Abstract
Rice requires nitrogen in larger quantities than any other nutrient, and it is the most critical limiting factor that influences grain yield. But inappropriate sources and management of nitrogen is considered to be the most critical one among the various reasons of low rice productivity. In order to address the problem, an experiment was conducted at the Agronomy Field Laboratory, Bangladesh Agricultural University, Mymensingh, during June to October 2020 to determine the effect of integrated nitrogen management (INM) on weed growth and yield of transplant aman rice. The experiment comprised five aman rice varieties, viz. Binadhan-7 (V1), BRRI dhan56 (V2), BRRI dhan66 (V3), BRRI dhan71 (V4) and BRRI dhan75 (V5) and four nitrogen management approaches: control (no nitrogen) (N0), 100% of recommended dose (RD) of nitrogenous fertilizer as prilled urea (150 kg ha-1) (N1), 2.5 t ha-1 poultry manure + 75% of RD of nitrogenous fertilizer as prilled urea (112.5 kg ha-1) (N2) and application of USG (1.8 g per 4 hills) (N3). Results reveal that maximum weed density and dry weight were found in BRRI dhan56 whereas minimum ones were observed in BRRI dhan66. In case of INM, application of 100% of RD of nitrogenous fertilizer as prilled urea showed maximum weed density and dry weight but minimum ones were found with application of USG. In combine, weed density and dry weight were found highest in BRRI dhan56 with 100% of RD of urea and the lowest weed density was found in BRRI dhan66 with no nitrogen treatment at 20 DAT and in BRRI dhan66 with application of USG at 35 DAT and lowest weed dry weight was obtained from Binadhan-7 with application of USG (1.8 g per 4 hills) at 20 and 35 DAT. Variety Binadhan-7 showed superior performance in terms of yield and yield attributes. Application of USG showed the highest number of grains panicle-1 and grain yield. Interaction of Binadhan-7 with application of USG produced highest number of grains panicle-1 (116.60), highest grain yield (5.21 t ha-1), biological yield (10.94 t ha-1), harvest index (47.65%) and highest BCR (1.57). So, results indicated that Binadhan-7 with application of USG (1.8 g per 4 hills) might be recommended for obtaining highest grain yield with higher nitrogen use efficiency, highest BCR as well as to control weed more effectively in aman season.
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Claims 14
Claim · model-written summary
BRRI dhan56 had maximum weed density and dry weight, while BRRI dhan66 had minimum values.
- Taxon
- Rice
Oryza sativat0 - Material
- BRRI dhan56e0
- Interactor
- weede0weed
- Outcome
- weed density and dry weighte0
- Direction
- maximume0
- Comparator
- BRRI dhan66e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“maximum weed density and dry weight were found in BRRI dhan56 whereas minimum ones were observed in BRRI dhan66”
t0“Transplant Aman Rice”
Claim · model-written summary
Full recommended prilled urea produced maximum weed density and dry weight; USG produced minimum values.
- Taxon
- RiceOryza sativat0
- Treatment
- 100% of RD of nitrogenous fertilizer as prilled ureae0
- Interactor
- weede0weed
- Outcome
- weed density and dry weighte0
- Direction
- maximume0
- Comparator
- application of USGe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“application of 100% of RD of nitrogenous fertilizer as prilled urea showed maximum weed density and dry weight but minimum ones were found with application of USG”
t0“Transplant Aman Rice”
Claim · model-written summary
BRRI dhan56 with full urea had highest weed density and dry weight.
- Taxon
- RiceOryza sativat0
- Material
- BRRI dhan56e0
- Treatment
- 100% of RD of ureae0
- Interactor
- weede0weed
- Outcome
- weed density and dry weighte0
- Direction
- higheste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“weed density and dry weight were found highest in BRRI dhan56 with 100% of RD of urea”
t0“Transplant Aman Rice”
Claim · model-written summary
BRRI dhan66 with no nitrogen had lowest weed density at 20 DAT.
- Taxon
- RiceOryza sativat0
- Material
- BRRI dhan66e0
- Treatment
- no nitrogen treatmente0
- Interactor
- weede0weed
- Outcome
- weed densitye0
- Direction
- loweste0
- Qualifier
- 20 DATe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“lowest weed density was found in BRRI dhan66 with no nitrogen treatment at 20 DAT”
t0“Transplant Aman Rice”
Claim · model-written summary
BRRI dhan66 with USG had lowest weed density at 35 DAT.
- Taxon
- RiceOryza sativat0
- Material
- BRRI dhan66e0
- Treatment
- application of USGe0
- Interactor
- weede1weed
- Outcome
- weed densitye1
- Direction
- loweste1
- Qualifier
- 35 DATe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“BRRI dhan66 with application of USG at 35 DAT”
e1“lowest weed density was found in BRRI dhan66”
t0“Transplant Aman Rice”
Claim · model-written summary
Binadhan-7 with USG had lowest weed dry weight at 20 and 35 DAT.
