Research Issues in Determining the Effects of Changing Climate Variability on Crop Yields

2015 ◽  
pp. 123-143 ◽  
Author(s):  
L. O. Mearns
Keyword(s):  
Climate Variability ◽  
Crop Yields ◽  
Research Issues ◽  
Changing Climate

El Niño Southern Oscillation and decadal climate variability impacts on crop yields and adaptation value.

2021 ◽  
Vol 16 (43) ◽  
pp. 1-13
Author(s):  
Minglu Wang ◽  
◽  
Yu-Kai Huang ◽  
Muxi Cheng ◽  
Bingru Sheng ◽  
...  
Keyword(s):  
Climate Variability ◽  
El Niño ◽  
Crop Yields ◽  
El Nino ◽  
Southern Oscillation ◽  
El Niño Southern Oscillation ◽  
El Nino Southern Oscillation ◽  
Decadal Climate Variability ◽  
Research Issues ◽  
Decadal Climate

Ocean-atmospheric phenomena (OAP) have been found to be associated with regional climate variability and, in turn, agricultural production. Previous research has shown that advance information on OAP and its climate implications could provide valuable opportunities to adjust agriculture practices. In this study, we review OAP effects on crop yields, covering both shorter-term El Niño Southern Oscillation (ENSO) and longer-term ocean-related decadal climate variability (DCV) phenomena, such as Pacific Decadal Oscillation (PDO), the Tropical Atlantic Gradient (TAG), and the West Pacific Warm Pool (WPWP). We review both statistical approaches and simulation models that have been used to assess OAP impacts on crop yields. Findings show heterogeneous impacts across crops, regions, OAP phases, and seasons. Evidence also indicates that more frequent and extreme OAP phases would damage agriculture. However, economic gains could be achieved via adaptation strategies responding to the early release of OAP phase information. Discussions on current knowledge gaps and future research issues are included.

El Niño southern oscillation and decadal climate variability impacts on crop yields and adaptation value.

2021 ◽  
Vol 16 (043) ◽  
Author(s):  
Ming-lu Wang
Keyword(s):  
Climate Variability ◽  
El Niño ◽  
Crop Yields ◽  
El Nino ◽  
Southern Oscillation ◽  
El Niño Southern Oscillation ◽  
El Nino Southern Oscillation ◽  
Decadal Climate Variability ◽  
Research Issues ◽  
Decadal Climate

Abstract Ocean-atmospheric phenomena (OAP) have been found to be associated with regional climate variability and, in turn, agricultural production. Previous research has shown that advance information on OAP and its climate implications could provide valuable opportunities to adjust agriculture practices. In this study, we review OAP effects on crop yields, covering both shorter-term El Niño Southern Oscillation (ENSO) and longer-term ocean-related decadal climate variability (DCV) phenomena, such as Pacific Decadal Oscillation (PDO), the Tropical Atlantic Gradient (TAG), and the West Pacific Warm Pool (WPWP). We review both statistical approaches and simulation models that have been used to assess OAP impacts on crop yields. Findings show heterogeneous impacts across crops, regions, OAP phases, and seasons. Evidence also indicates that more frequent and extreme OAP phases would damage agriculture. However, economic gains could be achieved via adaptation strategies responding to the early release of OAP phase information. Discussions on current knowledge gaps and future research issues are included.

Influence of climate variability and length of rainy season on crop yields in semiarid Botswana

2018 ◽  
Vol 248 ◽  
pp. 130-144 ◽  
Author(s):  
Jimmy Byakatonda ◽  
B.P. Parida ◽  
Piet K. Kenabatho ◽  
D.B. Moalafhi
Keyword(s):  
Climate Variability ◽  
Rainy Season ◽  
Crop Yields

scholarly journals Soil-dependent responses of US crop yields to climate variability and depth to groundwater

2021 ◽  
Vol 190 ◽  
pp. 103085
Author(s):  
Jingyi Huang ◽  
Alfred E. Hartemink ◽  
Christopher J. Kucharik
Keyword(s):  
Climate Variability ◽  
Crop Yields

