Dressed for success. Are crop N uptake, N loss and lint yield of irrigated cotton affected by how in-crop N fertiliser is applied?

Schwenke, Graeme; Baird, Jon; Nachimuthu, Gunasekhar; Macdonald, Ben; McPherson, Annabelle; Mercer, Clarence; Hundt, Andy

doi:10.1016/j.fcr.2022.108659

Cited by 8 publications

(5 citation statements)

References 40 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The stepwise linear regression suggested a negative relationship with lint yield only for the Gwydir comparison (Table 4). Mineral N stocks in this study tended to be higher than in recent research studies (Schwenke et al., 2022). This could be a result of the timing of the soil sampling that occurred after fertilizer application and before crop uptake.…”

Section: Resultscontrasting

confidence: 80%

“…The topsoil SOC of the experimental field in the study by Schwenke et al. (2022) was similar (~1%) to the other fields at the Australian Cotton Research Institute and higher than the paired fields investigated in this study (Figure 3). Higher SOC stocks in high‐yielding fields could also be related to other soil properties (e.g.…”

Section: Resultssupporting

confidence: 74%

“…Previous research found that cotton plants often derive more N from soils than from applied fertilizer (Macdonald et al, 2017;Rochester & Bange, 2016). A recent study conducted at the Australian Cotton Research Institute highlighted that higher yields can be achieved with a lower N application rate (<155 kg N/ ha) (Schwenke et al, 2022) compared to the slightly high industry average N application rate (176 kg N/ha) (CRDC, 2023). The topsoil SOC of the experimental field in the study by Schwenke et al (2022) was similar (~1%) to the other fields at the Australian Cotton Research Institute and higher than the paired fields investigated in this study (Figure 3).…”

Section: Soil Organic Carbon and Mineral Nmentioning

confidence: 99%

“…A recent study conducted at the Australian Cotton Research Institute highlighted that higher yields can be achieved with a lower N application rate (<155 kg N/ ha) (Schwenke et al, 2022) compared to the slightly high industry average N application rate (176 kg N/ha) (CRDC, 2023). The topsoil SOC of the experimental field in the study by Schwenke et al (2022) was similar (~1%) to the other fields at the Australian Cotton Research Institute and higher than the paired fields investigated in this study (Figure 3). Higher SOC stocks in high-yielding fields could also be related to other soil properties (e.g.…”

Section: Soil Organic Carbon and Mineral Nmentioning

confidence: 99%

See 3 more Smart Citations

Soil property differences and irrigated‐cotton lint yield—Cause and effect? An on‐farm case study across three cotton‐growing regions in Australia

Nachimuthu,

Palmer,

Hundt

et al. 2024

Soil Use and Management

Self Cite

View full text Add to dashboard Cite

The average lint yield of irrigated cotton in Australia ranges from 2270 to 3700 kg/ha, but yields vary substantially between farms and also between fields on the same farm. Differences in soil properties may cause these yield variations. Identifying which factors are causal and what management can be implemented to mitigate the impacts should help optimize inputs and improve profits. During the 2018–2019 summer cotton‐growing season, a paired‐field comparison approach was used to investigate and improve the understanding of soil property‐induced irrigated cotton yield differences within five farms across three regions of NSW, Australia. The paired fields at each farm recorded an average lint yield difference of >284 kg/ha (measured in 2018–2019 or 5‐year average lint yield). Several soil properties differed between the paired fields at each farm comparison. The soil organic carbon stocks were higher in the higher‐yielding fields at all the farm comparisons and the normalized lint yield percentage was positively correlated with soil organic carbon stocks. Soil sodicity was higher in the lower‐yielding fields at 3 of the 5 comparisons. Results for most soil nutrient tests were above the recommended critical concentrations for Australian cotton production. A stepwise linear regression excluding soil nutrients that were above soil test critical values for crop response and below crop toxicity levels indicated the lint yield was positively correlated with SOC stocks and negatively correlated with sodicity and bulk density. No earthworms were detected during visual soil assessment or soil sampling across all the sites. Visual soil assessment was not a sensitive predictor of cotton crop performance. Comparing soil properties using a paired field approach may assist cotton growers in understanding the factors behind yield differences. A similar strip comparison approach could be adopted for within‐field variability by dividing the fields into discrete performance zones and assessing the soil properties of each zone separately.

