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Christy T. Carter and Catharine M. Grieve

visual evidence of potassium deficiency or sodium toxicity in the plants tested, even at the highest salinities. Typical indicators of potassium deficiency would include interveinal chlorosis along the margins appearing as a yellow to tan color that

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Arthur Villordon and Jeffrey C. Gregorie

magnitudes were observed in cultivars MU and OK ( Table 2 ). At 15 d, leaf tissue toxicity symptoms were already visible in BX plants grown in 2XB, that is, pale green to whitish interveinal chlorosis ( O’Sullivan et al., 1997 ) as well as the onset of

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Dimitrios Savvas, Dimitrios Papastavrou, Georgia Ntatsi, Andreas Ropokis, C. Olympios, Hagen Hartmann, and Dietmar Schwarz

-Man’ rootstocks. Mn toxicity appeared first as severe interveinal chlorosis resembling Fe deficiency in the upper leaves, which was followed by the occurrence of extensive dark spots on the leaf veins. Both the Mn level and the rootstock affected the uptake and

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James L. Walworth, Scott A. White, Mary J. Comeau, and Richard J. Heerema

, occurs when leaf and internode size are reduced. Severe deficiency symptoms also include interveinal chlorosis, eventually developing into necrosis. Terminal growth dieback can occur in severe cases. Zn deficiency can reduce catkin length, number of

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James D. McCreight, Hsing-Yeh Liu, and Thomas A. Turini

spots and terminal buds, leaf curling and crumpling, and interveinal yellowing. In addition, plants may be stunted in size ( Fig. 1 ). When severe and widespread CuLCrV symptoms were observed in commercial melon fields early in the season in several

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Khalid F. Almutairi, Rui M.A. Machado, David R. Bryla, and Bernadine C. Strik

cultivars when soil pH is too high ( Strik et al., 2014 ; 2017 ). However, none of the plants in the study exhibited interveinal Fe chlorosis commonly associated with high soil pH in northern highbush blueberry ( Polashock et al., 2016 ). This suggests that

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Michele R. Warmund and J.W. Van Sambeek

produce sparse leaves with interveinal chlorosis and these fruiting spurs often die the next winter ( Grant et al., 1985 ). Necrosis has also been reported on the basal area of pecan kernels and it affects certain cultivars such as ‘Pawnee’, ‘Choctaw’, and

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Humberto Núñez-Moreno, James L. Walworth, and Andrew P. Pond

·g −1 dry matter ( Hu and Sparks, 1991 ). The lack of chlorophyll in Zn-deficient leaves is related with the characteristic interveinal chlorosis in Zn-deficient pecan trees. Because the nut yield and quality from the trees in this study were relatively

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Youssef Rouphael, Mariateresa Cardarelli, Giuseppe Colla, and Elvira Rea

( Bulder et al., 1990 ) and high ( Rivero et al., 2003 ) temperatures and against iron chlorosis in calcareous soils ( Romera et al., 1991 ) and to enhance nutrient uptake and mineral nutrition ( Pulgar et al., 2000 ; Ruiz et al., 1997 ), increase

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Daniel P. Gillespie, Gio Papio, and Chieri Kubota

concentration improved tomato ( Solanum lycopersicum ) and lettuce growth at pH 4.0 and 5.0. Another example by Smith et al. (2004) showed that the higher fertilizer concentrations ameliorated leaf chlorosis of geranium ( Pelargonium × hortorum ) plants