South Africa’s increasing climate variability and its effect on food production

2021 ◽  
pp. 003072702110049
Author(s):  
Mashudu Tshikovhi ◽  
Roscoe Bertrum van Wyk
Keyword(s):  
South Africa ◽  
Climate Variability ◽  
Food Production ◽  
Fixed Effects ◽  
Crop Yields ◽  
Negative Impact ◽  
Secondary Data ◽  
Mean Annual Temperature ◽  
Fixed Effects Panel Regression ◽  
The Impact

This study examines the impact of increasing climate variability on food production in South Africa, focusing on maize and wheat yields. A two-way fixed effects panel regression model was used to assess the climate variability impacts, analysing secondary data for the period 2000 to 2019 for nine provinces in South Africa. The study found that increasing climate variability has a negative impact on maize and wheat production in South Africa. Specifically, the results indicated a negative correlation between mean annual temperature with both maize and wheat yields. A decrease in precipitation affected maize yields negatively, while the impact on wheat yields was positive, although insignificant. This analysis, therefore, depicted that crop yields generally increase with more annual precipitation and decrease with higher temperatures. The study recommends that funding initiatives to educate farmers on increasing climate variability and its effects on farming activities in South Africa should be prioritised.

ENSO, climate variability and crop yields in China

2013 ◽  
Vol 58 (2) ◽  
pp. 133-148 ◽  
Author(s):  
J Shuai ◽  
Z Zhang ◽  
DZ Sun ◽  
F Tao ◽  
P Shi
Keyword(s):  
Climate Variability ◽  
Crop Yields

An Integrated Assessment of the Impacts of Changing Climate Variability on Agricultural Productivity and Profitability in an Irrigated Mediterranean Catchment

2013 ◽  
Vol 27 (10) ◽  
pp. 3607-3622 ◽  
Author(s):  
Gabriele Dono ◽  
Raffaele Cortignani ◽  
Luca Doro ◽  
Luca Giraldo ◽  
Luigi Ledda ◽  
...  
Keyword(s):  
Climate Variability ◽  
Integrated Assessment ◽  
Agricultural Productivity ◽  
Changing Climate

CLIMATE VARIABILITY AND CHANGE IN SOUTHERN MALI: LEARNING FROM FARMER PERCEPTIONS AND ON-FARM TRIALS

2015 ◽  
Vol 51 (4) ◽  
pp. 615-634 ◽  
Author(s):  
BOUBA TRAORE ◽  
MARK T. VAN WIJK ◽  
KATRIEN DESCHEEMAEKER ◽  
MARC CORBEELS ◽  
MARIANA C. RUFINO ◽  
...  
Keyword(s):  
Climate Variability ◽  
Crop Yields ◽  
Pennisetum Glaucum ◽  
Meteorological Data ◽  
Rainfall Variability ◽  
Mineral Fertilizer ◽  
Annual Rainfall ◽  
Climate Variability And Change ◽  
Gross Margin ◽  
On Farm

SUMMARYAgricultural production in the Sudano–Sahelian zone of west Africa is highly vulnerable to the impacts of climate variability and climate change. The present study aimed to understand farmers’ perceptions of climate variability and change and to evaluate adaptation options together with farmers, including tactical management of planting date in combination with the use of mineral fertilizer. Farmers perceived an increase in annual rainfall variability, an increase in the occurrence of dry spells during the rainy season, and an increase in temperature. Overall, this is in line with the observed meteorological data. Drought tolerant, short maturing crop varieties and appropriate planting dates were the commonly preferred adaptation strategies to deal with climate variability. On-farm trials confirmed that planting delays significantly reduce crop yields. The use of mineral fertilizer is often promoted, but risky for smallholders: although larger fertilizer applications increased the yield of maize (Zea mays) and millet (Pennisetum glaucum) significantly, a gross margin analysis indicated that it did not lead to more profit for all farmers. We conclude that integrating management of nutrients and planting time with improved farmer access to timely weather information, especially on the onset of the rains, is critical to enhancing adaptive capacity to increased climate variability and change.

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