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Journal articles on the topic 'Corn and soybean'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 February 2022

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1

Olmstead, Julia, and E. Charles Brummer. "Benefits and barriers to perennial forage crops in Iowa corn and soybean rotations." Renewable Agriculture and Food Systems 23, no. 2 (2008): 97–107. http://dx.doi.org/10.1017/s1742170507001937.

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AbstractThe transition away from forage-based cropping systems in Iowa to corn and soybean rotations since World War II has corresponded with degraded economic and environmental conditions in the state. Falling net incomes for farmers and concern over global warming and the effects of agriculture-related pollution on water, wildlife and human health have increased interest in diversified cropping systems. This paper reviews the benefits of diversifying Iowa corn and soybean rotations with perennial forage species such as alfalfa and red clover. Perennial forage crops improve soil quality, decr

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Forcella, Frank, and Michael J. Lindstrom. "Movement and Germination of Weed Seeds in Ridge-Till Crop Production Systems." Weed Science 36, no. 1 (1988): 56–59. http://dx.doi.org/10.1017/s0043174500074452.

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The dynamics of buried weed seeds in ridge-tilled corn (Zea maysL.) and soybeans [Glycine max(L.) Merr.] were studied in Minnesota. Soils subjected to continuous corn production harbored at least twice as many buried weed seeds as soils under corn/soybean rotations. Truncation of ridges at the time of crop sowing removed 31 to 37% of the buried weed seeds from ridges of continuous corn, and 80 to 100% of those from ridges of the corn/soybean rotations. From 14 to 36% of weed seeds originally in ridges were lost through germination either on the ridge or in the furrow. Ridging soil at layby sti

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Kadir, Laksmyn, Syam S. Kumaji, and Wirnangsi D. Uno. "Nutrition Analysis of “Sujakaju” as a Functional Drink of Health." Journal of Food Studies 7, no. 1 (2018): 97. http://dx.doi.org/10.5296/jfs.v7i1.13369.

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Malnutrition, poverty and abundant corn crops are the factors that provide the potential for innovation to create “Sujakaju” (corn-soy mil). The innovation aims to tackle the issues in children health and welfare in Gorontalo. The purpose of this study is to generate the proper formulation of a combination of well-nutrition corn-soy milk. The study employed experimental method with four treatments; each treatment group consumes different kind of corn-soy milk, i.e. milk of pulo (waxy) corn and soybean, Kiki corn and soybeans, hybrid corn and soybean, and from sweet corn and soybean with ratio

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4

Beckett, Thomas H., and Edward W. Stoller. "Volunteer Corn (Zea mays) Interference in Soybeans (Glycine max)." Weed Science 36, no. 2 (1988): 159–66. http://dx.doi.org/10.1017/s0043174500074658.

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Volunteer corn (Zea maysL. # ZEAMX) is a troublesome weed in soybeans [Glycine max(L.) Merr.] grown in the Corn Belt. Field studies were conducted in 1983 and 1984 at Champaign, IL, to determine the soybean growth and yield parameters affected by volunteer corn interference. Soybean yield was inversely and linearly related to volunteer corn clump density, with yield losses reaching 25% at 5380 clumps/ha (10 plants/clump). Volunteer corn clumps of 1, 4, 7, and 10 plants reduced soybean yields by 6, 16, 21, and 22%, respectively, at a density of 5380 clumps/ha. Treatments of either the butyl est

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Marques, Karolyna Oliveira, Adriano Jakelaitis, Kátia Cylene Guimarães, Leandro Spíndola Pereira, Isabella Sichierski Cardoso, and Suzete Fernandes Lima. "Production, fermentation profile, and nutritional quality of silage from corn and soybean intercropping." Semina: Ciências Agrárias 40, no. 6Supl2 (2019): 3143. http://dx.doi.org/10.5433/1679-0359.2019v40n6supl2p3143.

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Forage seasonality makes farmers use conservation practices. Mixing corn silage and legumes can enhance silage quality and hence animal productivity. Therefore, this study aimed to evaluate yield and quality of silages from intercropping between genetically modified corn and soybean for glyphosate tolerance (RR - Roundup Ready) as a function of plant spatial arrangement, soybean variety, and sowing fertilization methods. Two intercropping arrangements of RR corn and RR soybeans were tested: alternate single rows of corn and soybeans and double corn rows for each soybean row. Treatments were ra

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Astiko, Wahyu, Ni Made Laksmi Ernawati, and I. Putu Silawibawa. "The Effect of Plant Density at the Maize-Soybean Intercropping Pattern Inoculated With Mycorrhizae and Organic Fertilizer to the Growth and Yield in Dry Land North Lombok, Indonesia." International Journal of Innovative Science and Research Technology 5, no. 7 (2020): 260–66. http://dx.doi.org/10.38124/ijisrt20jul311.

