Claim · model-written summary
Applying 60 kg N/ha increased grain yield by only 0.24 Mg/ha over the unfertilized control in unweeded plots.
- Taxon
- upland rice
Oryza sativat0 - Treatment
- 60 kg N ha –1e1
- Outcome
- grain‐yield increasee1
- Direction
- increasee1
- Value
- 0.24 Mg ha –1e1
- Qualifier
- in unweeded treatmentse1
- Comparator
- unfertilized controle1
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleSetting
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Across the different N treatments, the application of 60 kg N ha –1 resulted in a grain‐yield increase above the unfertilized control of only 0.24 Mg ha –1 in unweeded treatments, whereas yields increased by 1.07 Mg ha –1 when butachlor application was supplemented with a single hand weeding and by 1.28 Mg ha –1 with two hand weedings”
t0“the productivity of upland rice”
Title
Influence of nitrogen and weed management on the productivity of upland rice
Chandra Vir Singh; Bidhan Chandra Ghosh; Bishwa Nath Mittra; et al. Journal of Plant Nutrition and Soil Science 2008. doi:10.1002/jpln.200800001
Other claims from this paper (8)
- Intervention effect Applying 60 kg N/ha increased grain yield by 1.07 Mg/ha over the unfertilized control when butachlor was supplemented with one hand weeding.
- Intervention effect Applying 60 kg N/ha increased grain yield by 1.28 Mg/ha over the unfertilized control with two hand weedings.
- Intervention effect Hand weeding twice gave the highest grain yield in both years among the weed-control measures.
- Intervention effect In 2002, a single pre-plant application of controlled-release urea gave higher average grain yield (1.57 Mg/ha) than split-applied prilled urea.
- Intervention effect In 2003, a single pre-plant application of controlled-release urea gave higher average grain yield (1.87 Mg/ha) than split-applied prilled urea.
- Intervention effect Controlled-release urea gave the highest agronomic N use efficiency, 15–20 kg grain per kg N applied.
- Intervention effect Controlled-release urea gave the highest apparent N recovery, 39%–45%.
- Recommendation Controlled-release urea is particularly beneficial for upland rice cultivation under variable rainfall, provided weeds are controlled.