Abstract
Two field experiments were carried out in Tegzerte Research Station; Desert Research Center, Tegzerte, Siwa Oasis during winter seasons of 2002/2003 and 2004/2004 years to study the effect of nitrogen fertilization levels as (0, 80 and 100 Kg N. fed-1) and phosphorus fertilization levels (0, 15 and 31Kg P205 fed-1) and wheat seeding rates (70, 80 or 90 kg. fed-1) on wheat production and weed control. Results indicated that increasing phosphorus and nitrogen fertilization levels as well as seeding rates led to increase significantly wheat growth, yield and its components i.e (plant height, spike length, number of spiklets per spike, seed index as 1000 grain weight, number of spikes/m2, grain, straw and biological yields), while fresh and dry weights of associated weeds were reduced as a result of applying the treatments. On the other hand, number of tillers /plant showed significant increase as a result of elevating both nitrogen and phosphorus fertilization, while it demonstrated significant reduction by increasing seeding rates. Number of tillers per plant was significantly increased as a result of applying the following first order interactions (31 kg P205 fed-1 × 0 kg N.fed-1), (0 kg N.fed-1 × 90 kg grains .fed-1) and (31 kg P205 fed-1 × 90 kg grains.fed-1). All the first order interactions i.e (phosphorus × nitrogen fertilization levels), (nitrogen fertilization levels × seeding rates) and (phosphorus fertilization levels × seeding rates), increased significantly all the studied characters. Regarding the second order interaction, higher values of wheat yields and its attributes, as well as higher reduction of fresh and dry weights of associated weeds were obtained from the interaction between (31 kg P.fed-1 × 100 kg N.fed-1 ×90 kg grains.fed-1). While higher number of tillers per plant was obtained from the interaction between (31 kg P205 fed-1 × 100 kg N.fed-1 ×70 kg grains.fed-1).
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Claims 13
Claim · model-written summary
Higher phosphorus and nitrogen fertilization and seeding rates significantly increased wheat growth and yield components.
- Taxon
- WHEAT
Triticum aestivumt0 - Treatment
- increasing phosphorus and nitrogen fertilization levels as well as seeding ratese0
- Outcome
- wheat growth, yield and its componentse0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“increasing phosphorus and nitrogen fertilization levels as well as seeding rates led to increase significantly wheat growth, yield and its components i.e (plant height, spike length, number of spiklets per spike, seed index as 1000 grain weight, number of spikes/m2, grain, straw and biological yields)”
t0“WHEAT”
Claim · model-written summary
These fertilizer and seeding treatments reduced fresh and dry weights of associated weeds.
- Taxon
- WHEATTriticum aestivumt0
- Treatment
- the treatmentse0
- Interactor
- associated weedse0weed
- Outcome
- fresh and dry weights of associated weedse0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“fresh and dry weights of associated weeds were reduced as a result of applying the treatments”
t0“WHEAT”
Claim · model-written summary
Increasing nitrogen and phosphorus fertilization significantly increased tillers per plant.
- Taxon
- WHEATTriticum aestivumt0
- Treatment
- elevating both nitrogen and phosphorus fertilizatione0
- Outcome
- number of tillers /plante0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“number of tillers /plant showed significant increase as a result of elevating both nitrogen and phosphorus fertilization”
t0“WHEAT”
Claim · model-written summary
Increasing seeding rates significantly reduced tillers per plant.
- Taxon
- WHEATTriticum aestivumt0
- Treatment
- increasing seeding ratese0
- Outcome
- number of tillers /plante0
- Direction
- reductione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“number of tillers /plant showed significant increase as a result of elevating both nitrogen and phosphorus fertilization, while it demonstrated significant reduction by increasing seeding rates”
t0“WHEAT”
Claim · model-written summary
The 31 kg P205 fed-1 × 0 kg N.fed-1 interaction significantly increased tillers per plant.
- Taxon
- WHEATTriticum aestivumt0
- Treatment
- 31 kg P205 fed-1 × 0 kg N.fed-1e0
- Outcome
- Number of tillers per plante0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Number of tillers per plant was significantly increased as a result of applying the following first order interactions (31 kg P205 fed-1 × 0 kg N.fed-1), (0 kg N.fed-1 × 90 kg grains .fed-1) and (31 kg P205 fed-1 × 90 kg grains.fed-1)”
t0“WHEAT”
Claim · model-written summary
The 0 kg N.fed-1 × 90 kg grains .fed-1 interaction significantly increased tillers per plant.