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To avoid the risk of crop failure in a dry land, which is poor in organic matter and at the same time can increase the yield of maize and soybeans, intercropping cultivation techniques and the provision of organic materials are needed. This research aimed to determine the effect of plant density on the intercropping pattern of maize soybean inoculated with mycorrhizae and the addition of organic fertilizers to the growth and yield of maize soybean in dryland North Lombok. This research was conducted at Akar-Akar village in Bayan district of North Lombok. The experimental design with Randomized

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Kristiono, Afandi, and Siti Muzaiyanah. "Response of Corn-Soybean Intercropping to Fertilizer Packages in Dry Land with Dry Climate." PLANTA TROPIKA: Jurnal Agrosains (Journal of Agro Science) 9, no. 2 (2021): 100–108. http://dx.doi.org/10.18196/pt.v9i2.4378.

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Intercropping soybean with corn on dry land with dry climate (DLDC) is an alternative program to expand the soybean cultivation harvested area. This study evaluated the effectiveness of fertilization performance in the intercropping of soybean-corn in DLDC. The experiment in this study was arranged in a randomized block design, consisting of seven fertilizer package treatments with four replications. The spacing between corn (Pertiwi 3) and soybean (Dena 1) was (50 cm x 200 cm) x 40 cm (2 plants/clump) and between soybeans (Dena 1) was 40 cm x 15 cm (2-3 plants/clumps). The observations consis

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8

Lopez-Nicora, Horacio D., Abasola C. M. Simon, Bryant C. Dossman, et al. "Distribution and Abundance of Heterodera glycines and Macrophomina phaseolina in Ohio." Plant Health Progress 17, no. 1 (2016): 35–41. http://dx.doi.org/10.1094/php-s-15-0049.

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Soybean and corn are grown on more than 60% of the arable land in Ohio. The soybean cyst nematode (SCN) is responsible for significant losses incurred by soybean growers every year. The fungus that causes charcoal rot, Macrophomina phaseolina, causes significant yield loss in soybeans worldwide and can also affect corn. Both organisms are soil-borne pathogens. The objective of this study was to determine the presence, distribution, and abundance of both SCN and M. phaseolina in soybean and corn fields across Ohio. During 2013 and 2014, composite soil samples were collected from 370 corn and so

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Acharya, Jyotsna, Thomas B. Moorman, Thomas C. Kaspar, Andrew W. Lenssen, and Alison E. Robertson. "Cover Crop Rotation Effects on Growth and Development, Seedling Disease, and Yield of Corn and Soybean." Plant Disease 104, no. 3 (2020): 677–87. http://dx.doi.org/10.1094/pdis-09-19-1904-re.

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The effects of winter cover crops on root disease and growth of corn and soybeans are poorly understood. A 3-year field experiment investigated the effect of winter cereal rye (Secale cereale L.) and winter camelina (Camelina sativa [L.] Crantz), used either in all three years or in rotation with each other, on corn (Zea mays L.) and soybean (Glycine max. [L.] Merr.) growth, root disease, and yield. Corn following a cover crop of camelina had reduced root disease, a lower Pythium population in seedling roots, and greater growth and yields compared with corn following a rye cover crop. Camelina

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Mbana, Febyningsi Rambu Ladu, Tinjung Mary Prihtanti, and Yuliawati Yuliawati. "Comparative Economic Competitiveness Analysis of Soybean Farming with and without Subsidy to Rice and Corn Farming in Bancak Sub-district, Semarang." AGRIEKONOMIKA 9, no. 2 (2020): 193–204. http://dx.doi.org/10.21107/agriekonomika.v9i2.7855.

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In Indonesia, soybeans are categorized as secondary crops with high demand. Indonesian government still emphasizes soybean self-sufficiency and efforts to grow soybean production, but the low yields and limited profitability of soybeans imply that Indonesian farmers will continue to grow other crops, namely rice or corn. This study aims to identify whether the Semarang district government must issue seed subsidies to support soybean competitiveness in terms of productivity and minimum prices so that it can compete with other crops, namely rice, and corn. Primary and secondary data are used in

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11

Ranzi, Camila, Juliane Nicolodi Camera, and Carolina Cardoso Deuner. "Influence of continuous cropping on corn and soybean pathogens." Summa Phytopathologica 43, no. 1 (2017): 14–19. http://dx.doi.org/10.1590/0100-5405/2150.

