scholarly journals Arsenic and Cadmium Accumulation in Soil as Affected by Continuous Organic Fertilizer Application: Implications for Clean Production

Agronomy ◽  
2021 ◽  
Vol 11 (11) ◽  
pp. 2272
Author(s):  
Na Sun ◽  
Rodney B. Thompson ◽  
Junxiang Xu ◽  
Shangqiang Liao ◽  
Linna Suo ◽  
...  
Keyword(s):  
Sandy Loam ◽  
Organic Fertilizer ◽  
Life Time ◽  
Cadmium Accumulation ◽  
Fertilizer Application ◽  
Application Rate ◽  
Pak Choi ◽  
Cd Accumulation ◽  
Contamination Risk ◽  
Fertilizer Application Rate

As and Cd in soil can be assimilated and accumulated by vegetables and can be subsequently ingested by humans. Contradictory effects of organic fertilizer application on As and Cd accumulation in soil have been reported in previous studies. An eight-year greenhouse study was conducted on a sandy loam soil in Beijing, China to investigate the effects of organic fertilizer application rate on soil properties, and As and Cd accumulation in soil. The contamination risk of pak choi grown after eight years’ application of organic fertilizer was also evaluated. Soil organic carbon increased 3.0–3.8 times with low, medium and high rates of fertilizer application in 2018 compared to the initial soil. Organic fertilizer application significantly increased soil nutrients and microbial biomass while it mildly affected soil pH. The bioavailability of As/Cd has decreased after eight years’ application of organic fertilizer. Pak choi crop harvested from all three treatments in 2018 did not pose a threat to human health, even for life-time consumption. Soil total As content significantly decreased with organic fertilizer application, mainly due to the lower As content in the applied fertilizer than that in soil. Continuous application of clean organic fertilizer can be adopted to reduce the contamination risk of highly contaminated soil in the soil–plant system.

scholarly journals Excessive Application of Fertilizer, Agricultural Non-Point Source Pollution, and Farmers’ Policy Choice

2019 ◽  
Vol 11 (4) ◽  
pp. 1165 ◽  
Author(s):  
Haixia Wu ◽  
Yan Ge
Keyword(s):  
Point Source ◽  
Organic Fertilizer ◽  
Fertilizer Application ◽  
Application Rate ◽  
Chemical Fertilizer ◽  
Shaanxi Province ◽  
Annual Growth Rate ◽  
Point Source Pollution ◽  
Fertilizer Application Rate ◽  
Non Point Source Pollution

This paper takes 516 households who planted wheat in Heyang County, Shaanxi Province in 2018, as samples to construct three policy environments: Technological guidance for planting, subsidies for organic fertilizer application, and agricultural tailwater discharge standards. The experimental choice method was used to empirically analyze policy preferences during the process of fertilizer reduction. The results indicate that households show different preferences for the three policy settings: The fertilizer application rate is reduced by 6.98% if providing full technological guidance for farmers throughout the wheat planting process and is reduced by 5.18% under the background of providing appropriate organic fertilizer subsidies. The agricultural tailwater discharge standards have the least impact on the reducing level of chemical fertilizer application, with decreasing amounts of only 1.85% and 0.77% under the second-level and the first-level agricultural tailwater discharge standards, respectively. These results indicate that households in Heyang County, Shaanxi Province, demonstrate a low willingness to accept the agricultural tailwater discharge standards in order to cut down on the amount of chemical fertilizer application and the agricultural non-point source pollution. Therefore, compared with a compounded annual growth rate (CAGR) of 1% of fertilizer usage nationwide according to the Chinese Ministry of Agriculture, given the current planting environment and policies design, providing comprehensive technological guidance as well as price subsidies for the organic fertilizer can significantly and robustly reduce the excessive application of fertilizer in Heyang County, Shaanxi Province, under the best scenario, thereby further alleviating agricultural non-point source pollution.

