Rice (Oryza sativa) response to clomazone

Weed Science ◽  
1998 ◽  
Vol 46 (3) ◽  
pp. 374-380 ◽  
Author(s):  
David L. Jordan ◽  
Patrick K. Bollich ◽  
Ann B. Burns ◽  
Douglas M. Walker
Keyword(s):  
Oryza Sativa ◽  
Grain Yield ◽  
Field Experiments ◽  
Clay Soil ◽  
Clay Soils ◽  
Silty Clay ◽  
Silt Loam ◽  
Loam Soil ◽  
Silty Clay Soil ◽  
Additional Field

Experiments were conducted in 1993 and 1994 to determine if seed treated with disulfoton at 3, 6, or 12 g ai kg−1 reduced bleaching of rice foliage caused by clomazone applied delayed preemergence at 0.56, 1.1, 1.7, or 2.2 kg ai ha−1 on silt loam and silty clay soils. Clomazone injured rice more on silt loam soil than on silty clay soil. Disulfoton reduced bleaching caused by clomazone. In additional field experiments conducted during 1995 and 1996, clomazone at rates as high as 2.2 kg ha−1 did not affect grain yield in seven of 10 experiments. Clomazone at rates below 1.7 kg ha−1 did not reduce grain yield in any of the experiments.

Protecting Cotton (Gossypium hirsutum) from Fluometuron Injury with Seed Protectants

Weed Science ◽  
1991 ◽  
Vol 39 (3) ◽  
pp. 408-411 ◽  
Author(s):  
Billy R. Corbin ◽  
Robert E. Frans
Keyword(s):  
Growth Regulators ◽  
Field Experiments ◽  
Clay Soil ◽  
Yield Reduction ◽  
Silty Clay ◽  
Silt Loam ◽  
Chlormequat Chloride ◽  
Mepiquat Chloride ◽  
Loam Soil ◽  
Silty Clay Soil

Field experiments were conducted in 1986 and 1987 to evaluate the potential of growth regulators mepiquat chloride and chlormequat chloride as seed treatments to protect cotton from fluometuron injury. Fluometuron at two and three times the recommended use rate reduced cotton stand and height on Taloka and Convent silt loam soils both years. Cotton grown on a Sharkey silty clay soil was not injured by fluometuron. Mepiquat chloride and chlormequat chloride increased cotton stands on a Taloka silt loam soil when averaged over rates and years. In general, fluometuron injury to cotton was not reduced by treating seed with 1000 ppmw concentrations of chlormequat chloride or mepiquat chloride. Chlormequat chloride reduced chlorosis and necrosis of cotton treated with fluometuron, but neither growth regulator eliminated cotton injury or yield reduction caused by fluometuron at two or three times the recommended rates.

Influence of Application Variables on Efficacy of Postemergence Applications of DPX-PE350

1993 ◽  
Vol 7 (3) ◽  
pp. 619-624 ◽  
Author(s):  
David L. Jordan ◽  
Robert E. Frans ◽  
Marilyn R. McClelland
Keyword(s):  
Nonionic Surfactant ◽  
Weed Control ◽  
Clay Soil ◽  
Silty Clay ◽  
Silt Loam ◽  
Silt Loam Soil ◽  
Loam Soil ◽  
Spray Volume ◽  
And Control ◽  
Silty Clay Soil

Experiments were conducted to compare control of entireleaf morningglory with POST applications of DPX-PE350 applied with no adjuvant, a nonionic surfactant, or crop oil concentrate in spray volumes of 94, 235, and 375 L ha−1. Control was greater with a nonionic surfactant or crop oil concentrate than with no adjuvant and control with crop oil concentrate exceeded control with the nonionic surfactant. Spray volume had no effect on efficacy. DPX-PE350 was more effective when applied to foliage only or to soil plus foliage than when applied to soil only after emergence of entireleaf morningglory. Control from soil-only applications was lower on a silty clay soil than on a silt loam soil. Except for sicklepod, mixing DPX-PE350 with fluometuron or MSMA had little effect on weed control.

Trace element uptake by two British Columbia forages as affected by poultry manure application

1991 ◽  
Vol 71 (3) ◽  
pp. 305-312 ◽  
Author(s):  
A. A. Bomke ◽  
L. E. Lowe
Keyword(s):  
Dry Matter ◽  
Field Experiments ◽  
Clay Soil ◽  
Poultry Manure ◽  
Yield Response ◽  
Silty Clay ◽  
Manure Application ◽  
Deep Pit ◽  
Loam Soil ◽  
Trace Element Uptake

