Abstract
Two field experiments were conducted at the Experimental Farm, Gemmeiza Agriculture Research station, Agricultural Research Center white maize (ARC), Egypt during two growing seasons (2014 and 2015), to study the response of two maize hybrids i.e., white maize single cross 128 and yellow maize single cross 176 to four nitrogen fertilizer levels i.e. 0, 45, 90 and 135 kg N/fad., and three phosphorus fertilizer levels i.e. 0, 15.5 and 31 kg P2O5/fad. Concerning the obtained results, SC 128 outyielded SC 176 in grain and biological yields (combined data) due to superiority in days to 50% tassiling and silking, leaf chlorophyll content, ear leaf area, leaf area index, relative photosynthetic potential for stover yield/plant, ear length and diameter, stem diameter, number of grains/row, hundred grain weight as well as grain and stover yields/plant, while SC. 176 gave the highest mean for each of plant height and relative photosynthetic potential for grain yield/plant. No significant differences among maize hybrid could be detected in relative photosynthetic potential for biological yield/plant, number of rows/ear, ear leaf efficiency and migration coefficient. Data of combined analysis revealed that addition of nitrogen (N) fertilizer and raising its rate up to 135 kg N/fad., was accompanied by asignificant increase in each of leaf chlorophyll content (mg m-2),plant height, leaf area index (LAI), ear length and diameter, stem diameter, number of rows/ear, number of grains/row, hundred grain weight, grain and stover yields/plant, ear leaf efficacy and migration coefficient, but relative photosynthetic potential for both stover and biological yields/plant were decreased. Increase of phosphorus (P) level up to 31 kg P2O5/fad., was followed by a significant increase in grain yield/fad., and almost all their attributes, but relative photosynthetic potential for both stover and biological yields/plant were decreased. Meantime, ear diameter responded to phosphorus addition up to 15.5 kg P2O5/fad., however, days to 50% tassling and silking were not significantly affected by varying phosphorus levels according to combined analysis. In almost cases, maize hybrid SC. 128 was more efficient and more responsive than SC. 176, where the former was is need to 135 kg N/fad., and 31 kg P2O5/fad., in order to maximize the grain yield to only 42.8 ardab/fad.
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Claims 14
Claim · model-written summary
SC 128 exceeded SC 176 in grain and biological yields.
Zea maysOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“SC 128 outyielded SC 176 in grain and biological yields (combined data)”
t0“MAIZE HYBRIDS”
Claim · model-written summary
SC 128 exceeded SC 176 in the listed phenology, leaf, ear, grain and stover traits.
- Material
- SC 128e1
- Outcome
- leaf chlorophyll content, ear leaf area, leaf area indexe0
- Direction
- superioritye0
- Comparator
- SC 176e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“due to superiority in days to 50% tassiling and silking, leaf chlorophyll content, ear leaf area, leaf area index, relative photosynthetic potential for stover yield/plant, ear length and diameter, stem diameter, number of grains/row, hundred grain weight as well as grain and stover yields/plant”
e1“SC 128 outyielded SC 176”
t0“MAIZE HYBRIDS”
Claim · model-written summary
SC 176 had the highest plant height and relative photosynthetic potential for grain yield.
- Material
- SC. 176e0
- Outcome
- plant height and relative photosynthetic potential for grain yield/plante0
- Direction
- higheste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“SC. 176 gave the highest mean for each of plant height and relative photosynthetic potential for grain yield/plant.”
t0“MAIZE HYBRIDS”
Claim · model-written summary
Hybrids did not differ significantly in biological yield photosynthetic potential, rows per ear, ear leaf efficiency or migration coefficient.
- Outcome
- relative photosynthetic potential for biological yield/plant, number of rows/ear, ear leaf efficiency and migration coefficiente0
- Direction
- No significant differencese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“No significant differences among maize hybrid could be detected in relative photosynthetic potential for biological yield/plant, number of rows/ear, ear leaf efficiency and migration coefficient.”
t0“MAIZE HYBRIDS”
Claim · model-written summary
Nitrogen up to 135 kg N/fad. significantly increased chlorophyll, stature and leaf area index.
- Treatment
- nitrogen (N) fertilizer and raising its rate up to 135 kg N/fad.e0
- Outcome
- leaf chlorophyll content (mg m-2),plant height, leaf area index (LAI)e0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“addition of nitrogen (N) fertilizer and raising its rate up to 135 kg N/fad., was accompanied by asignificant increase in each of leaf chlorophyll content (mg m-2),plant height, leaf area index (LAI)”
t0“MAIZE HYBRIDS”
Claim · model-written summary
Nitrogen up to 135 kg N/fad. significantly increased ear and stem traits.