show abstract

Section: Resultscontrasting

confidence: 80%

Section: Resultssupporting

confidence: 74%

Section: Soil Organic Carbon and Mineral Nmentioning

confidence: 99%

Section: Soil Organic Carbon and Mineral Nmentioning

confidence: 99%

See 2 more Smart Citations

Soil property differences and irrigated‐cotton lint yield—Cause and effect? An on‐farm case study across three cotton‐growing regions in Australia

Nachimuthu,

Palmer,

Hundt

et al. 2024

Soil Use and Management

Self Cite

View full text Add to dashboard Cite

show abstract

“…Irrational application of nitrogen fertilizer can cause a significant decrease in NUE in farmland [24] and an increase in production cost, while the yield benefit remains unchanged. Genotype, irrigation amount, nitrogen application amount, nitrogen application frequency and agronomic methods all affected nitrogen-use efficiency [12,25]. Eliezer et al [26] have shown that the lack of nitrogen in the early stage of cotton results in a decrease in NUE.…”

Section: Introductionmentioning

confidence: 99%

Effects of Different Nitrogen Allocation Ratios and Period on Cotton Yield and Nitrogen Utilization

Ren,

Sun,

et al. 2023

Water

View full text Add to dashboard Cite

Choosing the proper fertilizer regime for a crop in a given location remains challenging to increase yield, profitability, environmental growth protection, and sustainability. However, the nutrient demand characteristics of cotton in the North China Plain are different at various growth stages. Therefore, we choose the local superior cotton variety (Lumian 532) with high yield as the material, in the present study, we assessed the cotton yield, biomass accumulation and distribution, nitrogen absorption and utilization efficiency, and other parameters by setting four nitrogen allocation ratios (3:5:2, 0:10:0, 3:7:0, and 0:7:3) when the nitrogen application rates were 0, 150, 220, and 300 kg hm−2. The results showed that when the nitrogen application rate was 300 kg hm−2, the growth index, biomass, nitrogen content, and yield of Lumian 532 were the highest, while the nitrogen partial productivity (12.2 and 12.8) was the lowest. When the nitrogen application rate was 220 kg hm−2 and the nitrogen allocation ratio was 3:5:2, the agronomic nitrogen use efficiency (3.2 and 3.5) and nitrogen physiological (24.8 and 25.0) was achieved. When the nitrogen application rate was 150 kg hm−2, the nitrogen partial productivity (20.6 and 20.9) was the highest. In conclusion, the biomass accumulation and distribution, nitrogen use efficiency, yield, and yield composition of Lumian 532 could be effectively regulated by appropriate nitrogen application rate and nitrogen allocation ratio. Therefore, to optimize the yield and improve the nitrogen use efficiency, the optimal nitrogen application rate of Lumian 532 was 220 kg hm−2, and the optimal nitrogen allocation ratio was 3:5:2 in the North China Plain. The results provided practical basis for nutrient demand, cotton yield and ecological protection in different growth stages of cotton in North China Plain.

show abstract

Cotton yield response to fertilizer phosphorus under a range of nitrogen management tactics

Nachimuthu¹,

Schwenke²,

Baird³

et al. 2022

Crop and Environment

View full text Add to dashboard Cite

Dressed for success. Are crop N uptake, N loss and lint yield of irrigated cotton affected by how in-crop N fertiliser is applied?

Cited by 8 publications

References 40 publications

Soil property differences and irrigated‐cotton lint yield—Cause and effect? An on‐farm case study across three cotton‐growing regions in Australia

Soil property differences and irrigated‐cotton lint yield—Cause and effect? An on‐farm case study across three cotton‐growing regions in Australia

Effects of Different Nitrogen Allocation Ratios and Period on Cotton Yield and Nitrogen Utilization

Cotton yield response to fertilizer phosphorus under a range of nitrogen management tactics

Contact Info

Product

Resources

About