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ABSTRACT The objective of this study was to evaluate the influence of two tillage programs (conventional and no-tillage) and different rotations with soybeans and corn on the occurrence of Fusarium species. The work was conducted in the experimental field and Seed Laboratory at Iowa State University. The treatments were: tillage (no-tillage and conventional tillage), crop (corn and soybeans) and three different cropping sequences for corn and soybeans, respectively. Treatment with corn: (1) the first year after four years of soybeans (1C); (2) alternating corn and soybeans each year (C / SB);

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Agustira, Muhammad Akmal, Ilham Lubis, Eka Listia, Erwin Nyak Akoeb, Iman Yani Harahap, and M. Edwin S. Lubis. "FINANCIAL AND ECONOMIC ANALYSIS OF INTERCROPPING MAIZE AND SOYBEAN ON IMMATURE OIL PALM." Jurnal Penelitian Kelapa Sawit 26, no. 3 (2018): 141–52. http://dx.doi.org/10.22302/iopri.jur.jpks.v26i3.60.

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Maize and soybean can be planted for intercropping on immature oil palm, however its financial and economycal aspects have not been widely studied. This study was aimed to analyze the financial and economic aspects of intercropping of maize and soybean on immature oil palm, level of land use efficiency, and comparison of efficiency between monolculture and intercropping system. The study located in Sorolangun Experimental Station, District of Sorolangun, Jambi. Methods used in the study were farming business analysis, Revenue Cost Ratio (RCR), Return on Investments (ROI), Land Equivalent Ratio

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13

Bethlenfalvay, Gábor J. "NUTRIENT TRANSFER BETWEEN PLANTS THROUGH MYCORRHIZAL HYPHAE." HortScience 25, no. 9 (1990): 1065a—1065. http://dx.doi.org/10.21273/hortsci.25.9.1065a.

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Soybean (Glycine ma × (L.) Merr.) and corn (Zea mays L.) plants were colonized by vesicular—arbuscular mycorrhizal (VAM) fungi and grown under controlled conditions. Three-part growth containers were used which separated the roots of N-donor (soybean) and N-receiver (corn) plants by screens (40 μm), permeable to VAM hyphae but not to roots. Significant, two-way nutrient transport occurred between plants connected only by the hyphae across a root-free soil bridge. Corn, when associated with nonnodulated, N-fertilized soybean, increased 19% in biomass and 67% in N content relative to similar, bu

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Peterson, Todd Andrews, Charles A. Shapiro, and A. Dale Flowerday. "Rainfall and previous crop effects on crop yields." American Journal of Alternative Agriculture 5, no. 1 (1990): 33–37. http://dx.doi.org/10.1017/s0889189300003209.

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AbstractAfield study was conducted between 1972 and 1982 to compare the effects of previous crop on row crop yields under rainfed conditions in eastern Nebraska. The objectives were to determine the effects of fallow and three previous crops: corn (Lea. maysLJ, soybeans /Glycine max (L.) Mem], and grain sorghum /Sorghum bicolor (L.) Moench], on the growth and grain yield of the same crops. The study was conducted on a Sharpsburg silty clay loam (fine, montmorillonitic, mesicf Typic Argiudoll). Corn grain yield was most variable (C. V. 23.4percent) compared to soybean (C. V. 13.6percent) or gra

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15

Yiridoe, Emmanuel K., Tony J. Vyn, Alfons Weersink, David C. Hooker, and Clarence Swanton. "Farm-level profitability analysis of alternative tillage systems on clay soils." Canadian Journal of Plant Science 80, no. 1 (2000): 65–73. http://dx.doi.org/10.4141/p99-004.

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Crop yields, production costs, and net returns for seven alternative conservation tillage (including five reduced tillage and two no-till) treatments were compared with a conventional tillage (CT) treatment for a corn (Zea mays L.) – soybean (Glycine max L. Merr) rotation for two clay soils in southwestern Ontario. There was no significant difference in corn and soybean yields between the CT and the conservation tillage systems at either location, although actual yields tended to be highest for CT management. Tillage treatments that used a common set of machinery for corn and soybean productio

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Priyadi, Sapto, Soelistijono, Setie Harieni, and Kusriani Prasetyowati. "Identifikasi Logam Berat dalam Biji Jagung Manis dan Kedelai pada Transisi Sistem Pertanian Organik." agriTECH 38, no. 4 (2019): 456. http://dx.doi.org/10.22146/agritech.24739.

