Where results make sense

About us   |   Why use us?   |   Reviews   |   PR   |   Contact us

MO Ag Experiment Station - Greenley Research Center Claypan soils are often wet and cold in the spring which reduces crop stands, encourages disease, delays planting dates, and results in sub-optimal planting conditions. Subsurface drainage is uncommon in claypan soils because of the soil properties affecting internal drainage. The objectives of this research were to determine: 1) the suitability of claypan soils for subsurface drainage using precision farming technology, 2) crop variability and productivity of subsurface drained compared with non-drained claypan soils, and 3) the economic benefit of claypan soils with drainage compared to soils without drainage. aes.missouri.edu /greenley/research/sitspec01.stm   (1719 words)

MO Ag Experiment Station - Claypan Research Farmh   (Site not responding. Last check: 2007-10-10) As such, they are an integral part of the Missouri Agricultural Experiment Station and unique contributors to MU's comprehensive land-grant responsibility. The Midwest Claypan Research Farm (McCredie Farm) serves University and USDA Agricultural Research Service scientists. This 291-acre farm is the site of soil erosion plots that have supplied 40 years of data on erosion and water runoff under various tillage practices and systems. aes.missouri.edu /claypan/index.stm   (108 words)

Cuddie Springs: Archaeology, Univ. of Sydney Stone tools and bones of extinct animals, found together, in the deposits of the Cuddie Springs claypan is now viewed as the only secure evidence in Australia for interaction between humans and megafauna. Investigations reveal a stratified deposit of human occupation and fossil megafauna, suggesting a temporal overlap and an active association of megafauna with people in the lead up to the last Glacial Maximum, when conditions were more arid than the present day. After drying of the lake, human occupation of the claypan followed but with a broadening of the resource base to include a range of plant foods. acl.arts.usyd.edu.au /research/cuddie/cuddie.html   (1745 words)

VP Report-Solano The Solano-Colusa Vernal Pool Region is a relatively large area covering the majority of Solano County and ranging northward from the low lying plains adjacent to the Suisun Marsh and the Sacramento-San Joaquin Delta through the Colusa Basin of western Sacramento Valley to the vicinity of Princeton, Glenn County (Fig 9). Inundation periods and moisture periods are of longer duration on the claypan pools than the hardpan pools. Virtually all of the remaining of the claypan pools and transitions to alkali marsh in the northern portion of the region are managed for their ephemeral wetland value at Sacramento, Delevan and Colusa National Wildlife Refuges (approx. www.dfg.ca.gov /whdab/wetlands/vp_asses_rept/solano.htm   (795 words)

VP Report-San Joaquin Region Northern Claypan is the primary pool type known from the region. Northern Claypan pools are scattered throughout the region in the lower elevations of the main San Joaquin Valley. Additional reserves are necessary for protection Northern Claypan pools particularly in the northern and central portions of the region. www.dfg.ca.gov /whdab/wetlands/vp_asses_rept/san_joaquin.htm   (469 words)

Preferential flow and transport of nitrate and bromide in claypan soil. : An article from: Ground Water Top 10 ... Preferential flow and transport of nitrate and bromide in claypan soil. Findings revealed that the areal dispersion of preferential flowpaths ranged from 2% to 20% in the topsoil and that gravity lysimeter flow resulting from claypan preferential flow was 150 times higher than the computed average rate of vertical recharge. The concentrations of nitrate in nitrogen in ground water suggest that huge amounts of nitrates from fertilizer reached ground water via the claypan during the first recharge event after fertilizer was used. www.medicum.net /online/Preferential_flow_and_transport_of_nitrate_and_bromide_in_claypan_soil.__An_article_from_Ground_Water/B0009873J4.html   (243 words)

Australia's Lost Kingdoms - Pleistocene period - About Cuddie Springs Cuddie Springs is an ancient lake bed in the semi-arid zone of central northern New South Wales. The fossils are found in a claypan in the centre of the lake floor. The fossil bones of Megafauna were first discovered in the late 1870s when a well was sunk in the centre of the claypan. www.lostkingdoms.com /snapshots/pleistocene_cuddie_springs.htm   (357 words)

