. Annals of applied biology. Biology, Economic; Biochemistry. Albert Howard 379 during the rain. That the rise of the subsoil water combined with the consolidation of the surface soil does interfere with soil-aeration is shown by the periodic determination of the soil gases at Pusa during 1919 (Table I), a year when rainfall was below the average and when the movements of the ground water were very slight. During this year, indigo wilt was almost negligible and only made. Fig. 2. Rise and fall of the river and well levels at Pusa in 1919. its appearance at Pusa on two occasions, between July 2
. Annals of applied biology. Biology, Economic; Biochemistry. Albert Howard 379 during the rain. That the rise of the subsoil water combined with the consolidation of the surface soil does interfere with soil-aeration is shown by the periodic determination of the soil gases at Pusa during 1919 (Table I), a year when rainfall was below the average and when the movements of the ground water were very slight. During this year, indigo wilt was almost negligible and only made. Fig. 2. Rise and fall of the river and well levels at Pusa in 1919. its appearance at Pusa on two occasions, between July 23rd and Aug. 7th, and again between Sept. 1st and 23rd. A reference to Fig. 2 will show that these attacks followed a rise of the ground water combined with heavy rain. During these periods, the roots of many of the affected plants were exposed and compared with those of normal individuals. In all cases, most of the nodules and fine roots of the wilted plants were dead except a very few near the surface of the ground. The root tips of 25—2. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Association of Applied Biologists; Association of Economic Biologists. [Wellesbourne, Warwick, etc. ] Association of Applied Biologists [etc. ]
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectbiochem, bookyear1921
