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Abstract

Termination of liquid fertilizer application at the visible bud stage or 2 weeks later during production of potted Lilium longiflorum Thunb. ‘Nellie White’ increased foliar chlorosis development relative to fertilization until harvest on plants stored for 3 weeks at 2C in the dark. Drenches of ancymidol applied during early production increased poststorage foliar chlorosis and bud abortion. Polyethylene (PE) lining of boxes used for cold storage and simulated shipment of potted lilies reduced water loss but did not affect subsequent floral longevity, but abortion, or foliar chlorosis. Spermidine application before boxed storage did not influence foliar chlorosis.

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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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-induced petal senescence, flower abscission, epinasty, leaf chlorosis, and leaf abscission make crops unmarketable and increase postproduction shrink ( Jones and Edelman, 2013 ; Jones and Ling, 2012 ). Researchers have investigated the ethylene responsiveness

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in water. Henceforth, free residual chlorine is referred to as free chlorine. Use of chlorine in excess can cause visual injury, including chlorosis (bleaching action of tissues), necrotic mottling (red and black dark spots on the leaf surface

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during the transport and transplanting of seedlings ( Vavrina, 2002 ). Seedlings are also subjected to abiotic stress after transplanting, such as direct sunlight, wind, and temperature extremes. Common symptoms of transplant shock include leaf chlorosis

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crinkling and malformed growth to some collard and kale cultivars ( Harrison et al., 1998 ). Simulated glyphosate drift on pepper ( Capsicum annuum L.) caused chlorotic terminal buds and later chlorosis of the foliage developing from the buds ( Gilreath

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Abstract

A field survey in 1977 and greenhouse studies revealed that chlorosis and stunting in rose (Rosa hybrida L. cv. Summer Snow) budded on Rosa multiflora Thumb. root-stock was due to Mn and A1 toxicity on soils with pH 5.0 or below. Liming reduced Mn and A1 tissue concentrations, promoted root growth, and alleviated chlorosis.

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. Disease severity was evaluated weekly as chlorotic and necrotic lesions and degree of stunting. Chlorosis and necrosis were rated on a 0 to 9 scale based on percentage of symptomatic leaf area (0 = 0%, 1 = 1% to 3%, 2 = 3% to 6%, 3 = 6% to 12%, 4 = 12% to

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% of all leaves symptomatic, 4 = 50% to 75% of all leaves symptomatic, and 5 = more than 75% of all leaves symptomatic. Leaf symptoms included yellowing, blotchy mottle, and reduced size combined with severe chlorosis at advanced stages of the disease

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chlorosis suggested that the selections fell into several categories based on a composite of the three variables that improved the ranking procedure. Two questions remaining after our first efforts were: 1) could the procedure be miniaturized so that

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