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Impact of climate change on water requirement and yield of tomato over different agro-climatic zones of Tamil Nadu


Affiliations
1 Meteorological Centre, Indian Meteorological Department, Hyderabad 500 016, India
2 Tamil Nadu Agricultural University, Coimbatore 641 003, India
3 Agro Climate Research Centre, Tamil Nadu Agricultural University, Coimbatore 641 003, India
4 Exilir consulting, Tiruchirappalli 620 002, India
5 Dhanalakhmi Srinivasan Agricultural College, Tiruchirappalli 621 112, India
6 Horticultural College and Research Institute (Women), Tiruchirappalli 620 027, India
7 Krishi Vigyan Kendra, Tiruchirappalli 639 115, India

The AquaCrop model was utilized to assess the impact of climate change on tomato cultivation in different agro-climatic zones of Tamil Nadu. The study exami­ned variations in water requirement, yield and water-use efficiency (WUE) from 1980 to 2022. Results indicated that rising temperatures led to decreased tomato yield, with a 9% average decrease at a 2°C temperature increase, highlighting the crop’s sensitivity to heat stress. Furthermore, areas with lower rainfall demonstrated higher WUE, emphasizing the importance of efficient water use. The study underscores the need for adaptive strategies such as developing heat-tolerant varieties and optimizing irrigation practices to address the challenges of climate change on tomato cultivation

Keywords

AquaCrop, climate change, tomato yield, water-use efficiency, water requirement.
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  • Impact of climate change on water requirement and yield of tomato over different agro-climatic zones of Tamil Nadu

Abstract Views: 88  | 

Authors

V. Guhan
Meteorological Centre, Indian Meteorological Department, Hyderabad 500 016, India
V. Geethalakshmi
Tamil Nadu Agricultural University, Coimbatore 641 003, India
K. Bhuvaneshwari
Agro Climate Research Centre, Tamil Nadu Agricultural University, Coimbatore 641 003, India
N. Kowshika
Exilir consulting, Tiruchirappalli 620 002, India
V. Vinothkumar
Dhanalakhmi Srinivasan Agricultural College, Tiruchirappalli 621 112, India
S. Nithila
Horticultural College and Research Institute (Women), Tiruchirappalli 620 027, India
M. Marimuthu
Krishi Vigyan Kendra, Tiruchirappalli 639 115, India

Abstract


The AquaCrop model was utilized to assess the impact of climate change on tomato cultivation in different agro-climatic zones of Tamil Nadu. The study exami­ned variations in water requirement, yield and water-use efficiency (WUE) from 1980 to 2022. Results indicated that rising temperatures led to decreased tomato yield, with a 9% average decrease at a 2°C temperature increase, highlighting the crop’s sensitivity to heat stress. Furthermore, areas with lower rainfall demonstrated higher WUE, emphasizing the importance of efficient water use. The study underscores the need for adaptive strategies such as developing heat-tolerant varieties and optimizing irrigation practices to address the challenges of climate change on tomato cultivation

Keywords


AquaCrop, climate change, tomato yield, water-use efficiency, water requirement.



DOI: https://doi.org/10.18520/cs%2Fv127%2Fi11%2F1330-1334