Field experiments evaluated yield response to deep-pit poultry manure application to barley on a clay soil near Prince George and a grass-legume forage on a silty clay loam soil near Chilliwack, B.C. Substantial dry matter yield increases were measured at manure applications up to 20 t ha−1. Subsamples of both crops and the poultry manure were analyzed for Cu, Zn, Mn, Ba, Pb, Ni, Cr, Cd, B and Co. Selenium analyses were made on selected crop samples. There were no indications of toxicity problems even at 40 t ha−1, the highest application. Copper and Zn concentrations in forages were increased by the poultry manure and the Mn/Cu ratio tended to decrease with manure application. Key words: Orchardgrass, ladino clover, barley, micronutrients

Rice (Oryza sativa) Response to Soil Residues of Selected Herbicides

1997 ◽  
Vol 11 (2) ◽  
pp. 379-383 ◽  
Author(s):  
David L. Jordan ◽  
Daniel B. Reynolds ◽  
Stephen H. Crawford
Keyword(s):  
Oryza Sativa ◽  
Grain Yield ◽  
Amine Salt ◽  
Yield Reduction ◽  
Rice Grain ◽  
Silty Clay ◽  
Silt Loam

The potential of alachlor, SAN 582H (Proposed name, dimethenamid), chlorimuron plus metribuzin, clomazone, imazaquin, imazethapyr, metolachlor, sulfentrazone, and trifluralin plus flumetsulam to injure rice the year following application to soybean was evaluated on silty clay and silt loam soils in Louisiana. These herbicides did not cause rice injury or yield reduction. Rice tolerance of the amine salt of 2,4-D or thifensulfuron plus tribenuron applied 0, 7, 14, and 28 d prior to planting was also evaluated on these soils. The amine salt of 2,4-D at 1.1 kg ai/ha injured rice 43 and 52% on silty clay and silt loam soils, respectively, in 1994 when applied the day of planting. In 1995, injury was 78 and 88% on these respective soils at this timing. When applied 7 d or more before planting, 2,4-D amine injured rice in one of four trials. Thifensulfuron plus tribenuron (17 + 9 g ai/ha) injured rice in one of four trials when applied the day of planting, but did not injure rice when applied 7 d before planting. No visual rice injury was observed when 2,4-D amine or thifensulfuron plus tribenuron was applied 14 or 28 d before planting. Rice grain yield was not affected by thifensulfuron plus tribenuron regardless of the interval between application and rice planting. In contrast, rice grain yield was reduced in all trials when 2,4-D amine was applied on the day of planting, and in one of four trials when applied 7 or 14 d before planting.

Dissipation of Fluometuron and Trifluralin Residues After Long-term Use

Weed Science ◽  
1994 ◽  
Vol 42 (3) ◽  
pp. 438-445 ◽  
Author(s):  
Billy R. Corbin ◽  
Marilyn McClelland ◽  
Robert E. Frans ◽  
Ronald E. Talbert ◽  
Diana Horton
Keyword(s):  
Silty Clay ◽  
Silt Loam ◽  
Seed Cotton ◽  
Silt Loam Soil ◽  
Loam Soil ◽  
Herbicide Use ◽  
Continuous Use ◽  
Silty Clay Soil ◽  
Herbicide Programs

Existing long-term cotton experiments established in 1976 with minimum and intensive herbicide programs were subdivided in 1985 and 1986 to determine the longevity of fluometuron and trifluralin soil residues after discontinuing herbicide application. In monoculture cotton, seed cotton yield increased when herbicide use was discontinued in 1985 and 1986 after 9 and 10 yr of continuous use, respectively, on a Sharkey silty clay and a Dundee silt loam soil. Yield increases coincided with reductions of fluometuron and trifluralin soil residues. Fluometuron dissipated from the Dundee silt loam soil by 10 mo after the last application but was present in the Sharkey silty clay soil at 0.20 ppmw after 28 mo. Trifluralin did not totally dissipate from either soil, and low levels were present in the Dundee (0.05 ppmw) and Sharkey (0.13 ppmw) soils 30 mo after the last application. Visual injury to fall-seeded wheat and vetch decreased as herbicide residues dissipated. Fall tillage had no significant effect on the rate of fluometuron or trifluralin dissipation from either soil but reduced seed cotton yields.

scholarly journals Sowing of spring cereals in broad bands and the effect of sowing rate, rolling and irrigation on the results

1972 ◽  
Vol 44 (3) ◽  
pp. 127-137
Author(s):  
Paavo Elonen ◽  
Osmo Kara ◽  
Leo Autio
Keyword(s):  
Field Experiments ◽  
Clay Soil ◽  
Sprinkler Irrigation ◽  
Large Field ◽  
Silty Clay ◽  
Seeding Rate ◽  
Grain Yields ◽  
Spring Cereals ◽  
Band Method ◽  
Silty Clay Soil

