Abstract
Field experiment was carried out to study the yield responses of important field crops to elevated air temperature and CO2 fertilization at the Indian Agriculture Research Institute, New Delhi. One promising variety each of rice (Oryza sativa L.), wheat (Triticum aestivum L.), chickpea (Cicer arietinum L.), greengram (Vigna radiata (L) Wilczek), groundnut (Arachis hypogaea L.), mustard (Brassica juncea (L.) Czern & Coss) and potato (Solanum tuberosum L.) were grown to full maturity in small temperature tunnels and FACE (Free Air CO2 Enrichment) under increased temperature (1 - 4°C) and CO2 level (550 ppm), respectively. Economic yield reduced gradually with rise in temperature in all the crops. Among the crops rice, chickpea and mustard have shown greater thermal tolerance, while wheat and groundnut proved to be more thermal sensitive. In case of greengram and potato, increased temperature effect was intermediate. On the other hand CO 2 fertilization enhanced the yield to varying degree in these field crops with highest effect in chickpea and least in cereals (rice and wheat). Results indicate that elevated CO2 could alleviate the negative impact of temperature increase up to 4°C in chickpea and 5°C in mustard. In other crops, elevated CO2 could counter-effect the temperature increase to lesser extent with least degree in wheat (1.5°C). Thus, counter effect of elevated CO2 to rising temperature seems to be crop and location specific. Although, these results are preliminary in nature as experiments with more variables such as biotic factors like pests and weeds, geographical locations, agronomical practices are needed to find precise responses of crops to future climate change scenario.
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Claims 16
Claim · model-written summary
Economic yield of all crops reduced gradually with rising temperature
Not reportedComparator
Verbatim
t0“important field crops”
e1“Economic yield reduced gradually with rise in temperature in all the crops”
Claim · model-written summary
Rice showed greater thermal tolerance under elevated temperature
- Taxon
- rice
Oryza sativae1 - Treatment
- elevated air temperaturet1
- Outcome
- thermal tolerancee1
- Direction
- greatere1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“important field crops”
t1“elevated air temperature”
e1“Among the crops rice, chickpea and mustard have shown greater thermal tolerance, while wheat and groundnut proved to be more thermal sensitive”
Claim · model-written summary
Chickpea showed greater thermal tolerance under elevated temperature
- Taxon
- chickpea
Cicer arietinume1 - Treatment
- elevated air temperaturet1
- Outcome
- thermal tolerancee1
- Direction
- greatere1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“important field crops”
t1“elevated air temperature”
e1“Among the crops rice, chickpea and mustard have shown greater thermal tolerance, while wheat and groundnut proved to be more thermal sensitive”
Claim · model-written summary
Mustard showed greater thermal tolerance under elevated temperature
Not reportedComparator
Verbatim
t0“important field crops”
t1“elevated air temperature”
e1“Among the crops rice, chickpea and mustard have shown greater thermal tolerance, while wheat and groundnut proved to be more thermal sensitive”
Claim · model-written summary
Wheat was more thermal sensitive under elevated temperature
- Taxon
- wheat
Triticum aestivume1 - Treatment
- elevated air temperaturet1
- Outcome
- thermal sensitivee1
- Direction
- more thermal sensitivee1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“important field crops”
t1“elevated air temperature”
e1“Among the crops rice, chickpea and mustard have shown greater thermal tolerance, while wheat and groundnut proved to be more thermal sensitive”
Claim · model-written summary
Groundnut was more thermal sensitive under elevated temperature
- Taxon
- groundnut
Arachis hypogaeae1 - Treatment
- elevated air temperaturet1
- Outcome
- thermal sensitivee1
- Direction
- more thermal sensitivee1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“important field crops”
t1“elevated air temperature”
e1“Among the crops rice, chickpea and mustard have shown greater thermal tolerance, while wheat and groundnut proved to be more thermal sensitive”