scholarly journals Effect of Combined Fertilization on Plant Biomass of Waste Land and Comprehensive Benefit Evaluation in Grassland Mining Area

2020 ◽  
Vol 165 ◽  
pp. 03057
Author(s):  
Dan Shan ◽  
Jingli He ◽  
Hao Rong ◽  
Tiegang Zhang
Keyword(s):  
Soil Fertility ◽  
Plant Biomass ◽  
Organic Fertilizer ◽  
Mining Area ◽  
Fertilizer Application ◽  
Application Rate ◽  
Vegetation Restoration ◽  
Ratio Method ◽  
Dump Site ◽  
Fertilizer Application Rate

The dump site formed by the large-scale open-pit coal mining waste piles has poor soil environment and difficult vegetation restoration, and is in the grassland area with relatively weak ecological environment. A completely randomized block design was used to conduct separate application of microbial fertilizer and the combined application of microbial fertilizer and organic fertilizer in this study. The results showed that “Sino Green Agri-Biotech” soil conditioner combined with organic fertilizer had a higher plant biomass by comparing different fertilization methods, the plant biomass increased with the increase of microbial fertilizer application. The RSR (Rank Sum Ratio) method was used to analyze the comprehensive benefits of different fertilization methods from the aspects of microbial community diversity, soil enzyme activity, soil fertility, vegetation growth status and economic benefits. Evaluation results showed that application of microbial fertilizer had an important role in increasing soil fertility and accelerating vegetation construction the combined benefit of E-2001 microbial fertilizer application rate of 0.60 ml/m2 and organic fertilizer was the highest, priority can be given to the process of ecological restoration on coal mine dump in grassland. It is preferred to use a combination of E-2001 microbial fertilizer application rate of 0.60 ml/m2 and organic fertilizer in the soil improvement process of vegetation restoration and reconstruction in the grassland mining area.

scholarly journals Economic production of maize under chemical and granular organic fertilizer with hormone mixed formula, NPK and organic fertilizer

2019 ◽  
Author(s):  
A. K. Keteku ◽  
P. Intanon ◽  
S. Terapongtanakorn ◽  
R. Intanon
Keyword(s):  
Soil Analysis ◽  
Block Design ◽  
Organic Fertilizer ◽  
Fertilizer Application ◽  
Application Rate ◽  
Growth Data ◽  
Maize Production ◽  
Economic Production ◽  
Fertilizer Application Rate ◽  
And Control

A new hybrid of maize (Pacific 999 Super) was investigated under six treatments; organic fertilizer (OF), chemical and granular organic fertilizer with hormone mixed formula A (HO-A), formula B (HO-B), formula C (HO-C), NPK-15-15-15 and control in 2017 and 2018 seasons at Phitsanulok, Thailand. The treatments were arranged in randomized complete block design (RCBD) with 3 replications. Fertilizer application rate was 300 kg/ha. Initial soil analysis had shown lower rates of NPK (0.394%, 0.013% and 0.191%). The vegetative growth data showed that, mean plant height, leaf area, leaf chlorophyll and total dry matter/plant were highest in HO-C (255.49 cm, 158.37 dm2, 61.10 and 299.62g, respectively). A maximum grain weight (9,289.67 kg/ha), crude protein (8.99%) and profit (889.6 $/ha) were again recorded in HO-C. The results have demonstrated that the HO-C produced the greatest yield, income and is recommend for maize production.

scholarly journals Novel Route Planning Method to Improve the Operational Efficiency of Capacitated Operations. Case: Application of Organic Fertilizer

2021 ◽  
Vol 3 (3) ◽  
pp. 458-477
Author(s):  
Mahdi Vahdanjoo ◽  
Claus G. Sorensen
Keyword(s):  
Organic Fertilizer ◽  
Route Planning ◽  
Fertilizer Application ◽  
Operational Efficiency ◽  
Application Rate ◽  
Simultaneous Optimization ◽  
Limiting Factor ◽  
Application Process ◽  
Optimal Sequence ◽  
Proposed Model