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Heavy metals contaminants in land agriculture are environmental problems and to reduce the food safety, so that too needed for the research of Pb, Cd and Cu decrease absorption by plants using organic chelating agent i.e. substance of humus (humic and fulvic acid) in there manure. The research was done with completely block design, in Gagaksipat, Ngemplak, Boyolali; heavy metal analysis in manure, land and seeds use atomic absorption spectrophotometer-flame (AAS Jena Contr AA 300 German). It was aimed to identify contaminants of Pb, Cd, and Cu in sweet corn and soybean seeds. The research trea

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Taheripour, Farzad, Julie Fiegel, and Wallace E. Tyner. "Development of Corn Stover Biofuel: Impacts on Corn and Soybean Markets and Crop Rotation." Sustainable Agriculture Research 5, no. 1 (2015): 1. http://dx.doi.org/10.5539/sar.v5n1p1.

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What would be the impacts of a viable market for corn stover? A partial equilibrium model and a linear programing model were used to determine to what extent the existence of a viable market for corn stover would affect the traditional corn-soybean crop rotation in the US. We find that with government support production of biofuel from corn stover could significantly increase. That boosts profitability of farming corn in combination with harvesting corn stover versus soybeans. We show that if corn stover is demanded for biofuel, then a major shift will be observed in crop rotations in the US.

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18

Haniotis, Tassos, John Baffes, and Glenn C. W. Ames. "The Demand and Supply of U.S. Agricultural Exports: The Case of Wheat, Corn, and Soybeans." Journal of Agricultural and Applied Economics 20, no. 2 (1988): 45–56. http://dx.doi.org/10.1017/s0081305200017581.

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AbstractThe demand for and supply of U.S. wheat, corn, and soybean exports is specified in a dynamic framework. Obtained results indicate differences in the export behavior of each product. U.S. corn exports are elastic, while U.S. soybean exports exhibit an inelastic response. For wheat, the derived elasticity of export demand had a positive sign. Hypothesis testing validated the dynamic structure of the estimated models in all markets. Stability properties were confirmed in export markets of corn and soybeans, but results were inconclusive for the wheat market. Adjustment coefficients indica

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Rodehorst, Wayde J., Mike H. Ostlie, Rebecca L. Moore, and Bryan W. Neville. "PSVIII-28 Intercropping corn with field peas or forage soybeans for use as silage." Journal of Animal Science 98, Supplement_4 (2020): 327–28. http://dx.doi.org/10.1093/jas/skaa278.583.

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Abstract The objective of this study was to evaluate forage production and compare nutrient content of intercropped corn/legume silages. Forage production was determined by harvesting 3 m by 7.7 m plots (n = 4). Corn was seeded at 79,000 seeds/ha and intercropped with 408,000, 538,000, or 815,000 seeds/ha of field peas; or corn intercropped with 272,000, 359,000, or 544,000 seeds/ha of forage soybean. All forages were harvested on a common date. Subsamples of forage were utilized in a laboratory scale ensiling study. Forage samples were stored in vacuum bags for 28 d prior to determination of

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Liebl, Rex, F. William Simmons, Loyd M. Wax, and Edward W. Stoller. "Effect of Rye (Secale cereale) Mulch on Weed Control and Soil Moisture in Soybean (Glycine max)." Weed Technology 6, no. 4 (1992): 838–46. http://dx.doi.org/10.1017/s0890037x00036356.

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A four-year experiment was conducted near Urbana, IL to evaluate the effect of a rye cover crop on weed control, soybean yield and soil moisture. Soybeans were planted into either a rye mulch or corn stubble (with and without spring tillage). Giant foxtail, velvetleaf, smooth pigweed and common lambsquarters control in the rye mulch plots was generally greater than 90% and better than the corn residue treatments five weeks after planting. Weed control was generally better, except for lambsquarters, in the corn residue without spring tillage plots compared to the spring-tilled plots. Herbicides

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Situmorang, Sudiwan, Retna Astuti Kuswardani, and Ihsan Effendi. "Analisis Ketersediaan dan Kebutuhan Kedelai di Provinsi Sumatera Utara." AGRISAINS: Jurnal Ilmiah Magister Agribisnis 2, no. 2 (2020): 194–207. http://dx.doi.org/10.31289/agrisains.v2i2.300.

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Soybean availability in North Sumatra Province have to be considered, this is caused by soybean being the third most important food after rice and corn. This study aims to analyze the factors that influence the availability and needs of soybeans in North Sumatra. This study uses secondary data on the availability and needs of soybeans in North Sumatra from 2008-2017. Secondary data collected in this study came from related agencies such as the Central Statistics Agency, the North Sumatra Province Food Security Agency, the North Sumatra Province Agriculture Office and the Belawan Agricultural Q

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Alqorni, Abdul Wahid, and Sigit Soeparjono. "Increasing corn and soybean yields by arranging the plant spacing and NPK fertilizer dosages in intercropping system." Journal of Tropical Industrial Agriculture and Rural Development 1, no. 1 (2020): 8. http://dx.doi.org/10.19184/jtiard.v1i1.16403.