- Taxon
- WHEATTriticum aestivumt0
- Treatment
- 0 kg N.fed-1 × 90 kg grains .fed-1e0
- Outcome
- Number of tillers per plante0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Number of tillers per plant was significantly increased as a result of applying the following first order interactions (31 kg P205 fed-1 × 0 kg N.fed-1), (0 kg N.fed-1 × 90 kg grains .fed-1) and (31 kg P205 fed-1 × 90 kg grains.fed-1)”
t0“WHEAT”
Claim · model-written summary
The 31 kg P205 fed-1 × 90 kg grains.fed-1 interaction significantly increased tillers per plant.
- Taxon
- WHEATTriticum aestivumt0
- Treatment
- 31 kg P205 fed-1 × 90 kg grains.fed-1e0
- Outcome
- Number of tillers per plante0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Number of tillers per plant was significantly increased as a result of applying the following first order interactions (31 kg P205 fed-1 × 0 kg N.fed-1), (0 kg N.fed-1 × 90 kg grains .fed-1) and (31 kg P205 fed-1 × 90 kg grains.fed-1)”
t0“WHEAT”
Claim · model-written summary
First-order phosphorus × nitrogen interactions significantly increased studied characters.
- Taxon
- WHEATTriticum aestivumt0
- Treatment
- phosphorus × nitrogen fertilization levelse0
- Outcome
- all the studied characterse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“All the first order interactions i.e (phosphorus × nitrogen fertilization levels), (nitrogen fertilization levels × seeding rates) and (phosphorus fertilization levels × seeding rates), increased significantly all the studied characters”
t0“WHEAT”
Claim · model-written summary
First-order nitrogen × seeding-rate interactions significantly increased studied characters.
- Taxon
- WHEATTriticum aestivumt0
- Treatment
- nitrogen fertilization levels × seeding ratese0
- Outcome
- all the studied characterse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“All the first order interactions i.e (phosphorus × nitrogen fertilization levels), (nitrogen fertilization levels × seeding rates) and (phosphorus fertilization levels × seeding rates), increased significantly all the studied characters”
t0“WHEAT”
Claim · model-written summary
First-order phosphorus × seeding-rate interactions significantly increased studied characters.
- Taxon
- WHEATTriticum aestivumt0
- Treatment
- phosphorus fertilization levels × seeding ratese0
- Outcome
- all the studied characterse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“All the first order interactions i.e (phosphorus × nitrogen fertilization levels), (nitrogen fertilization levels × seeding rates) and (phosphorus fertilization levels × seeding rates), increased significantly all the studied characters”
t0“WHEAT”
Claim · model-written summary
The 31 kg P.fed-1 × 100 kg N.fed-1 ×90 kg grains.fed-1 combination produced higher wheat yield and attributes.
- Taxon
- WHEATTriticum aestivumt0
- Treatment
- 31 kg P.fed-1 × 100 kg N.fed-1 ×90 kg grains.fed-1e0
- Outcome
- wheat yields and its attributese0
- Direction
- highere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“higher values of wheat yields and its attributes, as well as higher reduction of fresh and dry weights of associated weeds were obtained from the interaction between (31 kg P.fed-1 × 100 kg N.fed-1 ×90 kg grains.fed-1)”
t0“WHEAT”
Claim · model-written summary
The 31 kg P.fed-1 × 100 kg N.fed-1 ×90 kg grains.fed-1 combination reduced associated weed weights more.
- Taxon
- WHEATTriticum aestivumt0
- Treatment
- 31 kg P.fed-1 × 100 kg N.fed-1 ×90 kg grains.fed-1e0
- Interactor
- associated weedse0weed
- Outcome
- fresh and dry weights of associated weedse0
- Direction
- higher reductione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“higher values of wheat yields and its attributes, as well as higher reduction of fresh and dry weights of associated weeds were obtained from the interaction between (31 kg P.fed-1 × 100 kg N.fed-1 ×90 kg grains.fed-1)”
t0“WHEAT”
Claim · model-written summary
The 31 kg P205 fed-1 × 100 kg N.fed-1 ×70 kg grains.fed-1 combination produced more tillers per plant.
- Taxon
- WHEATTriticum aestivumt0
- Treatment
- 31 kg P205 fed-1 × 100 kg N.fed-1 ×70 kg grains.fed-1e0
- Outcome
- number of tillers per plante0
- Direction
- highere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“higher number of tillers per plant was obtained from the interaction between (31 kg P205 fed-1 × 100 kg N.fed-1 ×70 kg grains.fed-1)”
t0“WHEAT”
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