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then decompose the root wood as substrate. Such destruction to the root system over time reduces yield and diminishes growth capacity ( Baumgartner, 2004 ), eventually killing infected trees. Management of Armillaria root disease focuses mainly on

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microbial activity exclusive of the potting mix used in the greenhouse studies. Because the potting mix is composed of 100% organic material, it is subject to microbial decomposition and the release of CO 2 after watering. The soil control [low in organic C

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green color retention in the fall, which is an important characteristic for warm-season turfgrass. Table 1. Analysis of variance of buffalograss half-sib populations and their parents for turfgrass lateral spread, genetic color, spring density, and

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after repeated cropping was the result of the autotoxicity of compounds released into the soil in root exudates and by decomposing root tissues ( Yu, 2001 ; Yu et al., 2000 ). The allelopathic potential of watermelon plants was attributed to phenolic

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expanded leaves of five randomly selected seedlings of each treatment. Statistical analysis. The experiment was considered to be a randomized block design. Data were analyzed using analysis of variance according to the general linear model procedure by SAS

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decomposed hardwood bark/wood chips was used to mulch the shade cloth site. No soil amendments, fertilizer, or chemical controls were added to any test sites. Site information. The original native population where propagule material was collected

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analysis of variance ( F test) and regression analyses. The treatments means were compared using the Tukey HSD at P = 0.05. Results and Discussion Even when 75% of peat in a peat–perlite medium was replaced by CGC, plant height, leaf number, and

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YSI (YSI, Yellow Springs, OH) Model 32 conductance meter ( Willard et al., 1968 ). Plant tissue samples for nutrient analyses were ground to pass a 2-mm screen and decomposed using the dry ashing method ( Jones and Steyn, 1973 ). The concentration of

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most common base medium for soilless substrates; peatmoss has great physical and chemical buffering properties for soilless substrates due to its high cation-exchange and water-holding capacities, good aeration, and resistance to decomposition ( Fonteno

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reserve substances, accumulation of toxins, decomposition and inactivation of enzyme complexes, and autoxidation of lipids ( Stanwood, 1985 ), thereby avoiding the risk of genetic and epigenetic changes ( Bonner, 1990 ). Thus, seed cryobanks are promising

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