Abstract
Two field Experiments were conducted during 2005/2006 and 2006/2007 seasons at the Experimental Farm of the Faculty of Agriculture, Zagazig University, Zagazig, Sharkia Governorate, Egypt. The study aimed to investigate the response of some wheat cultivars namely Giza 168, Gemmiza 7,Gemmiza 9 and Sakha 93 to three seeding rates which were 300, 400 and 500 grains / m2 under three nitrogen sources included ammonium sulphate, ammonium nitrate and urea in both growing seasons. The most important results could be summarized as follows: Wheat cultivars differed significantly regarding their plant height and number of spikes / m2, as well as, grain and straw yields and most of their attributes where Gemmiza 9 followed by Gemmiza 7 recorded higher grain, straw and total yields than Giza 168 and Sakha 93, however, the four wheat cultivars showed closer spike length and harvest index. Increasing planting density from 300 to 400 and 500 grain / m2 significantly increased plant height, number of spikes / m2, grain, straw and total yields / fad but, significantly decreased spike length, number of spikelet / spike, number of grains / spike, thousand grain weight and grain weight / spike. Harvest index was not affected significantly due to raising number of grains / m2. Addition of nitrogen in the form of ammonium sulphate (AS) was superior to all N forms applied where the highest averages were recorded by ammonium sulphate followed by ammonium nitrate (AN) however the lowest averages were recorded by urea (U) in most characters of yield and yield attributes, but thousand grain weight and harvest index were not affected by varying N sources. The significant interaction effects between the studied factors indicated that best yield and yield attributes could be obtained by Gemmiza 9 cultivar when dense planting of 400 or 500 grain / m2 and ammonium sulphate were applied. Grain yield was positively and significantly correlated with plant height, number of spikes / m2, number of spikelets / spike, number of grains / spike, thousand grain weight, grain weight / spike and grain and straw as well as total yields / fad. Results cleared that the highest yield could be obtained from sowing Gemmiza 9 wheat cultivar when planting with 400 or 500 grain / m2 and ammonium sulphate were applied.
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Claims 14
Claim · model-written summary
Wheat cultivars differed significantly in plant height and number of spikes per m2.
- Taxon
- Wheat
Triticum aestivume0 - Material
- Wheat cultivarse0
- Outcome
- plant height and number of spikes / m2e0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Wheat cultivars differed significantly regarding their plant height and number of spikes / m2, as well as, grain and straw yields”
Claim · model-written summary
Wheat cultivars differed significantly in grain and straw yields.
- Taxon
- WheatTriticum aestivume0
- Material
- Wheat cultivarse0
- Outcome
- grain and straw yieldse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Wheat cultivars differed significantly regarding their plant height and number of spikes / m2, as well as, grain and straw yields”
Claim · model-written summary
Gemmiza 9 recorded higher grain, straw and total yields than Giza 168 and Sakha 93.
- Taxon
- WheatTriticum aestivume1
- Material
- Gemmiza 9e0
- Outcome
- grain, straw and total yieldse0
- Direction
- highere0
- Comparator
- Giza 168 and Sakha 93e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Gemmiza 9 followed by Gemmiza 7 recorded higher grain, straw and total yields than Giza 168 and Sakha 93”
e1“Wheat cultivars differed significantly regarding their plant height and number of spikes / m2, as well as, grain and straw yields”
Claim · model-written summary
The four wheat cultivars showed closer spike length and harvest index.
- Taxon
- wheatTriticum aestivume0
- Material
- four wheat cultivarse0
- Outcome
- spike length and harvest indexe0
- Direction
- closere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the four wheat cultivars showed closer spike length and harvest index”
Claim · model-written summary
Increasing planting density from 300 to 400 and 500 grains per m2 significantly increased plant height and number of spikes per m2.
- Taxon
- WheatTriticum aestivume1
- Treatment
- Increasing planting density from 300 to 400 and 500 grain / m2e0
- Outcome
- plant height, number of spikes / m2e0
- Direction
- increasede0
- Comparator
- 300e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increasing planting density from 300 to 400 and 500 grain / m2 significantly increased plant height, number of spikes / m2, grain, straw and total yields”
e1“Wheat cultivars differed significantly regarding their plant height and number of spikes / m2, as well as, grain and straw yields”
Claim · model-written summary
Increasing planting density significantly increased grain, straw and total yields.
- Taxon
- WheatTriticum aestivume1
- Treatment
- Increasing planting density from 300 to 400 and 500 grain / m2e0
- Outcome
- grain, straw and total yieldse0
- Direction
- increasede0
- Comparator
- 300e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increasing planting density from 300 to 400 and 500 grain / m2 significantly increased plant height, number of spikes / m2, grain, straw and total yields”
e1“Wheat cultivars differed significantly regarding their plant height and number of spikes / m2, as well as, grain and straw yields”
Claim · model-written summary
Increasing planting density significantly decreased spike length, number of spikelets per spike and number of grains per spike.
