Inorganic Plant Poisons and Stimulants

"Inorganic Plant Poisons and Stimulants" by Winifred Elsie Brenchley is a scientific book from the early 1900s looking into how inorganic stuff affects how plants grow and develop, both in good and bad ways. The goal is to gather and study all the research about these substances and how they might be used in farming. The book starts by talking about how farming has changed, with things like artificial fertilizers, and how there's different ideas about whether inorganic substances can help plants. Brenchley talks about the history of plant nutrition and how substances are sorted by how they affect plants. She points out that it's tricky to figure out how some inorganic compounds can be both helpful and harmful, because it depends on how much is used and what else is mixed in, suggesting more research is needed to understand how plants and chemicals interact.