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Corn and soybean are food crops which are ranked on the second and third position as the main crops with the highest yield in Indonesia. Based on data of 2012, corn and soybean harvested areas amounted 3,956 ha and 597.65 ha with the productivity of 48.99 tons/ha and 843.15 tons/ha, these areas increased up to 4,388 ha (corn) and 589.42 ha (soybeans) which lead an increase in corn and soybean production by 52.85 tons/ha and 887.54 tons/ha. However, increasing crop productivity, especially for corn and soybeans, cannot continuously use land expansion because the land area of Indonesia that is s

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Abbas, Hamed K., Nacer Bellaloui, Robert M. Zablotowicz, H. Arnold Bruns, and Anne M. Gillen. "Corn-Soybean Rotation Systems in the Mississippi Delta: Implications on Mycotoxin Contamination and Soil Populations ofAspergillus flavus." International Journal of Agronomy 2012 (2012): 1–7. http://dx.doi.org/10.1155/2012/935463.

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The effect of corn-soybean rotation on mycotoxin contamination in corn (Zea maysL.) and soybean (Glycine maxL. Merrill.) grains has not been fully evaluated. Therefore, this research investigated the effect of corn-soybean rotation on aflatoxin and fumonisin contamination in respective grains. The results showed that aflatoxin levels in soybean averaged 2.3,<0.5, 0.6, and 6.8 ng/g in 2005, 2006, 2007, and 2008, while corn aflatoxin levels were 16.7, 37.1, 2.4, and 54.8 ng/g, respectively.Aspergillus flavuscolonization was significantly greater (P≤0.05) in corn (log 1.9, 2.9, and 4.0 cfu/g)

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Rembon, F. S., and A. F. MacKenzie. "Soybean nitrogen contribution to corn and residual nitrate under conventional tillage and no-till." Canadian Journal of Soil Science 77, no. 4 (1997): 543–51. http://dx.doi.org/10.4141/s96-096.

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Soybean (Glycine max L. Merill) can produce high-N residues that may benefit subsequent corn (Zea mays L.) production, but the degree of benefit is often unpredictable and may be related to tillage methods. This study investigated the effects of conventional-tillage (CT) and no-tillage (NT) on fertilizer replacement values for corn in a corn-soybean rotation. Field experiments were conducted for two growing seasons on two soils, a Ste. Rosalie clay (Humic Gleysol), and an Ormstown silty clay (Humic Gleysol). Continuous corn, corn following soybean, soybean following corn, continuous soybean, a

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Delate, Kathleen, Michael Duffy, Craig Chase, Ann Holste, Heather Friedrich, and Noreen Wantate. "An economic comparison of organic and conventional grain crops in a long-term agroecological research (LTAR) site in lowa." American Journal of Alternative Agriculture 18, no. 2 (2003): 59–69. http://dx.doi.org/10.1079/ajaa200235.

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AbstractBased on the interest of organic and conventional farmers in Iowa in long-term analysis of organic systems, the Neely-Kinyon Long-Term Agroecological Research (LTAR) site was established in 1998 to examine the agronomic and economic performance of conventional and organic systems, using certified organic production practices. We report the results of the economic analysis from 3 years of production (1999–2001). Using organic price premiums for organic crops, returns for corn within the organic corn-soybean-oat and corn-soybean-oat-alfalfa rotations were significantly greater than conve

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Drewnoski, Mary E., Jim C. MacDonald, Galen E. Erickson, Kathy J. Hanford, and Terry J. Klopfenstein. "Long‐Term Corn Residue Grazing Improves Subsequent Soybean Yields in a Corn–Soybean Rotation." Crop, Forage & Turfgrass Management 2, no. 1 (2016): 1–6. http://dx.doi.org/10.2134/cftm2015.0192.

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Drewnoski, Mary E., Jim C. MacDonald, Galen E. Erickson, Terry J. Klopfenstein, and Kathy J. Hanford. "Long-term corn residue grazing improves subsequent soybean yields in a corn-soybean rotation." Crops & Soils 50, no. 2 (2017): 36–41. http://dx.doi.org/10.2134/cs2017.50.0206.

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Nelson, Kellar E., Deanna S. Boardman-Smith, and William J. Wiebold. "Removing Corn Stover Has Little Effect on Soybean Performance in a Corn-Soybean Rotation." Crop Management 12, no. 1 (2013): CM—2012–0177—RS. http://dx.doi.org/10.1094/cm-2012-0177-rs.