A field area coverage-planning algorithm has been developed for the optimization and simulation of capacitated field operations such as the organic fertilizer application process. The proposed model provides an optimal coverage plan, which includes the optimal sequence of the visited tracks with a designated application rate. The objective of this paper is to present a novel approach for route planning involving two simultaneous optimization criteria, non-working distance minimization and the optimization of application rates, for the capacitated field operations such as organic fertilizer application to improve the overall operational efficiency. The study and the developed algorithm have shown that it is possible to generate the optimized coverage plan based on the required defined capacity of the distributer. In this case, the capacity of the distributer is not considered a limiting factor for the farmers. To validate this new method, a shallow injection application process was considered, and the results of applying the optimization algorithm were compared with the conventional methods. The results show that the proposed method increase operational efficiency by 19.7%. Furthermore, the applicability of the proposed model in robotic application were demonstrated by way of two defined scenarios.

scholarly journals Nitrogen Leaching and Nitrogen Balance under Differing Nitrogen Fertilization for Sugarcane Cultivation on a Subtropical Island

Water ◽  
2021 ◽  
Vol 13 (5) ◽  
pp. 740
Author(s):  
Ken Okamoto ◽  
Shinkichi Goto ◽  
Toshihiko Anzai ◽  
Shotaro Ando
Keyword(s):  
N Uptake ◽  
Fertilizer Application ◽  
Application Rate ◽  
N Fertilizer ◽  
N Leaching ◽  
N Recovery ◽  
N Application ◽  
Fertilizer Application Rate ◽  
Sugarcane Yield ◽  
Cropping Seasons

Fertilizer application during sugarcane cultivation is a main source of nitrogen (N) loads to groundwater on small islands in southwestern Japan. The aim of this study was to quantify the effect of reducing the N fertilizer application rate on sugarcane yield, N leaching, and N balance. We conducted a sugarcane cultivation experiment with drainage lysimeters and different N application rates in three cropping seasons (three years). N loads were reduced by reducing the first N application rate in all cropping seasons. The sugarcane yields of the treatment to which the first N application was halved (T2 = 195 kg ha−1 N) were slightly lower than those of the conventional application (T1 = 230 kg ha−1 N) in the first and third seasons (T1 = 91 or 93 tons ha−1, T2 = 89 or 87 tons ha−1). N uptake in T1 and T2 was almost the same in seasons 1 (186–188 kg ha−1) and 3 (147–151 kg ha−1). Based on the responses of sugarcane yield and N uptake to fertilizer reduction in two of the three years, T2 is considered to represent a feasible fertilization practice for farmers. The reduction of the first N fertilizer application reduced the underground amounts of N loads (0–19 kg ha−1). However, application of 0 N in the first fertilization would lead to a substantial reduction in yield in all seasons. Reducing the amount of N in the first application (i.e., replacing T1 with T2) improved N recovery by 9.7–11.9% and reduced N leaching by 13 kg ha−1. These results suggest that halving the amount of N used in the first application can improve N fertilizer use efficiency and reduce N loss to groundwater.

Rice Response to Phosphorus Fertilizer Application Rate and Timing on Alkaline Soils in Arkansas

2002 ◽  
Vol 94 (6) ◽  
pp. 1393-1399 ◽  
Author(s):  
Nathan A. Slaton ◽  
Charles E. Wilson ◽  
Richard J. Norman ◽  
Sixte Ntamatungiro ◽  
Donna L. Frizzell
Keyword(s):  
Fertilizer Application ◽  
Application Rate ◽  
Alkaline Soils ◽  
Phosphorus Fertilizer ◽  
Fertilizer Application Rate

scholarly journals Dynamics of the Fertilizer Value Chain in Mozambique

2020 ◽  
Vol 12 (11) ◽  
pp. 4691
Author(s):  
Helder Zavale ◽  
Greenwell Matchaya ◽  
Delfim Vilissa ◽  
Charles Nhemachena ◽  
Sibusiso Nhlengethwa ◽  
...  
Keyword(s):  
Value Chain ◽  
Agricultural Productivity ◽  
Fertilizer Application ◽  
Application Rate ◽  
Demand And Supply ◽  
Fertilizer Use ◽  
Fertilizer Value ◽  
Crop Uptake ◽  
Fertilizer Application Rate ◽  
Side Constraints

