galucum)”
Claim · model-written summary
Green forage yield rose with nitrogen rates except at the third cut of the first season.
- Taxon
- pearl milletCenchrus americanust0
- Treatment
- nitrogen application ratese0
- Outcome
- Green forage yield/fede0
- Direction
- increasede0
- Qualifier
- except at the third cut of the first season of studye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Green forage yield/fed was significantly increased as nitrogen application rates increased during the two growing seasons except at the third cut of the first season of study”
t0“pearl millet (Pennisetum galucum)”
Claim · model-written summary
Nitrogen up to 75 kg N/fed increased dry forage yield in the specified cuts and combined results.
- Taxon
- pearl milletCenchrus americanust0
- Treatment
- nitrogen fertilization rates up to 75 kg N/fede0
- Outcome
- dry forage yielde0
- Direction
- increasese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increasing nitrogen fertilization rates up to 75 kg N/fed caused significant increases in dry forage yield during the three collected cuts in the second season of study and the second cut during the first season of study as well as in the combined results”
t0“pearl millet (Pennisetum galucum)”
Claim · model-written summary
A 10 cm cutting height produced taller plants than 20 cm in specified cuts.
- Taxon
- pearl milletCenchrus americanust0
- Treatment
- 10 cm as cutting heighte0
- Outcome
- plant heighte0
- Direction
- increasede0
- Comparator
- 20 cm above the soil surfacee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“plant height increased at 10 cm as cutting height than at 20 cm above the soil surface”
t0“pearl millet (Pennisetum galucum)”
Claim · model-written summary
Cutting height affected tiller number, with higher counts at 20 cm in second and third cuts.
- Taxon
- pearl milletCenchrus americanust0
- Treatment
- 20 cm cutting heighte0
- Outcome
- number of tillers/m2e0
- Direction
- higheste0
- Comparator
- 10 cme0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The highest cut of number of tillers/m2 was scored at 20 cm cutting height than those at 10 cm in the second and third cuts during the two growing seasons”
t0“pearl millet (Pennisetum galucum)”
Claim · model-written summary
Cutting height significantly influenced leaves per area and leaf area index, subject to cut exceptions.
- Taxon
- pearl milletCenchrus americanust0
- Treatment
- cutting heighte0
- Outcome
- number of leaves/m2 as well as leaf area indexe0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A number of leaves/m2 as well as leaf area index were influenced significantly as cutting height increased during the two growing seasons except in the second and third cuts during 2009 or the third cut during 2010 for number of leaves/m2 and in the second cut of the first season (2009) and the third cut during 2010 for leaf area index”
t0“pearl millet (Pennisetum galucum)”
Claim · model-written summary
Cutting height significantly affected leaf to stem ratio in specified cuts.
- Taxon
- pearl milletCenchrus americanust0
- Treatment
- cutting heighte0
- Outcome
- leaf/stem ratioe0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Significant effects were noticed in leaf/stem ratio as cutting height differed in the second or third cut in 2009 and in the three collected cuts in combined analysis”
t0“pearl millet (Pennisetum galucum)”
Claim · model-written summary
Cutting height significantly affected green and dry forage yields, with a dry yield exception.
- Taxon
- pearl milletCenchrus americanust0
- Treatment
- cutting heighte0
- Outcome
- Green forage yield, dry forage yield/feddane0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Green forage yield, dry forage yield/feddan increase significantly as cutting height differed during the two growing seasons as well as the combined results except in the first cut during the first season of study for dry forage yield”
t0“pearl millet (Pennisetum galucum)”
Claim · model-written summary
The nitrogen by cutting-height combination of 60–75 kg N/fed and 20 cm yielded the highest forage yield, 30.7 ton/fed.
- Taxon
- pearl milletCenchrus americanust0
- Treatment
- adding 60–75 kg N/fed and 20 cm as cutting heighte0
- Outcome
- yielde0
- Direction
- higheste0
- Value
- 30.7 ton/fede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Green forage yield as well as dry forage yield was significantly affected by the interaction between nitrogen fertilization rates and cutting height, where the highest yield was detected with adding 60–75 kg N/fed and 20 cm as cutting height (30.7 ton/fed)”
t0“pearl millet (Pennisetum galucum)”
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