Abstract
Two field experiments were conducted at the Rice Research and Training Center. Sakha, Kafr El-Sheikh, Egypt to study the effect of irrigation intervals and the application of farm yard manure alone or in combination with nitrogen fertilizer on Giza 176 rice variety in 1995 and 1996. Irrigation intervals were 3, 6, 9 and 12 days. Urea N/ha rates were zero, 55 and 110 kg and farm yard manure rates were 9.5, 19, 28.5 ton/ha. Dry matter yield, tillers/m2 and plant height were measured at four growth stages namely; mid tillering, maximum tillering, panicle initiation and maturity. Irrigation water used was measured with a calibrated water meter. Results showed that, growth measurments were significantly reduced due to the increase of irrigation intervals up to 12 days. Rice was most sensitive to water deficit during the stages of maximum tillering and panicle initiation than at mid tillering or maturity. Grain yield did not significantly differ when rice was irrigated every 3 or 6 days. However, yield decreased by less than 5% with irrigation every 6 days but about 17% of water consumption was saved. Nitrogen uptake and content were significantly reduced as irrigation interval increased over 3 days. However, water use efficiency was greatest with irrigation every 6 days. The use of chemical nitrogen fertilizer eith alone or combined with farm yard manure was superior to the use of farm yard manure alone.
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Claims 8
Claim · model-written summary
Growth measurements were significantly reduced as irrigation intervals increased up to 12 days.
- Taxon
- rice
Oryza sativat0 - Treatment
- irrigation intervalse2
- Outcome
- growth measurmentse2
- Direction
- reducede2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“PRODUCTION OF RICE”
e2“growth measurments were significantly reduced due to the increase of irrigation intervals up to 12 days”
Claim · model-written summary
Grain yield did not significantly differ when rice was irrigated every 3 or 6 days.
- Taxon
- riceOryza sativae3
- Treatment
- irrigated every 3 or 6 dayse3
- Outcome
- Grain yielde3
- Direction
- did not significantly differe3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“PRODUCTION OF RICE”
e3“Grain yield did not significantly differ when rice was irrigated every 3 or 6 days”
Claim · model-written summary
Yield decreased by less than 5% with irrigation every 6 days.
- Taxon
- riceOryza sativat0
- Treatment
- irrigation every 6 dayse4
- Outcome
- yielde4
- Direction
- decreasede4
- Value
- less than 5%e4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“PRODUCTION OF RICE”
e4“yield decreased by less than 5% with irrigation every 6 days”
Claim · model-written summary
About 17% of water consumption was saved with irrigation every 6 days.
- Taxon
- riceOryza sativat0
- Treatment
- irrigation every 6 dayse4
- Outcome
- water consumptione5
- Direction
- savede5
- Value
- about 17%e5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“PRODUCTION OF RICE”
e4“yield decreased by less than 5% with irrigation every 6 days”
e5“about 17% of water consumption was saved”
Claim · model-written summary
Rice was most sensitive to water deficit during maximum tillering and panicle initiation than at mid tillering or maturity.
- Taxon
- RiceOryza sativae6
- Organ / stage
- maximum tillering and panicle initiatione6
- Treatment
- water deficite6
- Outcome
- sensitive to water deficite6
- Direction
- most sensitivee6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“PRODUCTION OF RICE”
e6“Rice was most sensitive to water deficit during the stages of maximum tillering and panicle initiation than at mid tillering or maturity”
Claim · model-written summary
Nitrogen uptake and content were significantly reduced as irrigation interval increased over 3 days.
- Taxon
- riceOryza sativat0
- Treatment
- irrigation intervale7
- Outcome
- Nitrogen uptake and contente7
- Direction
- reducede7
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“PRODUCTION OF RICE”
e7“Nitrogen uptake and content were significantly reduced as irrigation interval increased over 3 days”
Claim · model-written summary
Water use efficiency was greatest with irrigation every 6 days.
- Taxon
- riceOryza sativat0
- Treatment
- irrigation every 6 dayse1
- Outcome
- water use efficiencye1
- Direction
- greateste1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“PRODUCTION OF RICE”
e1“water use efficiency was greatest with irrigation every 6 days”
Claim · model-written summary
Chemical nitrogen fertilizer, alone or combined with farm yard manure, was superior to farm yard manure alone in rice.
- Taxon
- riceOryza sativat0
- Treatment
- chemical nitrogen fertilizere1
- Outcome
- superiore2
- Direction
- superiore2
- Comparator
- farm yard manure alonee2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“PRODUCTION OF RICE”
e1“The use of chemical nitrogen fertilizer”
e2“was superior to the use of farm yard manure alone”
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