Spelling suggestions: "subject:"soil -- moisture"" "subject:"soil -- amoisture""
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Impact of Irrigation Applications at Soil Moisture Deficits on Plant Development and Yield of Indeterminate and Determinate Soybean VarietiesBrown, Andy J 11 December 2015 (has links)
As the Mississippi River Alluvial Aquifer declines, it is the duty of soybean producers to become more efficient irrigators. Research was established in 2012 and 2013 in the Mississippi Delta to evaluate plant development and yield of an indeterminate soybean variety with irrigation initiated at the R1 producer standard and compared to initiation timings at the R2, R4, and R5 growth stages once a 2” deficit was reached according to the FAO-56 Penman-Monteith model. Research was also conducted to evaluate seeding rates in irrigated and non-irrigated systems in Starkville and Stoneville, MS in 2013 and 2014. These data indicate that delaying irrigation initiation beyond R1 did not adversely affect yield, and in some instances even provided a small yield increase. Irrigation did show consistent yield benefit regardless of initiation timing over a non-irrigated system. No optimum seeding rate in terms of yield or net return was observed across site years.
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Effects of Irrigation Scheduling using Soil Moisture Sensors, Irrigation Termination, and Simulated Damage on Plant Development and Yield on Cotton (Gossypium Hirsutum L.) in the Mid-SouthPlumblee, Michael Thomas 04 May 2018 (has links)
Through proper irrigation scheduling and management of damaged cotton, sustainable agricultural withdrawal from the Mississippi River Valley Alluvial Aquifer can be achieved while maximizing net returns. This research was conducted to 1) develop a sensor based irrigation strategy that maximized cotton lint yield and quality, irrigation, and water use efficiency (IWUE) and 2) quantify the effects of timing of damage, intensity, and foliar N on cotton growth and development. Lint yield, fiber quality, and IWUE were optimized using a season-long irrigation threshold of -90 kPa and irrigation terminated 2-weeks before cracked boll. Regardless of cotton variety (early- or late-maturing) or timing of damage, plant height, number of nodes, and lint yield were negatively correlated with the intensity of damage. Moreover, the application of foliar nitrogen to damaged cotton had no effect on plant growth, lint yield, or fiber quality, regardless of N application timing. These data indicate that lint yield, and fiber quality are optimized when cotton varieties are selected based on yield potential, irrigated at -90 kPa threshold, and irrigations are terminated two weeks before cracked boll.
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The savanna ecosystem : an analysis of plant, soil and water relations in the northern Rupununi savannas of British Guiana as an aid to understanding their nature and originEden, M. J. January 1964 (has links)
Note:
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Physical changes in the soil environment due to vehicle traffic.Havard, Peter L. January 1978 (has links)
No description available.
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Effect of clay type and clay content on moisture content and bulk soil electrical conductivity as measured using time domain reflectometryLiaghat, Abdolmajid January 1993 (has links)
No description available.
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Use of time domain reflectometry to monitor water content and electrical conductivity of saline soilEntus, Jonathan January 2000 (has links)
No description available.
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Soil moisture redistribution modeling with artificial neural networksDavary, Kamran. January 2001 (has links)
No description available.
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The role of moisture and temperature cycles in soil movement on Mont St. Hilaire, Quebec.Gwyn, Q. H. J., 1942- January 1968 (has links)
No description available.
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Soil mottling as an indicator of seasonal high water table in Massachusetts floodplain soils /Chase-Dunn, Corinna 01 January 1991 (has links) (PDF)
No description available.
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Fragipan strength behavior, moisture regimes, and morphology of soils in a drainage-toposequence in Central Massachusetts.Pickering, Edward Wallace 01 January 1983 (has links) (PDF)
No description available.
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