What a pile of shit. Of course Ivor promotes it!
The Desmog Climate Disinformation Database documents, 'individuals and organisations that have helped to delay and distract the public and our elected leaders from taking needed action to reduce greenhouse gas pollution and fight global warming.' It's a who's who of the organised climate change...
skepticalscience.com
Does it really say "CO2 is plant food"? This is classic Dunning Kruger.
In order to grow, plants need light, heat, air, water and nutrients which called growth factors. Plant growth is limited by the factor in the least supply; growth cannot be greater than that allowed by the most limiting factor. Heat and water can severely limit plant growth no matter how much CO2 you have. Soil conditions can worsen too, so that Liebig’s law of the minimum comes into play.
While the idea that CO2 is good for plants or crops sounds like "common sense like most common sense it falls down when tested. Increased CO2 is shown to decrease the nutritional value of crops, like rice.