Claim · model-written summary
Greengram showed an intermediate temperature effect
- Taxon
- greengram
.jpg?width=60)
Vigna radiata var. radiatae1 - Treatment
- increased temperaturee1
- Outcome
- temperature effecte1
- Direction
- intermediatee1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
t0“important field crops”
t1“elevated air temperature”
e1“In case of greengram and potato, increased temperature effect was intermediate”
Claim · model-written summary
Potato showed an intermediate temperature effect
- Taxon
- potato
Solanum tuberosume1 - Treatment
- increased temperaturee1
- Outcome
- temperature effecte1
- Direction
- intermediatee1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“important field crops”
t1“elevated air temperature”
e1“In case of greengram and potato, increased temperature effect was intermediate”
Claim · model-written summary
CO2 fertilization enhanced the yield of field crops
Not reportedComparator
Verbatim
t0“important field crops”
e1“On the other hand CO 2 fertilization enhanced the yield to varying degree in these field crops with highest effect in chickpea and least in cereals (rice and wheat)”
Claim · model-written summary
CO2 fertilization had the highest yield effect in chickpea
- Taxon
- chickpeaCicer arietinume1
- Treatment
- CO 2 fertilizatione1
- Outcome
- yielde1
- Direction
- higheste1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“important field crops”
e1“On the other hand CO 2 fertilization enhanced the yield to varying degree in these field crops with highest effect in chickpea and least in cereals (rice and wheat)”
Claim · model-written summary
CO2 fertilization had the least yield effect in rice
- Taxon
- riceOryza sativae1
- Treatment
- CO 2 fertilizatione1
- Outcome
- yielde1
- Direction
- leaste1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“important field crops”
e1“On the other hand CO 2 fertilization enhanced the yield to varying degree in these field crops with highest effect in chickpea and least in cereals (rice and wheat)”
Claim · model-written summary
CO2 fertilization had the least yield effect in wheat
- Taxon
- wheatTriticum aestivume1
- Treatment
- CO 2 fertilizatione1
- Outcome
- yielde1
- Direction
- leaste1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“important field crops”
e1“On the other hand CO 2 fertilization enhanced the yield to varying degree in these field crops with highest effect in chickpea and least in cereals (rice and wheat)”
Claim · model-written summary
Elevated CO2 alleviated the negative impact of temperature increase up to 4 degrees C in chickpea
- Taxon
- chickpeaCicer arietinume1
- Treatment
- elevated CO2e1
- Outcome
- negative impact of temperature increasee1
- Direction
- alleviatee1
- Value
- up to 4°Ce1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“important field crops”
e1“Results indicate that elevated CO2 could alleviate the negative impact of temperature increase up to 4°C in chickpea and 5°C in mustard”
Claim · model-written summary
Elevated CO2 alleviated the negative impact of temperature increase up to 5 degrees C in mustard
- Taxon
- mustarde1
- Treatment
- elevated CO2e1
- Outcome
- negative impact of temperature increasee1
- Direction
- alleviatee1
- Value
- 5°Ce1
Not reportedComparator
Verbatim
t0“important field crops”
e1“Results indicate that elevated CO2 could alleviate the negative impact of temperature increase up to 4°C in chickpea and 5°C in mustard”
Claim · model-written summary
Elevated CO2 countered the temperature increase to the least degree in wheat, up to 1.5 degrees C
- Taxon
- wheatTriticum aestivume1
- Treatment
- elevated CO2e1
- Outcome
- counter-effect the temperature increasee1
- Direction
- least degreee1
- Value
- 1.5°Ce1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“important field crops”
e1“In other crops, elevated CO2 could counter-effect the temperature increase to lesser extent with least degree in wheat (1.5°C)”
Claim · model-written summary
The counter effect of elevated CO2 to rising temperature seems crop and location specific
Verbatim
t0“important field crops”
e1“Thus, counter effect of elevated CO2 to rising temperature seems to be crop and location specific”
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