Mozambique is characterized by low agricultural productivity, which is associated with low use of yield-enhancing agricultural inputs. Fertilizer application rate averaged 5.7 kg ha−1 in Mozambique during the period 2006 to 2015, considerably low by regional targets, yet constraints that affect fertilizer use have not been thoroughly investigated. This study examined the constraints on fertilizer value chains in Mozambique to contribute to fertilizer supply chain strengthening. We used a combination of multivariate analysis and descriptive methods. Our findings indicate that fertilizer use has both demand and supply constraints. Key demand-side constraints include liquidity challenges, limited awareness about the benefits of using fertilizer, and low market participation, while the main supply-side constraints include high transaction costs, limited access to finance, and lack of soil testing results and corresponding fertilizer recommendations by soil type and crop uptake. These results suggest that scaling up the input subsidy program through vouchers (either paper-based vouchers or e-vouchers) with demonstration plots and effective targeting could drive up smallholders’ demand for fertilizer and fertilizer supply by strengthening a sustainable network of wholesalers and retailers. This would likely boost agricultural productivity.

Modeling the Effects of Fertilizer Application Rate on Nitrous Oxide Emissions

2006 ◽  
Vol 70 (1) ◽  
pp. 235-248 ◽  
Author(s):  
R. F. Grant ◽  
E. Pattey ◽  
T. W. Goddard ◽  
L. M. Kryzanowski ◽  
H. Puurveen
Keyword(s):  
Nitrous Oxide ◽  
Fertilizer Application ◽  
Application Rate ◽  
Nitrous Oxide Emissions ◽  
Fertilizer Application Rate

scholarly journals Changing Fertilizer Management Practices in Sugarcane Production: Cane Grower Survey Insights

2020 ◽  
Author(s):  
Syezlin Hasan ◽  
James C. R. Smart ◽  
Rachel Hay ◽  
Sharyn Rundle-Thiele
Keyword(s):  
Management Practices ◽  
Negative Binomial ◽  
Fertilizer Application ◽  
Application Rate ◽  
Practice Change ◽  
Farm Income ◽  
Fertilizer Management ◽  
Application Rates ◽  
Fertilizer Application Rate ◽  
The Impact

Research focused on understanding wider systemic factors driving behavioral change is limited with a dominant focus on the role of individual farmer and psychosocial factors for farming practice change, including reducing fertilizer application in agriculture. Adopting a wider systems perspective, the current study examines change and the role that supporting services have on fertilizer application rate change. A total of 238 sugarcane growers completed surveys reporting on changes in fertilizer application along with factors that may explain behavior change. Logistic regressions and negative binomial count-data regressions were used to examine whether farmers had changed fertilizer application rates and if they had, how long ago they made the change, and to explore the impact of individual and system factors in influencing change. Approximately one in three sugarcane growers surveyed (37%) had changed the method they used to calculate fertilizer application rates for the cane land they owned/managed at some point. Logistic regression results indicated growers were less likely to change the basis for their fertilizer calculation if they regarded maintaining good relationships with other local growers as being extremely important, they had another source of off-farm income, and if they had not attended a government-funded fertilizer management workshop in the five years preceding the survey. Similar drivers promoted early adoption of fertilizer practice change; namely, regarding family traditions and heritage as being unimportant, having sole decision-making authority on farming activities and having attended up to 5 workshops in the five years prior to completing the survey. Results demonstrated the influence of government-funded services to support practice change.

Sign in / Sign up

Export Citation Format

Share Document