. An address upon farm pests, including insects, Fungi, and animalcules . ified 300 diameters. This rust is so common and so much alikeon all plants, that this plate will answer to rep-resent the fungus wherever found. Let us now for the third time visit our wheat-field. It is ripe^ or else much damaged, possi-bly destroyed, by the fungi. On the straw we shall find black lines, orblackish spots, from the size of a pins head toan inch in length ; this is the mildew, rust, orFuccinia, — it matters not what name it iscalled, — in full maturity, and when once seenit is never forgotten. Botanists m
. An address upon farm pests, including insects, Fungi, and animalcules . ified 300 diameters. This rust is so common and so much alikeon all plants, that this plate will answer to rep-resent the fungus wherever found. Let us now for the third time visit our wheat-field. It is ripe^ or else much damaged, possi-bly destroyed, by the fungi. On the straw we shall find black lines, orblackish spots, from the size of a pins head toan inch in length ; this is the mildew, rust, orFuccinia, — it matters not what name it iscalled, — in full maturity, and when once seenit is never forgotten. Botanists may disputeabout its intermediate stages ; may give it dif-^? ferent names when found on other plants,— but it still remains the great pest of the husbandman. Thereare no lingering doubts in the minds of agriculturists, bot-anists, savans of science, or laborers, that the rust is not injuri-ous, because the most casual observation shows it in the sicklycondition of all plants affected through the season. The manner of impregnation is unknown, or, if known, is in. 53 dispute. Some believe, as the stomata or breathing-pores ofthe plant are open in clamp weather, that the infinitesimal germsenter these pores and gain a foothold, and push their rootletsinto the cellular tissue of the plant. Others think they enterfrom the ground through the roots, and others still do not be-lieve that they enter the plant at all, but that the seeds are poi-soned by the touch of their spores. Be it as it may, we wellknow that it exists, and of course desire to have as little dam-age from it as possible. Observation has shown that rich land,or that manured by old manure, is much more likely to have thegrain crop injured than land not so rich, or manured by greenmanure or some of our fertilizers. This should teach care inthe preparation of our land. Some claim that an admixture ofsulphur in sowing, and others that if it is sifted on the leaves, isa preventive. Careful experiments have shown all s
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