Abstract
Microwave (MW) soil heating has been shown to deplete the soil weed seedbank and increase crop productivity. However, the impact of MW soil heating on the nutritive value of crops is unknown. In this study, two field trials were conducted to evaluate the effect of pre-sowing MW soil treatment with a duration of 60 s and an untreated control, which were assigned in a randomized complete block design with five replicates at two locations, on the yield and nitrogen (N) accumulation pattern of rice crops. At Jerilderie site, soil heating at up to 70–75 °C significantly (p ˂ 0.09) increased the rice biomass yield by 43.03% compared with rice biomass yield in untreated soils, while at Dookie site no significant increase in biomass yield was detected. Dry matter digestibility (DMD), ash, and N% did not change, whereas the N accumulation in dry biomass was significantly (p ˂ 0.09) higher at both sites (8.2% at Dookie and 43.4% at Jerilderie) and N use efficiency (10–40%) increased in response to MW soil treatment. The current study suggests that MW soil treatment can potentially enhance the crop productivity and N accumulation in dry biomass under field conditions. Future research is needed to understand the impact of MW soil heating on the productivity and nutritive value of different fodder crops under field conditions.
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Claims 6
Claim · model-written summary
Microwave soil heating increased rice biomass yield 43.03% at Jerilderie.
- Taxon
- rice
Oryza sativae0 - Treatment
- soil heating at up to 70–75 °Ce0
- Outcome
- rice biomass yielde0
- Direction
- increasede0
- Value
- 43.03%e0
- Comparator
- untreated soilse0
- Setting
- Jerilderie sitee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At Jerilderie site, soil heating at up to 70–75 °C significantly (p ˂ 0.09) increased the rice biomass yield by 43.03% compared with rice biomass yield in untreated soils, while at Dookie site no significant increase in biomass yield was detected.”
Claim · model-written summary
No significant rice biomass increase was detected at Dookie.
- Taxon
- riceOryza sativae0
- Treatment
- soil heatinge0
- Outcome
- biomass yielde0
- Direction
- no significant increasee0
- Comparator
- untreated soilse0
- Setting
- Dookie sitee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At Jerilderie site, soil heating at up to 70–75 °C significantly (p ˂ 0.09) increased the rice biomass yield by 43.03% compared with rice biomass yield in untreated soils, while at Dookie site no significant increase in biomass yield was detected.”
Claim · model-written summary
Dry matter digestibility, ash, and nitrogen percentage did not change.
- Taxon
- riceOryza sativat0
- Treatment
- MW soil treatmente0
- Outcome
- Dry matter digestibility (DMD), ash, and N%e0
- Direction
- did not changee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Dry matter digestibility (DMD), ash, and N% did not change, whereas the N accumulation in dry biomass was significantly (p ˂ 0.09) higher at both sites (8.2% at Dookie and 43.4% at Jerilderie) and N use efficiency (10–40%) increased in response to MW soil treatment.”
t0“Rice Crop”
Claim · model-written summary
Rice dry biomass nitrogen accumulation was 8.2% higher at Dookie.
- Taxon
- riceOryza sativat0
- Treatment
- MW soil treatmente0
- Outcome
- N accumulation in dry biomasse0
- Direction
- highere0
- Value
- 8.2%e0
- Setting
- Dookiee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Dry matter digestibility (DMD), ash, and N% did not change, whereas the N accumulation in dry biomass was significantly (p ˂ 0.09) higher at both sites (8.2% at Dookie and 43.4% at Jerilderie) and N use efficiency (10–40%) increased in response to MW soil treatment.”
t0“Rice Crop”
Claim · model-written summary
Rice dry biomass nitrogen accumulation was 43.4% higher at Jerilderie.
- Taxon
- riceOryza sativat0
- Treatment
- MW soil treatmente0
- Outcome
- N accumulation in dry biomasse0
- Direction
- highere0
- Value
- 43.4%e0
- Setting
- Jerilderiee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Dry matter digestibility (DMD), ash, and N% did not change, whereas the N accumulation in dry biomass was significantly (p ˂ 0.09) higher at both sites (8.2% at Dookie and 43.4% at Jerilderie) and N use efficiency (10–40%) increased in response to MW soil treatment.”
t0“Rice Crop”
Claim · model-written summary
Rice nitrogen use efficiency increased by 10–40% under microwave treatment.
- Taxon
- riceOryza sativat0
- Treatment
- MW soil treatmente0
- Outcome
- N use efficiencye0
- Direction
- increasede0
- Value
- 10–40%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“N use efficiency (10–40%) increased in response to MW soil treatment.”
t0“Rice Crop”
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