Results 211 to 220 of about 4,286,117 (248)
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Journal of Economic Entomology, 1991
Insecticide-modified levels of western corn root worm, Diabrotfca vtrgifera vtrgifera LeConte, larval feeding, manually applied preautotrophic (seedling stage) defoliation, and auto trophic (four-leaf stage) defoliation were evaluated for their independent and combined effects on aboveground dry matter production and grain yield of field corn, Zea mays
Timothy J. Gibb, Randall A. Giggins
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Insecticide-modified levels of western corn root worm, Diabrotfca vtrgifera vtrgifera LeConte, larval feeding, manually applied preautotrophic (seedling stage) defoliation, and auto trophic (four-leaf stage) defoliation were evaluated for their independent and combined effects on aboveground dry matter production and grain yield of field corn, Zea mays
Timothy J. Gibb, Randall A. Giggins
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Australian Journal of Agricultural Research, 1987
Subterranean clover was exposed to two levels of inoculum of millet seed colonized by Fusarium avenaceum, Fusarium oxysporum, Phoma medicaginis, Phytophthora clandestina, Pythium irregulare, or Rhizoctonia solani within pasteurized and unpasteurized field soil from sites with (root rot site) and without (virgin site) a history of subterranean clover ...
MJ Barbetti, K Sivasithamparam
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Subterranean clover was exposed to two levels of inoculum of millet seed colonized by Fusarium avenaceum, Fusarium oxysporum, Phoma medicaginis, Phytophthora clandestina, Pythium irregulare, or Rhizoctonia solani within pasteurized and unpasteurized field soil from sites with (root rot site) and without (virgin site) a history of subterranean clover ...
MJ Barbetti, K Sivasithamparam
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Forest Science, 1988
Abstract Loblolly pine (Pinus taeda L.) seedlings from a Virginia nursery were lifted once per month between October and February during the 1983 and 1984 lifting seasons and held in cold storage at 2°C for 3, 6, 9, and 12 weeks. Following cold storage, root growth potential (RGP) and root and shoot characteristics were compared to ...
Laura E. DeWald, Peter P. Feret
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Abstract Loblolly pine (Pinus taeda L.) seedlings from a Virginia nursery were lifted once per month between October and February during the 1983 and 1984 lifting seasons and held in cold storage at 2°C for 3, 6, 9, and 12 weeks. Following cold storage, root growth potential (RGP) and root and shoot characteristics were compared to ...
Laura E. DeWald, Peter P. Feret
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Extraction of high-molecular-weight DNA from dry root tissue ofBerberis lycium suitable for RAPD
Plant Molecular Biology Reporter, 2003A simple protocol for DNA isolation from dry roots ofBerberis lycium is described. Four-year-old dry roots are used, and the isolated DNA is suitable for analysis by means of restriction enzyme digestion and random amplification of polymorphic DNA (RAPD).
Anil Kumar, P. Pushpangadan, S. Mehrotra
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Journal of Plant Growth Regulation, 2020
The rising demand for agricultural commodities in developing countries has put increasing pressure on land resources for higher yields, with associated growth in the demand for phosphate fertilizers. However, there are a number of adverse environmental impacts associated with the use of inorganic P fertilizers that is pushing global fertilizer prices ...
Sylvia Morais de Sousa +8 more
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The rising demand for agricultural commodities in developing countries has put increasing pressure on land resources for higher yields, with associated growth in the demand for phosphate fertilizers. However, there are a number of adverse environmental impacts associated with the use of inorganic P fertilizers that is pushing global fertilizer prices ...
Sylvia Morais de Sousa +8 more
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Ozone fumigation decreased the root carbohydrate content and dry weight of green ash seedlings
Environmental Pollution Series A, Ecological and Biological, 1981Abstract Thirty one-year-old green ash seedlings were divided into two groups. The first served as the control whilst the second was fumigated with 0·5 ppm O3 for 8 h a day, 5 days a week. After 2, 4 and 6 weeks, five seedlings in each group were harvested to determine leaf and stem weight and the content of starch, reducing sugar and sucrose in the ...
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Canadian Journal of Botany, 1983
The possible relationship of partitioning of photosynthate between starch and sucrose to the distribution of dry weight between the shoot and root was examined in relation to genetic variation and plant nutritional status. Soybean (Glycine max (L.) Merr.), tobacco (Nicotiana tabacum L.), and red-beet (Beta vulgaris L.) seedlings had low relative root ...
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The possible relationship of partitioning of photosynthate between starch and sucrose to the distribution of dry weight between the shoot and root was examined in relation to genetic variation and plant nutritional status. Soybean (Glycine max (L.) Merr.), tobacco (Nicotiana tabacum L.), and red-beet (Beta vulgaris L.) seedlings had low relative root ...
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Plant and Soil, 2004
Nitrate N is a major inhibitor of the soybean/Bradyrhizobium symbiosis in legumes and although this inhibition has been studied for many years, as yet no consensus has been reached on the specific and quantitative interactions between nitrate and ammonium supply and N-2 fixation. The effect of nitrate and ammonium supply on plant growth, nodulation and
Gan, Y. +3 more
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Nitrate N is a major inhibitor of the soybean/Bradyrhizobium symbiosis in legumes and although this inhibition has been studied for many years, as yet no consensus has been reached on the specific and quantitative interactions between nitrate and ammonium supply and N-2 fixation. The effect of nitrate and ammonium supply on plant growth, nodulation and
Gan, Y. +3 more
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Biologia, 2006
Willows (e.g. Salix caprea L.) are deciduous and richly branched shrubs or small trees. Salix caprea shows a high adaptability to different habitat conditions. One way of evaluating this adaptability is to measure willow biomass and production. Young plants of S.
Jiří Dušek, Jan Květ
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Willows (e.g. Salix caprea L.) are deciduous and richly branched shrubs or small trees. Salix caprea shows a high adaptability to different habitat conditions. One way of evaluating this adaptability is to measure willow biomass and production. Young plants of S.
Jiří Dušek, Jan Květ
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Soil Biology and Biochemistry, 1989
Abstract Wheat and maize root materials showed differences in the magnitude of weight loss from bags with coarse (1 mm) or fine-mesh (3 μm pores) buried in soil. For maize, weight loss differed in these two types of bag at two soil depths (5 and 12.5 cm).
K.P. Singh, Chandra Shekhar
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Abstract Wheat and maize root materials showed differences in the magnitude of weight loss from bags with coarse (1 mm) or fine-mesh (3 μm pores) buried in soil. For maize, weight loss differed in these two types of bag at two soil depths (5 and 12.5 cm).
K.P. Singh, Chandra Shekhar
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