Organic control RSS

bacteria, benefical bacteria, Organic control, Organic farming, pro-organic, Science -

If everyone switched to organic farming, we couldn’t support the earth's current population - maybe half.”
Nina Fedoroff

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Chemical control, Disease, Organic control, Pest, Roses -

Rose black spot:Rose black spot is a fungal disease of roses where purple or black spots develop on leaves, which often drop early.Quick factsCommon name: Rose black spotScientific name: Diplocarpon rosaePlants affected: RosesMain symptoms: Purple or black spots on leaves, leaves falling earlyCaused by: FungusTiming: Spring onwardsSymptomsThese are variable, depending on the rose variety and the strain of the fungus.You may see the following symptoms:Typically, a rapidly enlarging purplish or black patch appears on the upper leaf surface, with diffuse and radiating strands of the fungus sometimes just visible.Leaf tissues may turn yellow around the spots and the leaf often...

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