Rise in temperature due to climate change would favour the development of pest and pathogen population, which would adversely affect the productivity of crops. The worst affected crop would be cotton (Gossypium hirsutum). Moreover, owing to rise in carbon dioxide (CO2) concentration and temperature, the weed population especially those belonging to Poaceae, Cyperaceae, Euphorbiaceae and Fabaceae families would increase, which would negatively affect the crop yield.

Greetings

An important question, especially in arid regions, where water scarcity and salinity have always been a problem. These problems in arid regions, seems to be escalating with adverse effects of climate change (global warming). I believe that we need to look at our biodiversity resources, both plants and animals. To look for new species that can tolerate higher heats, require lesser water, and can tolerate higher salinity levels (either plants or animals). Hopefully these new species can be domesticated as new crops and livestock for drought and salinity affected arid regions. I think this will give us faster results, than conventional crop and animal breeding programs. Agricultural production of Halophytes and salt-tolerant animals (mamals, bird, and aquatics), (Haloculture) will be the key to food security in salt and drought affected ecosystems and environments in desert, arid regions.

Best wishes

If the climate change from humid to arid and semi-arid did occur in the last 10,000 years before present,the soils would their lose productivity because of calcareousness and subsoil sodicity,which will not allow the free entry of air and rains into the subsoils.

Rise in temperature due to climate change would favour the development of pest and pathogen population, which would adversely affect the productivity of crops. The worst affected crop would be cotton (Gossypium hirsutum). Moreover, owing to rise in carbon dioxide (CO2) concentration and temperature, the weed population especially those belonging to Poaceae, Cyperaceae, Euphorbiaceae and Fabaceae families would increase, which would negatively affect the crop yield.

1. Human Demand and/or Greed

2. Agricultural Marketing and Trade

3. Government Policies

4.Soil and Climatic conditions

5. Terrine and Topography

6. Types of crops cultivated

7. Types of Livestock production associated with agricultural practices

8. Agricultural Operational Practices towards Sustainability

9. Food Habit

10. Agricultural waste management and post harvest technologies

On the spot Pravat.....

Kafula Chisanga Thanks for the support Sir. I have often observed human interactions and policies affects more towards sustainability of agricultural practices and ecological conditions of a particular area than soil and climatic conditions combined, and have found these factors contributing collaterally.

Dear Dr. Sundus Abdulkariem,,

Crop production affects with increasing temperature, salinity, insufficient water, climate conditions, increasing CO2 , agricultural processes, increasing agricultural pests such as weeds, insects, fungi, bacteria, viruses... etc.

With regards

The two factors heat and salinity are going to limit the production of specific crops. Therefore the selection of new cultivars resistant to water evaporation and salinity will be required .This can be done by classical selection and/or the creation of transgenic plants. Soil protection against loss of humus and erosion will be as important (for this purpose many technologies are available).

Rise in temperature due to climate change would enhance the rate of decomposition of organic matter, which would affect the cycling of the nutrients, causing an upset in the fertility status of the soil. This ultimately would lead to an decrease in crop yield.

Devising new varieties that can withstand high temperatures, salinity and drought, which are the prevailing conditions in light of climate changes

Devising new varieties with a short growing season to reduce the water needs.

Cultivation of alternative crops that give the same purpose and have less water consumption and a growing season such as sugar beets instead of sugar cane.

Irrigation at the appropriate times and in the appropriate quantity in each irrigation to protect each drop of water.

Educating farmers and training them on how to adapt the cultivation of different agricultural crops under the current and expected climate conditions through proper farm management in terms of appropriate planting dates, varieties and agricultural processes of drainage, irrigation, fertilization and control.

I think by increasing temperature and co2 under climate change condition crops with c3 cycles will be higher yield than c4 crops because this crops are photorespiration.

Climate change would bring stormier weather by trapping more energy inside the atmosphere as a result of which frequent storms would destroy the crops. Due to rise in global temperature the El Niño event may become more frequent which would disrupt the South west monsoon leading to droughts in India, thus causing a decrease in crop yield.

It would greatly depend on the location. Regions that are already arid and they get hotter due to global warming will experience a negative effect on crop growth. Some regions located in more moderate areas may actually benefit due to higher temperature and higher CO2 available in the atmosphere. Other regions that experience heavy rainfall to begin with may experience excessive flooding leading to damage to crops.

Thanks for sharing Francois......

Climate changes is the current concern for everybody. Yes, elevation of CO2 will be beneficial for C3 plants but mainly for leafy vegetables since this increment in CO2 is also associated with higher temperature which negatively affect flowering and fruit set of fruit vegetables. Depending on the location, the effects will differ but the most common ones we expect are shifting in locations as well as in planting dates due to seasonal shifting. Many countries started to look for alternative crops instead of traditional ones but parallel to this, they must prepare their societies to start changing their food habits.

I think the following link will be helpful

Article Impact Of Climatic Factors On Crop Production - A Review