- Taxon
- RiceOryza sativat0
- Material
- Binadhan-7e0
- Treatment
- application of USG (1.8 g per 4 hills)e0
- Interactor
- weede0weed
- Outcome
- weed dry weighte0
- Direction
- loweste0
- Qualifier
- 20 and 35 DATe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“lowest weed dry weight was obtained from Binadhan-7 with application of USG (1.8 g per 4 hills) at 20 and 35 DAT”
t0“Transplant Aman Rice”
Claim · model-written summary
Binadhan-7 had superior yield and yield attributes.
- Taxon
- RiceOryza sativat0
- Material
- Binadhan-7e0
- Outcome
- yield and yield attributese0
- Direction
- superiore0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Variety Binadhan-7 showed superior performance in terms of yield and yield attributes”
t0“Transplant Aman Rice”
Claim · model-written summary
USG gave the highest grains per panicle and grain yield.
- Taxon
- RiceOryza sativat0
- Treatment
- USGe0
- Outcome
- number of grains panicle-1 and grain yielde0
- Direction
- higheste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Application of USG showed the highest number of grains panicle-1 and grain yield”
t0“Transplant Aman Rice”
Claim · model-written summary
Binadhan-7 with USG produced the highest number of grains panicle-1.
- Taxon
- RiceOryza sativat0
- Material
- Binadhan-7e0
- Treatment
- application of USGe0
- Outcome
- number of grains panicle-1e0
- Direction
- higheste0
- Value
- 116.60e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Interaction of Binadhan-7 with application of USG produced highest number of grains panicle-1 (116.60), highest grain yield (5.21 t ha-1), biological yield (10.94 t ha-1), harvest index (47.65%) and highest BCR (1.57)”
t0“Transplant Aman Rice”
Claim · model-written summary
Binadhan-7 with USG produced the highest grain yield.
- Taxon
- RiceOryza sativat0
- Material
- Binadhan-7e0
- Treatment
- application of USGe0
- Outcome
- grain yielde0
- Direction
- higheste0
- Value
- 5.21 t ha-1e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Interaction of Binadhan-7 with application of USG produced highest number of grains panicle-1 (116.60), highest grain yield (5.21 t ha-1), biological yield (10.94 t ha-1), harvest index (47.65%) and highest BCR (1.57)”
t0“Transplant Aman Rice”
Claim · model-written summary
Binadhan-7 with USG produced the highest biological yield.
- Taxon
- RiceOryza sativat0
- Material
- Binadhan-7e0
- Treatment
- application of USGe0
- Outcome
- biological yielde0
- Direction
- higheste0
- Value
- 10.94 t ha-1e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Interaction of Binadhan-7 with application of USG produced highest number of grains panicle-1 (116.60), highest grain yield (5.21 t ha-1), biological yield (10.94 t ha-1), harvest index (47.65%) and highest BCR (1.57)”
t0“Transplant Aman Rice”
Claim · model-written summary
Binadhan-7 with USG produced the highest harvest index.
- Taxon
- RiceOryza sativat0
- Material
- Binadhan-7e0
- Treatment
- application of USGe0
- Outcome
- harvest indexe0
- Direction
- higheste0
- Value
- 47.65%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Interaction of Binadhan-7 with application of USG produced highest number of grains panicle-1 (116.60), highest grain yield (5.21 t ha-1), biological yield (10.94 t ha-1), harvest index (47.65%) and highest BCR (1.57)”
t0“Transplant Aman Rice”
Claim · model-written summary
Binadhan-7 with USG produced the highest BCR.
- Taxon
- RiceOryza sativat0
- Material
- Binadhan-7e0
- Treatment
- application of USGe0
- Outcome
- BCRe0
- Direction
- higheste0
- Value
- 1.57e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Interaction of Binadhan-7 with application of USG produced highest number of grains panicle-1 (116.60), highest grain yield (5.21 t ha-1), biological yield (10.94 t ha-1), harvest index (47.65%) and highest BCR (1.57)”
t0“Transplant Aman Rice”
Claim · model-written summary
The authors recommend Binadhan-7 with USG to increase grain yield and nitrogen use efficiency, improve BCR, and control weeds.
- Taxon
- RiceOryza sativat0
- Material
- Binadhan-7e0
- Treatment
- application of USG (1.8 g per 4 hills)e0
- Outcome
- obtaining highest grain yield with higher nitrogen use efficiency, highest BCR as well as to control weed more effectivelye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Binadhan-7 with application of USG (1.8 g per 4 hills) might be recommended for obtaining highest grain yield with higher nitrogen use efficiency, highest BCR as well as to control weed more effectively in aman season”
t0“Transplant Aman Rice”
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