The book Rubber Planting in Mexico And Central America was written by author Pehr Olsson Seffer Here you can read free online of Rubber Planting in Mexico And Central America book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is Rubber Planting in Mexico And Central America a good or bad book?
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The flowers are unisexual, but both sexes occur on the same lree. I have often heard it stated by planters and others, that~ there are two distinct trees, the male and female. It is also said, and generally believed, that the "male trees" do not produce latex as well as the "female. " In my experience all the older trees carry both male or staminate and female or pistillate flowers. While the trees are young they often have only staminate flowers but after reaching a more mature age both sexes ...are present. I think we can safely abandon the idea that some trees are male and therefore no "milkers, " while others are female and good milk producers. Such an analogy is rather far fetched and has a strong flavour of ignorance. I have found trees on which the female flowers have been sterile on account of insufficient development of the ovary. Such trees naturally do not produce fruit. Whether there are any permanently sterile trees is a question yet to be investigated. I have seen numerous instances where a tree had no flowers one year but developed a profusion of both staminate and pistillate flowers the next year.
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