scholarly journals Weed control and grain yield in double-cropped soybean

2008 ◽  
Vol 23 (2) ◽  
pp. 107-114
Author(s):  
Milena Simic ◽  
Nebojsa Momirovic ◽  
Zeljko Dolijanovic ◽  
Zeljko Radosevic
Keyword(s):  
Grain Yield ◽  
Weed Control ◽  
Sandy Loam ◽  
Conventional Tillage ◽  
Row Spacing ◽  
No Tillage ◽  
Correlation Data ◽  
Negative Effect ◽  
Tillage System ◽  
Loam Soil

The effects of different herbicide combinations: control (1), alachlor+linuron (2), and alachlor+linuron+imazethapyr (3) were investigated in double-cropped soybean grown in two row spacing variants, 38 cm and 76 cm, under conventional tillage (CT) or no-tillage (NT). In trials conducted on a sandy loam soil at Zemun Polje, high weediness had a negative effect of on the yield of double-cropped soybean, especially at the higher row spacing tested and with no-tillage. Regression and correlation data revealed a dependence of weediness in double-cropped soybean on tillage system and herbicide combination, and dependence of soybean yield on tillage system.

Effect of Tillage and Application Method on Corn (Zea mays) Response to Imidazolinone Residues in Soil

1998 ◽  
Vol 12 (2) ◽  
pp. 281-285 ◽  
Author(s):  
Karen A. Renner ◽  
Oliver Schabenberger ◽  
James J. Kells
Keyword(s):  
Grain Yield ◽  
Sandy Loam ◽  
Soil Depth ◽  
Field Studies ◽  
No Tillage ◽  
Soil Cores ◽  
Application Method ◽  
Tillage System ◽  
Loam Soil ◽  
Moldboard Plow

Field studies on a sandy loam soil determined the influence of application method and rate and subsequent tillage on corn response to imazaquin and imazethapyr residues remaining in the soil. Imazaquin was applied preplant incorporated (PPI) and preemergence (PRE) at 70, 140, and 280 g ai/ha and postemergence (POST) at 70 and 140 g/ha. Imazethapyr was applied PPI and PRE at 70, 105, and 140 g ai/ha and POST at 70 and 105 g/ha. Subsequent tillage included fall moldboard plowing followed by spring field cultivation, fall chisel plowing followed by spring field cultivation, and no tillage. Herbicide dissipation was determined by analyzing soil cores taken in the spring at the time of corn planting and by measuring corn height and grain yield. Imidazolinone residues were detected in only 1 of 2 yr. Imazaquin was detected more frequently than imazethapyr. Imazaquin concentrations in the upper 10 cm of soil 11 mo after a PPI application of 280 g/ha were 5, 6, and 7 ng/g of soil in moldboard plow, chisel, and no-tillage systems, respectively. Imazaquin (5 ng/g) was also detected in the 10–18-cm soil depth in the moldboard plow system. Corn height and grain yield were not reduced from imazaquin or imazethapyr, regardless of application method or rate in any tillage system.

Effect of the ridge tillage system on some selected soil physical properties in a maize monoculture

2004 ◽  
Vol 52 (3) ◽  
pp. 211-220 ◽  
Author(s):  
P. László ◽  
C. Gyuricza
Keyword(s):  
Bulk Density ◽  
Sandy Loam ◽  
Penetration Resistance ◽  
Soil Bulk Density ◽  
Conventional Tillage ◽  
No Tillage ◽  
Tillage System ◽  
Loam Soil ◽  
Set Up ◽  
Ridge Tillage

Within the framework of cooperation between Szent István University and the Vienna University of Agricultural Sciences, a soil cultivation experiment in a maize (Zea mays L.) monoculture was set up for the first time in Austria near Pyhra (Lower Austria) in 1996. A study was conducted to evaluate the effects of ridge tillage (RT) in comparison with conventional mouldboard ploughing in autumn (CT) and no-tillage (NT) on the penetration resistance (PR), soil bulk density (BD) and porosity (P) of sandy loam soil (Typic Agriudoll). Analyses were made for each treatment and for different parts of the ridge (top and side of the ridge, and interrow) in 1998, 2000 and 2002. The average PR and BD values were greatest in the no-tillage plot, being 3.42 MPa and 1.56 g·cm-3, respectively. After six years, ridge tillage resulted in lower penetration resistance and bulk density values in the upper 20 cm than conventional tillage and no-tillage. Ridge tillage appears capable of reducing compaction in this soil. It can be concluded from the results that ridge tillage is capable of maintaining and improving favourable physical conditions in the soil.