In 1971 two large field experiments, one for spring wheat and the other for barley, were carried out on silty clay soil in southern Finland. Three sowing methods were compared at three sowing rate levels (wheat: 140, 275 or 400 kg/ha, barley: 100, 200 or 300 kg/ha), at two levels of rolling (not rolled or rolled by a Cambridge-roller, 330 kg/m), and at two levels of irrigation (not irrigated or irrigated twice in June, 30 mm at both times). Wheat produced 9 ± 2 % higher grain yields sown with a 12.5 cm spacing between coulters in 7 cm bands than in rows of 2 cm. The increases in yield were almost equal irrespective of the seeding rate, rolling or irrigation. The sowing methods had no noteworthy influence on the ripening or the weight of the wheat grains. Barley responded to the sowing methods to a lesser extent than did wheat. Bands 7 cm wide with 12.5 cm spacing resulted in 5 ± 2 % higher wheat yields and 2 ± 1 % higher barley yields than did bands 10 cm wide with 25 cm spacing. The results indicate that the band method with relatively small spacings between the bands is worth further and more detailed study. An increase in the seeding rate from low to »normal» increased the yields, speeded up ripening and decreased the weight of grains, but when normal seeding rates were exceeded the grain yields were not further improved. Rolling speeded up ripening but did not significantly increase the grain yields. Of the factors included in the study, the sprinkler irrigation affected the yields most by increasing the grain yields of wheat by 23 ± 22 % and those of barley by 29 ± 9 %.

The effect of tillage and KCl addition on pH, conductance, NO3-N, P, K and Cl distribution in the soil profile

1994 ◽  
Vol 74 (3) ◽  
pp. 307-314 ◽  
Author(s):  
C. A. Grant ◽  
L. D. Bailey
Keyword(s):  
Soil Profile ◽  
Clay Soil ◽  
Sandy Loam ◽  
Sandy Loam Soil ◽  
Silty Clay ◽  
Zero Tillage ◽  
Tillage Systems ◽  
Fine Sandy Loam ◽  
Loam Soil ◽  
Silty Clay Soil

Distribution of NO3, P, K, Cl, pH and conductance through the soil profile were measured on two soil types after 4 yr of crop production using zero tillage (ZT) or conventional tillage (CT), with or without addition of KCl. All plots received N and P fertilizer each year as banded applications. Surface concentrations of NO3-N were higher under ZT than CT, particularly on the fine sandy loam soil. Accumulation of NO3-N also occurred in the 60- to 120-cm zone, under both tillage systems in both soils. Carryover of NO3-N was substantially greater on the silty clay than the fine sandy loam soil. Phosphate accumulated at the depth of band application in both soils under both tillage systems. Potassium concentration was generally higher under ZT than CT in the surface 15 cm of both soils, presumably due to surface retention of K from fertilizer applications and crop residues. Chloride was higher under ZT than CT in the surface 5 cm of both soils, but was higher under CT than ZT in the 30- to 60-cm and 60- to 120-cm depths in the silty clay soil, if KCl had been applied. The pH on both soils under both tillage systems was reduced in the 10- to 12.5-cm soil depth, corresponding to the zone of fertilizer application. On the silty clay soil, pH was higher under ZT than CT in the 10- to 15-cm depth and tended to be higher under ZT than CT at all depths below 15 cm. Conductance was not influenced by tillage in either soil. Application of KCl increased K and Cl concentrations in the surface 15 cm on both soils. Concentration of Cl was increased to 120 cm in both soils, indicating the mobility and leaching potential of this anion. Conductance and pH were increased in the 2.5- to 5.0-cm and 10- to 12.5-cm depths by KCl application in the fine sandy loam soil, but on the silty clay soil, only conductance was increased. Key words: Zero tillage, nutrient stratification, pH stratification

Semiempirical correlation between thermal conductivity and electrical resistivity for silt and silty clay soils

Geophysics ◽  
2019 ◽  
Vol 84 (3) ◽  
pp. MR99-MR105 ◽  
Author(s):  
Qiang Sun ◽  
Chao Lü
Keyword(s):  
Thermal Conductivity ◽  
Electrical Resistivity ◽  
Water Content ◽  
Clay Soil ◽  
Clay Soils ◽  
Theoretical Equation ◽  
Physical Parameters ◽  
Silty Clay ◽  
Silty Clay Soil ◽  
Gravimetric Water Content

