Paper · 2021 · Journal of Experimental Biology and Agricultural Sciences

DROUGHT MITIGATION THROUGH HYDROGEL APPLICATION IN RICE (Oryza sativa L.) CULTIVATION

Boreddy Surya Prakash Reddy; Sriram Vasudevan; Shibu K Mani; et al.

3
claims
6
verbatim quotes
2
citations
2
research areas
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Open access · cc-by-nc

Abstract

Sustainability in irrigation is an essential step towards responsible water consumption. In recent years, many studies have sketched climate-resilient agricultural practices to fight drought and uncertain rainfall patterns. Major rain-fed crops such as paddy and wheat require aid when there are abnormal dry spells. To mitigate the loss of crops from such events, superabsorbent polymers can be used. Soils amended with hydrogel or Superabsorbent polymer (SAP) retain moisture during drought to prevent loss of water through evaporation and percolation. This allows the crop to grow with less shock from drought. This study compares rice (Oryza sativa L.) growth rate under application (treatment groups) and non-application (control groups) of hydrogel, considering their high-water requirement. NDLR07 (recently developed) and BPT5204 (local variety) rice varieties were chosen for the current study. Randomized controlled trials were performed for each variety on a control group (NC & BC) and 3 treatment groups with 20% (NT20 & BT20), 40% (NT40 & BT40), and 60% (NT60 & BT60) deficit water supplies respectively. N, T, C refers to seed type, treatment group, control group respectively. Intermittent drought condition was imposed for 14 days to assess the resilience of crops. The water retention capacity of the sandy loam soil was better for treatment groups by 20% than control groups even at an average temperature of 40 ℃. Treatment groups continued growing through the drought phase and after, while control groups showed stagnation. Among the tested treatment groups, NT20 had the highest growth among all trials. The results of the study suggested that hydrogel application can help to combat droughts and thereby contribute to sustainable agricultural production by restricting the involvement of climate changes.

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Claims 3

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Hydrogel treatment increased sandy loam soil water retention by 20% relative to controls at 40 ℃.

Treatment
hydrogele1
Outcome
water retention capacity of the sandy loam soile0
Direction
bettere0
Value
20%e0
Qualifier
average temperature of 40 ℃e0
Comparator
control groupse0

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 water retention capacity of the sandy loam soil was better for treatment groups by 20% than control groups even at an average temperature of 40 ℃”

✓ located verbatim in the source · abstract, characters 1283–1432 · show in text ↑
e1

“This study compares rice (Oryza sativa L.) growth rate under application (treatment groups) and non-application (control groups) of hydrogel”

✓ located verbatim in the source · abstract, characters 614–754 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Hydrogel treated rice continued growing through and after drought, while controls stagnated.

Treatment
hydrogele1
Outcome
growinge0
Direction
continued growinge0
Qualifier
through the drought phase and aftere0
Comparator
control groupse0

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

“Treatment groups continued growing through the drought phase and after, while control groups showed stagnation”

✓ located verbatim in the source · abstract, characters 1434–1544 · show in text ↑
e1

“This study compares rice (Oryza sativa L.) growth rate under application (treatment groups) and non-application (control groups) of hydrogel”

✓ located verbatim in the source · abstract, characters 614–754 · show in text ↑
Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

NT20 had the highest rice growth among tested treatments.

Treatment
NT20e0
Outcome
growthe0
Direction
higheste0

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

“Among the tested treatment groups, NT20 had the highest growth among all trials”

✓ located verbatim in the source · abstract, characters 1546–1625 · show in text ↑
e1

“This study compares rice (Oryza sativa L.) growth rate”

✓ located verbatim in the source · abstract, characters 614–668 · show in text ↑

other · physiology: water · Oryza sativa (rice)Results agree

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