Losses to cotton, what to look for and where to find it, being one of a series of articles in relation to crops, their common diseases and insect pests to which they are subject . QQ Q O o -?2 ^ I ii o -4^..: .V ?* 32. 33 a peculiar sickly yellowish-green color on both leaves andstem. In times of drought affected plants are the first toshow the lack of water and may wilt slightly in the middleof the day. If snch a plant is pulled carefully or, better,dug up with a shovel, the roots will be found to be coveredwith swellings, or galls, from the size of a pinhead to half-inch or more in diameter.
Losses to cotton, what to look for and where to find it, being one of a series of articles in relation to crops, their common diseases and insect pests to which they are subject . QQ Q O o -?2 ^ I ii o -4^..: .V ?* 32. 33 a peculiar sickly yellowish-green color on both leaves andstem. In times of drought affected plants are the first toshow the lack of water and may wilt slightly in the middleof the day. If snch a plant is pulled carefully or, better,dug up with a shovel, the roots will be found to be coveredwith swellings, or galls, from the size of a pinhead to half-inch or more in diameter. If one of these knots is brokenopen, numerous pearly white rounded bodies about half thesize of a small pinhead can often be seen with the nakedeye. When root knot occurs with wilt, which is often tliecase, the symptoms of both diseases are present. Theplants usually all die or are so badly dwarfed that littleor no cotton is produced. Root knot is essentially a disease of light soils. Al-though the disease may occur on heavier soils than wilt,yet it is not as a rule serious on soils containing a largeportion of clay. The jilaces of greatest damage are usuallylight sandy spots or ridges in infected fields. 34 P
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Keywords: ., bookcentury1900, bookdecade1910, bookidlossestocott, bookyear1919