4 Flora & Fauna - Lakes In this undulating land with broad valleys and low, gently sloping hills, we have some claypans and just outside our property also salt-lakes were the water birds breed, and some water plant grow. If the rain is good the claypans may be one metre deep in the deepest part. This aquatic plant is common in the water of the claypan. www.pallottine.org.au /tardun_lakes_4.htm   (553 words)

Missouri Management System Evaluation Areas, Waterfax 226-C The project is associated with claypan soils, which occur throughout much of the southern Corn Belt. Claypan soils have a high clay horizon located 6 to 9 inches below the soil surface that limits infiltration and crop root growth. The goal is to evaluate the effect of prevailing farming systems on the quality of surface and groundwater, and to develop alternative farming systems and practices that maintain and improve the quality of water. www.nal.usda.gov /wqic/wgwq/mo.html   (1071 words)

Integrated Pest & Crop Management Newsletter - University of Missouri   (Site not responding. Last check: 2007-10-10) Atrazine and alachlor runoff losses on claypan soils are significantly higher when herbicides are surface applied and not incorporated than when surface applied and incorporated. The percentage of herbicide lost also depends on the intensity and duration of rainfall events, the time between herbicide application and rain, the concentration of the herbicide in the upper half inch of soil, soil type, and the slope of treated fields. The increased surface runoff associated with no-till systems in claypan soils, presents an additional challenge to farmers in atrazine-sensitive areas. ipm.missouri.edu /ipcm/archives/v7n4/ipmltr1.htm   (1059 words)

Claypan :: Kirsten Mackenzie :: OzTrax   (Site not responding. Last check: 2007-10-10) Claypan was inspired by a camping trip Kirsten made to an area south of Alice Springs. She stayed in a claypan in the middle of nowhere, and although isolated, Kirsten did not feel lonely in the beautiful surroundings. Saltwater is Kirsten's debut solo album and was co-produced with Mullumbimby producer Steve Berry. www.abc.net.au /oztrax/stories/s1494276.htm   (129 words)

Page 1 of the N.S.W. Photo Album Claypans, Mudflats, sand dunes and salt lakes are a common occurrence in the arid/semi arid areas of Australia. The claypans generally form between two sand dunes and are a result of the rapid evaporation of floodwaters. This part of New South Wales is known for its vast sky, unobscured by hill or tree and providing a spectacle at sunrise and sunset. www.geocities.com /austfoto/nsw/01.htm   (432 words)

mseabibliography   (Site not responding. Last check: 2007-10-10) Contribution of fertilizer to nitrate in surface and ground water in claypan soils and glacial till. Variable-rate nitrogen Fertilizer corn response on Missouri claypan and alluvial soils. Blanchard, P.E. Herbicides in runoff from claypan soils. www.fse.missouri.edu /ASEQ/msea_publications.htm   (8098 words)

Hardpan? Tough luck   (Site not responding. Last check: 2007-10-10) Claypan may form naturally or be hastened by surface compaction. Claypan or compaction-pan will soften, but hardpan stays hard like a brick. Claypan is easier to break apart than hardpan, but is prone to reforming (sometimes in only a couple of years). www.reddingemployment.com /newsarchive/20010520cuhg007.shtml   (1017 words)

Weed Removal Timings in No-Till, Double-Crop, Glyphosate-Resistant Soybean Grown on Claypan Soils This research indicates that the optimal weed removal timings in no-till, double-crop, glyphosate-resistant soybeans grown on claypan soils were the 8- to 12-inch application timings. In conclusion, optimal treatments for removing weeds in no-till, double-crop, glyphosate-resistant soybeans grown on claypan soils were broad, and can range from 8- to 12-inch weeds, compared to recommendations in full-season soybeans that typically occur with applications to 4- to 8-inch tall weeds (16). This is probably due to the lack of late emerging weeds associated with the later application timings of double-crop soybean, and agrees with previous research which indicated that postemergence glyphosate applications in double-crop no-till soybean could be made over a longer application window (15). www.plantmanagementnetwork.org /pub/cm/research/2003/weed   (2183 words)

