Abstract
Optimum nitrogen application has been a major challenge to enhance agricultural productivity and sustainability in rice cultivation of Nepal. Nitrogen fertilizer must be applied only when necessary and must be based on the crop’s nitrogen requirement. Losses of nitrogen from rice field can cause air pollutant production, global warming and climate change. Leaf Color Chart (LCC) poses potential climate smart practice in rice field. The use of LCC is a low cost and viable method for managing nitrogen in real time, enhancing the nitrogen use efficiency. To demonstrate the effectiveness of LCC based urea application for nitrogen management in rice, a field experiment was conducted at Masala Bali Bikash Kendra, Panchkhal from June to November, 2022. Variety selected for field experimentation was Makawanpur-1. The experiment compared government-recommended urea application with LCC-based application for which field was divided into two equal plots (300 sq m). Morphological growth was measured at different stages of rice and yield was taken at maturity. In rice, LCC-based urea application led to taller plants (128.5 cm) compared to blanket urea application (115.56 cm) at harvest. LCC-based urea application also had 34% more leaves (126) and 54.5% higher effective tiller count (17). Despite the same rate of nitrogen application, yield was 35% higher in LCC based practice (4694.73 kg ha-1) than government recommended practice. Real time nitrogen application in splits based on LCC management led to better plant growth and yield, while fixed-time nitrogen application regardless of crop need in conventional blanket application resulted in nitrogen loss and lower yield. Considering the effect of nitrogen application through LCC management on rice productivity, it's clear that LCC offers valuable chances to enhance nitrogen use efficiency, rice yield, and farmers' profits.
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Claims 6
Claim · model-written summary
LCC-based urea application led to taller rice plants (128.5 cm) than blanket urea application (115.56 cm) at harvest.
- Taxon
- rice
Oryza sativae0 - Material
- Makawanpur-1e3
- Treatment
- LCC-based urea applicatione0
- Outcome
- taller plantse0
- Direction
- tallere0
- Value
- 128.5 cme0
- Qualifier
- 115.56 cme0
- Comparator
- blanket urea applicatione0
- Setting
- Masala Bali Bikash Kendra, Panchkhale4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In rice, LCC-based urea application led to taller plants (128.5 cm) compared to blanket urea application (115.56 cm) at harvest”
e3“Variety selected for field experimentation was Makawanpur-1”
e4“a field experiment was conducted at Masala Bali Bikash Kendra, Panchkhal from June to November, 2022”
Claim · model-written summary
LCC-based urea application gave 34% more rice leaves than blanket urea application.
- Taxon
- riceOryza sativae0
- Material
- Makawanpur-1e3
- Treatment
- LCC-based urea applicatione1
- Outcome
- leavese1
- Direction
- moree1
- Value
- 34%e1
- Comparator
- blanket urea applicatione0
- Setting
- Masala Bali Bikash Kendra, Panchkhale4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“LCC-based urea application also had 34% more leaves (126) and 54.5% higher effective tiller count (17)”
e0“In rice, LCC-based urea application led to taller plants (128.5 cm) compared to blanket urea application (115.56 cm) at harvest”
e3“Variety selected for field experimentation was Makawanpur-1”
e4“a field experiment was conducted at Masala Bali Bikash Kendra, Panchkhal from June to November, 2022”
Claim · model-written summary
LCC-based urea application gave a 54.5% higher effective tiller count than blanket urea application.
- Taxon
- riceOryza sativae0
- Material
- Makawanpur-1e3
- Treatment
- LCC-based urea applicatione1
- Outcome
- effective tiller counte1
- Direction
- highere1
- Value
- 54.5%e1
- Comparator
- blanket urea applicatione0
- Setting
- Masala Bali Bikash Kendra, Panchkhale4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“LCC-based urea application also had 34% more leaves (126) and 54.5% higher effective tiller count (17)”
e0“In rice, LCC-based urea application led to taller plants (128.5 cm) compared to blanket urea application (115.56 cm) at harvest”
e3“Variety selected for field experimentation was Makawanpur-1”
e4“a field experiment was conducted at Masala Bali Bikash Kendra, Panchkhal from June to November, 2022”
Claim · model-written summary
With the same nitrogen rate, yield was 35% higher under the LCC based practice than under the government recommended practice.
- Taxon
- riceOryza sativae0
- Material
- Makawanpur-1e3
- Treatment
- LCC based practicee2
- Outcome
- yielde2
- Direction
- highere2
- Value
- 35%e2
- Qualifier
- 4694.73 kg ha-1e2
- Comparator
- government recommended practicee2
- Setting
- Masala Bali Bikash Kendra, Panchkhale4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“Despite the same rate of nitrogen application, yield was 35% higher in LCC based practice (4694.73 kg ha-1) than government recommended practice”
e0“In rice, LCC-based urea application led to taller plants (128.5 cm) compared to blanket urea application (115.56 cm) at harvest”
e3“Variety selected for field experimentation was Makawanpur-1”
e4“a field experiment was conducted at Masala Bali Bikash Kendra, Panchkhal from June to November, 2022”
Claim · model-written summary
Fixed-time nitrogen application in conventional blanket practice resulted in nitrogen loss, compared with real-time LCC-based splits.
- Taxon
- riceOryza sativae0
- Treatment
- fixed-time nitrogen applicatione5
- Outcome
- nitrogen losse5
- Comparator
- Real time nitrogen application in splits based on LCC managemente5
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“Real time nitrogen application in splits based on LCC management led to better plant growth and yield, while fixed-time nitrogen application regardless of crop need in conventional blanket application resulted in nitrogen loss and lower yield”
e0“In rice, LCC-based urea application led to taller plants (128.5 cm) compared to blanket urea application (115.56 cm) at harvest”
Claim · model-written summary
LCC offers valuable chances to enhance nitrogen use efficiency, rice yield and farmers profits in rice.
- Taxon
- riceOryza sativae6
- Outcome
- nitrogen use efficiencye6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e6“Considering the effect of nitrogen application through LCC management on rice productivity, it's clear that LCC offers valuable chances to enhance nitrogen use efficiency, rice yield, and farmers' profits”
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