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Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 13 of 13 for “"Calcareous Soils"”.
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SUBSURFACE DRIP IRRIGATION AND UREA PHOSPHATE USE IN VEGETABLES ON CALCAREOUS SOILS.
… surface and furrow irrigation were compared on calcareous soils of southern Arizona. Crops grown were zucchini squash (Cucurbita pepo L.) 1982 and 1983 summers, and cabbage (Brassica oleracea var. capitata L.), 1982 fall. Furrows received a preplant application of phosphorus (P) at a rate of 100 …
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Microbial and Chemical Affects on Leachate from Calcareous Soils Treated with Wastewater Effluent
… waters to natural and artificially constructed calcareous soils in greenhouse and field lysimeters, and in soil columns. The leachate from one field lysimeter contained increased fecal coliform counts than the effluent. Leachate coliform counts were decreased or not significantly changed in two …
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Response of Soybean Iron and Manganese Deficiency
… (Glycine max (L.) Merr.) grown on high pH, calcareous soils. Although chemical fertilizers have been used to control yield losses associated with these deficiencies, genetic resistance is more reliable and effective. Identification of resistant cultivars requires an understanding of the …
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Chemical fractionation and solubility of phosphorus in dairy manure-amended soils as a predictor of phosphorus concentration in runoff
… over-loading in many dairy manure-amended soils in the dairy producing areas of Texas has led to environmental problems as such eutrophication of local surface water bodies. One of the nutrients contributing to eutrophication problems is phosphorus (P). This project focused on fractionation …
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Molecular Basis of Calcicole-Calcifuge Physiology.
… position both chemically and functionally. Soils vary widely in their Ca2+ content and therefore, adaptations shown by plants, mainly to this factor, have led to the emergence of two very distinct ecological divisions termed as calcicoles (grow on calcareous soils) and calcifuges (grow on …
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Hydrolysis of formamide and volatilization of ammonia from nitrogen fertilizers added to soils
… recovery (98 to 101%) of formamide added to soils (20 to 200 (mu)g of formamide N/g of soil);The rate of hydrolysis of formamide increased with increasing temperature of incubation and organic C content of the soils. The time necessary for complete hydrolysis of formamide (1000 (mu)g …
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The reproductive biology of Clematis addisonii
… is a Virginia endemic restricted to calcareous soils in a four county region of the Ridge and Valley Province in Virginia. A two year study of the reproductive biology of this species reveals that it is self-compatible, showing no significant reduction in fecundity following …
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The creation of novel methodologies to examine the effects of phosphorus amendments on petroleum hydrocarbon bioremediation
… rapid adsorption and precipitation processes in calcareous soils lower labile soil P concentrations. As the P form impacts bioavailability, we hypothesized that the P amendment form would influence PHC degradation rates. However, soil characteristics, large Pi concentrations and inefficient P …
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Physiological and genetic investigations of iron deficiency in field peas (Pisum sativum L.).
… is especially prevalent in crops grown on calcareous soils which are widely distributed in the southern region of Australia. Although Fe fertilizers have been used to correct the chlorosis and are effective for short term control, cultivation of tolerant cultivars could reduce the damage in …
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Quantitative Trait Locus Analysis of Iron Deficiency Chlorosis in Soybean
… problem with plants grown in high pH calcareous soils. Planting tolerant varieties is the best approach to meet the challenge. Currently, the variety development is limited by lack of genetic resources and knowledge about mechanisms of resistance to IDC. The previous research in the …
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Effects of pCO2 on hydroxyapatite formation and its stability: Implications for understanding phosphorus availability in calcareous soil
Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2025-12-01
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Ecología, caracterización y evaluación agronómica del taxon "Vicia Amphicarpa" Dorthes
… of the physic and chemist characteristics of the soils of the Spanish localities where the populations were gathered, a climate study of such sites and an analysis of the accompanying vegetation. The plant material employed for the morphologic characterization, agronomic evaluation and cytological …