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Nirschl, Matheus Gomes, Risely Ferraz De Almeida, Eduardo Zavaschi, Lílian Angélica Moreira, Godofredo César Vitti, and Rafael Otto. "Assessing the Effectiveness of Zn Acetate and Oxide as Alternatives for Corn and Soybean Seed Treatment in Sandy and Clay Soil." Journal of Agricultural Science 9, no. 12 (2017): 63. http://dx.doi.org/10.5539/jas.v9n12p63.

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Zinc (Zn) is the micronutrient with the lowest availability in agricultural soils, and consequently 50 % of the world’s soils present Zn deficient. To test the viability of alternative Zn sources (Zn acetate and Zn oxide) to corn and soybean seed treatments, we ran an experiment using these two alternatives at contrasting application rates (0; 0.25; 0.50; 0.76 and 1.01 g kg-1) applied to soybean and corn seeds that were subsequently sowed in sandy and clay soils. We measured: Zn accumulation, dry matter and germination, and analyzed this data using uni (LSD-test) and multivariate analysis (Pri

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Stemeroff, Marvin, Clarence J. Swanton, Allan S. Hamill, and Rudy H. Brown. "Economics of Herbicide use on Corn (Zea mays) and Soybeans (Glycine max) in Ontario." Weed Technology 2, no. 4 (1988): 466–72. http://dx.doi.org/10.1017/s0890037x00032280.

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The productivity of herbicides used in corn and soybeans was calculated from field data collected in Ontario from 1967 to 1985. Combinations of preplant incorporated and preemergence treatments were selected and were evaluated to determine their effect on crop yield. Corn and soybean yields increased from herbicide use, thereby resulting in a positive net benefit to growers. Benefit/cost ratios for herbicide use in corn and soybeans were calculated to be 2.8/1 and 2.6/1, respectively, at an average price of $132/1000 kg for corn and $275/1000 kg for soybeans. The benefit/cost ratios varied wit

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Yenish, Joseph P., Thomas A. Fry, Beverly R. Durgan, and Donald L. Wyse. "Establishment of common milkweed (Asclepias syriaca) in corn, soybean, and wheat." Weed Science 45, no. 1 (1997): 44–53. http://dx.doi.org/10.1017/s0043174500092468.

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The establishment of common milkweed in corn, soybean, and wheat and rotations of corn-soybean and soybean-wheat was determined in field studies at Rosemount and Morris, MN. Common milkweed seedling density 115 d after initial seedling emergence was 500, 15,000, and 31,300 seedlings ha−1in corn, soybean, and wheat, respectively, in 1990; 500, 7,300, and 15,600 in 1991 at Rosemount and 2,900, 26,500, and 37,000 in 1990; and 2,200, 6,700, and 8,100 in 1991 at Morris in the year of seedling establishment. Common milkweed seedling defoliation by mon arch butterfly larva was 1,31, and 0% at Rosemou

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Ulloa, Santiago M., and Micheal D. K. Owen. "Response of Asiatic Dayflower (Commelina communis) to Glyphosate and Alternatives in Soybean." Weed Science 57, no. 1 (2009): 74–80. http://dx.doi.org/10.1614/ws-08-087.1.

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Asiatic dayflower has recently become a troublesome weed in eastern Iowa. This weed demonstrates an extended emergence period and there is anecdotal evidence of glyphosate tolerance. Thus, Asiatic dayflower is difficult to manage in glyphosate-resistant (GR) corn and soybean. Greenhouse experiments were conducted to evaluate the response of Asiatic dayflower to glyphosate applied at different rates and growth stages. Field research was conducted in 2005 and 2006 to evaluate different herbicides for Asiatic dayflower control in soybean. PRE herbicides were applied at planting and POST herbicide

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Tanchyk, S. P., D. V. Litvinov, and V. V. Sinchenko. "Cycle of biomass and elements of plant nutrition in soybean crops depending on various preceding crops and primary tillage." Plant and Soil Science 11, no. 3 (2020): 61–69. http://dx.doi.org/10.31548/agr2020.03.061.

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The article analyzes the main laws of the biological cycle of soybean plant biomass, and the parameters of recirculation of nutrients depending on the method and depth of the primary tillage and various preceding crops. It was found that the share of biomass alienated from the field with soybean harvest, depending on the various preceding crops and the primary tillage varied from 31,6 to 32,8 %, which in absolute terms ranged from 1,93 to 3,25 t/ha, and received to the soil with plant residues: from 3,97 to 6,67 t/ha or from 67,2 to 68,4 %. The largest amount of nutrients from 310,2 to 420,5 k

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Alms, Jill, Michael Moechnig, David Vos, and Sharon A. Clay. "Yield Loss and Management of Volunteer Corn in Soybean." Weed Technology 30, no. 1 (2016): 254–62. http://dx.doi.org/10.1614/wt-d-15-00096.1.

