Abstract
The present investigation was carried out during 1998 and 1999 seasons at Zarzoora Experimental Station (EL-Beheira governorate) to study the effect of nitrogen level (zero, 100, 120 and 140 kg N/fed) and defoliation on maize yield at IS days after silking (no defoliation, defoliation below topmost ear leaf, defoliation above topmost ear leaf and defoliation of all leaves as well as plant densities (16000. 20000 and 24000 plants/fed.). The experiments were arranged in split-split plot design with three replications. The results obtained in combined analysis were as follows. 1. Planting maize at the rate of 24000 plants/led significantly Increased plant height, barren plants% and lodged and broken plants %. but decreased stem diameter. % plants with two ears, ear length. ear diameter, no. of kernels/row and ear weight. 20000 plants/fed. recorded the highest grain yield, whereas 16000 plants/led gave the lowest. 2. Increasing nitrogen level up to 140 kg Med increased most of the characters of maize under study i.e. plant height, ear height, stem diameter, two-eared plants %, ear length, ear diameter, no. of kerneW row and ear weight. whereas barren plants %. lodged and broken plants % were decreased. Shelling % and no. of rows/oar were not significantly affected. Grain yield increased by 168.6. 214,21 and 220.26 % of unfertilized maize by increasing nitrogen fertilizer to 100, 120 and 140 kg N/fed. respectively. 3. Stem diameter, plants carried two ears %, ear length, ear diameter, no. of kernels/row and ear weight were significantly affected by defoliation treatments, the highest values for these characters were obtained by umiak:dialing of maize plants. While, plant height, ear height, no. of rows/ear and shelling % were not significantly affected by defoliation. Barren plants % and lodged and broken plants % gave
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Claims 12
Claim · model-written summary
The highest density increased plant height, barren plants and lodging or breakage.
- Treatment
- 24000 plants/lede0
- Outcome
- plant height, barren plants% and lodged and broken plants %e0
- Direction
- Increasede0
Zea maysNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Planting maize at the rate of 24000 plants/led significantly Increased plant height, barren plants% and lodged and broken plants %”
Claim · model-written summary
The highest density decreased stem and ear traits.
- Outcome
- stem diameter. % plants with two ears, ear length. ear diameter, no. of kernels/row and ear weighte0
- Direction
- decreasede0
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“but decreased stem diameter. % plants with two ears, ear length. ear diameter, no. of kernels/row and ear weight”
t0“MAIZE”
Claim · model-written summary
20000 plants/fed. had the highest grain yield.
Not reportedValue
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“20000 plants/fed. recorded the highest grain yield”
t0“MAIZE”
Claim · model-written summary
16000 plants/led gave the lowest grain yield.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“16000 plants/led gave the lowest”
t0“MAIZE”
Claim · model-written summary
Nitrogen up to 140 kg Med increased most maize growth and ear traits.
- Treatment
- 140 kg Mede0
- Outcome
- plant height, ear height, stem diameter, two-eared plants %, ear length, ear diameter, no. of kerneW row and ear weighte0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increasing nitrogen level up to 140 kg Med increased most of the characters of maize under study i.e. plant height, ear height, stem diameter, two-eared plants %, ear length, ear diameter, no. of kerneW row and ear weight”
Claim · model-written summary
Nitrogen decreased barren and lodged or broken plant percentages.
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“whereas barren plants %. lodged and broken plants % were decreased”
t0“MAIZE”
Claim · model-written summary
Nitrogen did not significantly affect shelling percentage or rows per ear.
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Shelling % and no. of rows/oar were not significantly affected”
t0“MAIZE”
Claim · model-written summary
100 kg N/fed. increased grain yield 168.6% relative to unfertilized maize.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Grain yield increased by 168.6. 214,21 and 220.26 % of unfertilized maize by increasing nitrogen fertilizer to 100, 120 and 140 kg N/fed. respectively”
Claim · model-written summary
120 kg N/fed. increased grain yield 214,21% relative to unfertilized maize.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Grain yield increased by 168.6. 214,21 and 220.26 % of unfertilized maize by increasing nitrogen fertilizer to 100, 120 and 140 kg N/fed. respectively”
Claim · model-written summary
140 kg N/fed. increased grain yield 220.26% relative to unfertilized maize.
- Treatment
- 140 kg N/fed.e0
- Outcome
- Grain yielde0
- Direction
- increasede0
- Value
- 220.26 %e0
- Comparator
- unfertilized maizee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Grain yield increased by 168.6. 214,21 and 220.26 % of unfertilized maize by increasing nitrogen fertilizer to 100, 120 and 140 kg N/fed. respectively”
Claim · model-written summary
Defoliation significantly affected stem diameter, two-eared plants and ear traits.
- Treatment
- defoliation treatmentse0
- Outcome
- Stem diameter, plants carried two ears %, ear length, ear diameter, no. of kernels/row and ear weighte0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Stem diameter, plants carried two ears %, ear length, ear diameter, no. of kernels/row and ear weight were significantly affected by defoliation treatments”
t0“MAIZE”
Claim · model-written summary
Defoliation did not significantly affect height, rows per ear or shelling.
- Treatment
- defoliatione0
- Outcome
- plant height, ear height, no. of rows/ear and shelling %e0
- Direction
- not significantly affectede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“plant height, ear height, no. of rows/ear and shelling % were not significantly affected by defoliation”
t0“MAIZE”
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