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T. Scott Starr and L. F. Thompson

Interveinal chlorosis has been observed on the oldest leaves of several varieties of flowering crabapple (Malus sargentii Rehl). Our objective was to identify the cause of this disorder. Foliage and soil from 20 Sargent crabapple trees growing on 12 different sites were analyzed for possible nutrient deficiencies or excesses. Analyses showed N to be slightly low, Ca high, and Mg low in all leaf samples. Soil analysis showed Ca to be abnormally high at all sites. We concluded that the leaf discoloration was caused by a Mg deficiency due to Ca suppression of the Mg and that the low foliar N might be a contributing factor in the interveinal chlorosis.

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Christopher Parry and Bruce Bugbee

leaching significantly increased interveinal chlorosis likely due to elevated P in the root-zone and possible leaching of the siderophores from the rhizosphere. These results suggest that reducing excess root-zone P in greenhouse irrigation solutions can

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W. Garrett Owen

solution pH and thus limited nutrient availability and uptake. By 8 WAT, all cultivars grown in substrates incorporated with DL+HL exhibited chlorosis (yellowing) and interveinal chlorosis, which is speculated to be high pH–induced Fe deficiency ( Fig. 4

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Jayesh B. Samtani, John B. Masiunas, and James E. Appleby

development, the extent of injury, and the rate of recovery. In 2005, the primary author also specifically rated loss of interveinal tissues (1 = no tatters to 5 = all leaves are skeletonized). Herbicides often cause chlorosis, browning, and necrosis of leaf

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Lina Fu, Lijun Chai, Dekuan Ding, Zhiyong Pan, and Shu’ang Peng

rootstock showed obvious interveinal chlorosis in young leaves ( Fig. 1C ). This is a common symptom of Fe-deficiency chlorosis, so the basic soil properties were measured to confirm our speculation. Soil pH and the concentration of Ca were much higher than

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Youping Sun, Guihong Bi, Genhua Niu, and Christina Perez

+ width 1 + width 2)/3. Phytotoxicity symptoms, reflected as curled leaves, and/or interveinal chlorosis, or bleaching of new growth were evaluated 2 weeks (i.e., 26 July) and 6 weeks after dikegulac sodium application on a 0 to 10 visual scale; 0

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Monica Ozores-Hampton

interveinal chlorosis with a yellowing of the leaf tissue in the interveinal region while the veins remain green. Due to poor mobility within the plant, Fe deficiency symptoms are common in the youngest leaves first, especially at the base of the leaves. Under

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Mary Jane Clark and Youbin Zheng

. Symbol omission for the conventional fertilization method at 16.0 g/pot N on 19 July 2016 is a result of the lack of plant survival. Visual observations of leaf color for the C fertilizer method detected interveinal chlorosis for more plants at 16.0 g

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Richard J. Heerema, Dawn VanLeeuwen, Marisa Y. Thompson, Joshua D. Sherman, Mary J. Comeau, and James L. Walworth

rosette appearance), severely reduced leaf area, wavy leaf margins, interveinal leaf chlorosis and necrosis, and shoot terminal dieback ( Alben et al., 1932a ; Heerema, 2013 ). Along with reduced leaflet area, Ojeda-Barrios et al. (2012) showed that in

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Youbin Zheng, Diane Feliciano Cayanan, and Mike Dixon

replications (30 subsamples). Points for the same day bearing the same letter (beside the symbol) indicate that the means are not significantly different at the P ≤ 0.05 level. During the last week of the experiment, there was interveinal chlorosis on