نتایج جستجو برای: soil morphology
تعداد نتایج: 324371 فیلتر نتایج به سال:
Cadmium, a non-essential and toxic metal, negatively affects plant growth and productivity, and alters the plant's physiological processes necessary for its survival. The present study was designed to explore the individual and combined effects of calcium and salicylic acid (SA) on the morphology and physiology of Brassica juncea L. cv. Varuna under cadmium stress. The application of calcium (2...
Carolina bays are shallow depression wetlands found in the southeastern United States that have been severely altered by human activity. The need to restore these complex and diverse systems is well established, but our limited understanding of wetland hydrologic processes in these systems hinders our ability to assess the effectiveness of bay restoration efforts. Carolina bays exhibit a wide r...
Major reforestation programs have been initiated on hillsides prone to erosion and landslides in China, but no framework exists to guide managers in the choice of plant species. We developed such a framework based on the suitability of given plant traits for fixing soil on steep slopes in western Yunnan, China. We examined the utility of 55 native and exotic species with regard to the services ...
1. There is limited understanding of patterns of variation that exist among root traits of different species, especially under field conditions. We contrasted 11 fastand slow-growing species paired within five evolutionary lineages to investigate whether root traits associated with soil resource acquisition were related to species’ potential growth rate. 2. Measurements of root morphology, arch...
The effect of different-colored polyethylene mulches on quantity and spectra of reflected light, plant morphology, and root-knot disease was studied in tomato (Lycopersicon esculentum) grown in simulated planting beds. Tomato plants were inoculated with Meloidogyne incognita at initial populations (Pi) of 0, 1,000, 10,000, or 50,000 eggs/plant, and grown in a greenhouse for 50 days over white, ...
The conditions that cause the development of symptoms of frenching in tobacco {Nicotiana tabacum L.) plants are unknown. Low nitrogen, ^ low acidity, and excessive moisture ^ have at times been held to be contributing factors. Nevertheless soil from fields of severely frenched plants was often incapable of producing this morphological abnormality in the greenhouse. Abnormal plants transplanted ...
In this work, windmill palm fiber (WPF), alkali-treated fiber (AF) without hemicellulose and bleached fiber (BF) without lignin were prepared and buried in soil for 30, 60 and 90 days. The surface morphology, chemical composition, crystallinity degree, mechanical properties, and residual mass rate of the samples, before and after biodegradation, were investigated. According to the results, soil...
One of the indicators land productivity assessment is soil fertility. The causes infertile have been widely reported. This study aimed to evaluate fertility using Soil Fertility Capability Classification (SFCC) approach and determine relationship between morphological physiochemical properties research was conducted in North Galela Sub-district, Halmahera Regency. framework began with interpret...
synthetic water soluble acrylamide-based polymers have wide range of ap-plications in the feld of soil establishment and non-desertifcation. in this research, the acrylamide-based anionic polyelectrolytes were prepared by solution polymerization. the polymerization was carried out using aibn as a radical initiator and at different degrees of anionic charges ranging between 10% and 30...
Field and laboratory analyses of soils on 11 well-dated fluvisil terraces spanning the past 0.5 m.y. demonstrate that a threshold governs changes in several morphological and chemical characteristics of increasingly older soils. Correlations with respect to time among iron species, soil morphology, and soil silt and clay demonstrate that the chronosequence at Cajon Pass reflects primarily an ev...
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