Paper · 2021 · Agriculture

Hazard Analysis of Traditional Post-Harvest Operation Methods and the Loss Reduction Effect Based on Five Time (5T) Management: The Case of Rice in Jilin Province, China

Na Zhang; Wenfu Wu; Yujia Wang; et al.

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claims
12
verbatim quotes
13
citations
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research areas
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Open access · cc-by

Abstract

Traditional post-harvest operation methods applied in rice fields lack advanced management knowledge and technology, which has led to post-harvest losses. We proposed the concept of Five Time (5T) management for the first time. 5T management divides the whole life cycle of rice into different growth time interval to complete process management. This paper mainly introduces the management of rice grain period, that is, the post-harvest management period, including the operation process management of harvesting, field stacking, drying, warehousing, and storing. In 2019, our research team formulated the 5T management method, which considers the entire post-harvest process, and carried out a pilot application of this method at the Jilin Rice Industry Alliance of Jilin Province. Moreover, to promote the 5T management method, our research team carried out follow-up experiments in rice production enterprises and found severe post-harvest rice losses. This paper combined a large number of literature and the basic theory research of rice post-harvest to analyze the traditional methods for post-harvest processing and the associated rice losses. By implementing the 5T management method, 4.33% of losses incurred during the T1 harvesting period could be recovered. In the T2 field period, drying rice within 48 h after harvesting could reduce losses by 2.5%. In the T3 drying period, the loss rate could be reduced by 1.6% if traditional drying methods were replaced by mechanical drying and by 0.6% if cyclic drying was implemented to prevent over-drying. In the T5 storage period, the loss rate of 7% could be reduced by adopting advanced grain storage technologies such as low-temperature storage. Overall, the rice loss rate could be reduced by 15.43%, which is equivalent to a yield of 32.68 million tonnes of rice. The important factors in each period are strictly controlled in the 5T management method to prevent the post-harvest losses caused by flawed concepts and improper management and to increase the amount of usable fertile land.

Abstract from the paper’s OpenAlex record; open copy licensed cc-by. Read at the source ↗

The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.

Claims 7

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

5T management could recover 4.33% of harvesting-period losses.

Treatment
5T management methode0
Outcome
losses incurred during the T1 harvesting periode0
Direction
recoverede0
Value
4.33%e0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“By implementing the 5T management method, 4.33% of losses incurred during the T1 harvesting period could be recovered”

✓ located verbatim in the source · abstract, characters 1153–1270 · show in text ↑
t0

“Rice”

✓ located verbatim in the source · title, characters 140–144 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Drying within 48 hours after harvest could reduce field-period losses by 2.5%.

Treatment
drying rice within 48 h after harvestinge0
Outcome
lossese0
Direction
reducee0
Value
2.5%e0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“In the T2 field period, drying rice within 48 h after harvesting could reduce losses by 2.5%”

✓ located verbatim in the source · abstract, characters 1272–1364 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Mechanical drying could reduce loss rate by 1.6% versus traditional drying.

Treatment
mechanical dryinge0
Outcome
loss ratee0
Direction
reducede0
Value
1.6%e0
Comparator
traditional drying methodse0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“the loss rate could be reduced by 1.6% if traditional drying methods were replaced by mechanical drying”

✓ located verbatim in the source · abstract, characters 1391–1494 · show in text ↑
t0

“Rice”

✓ located verbatim in the source · title, characters 140–144 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Cyclic drying could reduce loss rate by 0.6%.

Treatment
cyclic dryinge0
Outcome
loss ratee1
Direction
reducede1
Value
0.6%e0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“by 0.6% if cyclic drying was implemented to prevent over-drying”

✓ located verbatim in the source · abstract, characters 1499–1562 · show in text ↑
e1

“the loss rate could be reduced”

✓ located verbatim in the source · abstract, characters 1391–1421 · show in text ↑
t0

“Rice”

✓ located verbatim in the source · title, characters 140–144 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Advanced grain storage could reduce the 7% storage-period loss rate.

Treatment
advanced grain storage technologies such as low-temperature storagee0
Outcome
loss ratee0
Direction
reducede0
Value
7%e0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“the loss rate of 7% could be reduced by adopting advanced grain storage technologies such as low-temperature storage”

✓ located verbatim in the source · abstract, characters 1590–1706 · show in text ↑
t0

“Rice”

✓ located verbatim in the source · title, characters 140–144 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

The total rice loss rate could be reduced by 15.43%.

Outcome
rice loss ratee0
Direction
reducede0
Value
15.43%e0

Not reportedTreatmentComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“Overall, the rice loss rate could be reduced by 15.43%”

✓ located verbatim in the source · abstract, characters 1708–1762 · show in text ↑
Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

The estimated recovered yield was 32.68 million tonnes of rice.

Outcome
yielde0
Value
32.68 million tonnese0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“which is equivalent to a yield of 32.68 million tonnes of rice”

✓ located verbatim in the source · abstract, characters 1764–1826 · show in text ↑

processing · yield · Oryza sativa (rice)Positive and negative results

114 papers: 88 positive, 26 negative or no effect

87 papers in the same direction as this paper · 21 in the opposite direction · 5 reporting no difference from an alternative

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  2. no effect
  3. negative

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