Sir; I was intrigued by Chris Wright's logic in his letter published in your September 9 issue. He makes the case that organic production is more expensive because it is more labour intensive than conventional agriculture, which I also believe to be true. So how precisely will having a wider supply base bring prices down, as presumably greater supply means greater labour demand? Organic production helps small animals and birds to live, Wright also tells us. But he has already said that weeds are uprooted by hand, so what will the wildlife feed off? In all the criticism of Food Standards Agency chairman Sir John Krebs' remarks on organic food, the organic industry has failed to fully substantiate its claims. Unless organic promoters can do this they could be accused of being all hysteria and hype. Let's all calm down and get the facts straight. Angela Lea By e-mail {{LETTERS }}