- Taxon
- WheatTriticum aestivume2
- Treatment
- Increasing planting density from 300 to 400 and 500 grain / m2e0
- Outcome
- spike length, number of spikelet / spike, number of grains / spikee1
- Direction
- decreasede1
- Comparator
- 300e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increasing planting density from 300 to 400 and 500 grain / m2 significantly increased plant height”
e1“significantly decreased spike length, number of spikelet / spike, number of grains / spike, thousand grain weight and grain weight / spike”
e2“Wheat cultivars differed significantly regarding their plant height and number of spikes / m2, as well as, grain and straw yields”
Claim · model-written summary
Increasing planting density significantly decreased thousand grain weight and grain weight per spike.
- Taxon
- WheatTriticum aestivume2
- Treatment
- Increasing planting density from 300 to 400 and 500 grain / m2e0
- Outcome
- thousand grain weight and grain weight / spikee1
- Direction
- decreasede1
- Comparator
- 300e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increasing planting density from 300 to 400 and 500 grain / m2 significantly increased plant height”
e1“significantly decreased spike length, number of spikelet / spike, number of grains / spike, thousand grain weight and grain weight / spike”
e2“Wheat cultivars differed significantly regarding their plant height and number of spikes / m2, as well as, grain and straw yields”
Claim · model-written summary
Harvest index was not significantly affected by raising the number of grains per m2.
- Taxon
- WheatTriticum aestivume1
- Treatment
- raising number of grains / m2e0
- Outcome
- Harvest indexe0
- Direction
- not affected significantlye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Harvest index was not affected significantly due to raising number of grains / m2”
e1“Wheat cultivars differed significantly regarding their plant height and number of spikes / m2, as well as, grain and straw yields”
Claim · model-written summary
Ammonium sulphate was superior to all other N forms applied for yield and yield attributes.
- Taxon
- WheatTriticum aestivume2
- Treatment
- ammonium sulphatee0
- Outcome
- yield and yield attributese1
- Direction
- superiore0
- Comparator
- all N forms appliede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Addition of nitrogen in the form of ammonium sulphate (AS) was superior to all N forms applied”
e1“the lowest averages were recorded by urea (U) in most characters of yield and yield attributes”
e2“Wheat cultivars differed significantly regarding their plant height and number of spikes / m2, as well as, grain and straw yields”
Claim · model-written summary
Urea gave the lowest yield and yield attributes among the N sources.
- Taxon
- WheatTriticum aestivume1
- Treatment
- ureae0
- Outcome
- yield and yield attributese0
- Direction
- loweste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the lowest averages were recorded by urea (U) in most characters of yield and yield attributes”
e1“Wheat cultivars differed significantly regarding their plant height and number of spikes / m2, as well as, grain and straw yields”
Claim · model-written summary
Thousand grain weight and harvest index were not affected by the N source.
- Taxon
- WheatTriticum aestivume1
- Treatment
- varying N sourcese0
- Outcome
- thousand grain weight and harvest indexe0
- Direction
- not affectede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“thousand grain weight and harvest index were not affected by varying N sources”
e1“Wheat cultivars differed significantly regarding their plant height and number of spikes / m2, as well as, grain and straw yields”
Claim · model-written summary
Gemmiza 9 gave the best yield when sown at 400 or 500 grains per m2 with ammonium sulphate.
- Taxon
- WheatTriticum aestivume1
- Material
- Gemmiza 9 cultivare0
- Treatment
- dense planting of 400 or 500 grain / m2 and ammonium sulphatee0
- Outcome
- best yield and yield attributese0
- Direction
- beste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“best yield and yield attributes could be obtained by Gemmiza 9 cultivar when dense planting of 400 or 500 grain / m2 and ammonium sulphate were applied”
e1“Wheat cultivars differed significantly regarding their plant height and number of spikes / m2, as well as, grain and straw yields”
Claim · model-written summary
Grain yield was positively and significantly correlated with plant height, spike number, spikelet number, grain number, thousand grain weight and grain weight per spike.
- Taxon
- WheatTriticum aestivume1
- Outcome
- grain yielde0
- Direction
- positivelye0
- Comparator
- plant height, number of spikes / m2, number of spikelets / spike, number of grains / spike, thousand grain weight, grain weight / spikee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Grain yield was positively and significantly correlated with plant height, number of spikes / m2, number of spikelets / spike, number of grains / spike, thousand grain weight, grain weight / spike and grain and straw as well as total yields / fad”
e1“Wheat cultivars differed significantly regarding their plant height and number of spikes / m2, as well as, grain and straw yields”
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