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Volunteer corn is often overlooked as a weed in soybean. To aid in management decisions, this study determined soybean yield loss attributed to volunteer corn and efficacy of various herbicides at several rates and timings. A hyperbolic equation estimated (R2= 0.88) incremental yield loss (I) of 39.7% at low density when maximum yield loss (A) was constrained to 71%, the highest yield loss observed in these trials, revealing a more competitive plant than many common midwestern weedy species. Clethodim applied at 51 g ai ha−1at V4 soybean resulted in > 90% volunteer corn control with < 5%

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Alms, Jill, Sharon A. Clay, David Vos, and Michael Moechnig. "Corn Yield Loss Due to Volunteer Soybean." Weed Science 64, no. 3 (2016): 495–500. http://dx.doi.org/10.1614/ws-d-16-00004.1.

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The widespread adoption of glyphosate-resistant corn and soybean in cropping rotations often results in volunteer plants from the previous season becoming problem weeds that require alternative herbicides for control. Corn yield losses due to season-long volunteer soybean competition at several densities in two growing seasons were used to define a hyperbolic yield loss function. The maximum corn yield loss observed at high volunteer soybean densities was about 56%, whereas, the incremental yield loss (I) at low densities was 3.2%. Corn yield loss at low volunteer soybean densities was similar

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Sosnoskie, Lynn M., Catherine P. Herms, John Cardina, and Theodore M. Webster. "Seedbank and Emerged Weed Communities Following Adoption of Glyphosate-Resistant Crops in a Long-Term Tillage and Rotation Study." Weed Science 57, no. 3 (2009): 261–70. http://dx.doi.org/10.1614/ws-08-147.1.

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The compositions of the germinable weed seedbank and aboveground weed communities in a long-term tillage and rotation study were characterized 4, 5, and 6 yr (2002 to 2004) after the adoption of glyphosate-tolerant corn and soybean. Averaged across rotation, mean germinable weed seed density and diversity were greatest in the no-tillage treatment as compared to the minimum- and conventional-tillage treatments. Averaged over tillage, density and diversity were greater in the corn–oat–hay (ryegrass + alfalfa) system as compared to the continuous corn and corn–soybean rotations. Similar trends in

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Langemeier, Michael R., Xiaoyi Fang, and Michael O’Donnell. "Comparison of Long-Run Net Returns of Conventional and Organic Crop Rotations." Sustainability 12, no. 19 (2020): 7891. http://dx.doi.org/10.3390/su12197891.

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This study compares the long-run net returns to land of conventional corn/soybean and corn/soybean/wheat crop rotations to that of an organic corn/soybean/wheat crop rotation. The net returns to land for the organic crop rotation were found to be approximately $68 and $74 per acre higher than those of the conventional corn/soybean and conventional corn/soybean/wheat crop rotations, respectively. Average net return estimates are sensitive to price, yield, and cost assumptions. Organic crop prices would have to drop more than 17.8 percent and organic crop yields would have to drop more than 16.8

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Zhang, B. Q., and X. B. Yang. "Pathogenicity of Pythium Populations from Corn-Soybean Rotation Fields." Plant Disease 84, no. 1 (2000): 94–99. http://dx.doi.org/10.1094/pdis.2000.84.1.94.

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Corn and soybean have been rotated for decades in the north central regions of the United States, but it is unknown how the use of long-term rotation affects the population of soilborne fungi pathogenic to both crops. Pythium populations were obtained from 73 commercial corn-soybean rotation fields in Iowa from 1993 to 1995. A total of 163 Pythium isolates were obtained from soil, diseased soybean seedlings, or diseased corn seedlings, and these isolates were pooled into six populations according to the source of samples. The isolates were evaluated for their aggressiveness on corn and soybean

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Mottin, Marcos Cesar, Edleusa Pereira Seidel, Emerson Fey, Jaqueline Vanelli, André Luiz Alves, and Monica Carolina Sustakowski. "Corn and Soybean Productivity in Succession to Family Coverage Plants Poaceae and Fabaceae." Journal of Agricultural Studies 9, no. 3 (2021): 111. http://dx.doi.org/10.5296/jas.v9i3.18665.

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The use of soil cover plants has varied effects on crops grown in succession, depending on the cover plant used. The objective of this study was to evaluate the effect of soil cover plants from the Poaceae and Fabaceae families grown in the autumn and winter on yields of corn and soybean grown in succession. The experiment was carried out for two years and the experimental design used was randomized block design, with six replications. Both in the first year and the second, the plots consisted of the cultivation of corn or soybeans on the different biomasses of four cover crops cultivated in a

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Choi, Jung-Sup, and Peter G. Helmberger. "How Sensitive are Crop Yields to Price Changes and Farm Programs?" Journal of Agricultural and Applied Economics 25, no. 1 (1993): 237–44. http://dx.doi.org/10.1017/s1074070800018794.

