CROP PARAMETERS DETERMINATION OF QUEFTS MODEL FOR OPTIMIZING NPK NUTRITION IN WHEAT

Q: How can I download an article?

To download an article from SID, first log in to the site, search for the article title, and click on the 'Download Article' option.

Q: How can I download an ISI article?

To download an ISI article on SID, enter the keyword or article title in the search bar, view the relevant results, click on the desired article, and select the 'Download Article' option.

Q: How can I access the SID database?

To access the SID database, visit SID.ir, create an account, and log in to access scientific resources.

Q: Is downloading articles from SID free?

Some articles on SID are available for free, while others require payment. Details are specified on the article's page.

SOLTANI E.; SOLTANI A.; MOHAMADI N.; TORABI B.; ZEINALI E.

Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

Journal Paper

Paper Information

Journal: Crop Production Year:2015 | Volume:8 | Issue:3 Page(s): 41-61

Download Full-Text

مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

Persian Verion

View:

1,501

Download:

Cites:

Information Journal Paper

Title

CROP PARAMETERS DETERMINATION OF QUEFTS MODEL FOR OPTIMIZING NPK NUTRITION IN WHEAT

Author(s)

Keywords

INTERNAL USE EFFICIENCYQ2

NUTRIENT UPTAKEQ2

MAXIMUM NUTRIENT ACCUMULATION AND DILUTION EFFICIENCYQ2

Abstract

Background and objectives: The QUEFTS model is using for optimizing fertilizer managements in crops, but it has not been used in Iran yet. QUEFTS accounts for interactions among NPK affecting the INTERNAL USE EFFICIENCY of N, P and K and allows differentiation according to different yield levels. It is necessary to determine crops parameters before application the model in the studying area.The first step of the QUEFTS model requires the estimation of the soil-supplying capacity or potential indigenous supplies of N, P and K for a given site or field. In step 2, the actual uptake of a nutrient (UN, UP, UK) is calculated as a function of the potential supply of that nutrient (SN, SP, SK). In step 3, two yield estimates are obtained for each nutrient (YND, YNA, YPD, YPA, YKD, YKA) from the UN, UP and UK estimated in step 2.Materials and methods: For this purpose, two experiments were conducted. The first one was a survey experiment in the 45 wheat production fields. The latter was an experiment based on completely randomized block design with 36 fertilizer treatments. Before the experiments, soil samples were obtained from the farms and analysis were conducted to determine the nutrients. Grain and biological yields, NPK uptake, INTERNAL USE EFFICIENCY and maximum nutrient accumulation and dilution were obtained from these two experiments.Results: Results indicated that maximum and minimum INTERNAL USE EFFICIENCY of N were 48 and 25 Kg Kg-1 in the first Experiment and 46 and 17 Kg Kg-1 in the second experiment. Maximum and minimum INTERNAL USE EFFICIENCY of P changed from 194 to 442 Kg Kg-1 in the studying fields in the first experiment. The same results were 97 to 264 Kg Kg-1 in the second experiment. Results showed that maximum and minimum INTERNAL USE EFFICIENCY of K ranged from 32 to 68 Kg Kg-1 in the first experiment. The same results for the second experiment were from 9 to 25 Kg Kg-1. Maximum nutrient dilution for NPK were obtained 46, 415, and 56 (Kg grain/Kg NUTRIENT UPTAKE). Maximum nutrient accumulation for NPK were 14, 120, and 14 (Kg grain/Kg NUTRIENT UPTAKE).Conclusion: There was no report on maximum nutrient dilution and accumulation of NPK for a crop in Gorgan or Iran. The presented approach using QUEFTS allows not only the estimation of nutrient requirements to achieve a certain yield; it also provides a useful tool for identifying nutritionally optimal yield. The calibration of the QUEFTS model for wheat required the estimation of the slopes of two borderlines describing the maximum accumulation (a) and dilution (d) of N, P and K in the plant in relation to grain yield.

Cites

No record.

References

No record.

Cite

APA: Copy

SOLTANI, E., SOLTANI, A., MOHAMADI, N., TORABI, B., & ZEINALI, E.. (2015). CROP PARAMETERS DETERMINATION OF QUEFTS MODEL FOR OPTIMIZING NPK NUTRITION IN WHEAT. ELECTRONIC JOURNAL OF CROP PRODUCTION, 8(3), 41-61. SID. https://sid.ir/paper/135162/en

Vancouver: Copy

SOLTANI E., SOLTANI A., MOHAMADI N., TORABI B., ZEINALI E.. CROP PARAMETERS DETERMINATION OF QUEFTS MODEL FOR OPTIMIZING NPK NUTRITION IN WHEAT. ELECTRONIC JOURNAL OF CROP PRODUCTION[Internet]. 2015;8(3):41-61. Available from: https://sid.ir/paper/135162/en

IEEE: Copy

E. SOLTANI, A. SOLTANI, N. MOHAMADI, B. TORABI, and E. ZEINALI, “CROP PARAMETERS DETERMINATION OF QUEFTS MODEL FOR OPTIMIZING NPK NUTRITION IN WHEAT,” ELECTRONIC JOURNAL OF CROP PRODUCTION, vol. 8, no. 3, pp. 41–61, 2015, [Online]. Available: https://sid.ir/paper/135162/en

Related Journal Papers