Abstract
Maize requires efficient nitrogen management to maximize productivity and sustainability. This research aimed to establish a critical Leaf Colour Chart (LCC) values for maize under zero tillage and conventional tillage. This research also focuses on evaluating LCC-based nitrogen management versus recommended practices. The experiment was conducted during the winter season of 2016-17 at the National Maize Research Program, Rampur, Chitwan, Nepal. The experiment was performed using a strip plot design with three replications. The main plot factor included two tillage methods (conventional and zero tillage) while the sub-plot factor comprised six nutrient management practices, namely nitrogen omission, recommended dose of nitrogen, nitrogen application at leaf color chart (LCC) values 3 (45 kg N/ha), LCC value 4 (88.33 kg N/ha), LCC value 5 (119.7 kg N/ha), and LCC value 6 (140 kg N/ha). Standard split nitrogen application and LCC-based nitrogen management at LCC 4, 5, and 6 critical values resulted in statistically similar LAI during all dates of observations; however, it was high at 90 days after sowing (DAS). Total dry matter accumulation was significantly higher under LCC-5 at 90 DAS. Grain yield was strongly influenced by nitrogen management, with LCC-5 achieving the highest yield (4814.26 kg ha-1), followed by LCC-6 (4511 kg ha-1). Conventional tillage slightly outperformed zero tillage in grain yield. According to the study, LCC threshold 5 is useful for real-time nitrogen application in maize. Therefore, maize farmers are encouraged to embrace LCC-based split nitrogen application rather than following standard nitrogen fixed schedules for sustainable and profitable production.
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Claims 8
Claim · model-written summary
Standard split nitrogen and LCC 4, 5, and 6 had statistically similar leaf area index across dates.
- Treatment
- LCC-based nitrogen management at LCC 4, 5, and 6 critical valuese0
- Outcome
- LAIe0
- Direction
- statistically similare0
- Comparator
- Standard split nitrogen applicatione0
Zea maysOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Standard split nitrogen application and LCC-based nitrogen management at LCC 4, 5, and 6 critical values resulted in statistically similar LAI during all dates of observations; however, it was high at 90 days after sowing (DAS).”
t0“maize”
Claim · model-written summary
Leaf area index was high at 90 days after sowing.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Standard split nitrogen application and LCC-based nitrogen management at LCC 4, 5, and 6 critical values resulted in statistically similar LAI during all dates of observations; however, it was high at 90 days after sowing (DAS).”
t0“maize”
Claim · model-written summary
LCC-5 significantly increased dry matter accumulation at 90 days after sowing.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Total dry matter accumulation was significantly higher under LCC-5 at 90 DAS.”
t0“maize”
Claim · model-written summary
LCC-5 gave the highest grain yield, 4814.26 kg ha-1.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Grain yield was strongly influenced by nitrogen management, with LCC-5 achieving the highest yield (4814.26 kg ha-1), followed by LCC-6 (4511 kg ha-1).”
t0“maize”
Claim · model-written summary
LCC-6 produced 4511 kg ha-1 grain yield, second to LCC-5.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Grain yield was strongly influenced by nitrogen management, with LCC-5 achieving the highest yield (4814.26 kg ha-1), followed by LCC-6 (4511 kg ha-1).”
t0“maize”
Claim · model-written summary
Conventional tillage slightly exceeded zero tillage in grain yield.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Conventional tillage slightly outperformed zero tillage in grain yield.”
t0“maize”
Claim · model-written summary
The authors recommend LCC threshold 5 for real time nitrogen application in maize.
- Outcome
- LCC threshold 5 is useful for real-time nitrogen applicatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“According to the study, LCC threshold 5 is useful for real-time nitrogen application in maize.”
Claim · model-written summary
The authors encourage maize farmers to use LCC based split nitrogen application.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Therefore, maize farmers are encouraged to embrace LCC-based split nitrogen application rather than following standard nitrogen fixed schedules for sustainable and profitable production.”
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