Weed seedbank response to crop rotation and tillage in semiarid agroecosystems

Weed Science ◽  
1999 ◽  
Vol 47 (1) ◽  
pp. 67-73 ◽  
Author(s):  
J. Dorado ◽  
J. P. Del Monte ◽  
C. López-Fando
Keyword(s):  
Weed Control ◽  
Field Experiments ◽  
Conventional Tillage ◽  
Crop Rotations ◽  
Soil Conditions ◽  
No Tillage ◽  
Tillage Systems ◽  
Mouse Ear ◽  
Tillage System ◽  
Number Of Seeds

In a semiarid Mediterranean site in central Spain, field experiments were conducted on a Calcic Haploxeralf (noncalcic brown soil), which had been managed with three crop rotations and two tillage systems (no-tillage and conventional tillage) since 1987. The crop rotations consisted of barley→vetch, barley→sunflower, and a barley monoculture. The study took place in two growing seasons (1992–1994) to assess the effects of management practices on the weed seedbank. During this period, spring weed control was not carried out in winter crops. In the no-tillage system, there was a significant increase in the number of seeds of different weed species: anacyclus, common purslane, corn poppy, knotted hedge-parsley, mouse-ear cress, spring whitlowgrass, tumble pigweed, venus-comb, andVeronica triphyllos.Conversely, the presence of prostrate knotweed and wild radish was highest in plots under conventional tillage. These results suggest large differences in the weed seedbank as a consequence of different soil conditions among tillage systems, but also the necessity of spring weed control when a no-tillage system is used. With regard to crop rotations, the number of seeds of knotted hedge-parsley, mouse-ear cress, and spring whitlowgrass was greater in the plots under the barley→vetch rotation. Common lambsquarters dominated in the plots under the barley→sunflower rotation, whereas venus-comb was the most frequent weed in the barley monoculture. Larger and more diverse weed populations developed in the barley→vetch rotation rather than in the barley→sunflower rotation or the barley monoculture.

scholarly journals Weed infestations of winter wheat depend on the forecrop and the tillage system

2018 ◽  
Vol 71 (3) ◽  
Author(s):  
Dorota Gawęda ◽  
Andrzej Woźniak ◽  
Elżbieta Harasim
Keyword(s):  
Winter Wheat ◽  
Sandy Loam ◽  
Floristic Composition ◽  
Dry Weight ◽  
Conventional Tillage ◽  
Wheat Crop ◽  
No Tillage ◽  
Weed Species ◽  
Tillage System ◽  
Winter Rapeseed

In-crop weed infestation is affected by both habitat conditions and agronomic practices, including the forecrop and tillage treatments used. This study evaluated the effect of the forecrop and the tillage system on species composition, number and dry weight of weeds in a winter wheat ‘Astoria’. A field study was carried out over the period 2014–2017 at the Uhrusk Experimental Farm (SE Poland), on a mixed rendzina soil with a grain-size distribution of sandy loam. Wheat was grown in a four-course crop rotation: soybean – winter wheat – rapeseed – winter wheat. The experimental factors were as follows: a forecrop of winter wheat (soybean and winter rapeseed) and a tillage system (ploughing and no-tillage). <em>Avena fatua</em> was the most frequently occurring weed in the wheat crop sown after soybean, whereas after winter rapeseed it was <em>Viola arvensis</em>. <em>Viola arvensis</em> was the dominant weed under both tillage systems. In all experimental treatments, the species <em>Viola arvensis</em> and <em>Cirsium arvense</em> were characterized by the highest constancy (Constancy Class V and IV), and also <em>Veronica arvensis</em> after the previous winter rapeseed crop. In the wheat crop sown after winter rapeseed, the number of weeds was found to be higher by 62.1% and the weed dry weight higher by 27.3% compared to these parameters after the previous soybean crop. A richer floristic composition of weeds was also observed in the stand after winter rapeseed. Under conventional tillage conditions, compared to no-tillage, the number of weeds was found to be lower by 39.7% and their dry weight by 50.0%. An increase in the numbers of the dominant weed species was also noted in the untilled plots.