- Treatment
- nitrogen (N) fertilizer and raising its rate up to 135 kg N/fad.e0
- Outcome
- ear length and diameter, stem diametere0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“addition of nitrogen (N) fertilizer and raising its rate up to 135 kg N/fad., was accompanied by asignificant increase in each of leaf chlorophyll content (mg m-2),plant height, leaf area index (LAI), ear length and diameter, stem diameter, number of rows/ear, number of grains/row, hundred grain weight, grain and stover yields/plant, ear leaf efficacy and migration coefficient”
t0“MAIZE HYBRIDS”
Claim · model-written summary
Nitrogen up to 135 kg N/fad. significantly increased rows, grains and hundred-grain weight.
- Treatment
- nitrogen (N) fertilizer and raising its rate up to 135 kg N/fad.e0
- Outcome
- number of rows/ear, number of grains/row, hundred grain weighte0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“addition of nitrogen (N) fertilizer and raising its rate up to 135 kg N/fad., was accompanied by asignificant increase in each of leaf chlorophyll content (mg m-2),plant height, leaf area index (LAI), ear length and diameter, stem diameter, number of rows/ear, number of grains/row, hundred grain weight”
t0“MAIZE HYBRIDS”
Claim · model-written summary
Nitrogen up to 135 kg N/fad. significantly increased grain and stover yields, ear leaf efficacy and migration coefficient.
- Treatment
- nitrogen (N) fertilizer and raising its rate up to 135 kg N/fad.e0
- Outcome
- grain and stover yields/plant, ear leaf efficacy and migration coefficiente0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“addition of nitrogen (N) fertilizer and raising its rate up to 135 kg N/fad., was accompanied by asignificant increase in each of leaf chlorophyll content (mg m-2),plant height, leaf area index (LAI), ear length and diameter, stem diameter, number of rows/ear, number of grains/row, hundred grain weight, grain and stover yields/plant, ear leaf efficacy and migration coefficient”
t0“MAIZE HYBRIDS”
Claim · model-written summary
Phosphorus up to 31 kg P2O5/fad. significantly increased grain yield and almost all attributes.
- Treatment
- phosphorus (P) level up to 31 kg P2O5/fad.e0
- Outcome
- grain yield/fad., and almost all their attributese0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increase of phosphorus (P) level up to 31 kg P2O5/fad., was followed by a significant increase in grain yield/fad., and almost all their attributes”
t0“MAIZE HYBRIDS”
Claim · model-written summary
Phosphorus decreased photosynthetic potential for stover and biological yields.
- Treatment
- phosphorus (P) level up to 31 kg P2O5/fad.e0
- Outcome
- relative photosynthetic potential for both stover and biological yields/plante0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increase of phosphorus (P) level up to 31 kg P2O5/fad., was followed by a significant increase in grain yield/fad., and almost all their attributes, but relative photosynthetic potential for both stover and biological yields/plant were decreased.”
t0“MAIZE HYBRIDS”
Claim · model-written summary
Ear diameter responded to phosphorus up to 15.5 kg P2O5/fad.
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“ear diameter responded to phosphorus addition up to 15.5 kg P2O5/fad.”
t0“MAIZE HYBRIDS”
Claim · model-written summary
Phosphorus levels did not significantly affect days to 50% tasseling or silking.
- Treatment
- varying phosphorus levelse0
- Outcome
- days to 50% tassling and silkinge0
- Direction
- not significantly affectede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“days to 50% tassling and silking were not significantly affected by varying phosphorus levels”
t0“MAIZE HYBRIDS”
Claim · model-written summary
SC. 128 was generally more efficient and responsive than SC. 176.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“maize hybrid SC. 128 was more efficient and more responsive than SC. 176”
t0“MAIZE HYBRIDS”
Claim · model-written summary
SC. 128 reached a maximum grain yield of 42.8 ardab/fad. with 135 kg N/fad. and 31 kg P2O5/fad.
- Material
- SC. 128e1
- Treatment
- 135 kg N/fad., and 31 kg P2O5/fad.e0
- Outcome
- grain yielde0
- Direction
- maximizee0
- Value
- 42.8 ardab/fad.e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the former was is need to 135 kg N/fad., and 31 kg P2O5/fad., in order to maximize the grain yield to only 42.8 ardab/fad.”
e1“maize hybrid SC. 128 was more efficient”
t0“MAIZE HYBRIDS”
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See all 2,185 papers →8 of 9 groups shown: named compounds and organisms first, then groups whose results differ (checked claim by claim), then those with positive and negative results, then the smaller groups.
Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.