Abstract
Nitrogen (N) and zinc (Zn) are the two major yield-limiting factors of flooded rice cultivation systems. Both nutrients interact and affect availability of the other in alkaline calcareous soils. In order to evaluate the interactive effects of N and Zn on yield and quality of Basmati rice, a field study was conducted at Sheikhupura (Site I) and Sargodha (Site II), Pakistan. Nitrogen treatments (0, 40, 80, 120 and 160 kg/ha) were kept in main blocks while zinc levels (0, 8, 10, 12 and 14 kg/ha) were kept in sub blocks. The main effects of N and Zn levels were significant for grain yield and yield attributes. N and Zn interaction significantly improved the grain yield, yield components and all kernel quality parameters, except kernel amylose contents. Combined application of 120 kg N/ha and 14 kg Zn/ha produced the maximum grain yields at both sites (6.12 and 5.78 t/ha). This combination also yielded the maximum kernel lengths and widths, water absorption ratio and kernel protein contents. There was a significant positive correlation between grain yield and total dry matter, panicle-bearing tillers, spikelets panicle, grain weight, and harvest index. Application of 160 kg N/ha was detrimental to yield and quality attributes and reduced the agronomic efficiency of N use at both sites. Site comparison showed that soil pH and soil nutrient contents play a significant role in determination of the optimum nitrogen and zinc fertilizer doses for maximum yields.
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Claims 10
Claim · model-written summary
Combined 120 kg N/ha and 14 kg Zn/ha gave the maximum grain yields of Basmati rice at both sites.
- Taxon
- Basmati ricee0
- Treatment
- Combined application of 120 kg N/ha and 14 kg Zn/hae1
- Outcome
- grain yieldse1
- Direction
- maximume1
- Value
- 6.12 and 5.78 t/hae1
- Setting
- Sheikhupura (Site I) and Sargodha (Site II), Pakistane2
Not reportedComparator
Verbatim
e0“interactive effects of N and Zn on yield and quality of Basmati rice”
e1“Combined application of 120 kg N/ha and 14 kg Zn/ha produced the maximum grain yields at both sites (6.12 and 5.78 t/ha)”
e2“a field study was conducted at Sheikhupura (Site I) and Sargodha (Site II), Pakistan”
Claim · model-written summary
N and Zn interaction significantly improved grain yield of Basmati rice.
- Taxon
- Basmati ricee0
- Treatment
- N and Zn interactione2
- Outcome
- grain yielde2
- Direction
- significantly improvede2
Not reportedComparator
Verbatim
e0“interactive effects of N and Zn on yield and quality of Basmati rice”
e2“N and Zn interaction significantly improved the grain yield, yield components and all kernel quality parameters, except kernel amylose contents”
Claim · model-written summary
N and Zn interaction significantly improved yield components of Basmati rice.
- Taxon
- Basmati ricee0
- Treatment
- N and Zn interactione2
- Outcome
- yield componentse2
- Direction
- significantly improvede2
Not reportedComparator
Verbatim
e0“interactive effects of N and Zn on yield and quality of Basmati rice”
e2“N and Zn interaction significantly improved the grain yield, yield components and all kernel quality parameters, except kernel amylose contents”
Claim · model-written summary
N and Zn interaction significantly improved kernel quality parameters of Basmati rice, except kernel amylose content.
- Taxon
- Basmati ricee0
- Treatment
- N and Zn interactione2
- Outcome
- all kernel quality parameterse2
- Direction
- significantly improvede2
- Qualifier
- except kernel amylose contentse2
Not reportedComparator
Verbatim
e0“interactive effects of N and Zn on yield and quality of Basmati rice”
e2“N and Zn interaction significantly improved the grain yield, yield components and all kernel quality parameters, except kernel amylose contents”
Claim · model-written summary
Grain yield was significantly positively correlated with total dry matter, panicle-bearing tillers and spikelets per panicle in Basmati rice.
Verbatim
e0“interactive effects of N and Zn on yield and quality of Basmati rice”
e3“There was a significant positive correlation between grain yield and total dry matter, panicle-bearing tillers, spikelets panicle, grain weight, and harvest index”
Claim · model-written summary
Grain yield was significantly positively correlated with grain weight and harvest index in Basmati rice.
Verbatim
e0“interactive effects of N and Zn on yield and quality of Basmati rice”
e3“There was a significant positive correlation between grain yield and total dry matter, panicle-bearing tillers, spikelets panicle, grain weight, and harvest index”
Claim · model-written summary
Application of 160 kg N/ha was detrimental to yield and quality attributes of Basmati rice.
- Taxon
- Basmati ricee0
- Treatment
- Application of 160 kg N/hae4
- Outcome
- yield and quality attributese4
- Direction
- detrimentale4
Not reportedComparator
Verbatim
e0“interactive effects of N and Zn on yield and quality of Basmati rice”
e4“Application of 160 kg N/ha was detrimental to yield and quality attributes and reduced the agronomic efficiency of N use at both sites”
Claim · model-written summary
Application of 160 kg N/ha reduced the agronomic efficiency of N use in Basmati rice.
- Taxon
- Basmati ricee0
- Treatment
- Application of 160 kg N/hae4
- Outcome
- agronomic efficiency of N usee4
- Direction
- reducede4
Not reportedComparator
Verbatim
e0“interactive effects of N and Zn on yield and quality of Basmati rice”
e4“Application of 160 kg N/ha was detrimental to yield and quality attributes and reduced the agronomic efficiency of N use at both sites”
Claim · model-written summary
Soil pH and soil nutrient contents play a significant role in determining the optimum N and Zn fertilizer doses for maximum yield of Basmati rice.
- Taxon
- Basmati ricee0
- Treatment
- soil pH and soil nutrient contentse5
- Outcome
- optimum nitrogen and zinc fertilizer dosese5
Not reportedDirection
Verbatim
e0“interactive effects of N and Zn on yield and quality of Basmati rice”
e5“Site comparison showed that soil pH and soil nutrient contents play a significant role in determination of the optimum nitrogen and zinc fertilizer doses for maximum yields”
Claim · model-written summary
The main effects of N and Zn levels were significant for grain yield and yield attributes of Basmati rice.
Not reportedComparatorDirection
Verbatim
e0“interactive effects of N and Zn on yield and quality of Basmati rice”
e6“The main effects of N and Zn levels were significant for grain yield and yield attributes”
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