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Correction

Frontiers in Sustainable Food Systems ·

Volume 10 - 2026 | https://doi.org/10.3389/fsufs.2026.1986434

Correction: Economic viability of commercial organic fertilizer use in sustainable apple production: plot-level evidence from China

  • Pingping Fang1
  • Yiming Ma2
  • Guanghua Lin2*corresponding author
  1. 1Sanda University, Shanghai, China
  2. 2College of Economics and Management, China Center for Food Security Studies, Nanjing Agricultural University, Nanjing, China
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Abstract

Keywords

There was a mistake in Table 1 as published. The unit of “Yield” was incorrectly reported as “ton/ha”. The correct unit is “10 t/ha”. The reported mean of 1.823 is correct and corresponds to 18.23 t/ha. This correction does not affect the data, regression results, or conclusions of the article. The corrected Table 1 appears below.

Table 1. Variable definitions and summary statistics.

VariableDefinition (Unit)MeanSD
Output valueApple output value per hectare (ten-thousand yuan/ha)6.8096.260
Gross marginGross margin per hectare, calculated as apple output value minus variable production costs (ten-thousand yuan/ha)2.2995.593
YieldApple yield per hectare (10 t/ha)1.8231.446
Variable costsVariable production costs per hectare including fertilizer, pesticide, hired labor, machinery services, irrigation, bags and other current production inputs (ten-thousand yuan/ha)4.5103.196
Average priceAverage realized apple price for the household's largest apple plot, calculated as apple output value divided by apple sales quantity (yuan/kg)3.9542.091
Manure expensesFarmyard manure expenditure per hectare (ten-thousand yuan/ha)0.0870.509
COF expensesCommercial organic fertilizer expenditure per hectare (ten-thousand yuan/ha)0.7070.679
Chemical fertilizer expensesChemical fertilizer expenditure per hectare (ten-thousand yuan/ha)1.3351.492
Hired labor expenses for fertilizationHired labor expenditure for fertilizer application per hectare (ten-thousand yuan/ha).0.0630.220
Other hired labor expensesHired labor expenditure for other production operations per hectare (ten-thousand yuan/ha)0.9651.485
Machinery service expensesMachinery service cost per hectare (ten-thousand yuan/ha)0.1720.240
COF intensityQuantity of commercial organic fertilizer applied per hectare (ton/ha)3.8523.186
COF useDummy variable indicating whether commercial organic fertilizer was used (yes = 1; no = 0)0.9190.272
Farmyard manure useDummy variable indicating whether farmyard manure was used (yes = 1; no = 0)0.1810.386
Bearing area of largest plotBearing area of the largest apple plot (ha)0.3450.168
Fertilization labor priceHired labor wage for fertilizer application (yuan/person-hour)26.82815.769
Village weighted chemical fertilizer priceVillage-year weighted average price of chemical fertilizer (yuan/kg)3.6201.066
Production cycle stageStage of apple production cycle (high = 1; low = 0)0.5660.496
Natural disasterPercentage of production lost due to natural disasters (%)32.81134.780
Pest and diseaseDummy variable indicating whether pest or disease damage occurred (yes = 1; no = 0)0.0600.239
Excellent fruit shareShare of excellent apples in total apple sales quantity0.6100.288
Top two-grade fruit shareShare of the top two apple grades in total apple sales quantity0.7900.252
Top-grade fruit priceAverage realized price of high-grade apples sold by the household (yuan/kg)5.2571.652
Top-grade fruit sales channels
Unified sales by cooperativesYes = 1; no = 00.0030.053
Dealer door-to-door purchasesYes = 1; no = 00.8390.368
Enterprise sales (fresh fruit)Yes = 1; no = 00.0110.105
Direct-to-consumer salesYes = 1; no = 00.0060.075
Apple brokerYes = 1; no = 00.1200.326
Farmers transport apples to dealersYes = 1; no = 00.0210.143

① Unless otherwise stated, all plot-level outcome, input, and management variables refer to the household's largest apple plot. Per-hectare variables are calculated by dividing plot-level values, costs, or quantities by the bearing area of the largest plot. Village-level price variables are measured at the village-year level. ② The full two-year panel contains 992 household-year observations. Excellent fruit share and Top two-grade fruit share are observed for 954 observations; observations without apples reaching the corresponding quality grades, including cases with only defective grade fruit sales, are not used to calculate these grade-share variables. Top-grade fruit price and corresponding sales channels variables are observed for 715 observations because these variables are defined only for households that sold top-grade fruit. For households whose apples did not reach or were not sold as top-grade fruit, the corresponding top-grade price and channel variables are not applicable.

The final sentence of the final paragraph in Section 4.4, “Cost effects,” was duplicated.

A correction has been made to Section 4.4, “Cost effects,” in the final paragraph:

The duplicated final sentence, “Consequently, a considerable share of the additional revenue generated by commercial organic fertilizer use is absorbed by higher variable costs,” has been deleted.

The original version of this article has been updated.

Publisher's note

All claims expressed in this article are solely those of the authors and do not necessarily represent those of their affiliated organizations, or those of the publisher, the editors and the reviewers. Any product that may be evaluated in this article, or claim that may be made by its manufacturer, is not guaranteed or endorsed by the publisher.

Footnotes

Edited and reviewed by: Mengling Zhang, Zhejiang Agriculture and Forestry University, China

Citation

Fang, P., et al. (2026). Correction: Economic viability of commercial organic fertilizer use in sustainable apple production: plot-level evidence from China. Frontiers in Sustainable Food Systems, Volume 10. https://doi.org/
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Volume
10 - 2026

Copyright

Copyright © 2026 Fang, Ma and Lin.

License: https://creativecommons.org/licenses/by/4.0/

*Correspondence: Guanghua Lin

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