Estimation of the Economic Optimum Rates of Nitrogen Fertilizer for Maize Grown in a Calcareous Soil in Combination with Organic Manure Applications

Ali, Ali M.; Habib, Ashraf

doi:10.1080/00103624.2022.2071933

Cited by 5 publications

(3 citation statements)

References 53 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Increasing N applications above optimum rates will result in minor increases in grain yield along with increased production costs and the possibility of negative environmental implications (Ju et al 2009;Guo et al 2010;Ciampitti and Vyn 2013;Bijay-Singh 2018, Bijay-Singh andCraswell 2021). For example, based on ratio of per kg grain price and cost of per kg fertilizer N, Ali and Habib (2022) calculated the economic optimal rate of N fertilizer for maize on a calcareous soil in Egypt to be 39.9 to 27.8 kg N ha −1 lower than the fertilizer N rate at maximum yield but with no significant loss in grain yield. Therefore, the current study paves the way for the development of field-specific N fertilizer management strategies that account for the spatial and temporal variability that governs optimal N fertilizer rates for wheat.…”

Section: Discussionmentioning

confidence: 99%

Developing a nitrogen fertilizer management model for wheat in calcareous soils using the critical nitrogen dilution curve

Ali

Saudi

El-Sadek

et al. 2023

Nutr Cycl Agroecosyst

View full text Add to dashboard Cite

The critical nitrogen (N) dilution curve, which expresses whole-plant critical N concentration as a function of shoot biomass, can be used as a N management diagnostic tool for cereals. The objectives of this research were to develop a critical N dilution curve for wheat grown in calcareous soils and to formulate a model for estimating N fertilizer requirement of wheat crop at different growth stages. Six N fertilization rates (0–250 kg N ha−1) were used to induce variability in plant growth throughout six site-years (three locations at West Delta of Egypt and two seasons [2020/21-2021/22]). Aboveground shoot biomass (W; Mg DM [dry matter] ha−1) and N concentration (Nc; g kg−1 DM) were determined on five sampling dates during the growing season. A critical N dilution curve was developed as: $${N}_{\mathrm{c}}=50.141 {\mathrm{W}}^{-0.424}$$ N c = 50.141 W - 0.424 . The Nc dilution curve was then used to develop a N fertilizer topdressing strategy. The study relied on N nutrition index inferred from the Nc based on N uptake, and instead of relying on a single N recovery efficiency coefficient, a variable N recovery efficiency was developed. This approach increased the hypothetical N requirements at low N application rates while decreased requirements at high N application rates, implying that the Nc dilution curve can be used successfully to estimate the rates of supplemental N application. The developed strategy will provide a solid basis for precisely managing N fertilizer, though challenge ahead at the farm level will be in determining the actual shoot biomass and N concentration.

show abstract

Section: Discussionmentioning

confidence: 99%

Developing a nitrogen fertilizer management model for wheat in calcareous soils using the critical nitrogen dilution curve

Ali

Saudi

El-Sadek

et al. 2023

Nutr Cycl Agroecosyst

View full text Add to dashboard Cite

show abstract

“…The response of green forage yield to N fertilizer levels was fitted to quadratic equation (Y= a + bX + cX 2 ) in microsoft excel software with Y as green forage yield in q/ha, a as the intercept and b and c as regression co-efficients. Calculation of the economical N fertilizer rate was done as per Ali and Habib (2022) as follows:…”

Section: Methodsmentioning

confidence: 99%

Nitrogen Fertilization Strategies for Forage Maize Genotypes: Agronomic Performance, Nitrogen use Efficiency and Economic Assessment and Deter- mination of Economical N Fertilizer Rate

Nanda,

Agrawal,

2024

Environment and Ecology

View full text Add to dashboard Cite

A field investigation was conducted using factorial experiment in randomized block design with seven genotypes and three nitrogen (N) levels (80, 120 and 160 kg N/ha) with three replications at Dr Rajendra Prasad Central Agricultural University, Pusa, Bihar, India during kharif season, 2022. The objective of the study was to assess the nitrogen use efficiency, productivity and profitability of forage maize genotypes under different N levels. Among, the genotypes, J-1006 and among N levels, application of 120 kg ha-1 registered the maximum green and dry fodder yield and crude protein yield (CPY). The highest partial factor productivity of N fertilizer (PFPN) was recorded with J-1006 (103.3 kg DM/kg N applied) and application of lowest dose i.e. 80 kg/ha (99.1 kg DM/kg N applied) among genotypes and N levels, respectively. J-1006 (Rs 78109 ha-1 and 3.62) and application of 120 kg N ha-1 (Rs 65716 ha-1 and 3.21) was profitable in terms of net returns and B:C ratio among genotypes and N levels, respectively. The economic optimum dose of N for tested fodder maize genotypes was found to be 139 kg/ha.

show abstract

“…For example, legumes and soybeans can produce their own nitrogen from the air, so they do not require nitrogen fertiliser. However, fertiliser application is of great importance for crops such as wheat, maize, rice, sugar beet and peanuts (Ali and Habib 2022;Yang et al 2022a;Zhao et al 2022). Increases in the prices of fertilisers, which are of great importance for https://doi.org/10.17221/147/2022-AGRICECON some product types, may adversely affect the agricultural activities of the producers.…”

mentioning

confidence: 99%

The volatility connectedness among fertilisers and agricultural crop prices: Evidence from selected main agricultural products

Uçak¹,

Arı²,

Yelgen³

2022

Agric. Econ. - Czech

View full text Add to dashboard Cite

The price of fertiliser, which is one of the most important inputs of agricultural production, has increased significantly in recent years. In this study, we empirically analysed the effect of volatility in fertiliser prices on selected agricultural products by using the Diebold-Yilmaz connectedness approach, which is based on time-varying parameter (TVP) vector auto-regression (VAR). The findings showed that the spread of volatility and the interconnectedness between these variables increased in times of crisis and that the risk pass-through was due to fertiliser prices. However, empirical results showed that the price volatility of phosphate rock and urea was highly correlated to the volatility of other products. Furthermore, we found that sugar, soybean and cotton were the agricultural products most vulnerable to the effects of external shocks.

show abstract

Estimation of the Economic Optimum Rates of Nitrogen Fertilizer for Maize Grown in a Calcareous Soil in Combination with Organic Manure Applications

Cited by 5 publications

References 53 publications

Developing a nitrogen fertilizer management model for wheat in calcareous soils using the critical nitrogen dilution curve

Developing a nitrogen fertilizer management model for wheat in calcareous soils using the critical nitrogen dilution curve

Nitrogen Fertilization Strategies for Forage Maize Genotypes: Agronomic Performance, Nitrogen use Efficiency and Economic Assessment and Deter- mination of Economical N Fertilizer Rate

The volatility connectedness among fertilisers and agricultural crop prices: Evidence from selected main agricultural products

Contact Info

Product

Resources

About