Agronomic Performance of Sugarcane in Reduced Row Spacing Grown from Different Billet Sizes Under No-tillage and Conventional Tillage System

Sugar Tech ◽  
2020 ◽  
Vol 22 (3) ◽  
pp. 437-444
Author(s):  
Murilo Fuentes Pelloso ◽  
Matheus Gustavo da Silva ◽  
Arthur Pereira da Silva
Keyword(s):  
Conventional Tillage ◽  
Row Spacing ◽  
Agronomic Performance ◽  
No Tillage ◽  
Tillage System

An Oats (Avena sativa) – Soybean (Glycine max) Rotation Using Ecofarming versus Conventional Tillage

Weed Science ◽  
1985 ◽  
Vol 33 (4) ◽  
pp. 544-550 ◽  
Author(s):  
Russell S. Moomaw
Keyword(s):  
Glycine Max ◽  
Grain Yield ◽  
Weed Control ◽  
Avena Sativa ◽  
Conventional Tillage ◽  
The Other ◽  
Soybean Yield ◽  
No Till ◽  
Crop Injury ◽  
Tillage System

An oats (Avena sativaL.) – no-till soybean [Glycine max(L.) Merr.] ecofarming system was evaluated through four, 2-yr rotations during 1978 through 1982. Herbicides were applied to oats, to oat stubble, and to no-till soybeans for maximum weed control throughout the 2-yr rotation. The treatment sets also included conventional tillage of oat stubble for weed control and preparation of a soybean seedbed. Several herbicides gave effective weed control in oats with minimal crop injury; however, grain yield was not increased by any of the treatments. No recropping problems were encountered when planting no-till soybeans 14 months after application of chlorsulfuron {<2-chloro-N-[[(4-methoxy-6-methyl-1,3,5-triazin-2-yl)amino]carbonyl]benzenesulfonamide)}. Soybean yield under ecofarming was greater 1 yr and equal to that with the conventional-tillage system the other 2 yr.

Soil cultivation, nitrogen fertilization and weeds

2010 ◽  
Vol 59 (1) ◽  
pp. 145-150
Author(s):  
É. Lehoczky ◽  
A. Kismányoky
Keyword(s):  
Sustainable Agriculture ◽  
Weed Control ◽  
Precision Agriculture ◽  
Yield Curve ◽  
Conventional Tillage ◽  
N Fertilizer ◽  
No Tillage ◽  
Soil Cultivation ◽  
Tillage System ◽  
Set Up

The cultivation methods used in the experiments resulted in marked differences in the weediness of maize and wheat. The least weediness was found in the conventional tillage treatment. The crucial question in the conservation and no tillage for sustainable agriculture is the weed problem, especially if the technology of weed controls is unaltered as compare to the traditional one. The lower yield in this cultivation system can be attributed to the competition of weeds. To clarify the question, investigations were carried out in the years 2005–2008 in a long-term field experiment set up on brown forest soil at the University of Pannonia, Georgikon Faculty Keszthely. The lowest yields were obtained in the wheat–maize no-tillage system in comparison to the others. This was valid at high and low levels alike (good and unfavorable years). On the average of years the yield decrease was 10–15% as compared to the traditional cultivation. In the spring survey of the weed cover (%) in the wheat trials it was found that the weed coverage increased parallel with the N fertilizer amounts, and then declined in the treatment above 200 kg N. The relation of weeds v.s. N fertilizer is similar to the second power equation of the yield curve. In case of the maize trials, there were no significant differences between the N treatments (25–30%) regarding weed coverage. The gained results call attention to the fact that with the propagation of the reduced soil cultivation systems it is necessary to modify and harmonize the practice of weed control and fertilization. Instead of the schematic weed control and fertilization process, the application of scientifically well-established methods should be urged. In sustainable agriculture the data collection of weeds, the survey of dominant species, special herbicide combinations and the means of precision agriculture have to be taken into consideration.

Herbicide Programs in No-Tillage and Conventional-Tillage Soybeans (Glycine max) Double Cropped After Wheat (Triticum aestivum)

Weed Science ◽  
1992 ◽  
Vol 40 (2) ◽  
pp. 255-263 ◽  
Author(s):  
Barry D. Sims ◽  
David R. Guethle
Keyword(s):  
Weed Control ◽  
Mississippi River ◽  
Conventional Tillage ◽  
No Tillage ◽  
Weed Species ◽  
Tillage Systems ◽  
Tillage System ◽  
Preemergence Herbicides ◽  
Herbicide Programs ◽  
Large Crabgrass