Previous researchers have shown that thermal conductivity and electrical resistivity are related to the water content and void ratio of soil. The objective of this study is to present a theoretical relationship between these two physical parameters. A de Vries equation and Archie’s law are applied to develop a new theoretical equation that relates thermal conductivity to the electrical resistivity of soil. The DRE-2C thermal conductivity tester, which uses a transient plane-source method, is used to measure the thermal conductivity. In addition, the DDC-8 resistivity meter is used to measure the electrical resistivity. Experiments on the thermal conductivity and electrical resistivity of silt soil and silty clay soil with different gravimetric water contents and densities are performed. The results indicate that the theoretical equation can well explain the relationship between the thermal conductivity and electrical resistivity of silt and silty clay soils. The thermal conductivity and electrical resistivity are also found to have a linear relationship with the density of silt soil. When the gravimetric water content is less than 30%, the thermal conductivity and electrical resistivity of silty clay soil increase linearly with the density. The thermal conductivity increases with the gravimetric water content to a critical threshold depending on the soil type. The silty clay samples with a water content of 20% have the largest value of thermal conductivity. The electrical resistivity of the silt and silty clay samples decreases rapidly due to the increased pore connectivity and enhanced hydration of ions in soil with the increased water content. The results of the experiments indicate that the new theoretical equation is effective for estimating the soil electrical resistivity from the soil thermal conductivity.

RESPONSE OF RED CLOVER TO KIMBERLEY ELECTRIC FURNACE IRON SL4G AND OTHER LIMING MATERIALS

1968 ◽  
Vol 48 (5) ◽  
pp. 455-466 ◽  
Author(s):  
J. D. Beaton ◽  
R. C. Speer ◽  
J. T. Harapiak
Keyword(s):  
Electric Furnace ◽  
Clay Soil ◽  
Red Clover ◽  
Magnesium Carbonate ◽  
Silty Clay ◽  
Silt Loam ◽  
Iron Slag ◽  
Ca Uptake ◽  
Silty Clay Soil ◽  
Better Than

Yields, together with K, Ca and Mg concentrations and uptake, were determined for 10 consecutive harvests of red clover in growth-chamber experiments comparing electric furnace iron slag with commercially available agricultural lime, marl and dolomite, as well as reagent-grade magnesium carbonate, as liming materials at two rates of application on the acid Alouette silt loam and Pitt silty clay soils.On the Alouette silt loam, slag was the most effective treatment in increasing yield, while on the Pitt silty clay soil, slag was not significantly better than dolomite, marl or agricultural lime. Magnesium carbonate was the least effective liming treatment in increasing yield on both soils.All liming agents except magnesium carbonate increased Ca uptake. With the exception of dolomite on the Pitt soil and magnesium carbonate on both soils, Ca concentration in red clover tissue was increased by the liming materials.Content of Mg in red clover tissue was increased by slag, dolomite and magnesium carbonate on the Alouette soil and by the latter two sources on Pitt soil. Marl reduced Mg concentration in red clover harvested from Alouette soil, and both agricultural lime and marl decreased Mg in tissue from the Pitt soil. On the Alouette soil, all liming materials except marl and agricultural lime resulted in significant increases in uptake of Mg, while all liming treatments increased Mg uptake from the Pitt soil.Concentration of K in red clover was reduced by liming, whereas K uptake was increased by all liming agents.

Aminopyralid Soil Residues Affect Crop Rotation in North Dakota Soils

2011 ◽  
Vol 25 (3) ◽  
pp. 422-429 ◽  
Author(s):  
Jonathan R. Mikkelson ◽  
Rodney G. Lym
Keyword(s):  
Field Experiments ◽  
Clay Soil ◽  
Yield Reduction ◽  
Silty Clay ◽  
Soybean Yield ◽  
Growing Seasons ◽  
Soil Activity ◽  
Soil Residue ◽  
Silty Clay Soil

Field experiments were established near Casselton and Fargo, ND, to evaluate the effect of aminopyralid soil residue on alfalfa, corn, soybean, and sunflower planted one or two growing seasons after treatment. At Fargo, ND, aminopyralid caused no injury or yield reduction to alfalfa, corn, and sunflower seeded 20 or 23 mo after treatment (MAT) in a silty clay soil. However, soybean yield was reduced when aminopyralid at 120 or 240 g ae ha−1was fall- or spring-applied 20 or 23 mo before seeding. At Casselton, ND, aminopyralid injured alfalfa, soybean, and sunflower planted 8 and 11 MAT. Injury and yield reduction were less from treatments spring-applied than from those that were fall-applied. For example, aminopyralid at 120 g ha−1applied in September caused 95, 94, and 100% injury to alfalfa, sunflower, and soybean, respectively, 8 MAT, whereas the same treatment applied in June caused 10, 8, and 44% injury 11 MAT. Aminopyralid at 120 g ha−1continued to reduce soybean yield by an average of 45% at 20 MAT (fall-applied), but yield was similar to the control when aminopyralid was applied 23 mo before seeding (spring-applied). Warm soil with moderate moisture during the summer months appeared to be very important for degradation of aminopyralid. Corn was not affected by aminopyralid when seeded 8 or 11 MAT and appeared to be the best cropping option for land recently treated with aminopyralid. Aminopyralid applied at spot-treatment rates of 240 g ha−1had long-term soil activity similar to picloram at 560 g ha−1.

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