ARS | Publication request: Landscape Models of Claypan Soil Profile Properties As a Function of Divergence from ... This study was conducted to develop predictive models of soil properties in claypan soil landscapes based on the depth of the profile-maximum clay content. Continuous three-dimensional representations of claypan soil landscapes suitable for crop and hydrology modeling were developed. The DCMD profiles of soil properties were useful for differentiating between surface alterations of soil properties and their genetic properties. www.ars.usda.gov /research/publications/publications.htm?SEQ_NO_115=180662   (411 words)

5 Flora & Fauna - Lakes One of the first to arrive at the claypan when it starts to fill are the Black-winged stilts. In July, if there is enough water in the claypans, you can see a nest made by the Hoary-headed grebe it is made out of the local vegetation. You can hear them at night around the claypan and other places were water is standing for a while. www.pallottine.org.au /tardun_lakes_5.htm   (455 words)

Evaluation of Variable Rate Technology as a Management Tool for Potassium Based upon the initial soil tests for K and soil topography/soil depth variations within each field, 10 grid cells (called squares) were identified at Jefferson County (Figure 1) and nine cells were identified at Pope County (Figure 2) for intensive variable K rate evaluations in 1997. The Pope County field (Figure 2) is steeply sloping on the north and south ends (five to ten percent) with gentler slopes through the mid portions. The largest yield increase with added K was observed in squares 69 and 70 which had the greatest topsoil depth to claypan and to the fragipan. frec.cropsci.uiuc.edu /1998/report11   (2139 words)

Jackson completes successful Claypan Dam program   (Site not responding. Last check: 2007-10-10) Jackson Gold Ltd says that significant results have been received from a 15 hole, 1180m RC and diamond-drilling program completed at the Claypan Dam project. The highlight of the drilling results is the discovery of extensive mineralisation at a new prospect located 800m west of the existing Crossroads resource on the Kanowna Shear. No part of this material may be reproduced, translated, transmitted, framed or stored in a retrieval system for public or private use without the written permission of the publisher. www.ferret.com.au /articles/CE/0C00F0CE.asp   (224 words)

SCSB#395: MLRA 87 MLRA 87 is located in east central Texas and composes the area known as the Texas Claypan Area. The dominant light-colored loamy and sandy soils of the Texas Claypan Area formed under native savannah vegetation of oak trees and mid and tall grasses. The landuse of MLRA 87 is mostly forests and mixed landuses with forests and cropland and/or range accounting for over 90% of the land area. soilphysics.okstate.edu /S257/book/mlra87   (833 words)

Energy Citations Database (ECD) - Energy and Energy-Related Bibliographic Citations The temporal and spatial patterns of NO{sub 3}-N were studied on a 35-ha field located in the claypan soil region of north-central Missouri. Soil samples were collected from the 0- to 5-, 5- to 10-, and 10- to 15-cm depths and were analyzed for NO{sub 3}-N concentrations. The effects of topography, depth to claypan, soil pH, organic matter (OM) content, cation exchange capacity (CEC), and soil water content on the spatial distribution of NO{sub 3}-N concentration were also evaluated. www.osti.gov /energycitations/product.biblio.jsp?osti_id=678078   (278 words)

Reclamation of Scalded Claypan Using Pondage Banks Demonstration Site - AFFA   (Site not responding. Last check: 2007-10-10) Demonstrate degradation from scalded claypans and create awareness of the problem. This role of grazing animal management in land degradation is being investigated in a prior NSCP project. The present submission is based on the need to demonstrate methods of scalded claypan reclamation and is seen as a necessary follow-on from our prior project The Role of Land Type and Grazing Management in Land Degradation. www.affa.gov.au /docs/nrm/landcare/pub/guide/database/db930393.html   (205 words)

Soybean Irrigation on Claypan Soils   (Site not responding. Last check: 2007-10-10) Our original proposal indicated part of the grant might be used for development of a well for irrigation of soybeans in Mason County. No land area is yet available for such research, so our decision is to use the total grant to complete the water resource development for irrigation on claypan soils. Installation of irrigation and drainage systems for the new soybean plots was completed in July 1980, and irrigation of soybeans began August 1. www.ag.uiuc.edu /~stratsoy/ispob_db/lor_html/9.html   (355 words)