Postemergence and commonly used preemergence plus postemergence herbicide programs were evaluated for weed control in conventional and no-tillage soybeans double cropped after winter wheat in the northern Mississippi River Delta. Broadleaf weed species present varied with tillage, location, and year. Large crabgrass was present in both tillage systems for all locations and years. Conventional tillage usually resulted in higher densities of large crabgrass, common cocklebur, and smooth pigweed. Soil-applied preemergence herbicides alone did not provide season-long ivyleaf and entireleaf morningglory or common cocklebur control in either tillage system. For weed control and soybean yields comparable to weed-free controls, postemergence broadleaf herbicides were required in both tillage systems following the soil-applied herbicide programs, alachlor plus linuron and alachlor plus metribuzin. Postemergence herbicide programs provided excellent season-long annual grass and broadleaf weed control when sethoxydim was applied separately from the broadleaf herbicides. Antagonism of large crabgrass control resulted when sethoxydim was tank mixed with postemergence broadleaf herbicides, compared to separate applications of the postemergence grass and broadleaf herbicides. In three out of four studies, soybean yields in handweeded controls were similar between tillage systems.

Integration of Weed Management and Tillage Practices in Spring Barley Production

2015 ◽  
Vol 29 (3) ◽  
pp. 367-373 ◽  
Author(s):  
Drew J. Lyon ◽  
Frank L. Young
Keyword(s):  
Winter Wheat ◽  
Grain Yield ◽  
Weed Control ◽  
Weed Management ◽  
Conservation Tillage ◽  
Spring Barley ◽  
Conventional Tillage ◽  
Barley Grain ◽  
Tillage Systems ◽  
Tillage System

Spring barley can be used to diversify and intensify winter wheat-based production systems in the U.S. Pacific Northwest. The objective of this study was to describe the effects of tillage system and weed management level (WML) on weed control and spring barley grain yield when grown in a winter wheat-spring barley-spring dry pea rotation. A long-term integrated pest management field study examined the effects of three WMLs (minimum, moderate, and maximum) and two tillage systems (conservation and conventional) on weed control and barley grain yield. Total weed biomass at harvest was 8.0 and 59.7 g m−2for the maximum and minimum WMLs, respectively, in the conservation tillage system, but was similar and averaged 12.2 g m−2for all three WMLs in the conventional tillage system. Despite greater weed biomass with minimum weed management in the conservation tillage system, barley grain yields averaged 5,060 and 4,780 kg ha−1for the conservation tillage and conventional tillage systems, respectively. The benefits of conservation tillage require adequate herbicide inputs.

scholarly journals Effects of tillage and weed management on the vertical distribution of microclimate and grain yield in a winter wheat field  

2013 ◽  
Vol 59 (No. 5) ◽  
pp. 201-207 ◽  
Author(s):  
H. Han ◽  
T. Ning ◽  
Z. Li
Keyword(s):  
Relative Humidity ◽  
Winter Wheat ◽  
Vertical Distribution ◽  
Grain Yield ◽  
Weed Control ◽  
Air Temperature ◽  
Conventional Tillage ◽  
No Tillage ◽  
Growing Seasons ◽  
The Vertical Distribution

This paper presents results of a field study of the influence of tillage and weed on the vertical distribution of microclimate in the upper, middle, and deeper layers of a winter wheat population and grain yield during the 2008&ndash;2009 and 2009&ndash;2010 winter wheat growing seasons. The results showed that the microclimate of the winter wheat canopy was different among the upper, middle, and deeper layers. Illumination was higher in the upper layer of the canopy than in the middle and deeper layers; under no-tillage + weed-reserving, a greater difference was found among the 3 layers. In the upper layer, illumination was the highest and lowest under no-tillage + weed-control and conventional tillage + weed-control, respectively. In the upper layer, air temperature was higher under no-tillage + weed-control than under conventional tillage + weed-control. The effects of air temperature in the middle and deeper layers were relatively low with tillage and considerably higher with weeds. Relative humidity was the highest and lowest under no-tillage + weed-reserving and conventional tillage + weed-control, respectively. During the winter wheat growing seasons, illumination and air temperature were lower at the heading stage and increased to a maximum at the filling stage, whereas the trend for relative humidity was the opposite. With weed-control, grain yield was significantly (LSD, P &lt; 0.05) higher under conventional tillage than under no-tillage; with weed-reserving, no significant (LSD, P &lt; 0.05) differences in grain yield were found between conventional tillage and no-tillage. The results showed that tillage and weed influenced microclimate vertical distribution in the winter wheat canopy and grain yield of winter wheat.

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