Dear Jaber,

Organic manure has a lot of advantages in water retention, the improvement of rice quality and yield, but the efficacy differs in various locations around the world. In your case, it depends on the oringinal organic content of the tested soil and the severity of the drought stress. If SOC is relatively low (i.e., < 20 g/kg) and the drought stress is not so severe in your field, organic manure application may work well. Good luck!

Best,

Ping

Thank you for your useful description of the mechanism of action of organic fertilizers in how did cause resistance to drought stress in plant?

There are many tropical soils possess organic carbon , much higher than many of the arid/semi-arid soils , still the rice productivity is much lower on tropical soils . Can high  organic carbon content of the soil aid in alleviating drought stress ? . What are the underlying mechanistic insights  about the drought tolerance of crop  vis-à-vis soil organic carbon , can any one further elaborate please?

Thank you for your very useful information tips and useful from the article thank you

Jaber, This is the fact I like to quote to illustrate the power of soil organic matter in relationship to crop production. Most virgin soils were of 5% or more soil organic matter. Through our production situations this is more commonly 1 to 2% with many under 1%. As we lose soil organic matter we lose the ability to retain and recycle water and nutrients. Nutrients are only readily available through water in solution.

The virgin state soil of 5% or more soil organic matter can retain and recycle more than twice it dry weight in water. The 100 kg of dry soil can absorb and retain and provide more 200 kg of water for the crop development.

In the depleted soil in organic matter the same 100 kg of dry soil can absorb and retain and provide less than 30 kg of Water.

By converting a depleted soil into a Carbon charged soil the water capacity of the soil can be improved 6 times and greater.

The Final kicker is that by converting the depleted soil organic matter state reduces the atmospheric content of Carbon and Nitrogen in the atmosphere and can be fundamental for reversing the issues of climate change based on run away greenhouse gas elevation.

Hope this information can be useful to you.  

thanks Dear Paul 

It was incredibly useful information

The answer would be both the ways , depending upon the changes in soil moisture , aggregate stability , and  nutrient pool , a given organic fertilizer maintains . All these will collectively , facilitate lesser accumulation of ROS , that will ensure  higher activity of different dismutases.  The net effect will also depend upon the portion of applied organic matter being partitioned  into active and passive  pools of soil organic carbon 

Organic fertilizer plays a very impressive can the accumulation of water in the soil and can be effective in oxidative stress