ARS | Publication request: Soil Quality of Claypan Soils Assessed Using Sensor Based Soil Ec and Terrain Attributes Our objectives with this research were to (1)identify whether sensor-based soil EC and terrain attribute information can be used to predict soil quality on claypan soils and (2) evaluate spatial characteristics of soil quality indicators for claypan soils. In June 2002, 255 soil samples were collected on a 10 to 30 m grid spacing within a 5.5 ha claypan soil field. Geostatistical analysis was used to identify the spatial characteristics of soil quality indicators for claypan soils. www.ars.usda.gov /research/publications/publications.htm?SEQ_NO_115=140987   (275 words)

Boney: Boney and the claypan mystery - TV.com We don't have notes for Boney and the claypan mystery. We don't have trivia for Boney and the claypan mystery. We don't have quotes for Boney and the claypan mystery. tv.com /boney/boney-and-the-claypan-mystery/episode/277962/summary.html   (188 words)

Evaluation of Variable Rate Technology as a Management Tool for Potassium Fertilization of Grain Crops Soil sites within each field (called grid cells) with a wide range in depth to the claypan will be used as sites for crop response studies to increasing rates of K application. Seven of the nine grid cells were nonsignificant in their yield response to added K (Table 4). The remaining two cells expressed a positive linear response to applied K. Of particular note was the fact that the two responding cells to K were also the two cells that had the greatest rooting depth to claypan and fragipan layers. frec.cropsci.uiuc.edu /2000/report8   (2186 words)

MUNGILLI CLAYPAN 2   (Site not responding. Last check: 2007-10-10) Mungilli Claypan is off the Gunbarrel Highway, only a couple of days from Ayers Rock, heading west. At this point there is still a few days to go to reach Carnegie Station, more-or-less the end of the Gunbarrel Highway, on the western side. The fallen branches seemed to be semi-porous, almost hollow, as though they were tubular and meant to break easily, and when they did it was with a very loud cracking noise. www.i.net.au /~jonjes/mungilli_claypan.htm   (151 words)

Phosphorus Loss and Runoff Characteristics in Three Adjacent Agricultural Watersheds with Claypan Soils -- Udawatta et ...   (Site not responding. Last check: 2007-10-10) Phosphorus Loss and Runoff Characteristics in Three Adjacent Agricultural Watersheds with Claypan Soils -- Udawatta et al. claypan region of northeastern Missouri were examined from 1991 Copyright © 2004 by the American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America. jeq.scijournals.org /cgi/content/abstract/33/5/1709   (332 words)

Salinity and Sodicity in North Dakota Soils   (Site not responding. Last check: 2007-10-10) This natural layer, often called a claypan, is a barrier to roots. Most roots are restricted to the topsoil above the claypan, because movement of water, nutrients, and gases is too slow in the claypan. The overall effect on plant growth is one of stress similar to that caused by extremely dry or saline conditions. www.ext.nodak.edu /extpubs/plantsci/soilfert/eb57-1.htm   (2730 words)

New and upgraded gold resources at Wallbrook and Claypan Dam projects New and upgraded gold resources have been reported at the Wallbrook and Claypan Dam projects by Jackson Gold. The new gold resource at the Crusader prospect and an increase in the gold resource at the Crossroads prospect have expanded the total company resources by 105,133oz gold. At Claypan Dam, the Crossroads resource totals 0.94mt at 2.41g/t for 72,633oz. www.ferret.com.au /articles/78/0c013878.asp   (168 words)

Soil Conductivity Sensing on Claypan Soils: Comparison of Electromagnetic Induction and Direct Methods   (Site not responding. Last check: 2007-10-10) Soil electrical conductivity (EC) sensing provides a means for rapidly mapping variations in soil properties such as salinity, moisture, and clay content. On claypan soils, EC measurements are related to topsoil depth above the claypan horizon, an important factor in spatial crop productivity differences on these soils. Soil EC data obtained with a noncontact sensor based on electromagnetic induction principles were compared with data from a direct contact, coulter-based sensor. www.fse.missouri.edu /ars/SOIL_C~1.HTM   (186 words)

Try your search on: Qwika (all wikis)

About us   |   Why use us?   |   Reviews   |   Press   |   Contact us   Copyright © 2005-2007 www.factbites.com Usage implies agreement with terms.