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Coffee and Global Warming

Released on 2012-01-10 by Emily


World’s coffee crops are under a threat of global warming, which causes droughts and gives rise to temperature. It has forced coffee producers to move to higher altitudes and cooler lands. Global warming has certainly turned growing of coffee into a challenge now.

A research project carried out in Uganda by a UN Environment program concluded that if the temperature rises by two degrees, it will reduce coffee production dramatically.

In past decade, phenomenal changes have been noticed in the environment. All over the world, coffee crops have suffered due to this sudden change in environment. Shade-grown coffee plantations in India were the ones to be badly hit.


Listed below are the various consequences of Global Warming, both direct and indirect, that affect coffee farming.

1. Bio chemical elements of soil have been affected greatly due to rising temperatures, making soil unfit for growing coffee.

2. Because of the green house effect, human’s naked eye can perceive cracking up of soil and there is exposure of surface feeder roots and micro flora to direct sunlight.

3. Histosphere and phyllosphere micro flora are bearing the brunt of damage caused by global warming.

4. Soil’s water holding capacity has decreased.

5. Drought is now seen early in summer and soil becomes excessively wet in rainy weather. Coffee bush is very sensitive to both the conditions.

6. Wilting of plant is observed in severe cases, especially in Arabica (a species of coffee tree) in which the external layer of coffee bush’s leaf is unable to tolerate temperature stress.

7. Balance of nature and stability has been affected, in turn affecting coffee production.

8. The coffee bush has been growing as a self programmed plant over years of evolution. Now, due to global warming, the bush grows in a sheer state of confusion. One can now observe considerable delays in growth of flower primordial, productive woods, and the whole biological clock of coffee plantations going for a toss.

9. Pollination helps with higher yields and primary pollinator agents are honey bees. Bees’ population has been significantly altered, resulting in bad flower setting.

10. Abnormal weather conditions favor proliferation of fungal pathogens and insect pests which are harmful to coffee farms.

11. The coffee bush, under impact of global warming, grows a running blossom which is spread over three months’ period. This is very strenuous to coffee plant.

12. This blossom causes uneven ripening, growth of three different sized berries, and at the time of harvesting, just one set of coffee berries out of the three reach maturity stage. This results in slump in coffee production levels.

13. Qualitatively, berries’ quality is poor than before.


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