Abstract
This investigation was carried out during 1998 and 1999 to identify the suitable levels of copper and nitrogen fertilizers for raising the productivity of rice through the enhancement of different physiological criteria. The most important findings revealed that: Foliar application of Cu had highly significant effect on plant height. number of tillers, leaf dry weight. aboveground dry weight. leaf area index (LAI). leaf area ratio (LAR). crop gro'Nth rate (CGR), relative growth rate (RGR) and net assimilation rate (NAR). The highest mean values Vlere recorded when plants were sprayed with copper sulphate at the lellel of 11.5 kglfed. However. increasing level of sprayed Cu resulted in significant reduction in all studied traits al different gro'Nth stages. Soil application of nitrogen had significant posilive effects on all studied growth characteristics. The higher the nilrogen level the higher the mean values recorded for plant height, number of tillers, leaf dry weight. aboveground dry weight, LAI. CGR. RGR and NAR at all growth periods.
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Claims 5
Claim · model-written summary
Foliar copper significantly affected rice height, tillers, dry mass, leaf area and growth rate measures.
- Taxon
- RICE PLANTS
Oryza sativat0 - Treatment
- Foliar application of Cue0
- Outcome
- plant height. number of tillers, leaf dry weighte0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“RICE PLANTS”
e0“Foliar application of Cu had highly significant effect on plant height. number of tillers, leaf dry weight. aboveground dry weight. leaf area index (LAI). leaf area ratio (LAR). crop gro'Nth rate (CGR), relative growth rate (RGR) and net assimilation rate (NAR)”
Claim · model-written summary
Copper sulphate spray at 11.5 kglfed produced the highest means.
- Taxon
- RICE PLANTSOryza sativat0
- Treatment
- sprayed with copper sulphate at the lellel of 11.5 kglfede0
- Outcome
- mean valuese0
- Direction
- higheste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“RICE PLANTS”
e0“The highest mean values Vlere recorded when plants were sprayed with copper sulphate at the lellel of 11.5 kglfed”
Claim · model-written summary
Increasing sprayed copper significantly reduced all studied traits across growth stages.
- Taxon
- RICE PLANTSOryza sativat0
- Treatment
- increasing level of sprayed Cue0
- Outcome
- all studied traitse0
- Direction
- reductione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“RICE PLANTS”
e0“increasing level of sprayed Cu resulted in significant reduction in all studied traits al different gro'Nth stages”
Claim · model-written summary
Soil nitrogen significantly increased studied growth characteristics.
- Taxon
- RICE PLANTSOryza sativat0
- Treatment
- Soil application of nitrogene0
- Outcome
- all studied growth characteristicse0
- Direction
- posilivee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“RICE PLANTS”
e0“Soil application of nitrogen had significant posilive effects on all studied growth characteristics”
Claim · model-written summary
Higher nitrogen levels gave higher height, tiller number, dry mass and growth index means across periods.
- Taxon
- RICE PLANTSOryza sativat0
- Treatment
- nilrogen levele0
- Outcome
- plant height, number of tillers, leaf dry weighte0
- Direction
- highere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“RICE PLANTS”
e0“The higher the nilrogen level the higher the mean values recorded for plant height, number of tillers, leaf dry weight. aboveground dry weight, LAI. CGR. RGR and NAR at all growth periods”
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