Agronomic Effect of Combined Application of Biochar and Nitrogen Fertilizer

Zheng, Wei; Sharma, Brajendra K.

doi:10.1002/9781118921487.ch5-8

Cited by 2 publications

(3 citation statements)

References 29 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…We are only aware of one other published field study for biochar in Illinois, where Zheng and Sharma (2020) found that biochar increased corn yields both with and without N fertilizer over one season. Our results also contradict the 5%–10% simulated yield increase in central and northern Illinois projected in a recent modeling study (Dokoohaki et al., 2019).…”

Section: Discussionmentioning

confidence: 99%

“…Thus, for soils in Illinois and across much of the upper U.S. Midwest that are naturally high in fertility, with cropping systems receiving lime amendments and high fertilizer inputs, there is likely a lower probability of detecting additional yield benefits from biochar (Jeffery et al, 2017). We are only aware of one other published field study for biochar in Illinois, where Zheng and Sharma (2020) found that biochar increased corn yields both with and without N fertilizer over one season. Our results also contradict the 5%-10% simulated yield increase in central and northern Illinois projected in a recent modeling study (Dokoohaki et al, 2019).…”

Section: In-season Soil N Availabilitymentioning

confidence: 99%

See 1 more Smart Citation

Does biochar improve nitrogen use efficiency in maize?

Preza Fontes,

Greer,

Pittelkow

2023

GCB Bioenergy

View full text Add to dashboard Cite

Biochar is promoted as a means of improving soil fertility. Yet, few experiments have investigated its potential to improve nitrogen (N) use efficiency for high‐yielding maize production in the U.S. Midwest. We tested the hypothesis that biochar application increases inorganic soil N availability during maize growth, leading to higher grain yields and N recovery efficiency while reducing the risk of N leaching following harvest. Four N fertilizer rates (0, 90, 179, and 269 kg ha−1 as urea ammonium nitrate [UAN] solution) were applied with or without biochar (10 Mg ha−1) before planting in a two‐year field study. Inorganic soil N concentration was measured during the growing season (0–15 cm), and deep soil cores were obtained following harvest (0–90 cm). Results show that biochar did not affect maize yield, crop N uptake, or N recovery efficiency (by the difference method) across N rates, and there was no biochar by N rate interaction. While biochar lowered soil inorganic N concentrations on several sampling dates, this did not translate into seasonal differences in cumulative soil N availability, although grain yields in the unfertilized control were ~10% lower with biochar, suggesting net N immobilization. Biochar partially reduced the risk of N leaching following harvest by decreasing soil N concentrations at 30–60 cm, but mean concentrations for 0–90 cm were not different. Compared to previous work highlighting the benefits of biochar in arid climates with low soil fertility, we found no evidence of increased crop yield, NRE, or reduced risk of N leaching on Mollisols in a temperate climate.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: In-season Soil N Availabilitymentioning

confidence: 99%

Does biochar improve nitrogen use efficiency in maize?

Preza Fontes,

Greer,

Pittelkow

2023

GCB Bioenergy

View full text Add to dashboard Cite

show abstract

“…A similar conclusion was also reached by Huang [31], who reported that the water use efficiency significantly improved under low and medium biochar addition rates, and there was no help when the addition rate reached 8%. Zhuang [32] also reported that at the same N fertilizer application amount, the dry matter accumulation of plants first increased and then decreased with increasing biochar addition rate, and a moderate increase of 4% was a reasonable amount combined with N fertilizer application. In general, an appropriate rate of biochar addition combined with fertilizer can improve crop yield and water productivity, and we should pay attention to the addition rate of biochar and avoid excess biochar.…”

Section: Accumulated Irrigation Water Amount and Water Productivitymentioning

confidence: 92%

How Does Bio-Organic Fertilizer Combined with Biochar Affect Chinese Small Cabbage’s Growth and Quality on Newly Reclaimed Land?

Wang,

Zhai,

Shi

et al. 2024

Plants

View full text Add to dashboard Cite

The cultivated land area in China is approaching the red line for farmland protection. Newly reclaimed land possesses a large exploratory potential to become a reserved land resource. Identifying a fertilization strategy is vital for improving the poor properties and weak fertility of newly reclaimed land. An experiment was conducted to study the effects of traditional compound fertilizer (Fc) or bio-organic fertilizer (Ft), alone or in combination with biochar addition (6.85 t·ha−1 and 13.7 t·ha−1) on the growth, photosynthesis, yield and quality of Chinese small cabbage (CSC) plant. The results showed that compared to single compound fertilizer application, bio-organic fertilizer application promoted the plant’s growth, indicated by the plant height, stem diameter and leaf area index (LAI), and significantly enhanced the yield and dry matter accumulation of CSC. In terms of the combination with biochar, the promoting effects were positively related to the biochar addition rate in the compound fertilizer group, while it was better to apply bio-organic fertilizer alone or in combination with biochar at a low rate of 6.85 t·ha−1. The highest yield was obtained under B2Fc and B1Ft with 29.41 and 37.93 t·ha−1, respectively, and the yield under B1Ft was significantly higher than that under B2Fc. The water productivity (WP) significantly improved in response to both kinds of fertilizer combined with biochar at 6.85 t·ha−1. There was a significant difference between the photosynthetic characteristics of plants treated with single-compound fertilizer and those treated with bio-organic fertilizer. The photosynthetic characteristics increased under compound fertilizer combined with biochar, while they regressed under bio-organic fertilizer combined with biochar. The quality of CSC, especially that of soluble sugars and total phenolics, improved under single bio-organic fertilizer application compared with that under single-compound fertilizer. The nitrite content of the plants increased with increasing biochar addition rate in both fertilizer groups. In conclusion, there is a significant promoting effect of applying bio-organic fertilizer to replace chemical fertilizer alone or combining compound fertilizer with low-rate biochar addition on newly reclaimed land. It is a recommended fertilization strategy to substitute or partially substitute chemical fertilizer with bio-organic fertilizer combined with biochar in newly reclaimed land, and it is of great significance to achieve fertilizer reduction.

show abstract

Agronomic Effect of Combined Application of Biochar and Nitrogen Fertilizer

Cited by 2 publications

References 29 publications

Does biochar improve nitrogen use efficiency in maize?

Does biochar improve nitrogen use efficiency in maize?

How Does Bio-Organic Fertilizer Combined with Biochar Affect Chinese Small Cabbage’s Growth and Quality on Newly Reclaimed Land?

Contact Info

Product

Resources

About