Abstract
To standardize the nitrogen scheduling in DSR, a field was conducted with different Basmati rice varieties with different nitrogen rates and splits at CCS Haryana Agricultural University, Regional Research Station at Karnal, India during rainy kharif seasons of 2014 and 2015. Nitrogen had significant positive effect on basmati rice crop resulting in improvement in plant height, number of tillers and effective tillers, grains/panicle, panicle length, 1000-grain weight, grain yield and straw yield with increase in dose from 90 to 100 and 110 kg ha-1 in succession. Also, the grain yield was further improved with increase in number of splits from three to four. Nitrogen at 110 kg ha-1 with four splits at 0, 20, 40, and 60 days after sowing was realized to be the optimum schedule for attaining maximum grain yield (49.3 & 50.2 q ha-1) and yield attributes. Among basmati varieties, highest grain yield (47.5 & 48.9 q ha-1) was recorded in HB-2 followed by PB-1121 (47.1 & 47.0 q ha-1), PB-1 (43.9 & 44.6 q ha-1) and PB-1509 (42.9 & 43.8 q ha-1) under direct seeding conditions.
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Claims 9
Claim · model-written summary
Increasing nitrogen dose from 90 to 100 and 110 kg ha-1 significantly improved rice growth and yield attributes.
Verbatim
e0“Nitrogen had significant positive effect on basmati rice crop resulting in improvement in plant height, number of tillers and effective tillers, grains/panicle, panicle length, 1000-grain weight, grain yield and straw yield with increase in dose from 90 to 100 and 110 kg ha-1 in succession.”
e1“Nitrogen had significant positive effect on basmati rice crop resulting in improvement in plant height, number of tillers and effective tillers, grains/panicle, panicle length, 1000-grain weight, grain yield and straw yield with increase in dose from 90 to 100 and 110 kg ha-1 in succession.”
Claim · model-written summary
Higher nitrogen dose improved rice grains per panicle, panicle length and 1000-grain weight.
Verbatim
e0“Nitrogen had significant positive effect on basmati rice crop resulting in improvement in plant height, number of tillers and effective tillers, grains/panicle, panicle length, 1000-grain weight, grain yield and straw yield with increase in dose from 90 to 100 and 110 kg ha-1 in succession.”
e1“Nitrogen had significant positive effect on basmati rice crop resulting in improvement in plant height, number of tillers and effective tillers, grains/panicle, panicle length, 1000-grain weight, grain yield and straw yield with increase in dose from 90 to 100 and 110 kg ha-1 in succession.”
Claim · model-written summary
Higher nitrogen dose improved rice grain and straw yield.
Verbatim
e0“Nitrogen had significant positive effect on basmati rice crop resulting in improvement in plant height, number of tillers and effective tillers, grains/panicle, panicle length, 1000-grain weight, grain yield and straw yield with increase in dose from 90 to 100 and 110 kg ha-1 in succession.”
e1“Nitrogen had significant positive effect on basmati rice crop resulting in improvement in plant height, number of tillers and effective tillers, grains/panicle, panicle length, 1000-grain weight, grain yield and straw yield with increase in dose from 90 to 100 and 110 kg ha-1 in succession.”
Claim · model-written summary
Four nitrogen splits further improved grain yield over three splits.
Verbatim
e0“grain yield was further improved with increase in number of splits from three to four.”
e1“Nitrogen had significant positive effect on basmati rice crop resulting in improvement in plant height, number of tillers and effective tillers, grains/panicle, panicle length, 1000-grain weight, grain yield and straw yield with increase in dose from 90 to 100 and 110 kg ha-1 in succession.”
Claim · model-written summary
The 110 kg ha-1 four-split schedule produced maximum grain yield of 49.3 and 50.2 q ha-1.
Not reportedComparator
Verbatim
e0“Nitrogen at 110 kg ha-1 with four splits at 0, 20, 40, and 60 days after sowing was realized to be the optimum schedule for attaining maximum grain yield (49.3 & 50.2 q ha-1) and yield attributes.”
e1“Nitrogen had significant positive effect on basmati rice crop resulting in improvement in plant height, number of tillers and effective tillers, grains/panicle, panicle length, 1000-grain weight, grain yield and straw yield with increase in dose from 90 to 100 and 110 kg ha-1 in succession.”
Claim · model-written summary
HB-2 had the highest grain yield among varieties, at 47.5 and 48.9 q ha-1.
Verbatim
e0“highest grain yield (47.5 & 48.9 q ha-1) was recorded in HB-2 followed by PB-1121 (47.1 & 47.0 q ha-1), PB-1 (43.9 & 44.6 q ha-1) and PB-1509 (42.9 & 43.8 q ha-1) under direct seeding conditions.”
e1“Nitrogen had significant positive effect on basmati rice crop resulting in improvement in plant height, number of tillers and effective tillers, grains/panicle, panicle length, 1000-grain weight, grain yield and straw yield with increase in dose from 90 to 100 and 110 kg ha-1 in succession.”
Claim · model-written summary
PB-1121 grain yield was 47.1 and 47.0 q ha-1.
Not reportedOutcome
Verbatim
e0“PB-1121 (47.1 & 47.0 q ha-1)”
e1“Nitrogen had significant positive effect on basmati rice crop resulting in improvement in plant height, number of tillers and effective tillers, grains/panicle, panicle length, 1000-grain weight, grain yield and straw yield with increase in dose from 90 to 100 and 110 kg ha-1 in succession.”
Claim · model-written summary
PB-1 grain yield was 43.9 and 44.6 q ha-1.
Not reportedOutcome
Verbatim
e0“PB-1 (43.9 & 44.6 q ha-1)”
e1“Nitrogen had significant positive effect on basmati rice crop resulting in improvement in plant height, number of tillers and effective tillers, grains/panicle, panicle length, 1000-grain weight, grain yield and straw yield with increase in dose from 90 to 100 and 110 kg ha-1 in succession.”
Claim · model-written summary
PB-1509 grain yield was 42.9 and 43.8 q ha-1.
Not reportedOutcome
Verbatim
e0“PB-1509 (42.9 & 43.8 q ha-1)”
e1“Nitrogen had significant positive effect on basmati rice crop resulting in improvement in plant height, number of tillers and effective tillers, grains/panicle, panicle length, 1000-grain weight, grain yield and straw yield with increase in dose from 90 to 100 and 110 kg ha-1 in succession.”
The same questions in other papers
nitrogen · yield · Oryza sativa (rice)Positive and negative results
1,802 papers in the same direction as this paper · 193 in the opposite direction · 49 reporting no difference from an alternative
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- positive
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