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AbstractA two-stage approach is used to estimate sensitivity of corn, wheat, and soybean yields to changes in prices and land idled. Estimated elasticity of demand for fertilizer per acre with respect to expected output price equals 0.47, 0.10, and 0.82 for corn, wheat, and soybeans. Upper estimates of the elasticity of yield with respect to fertilizer equals +0.58, +0.29, and +0.16 for corn, wheat, and soybeans. Yields are found to be quite insensitive to price changes. Fertilizer demands and yields are insensitive to land idled under farm programs.

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Armel, Gregory R., David J. Mayonado, Kriton K. Hatzios, and Henry P. Wilson. "Absorption and Translocation of SC-0051 in Corn and Soybean." Weed Technology 18, no. 2 (2004): 211–14. http://dx.doi.org/10.1614/wt-02-114.

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Studies were conducted to compare foliar- and root-based absorption and translocation of SC-0051 in corn and soybean using radio-tracer techniques. Visual injury symptoms expressed in soybean by SC-0051 were bleaching in newly formed (meristematic) tissue followed by necrosis. Corn expressed little to no visual injury. SC-0051 was absorbed more rapidly by foliage of corn and soybean than by their roots. Although soybean absorbed more SC-0051 through roots than did corn, there was no difference between species in foliar absorption of SC-0051. SC-0051 was rapidly translocated throughout corn pla

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Constantin, Jamil, Denis Fernando Biffe, Rubem Silvério de Oliveira Jr., et al. "Use of residual herbicides in soybean and impact on corn in succession." Comunicata Scientiae 9, no. 3 (2018): 481–91. http://dx.doi.org/10.14295/cs.v9i3.2006.

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The weed resistance to herbicides has generated the need to adopt different management strategies, listing the tank mixture applications and use of herbicides in different modalities. In this context, it is essential to evaluate the selectivity of these herbicides associations for the crop in which the positioning is performed, as well as the effect of the residual activity of these affecting the crop sown in succession. The objective of this study was to evaluate the control efficacy and selectivity of herbicides applied in pre and post-emergence in soybeans, and the effect of the residual ac

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Helmers, M. J., X. Zhou, J. L. Baker, S. W. Melvin, and D. W. Lemke. "Nitrogen loss on tile-drained Mollisols as affected by nitrogen application rate under continuous corn and corn-soybean rotation systems." Canadian Journal of Soil Science 92, no. 3 (2012): 493–99. http://dx.doi.org/10.4141/cjss2010-043.

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Helmers, M. J., Zhou, X., Baker, J. L., Melvin, S. W. and Lemke, D. W. 2012. Nitrogen loss on tile-drained Mollisols as affected by nitrogen application rate under continuous corn and corn-soybean rotation systems. Can. J. Soil Sci. 92: 493–499. Nitrate-nitrogen (NO3-N) loss from production agricultural systems through subsurface drainage networks is of local and regional concern throughout the Midwestern United States. The increased corn acreage and the practice of growing continuous corn instead of a corn-soybean rotation system due to the increasing demand for food and energy have raised qu

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Dayegamiye, Adrien N., Judith Nyiraneza, Johann K. Whalen, Michèle Grenier, and Anne Drapeau. "Growing Soybean Prior to Corn Increased Soil Nitrogen Supply and N Fertilizer Efficiency for Corn in Cold and Humid Conditions of Eastern Canada." Sustainable Agriculture Research 1, no. 2 (2012): 257. http://dx.doi.org/10.5539/sar.v1n2p257.

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<p>Growing soybean (<em>Glycine max L.)</em> prior to corn (<em>Zea mays</em> L) can enhance corn grain and nitrogen (N) use efficiency compared to continuous corn. This two year study (2007-2008) was conducted at 62 sites in Quebec (Eastern Canada) to assess the effect of crop rotations [soybean-corn, soybean-wheat (<em>Triticum aestivum</em> L.,)-corn and corn-corn] on corn yield, N uptake, N fertilizer efficiency (NFE), and the economic optimum N rate (EONR). Plots within each crop rotation received N fertilizer rates from 0 to 250 kg N ha<sup&gt

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Martin, R. C., T. Astatkie, and J. M. Cooper. "The effect of soybean variety on corn-soybean intercrop biomass and protein yields." Canadian Journal of Plant Science 78, no. 2 (1998): 289–94. http://dx.doi.org/10.4141/p97-030.

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Soybean intercropped with corn can produce a high-quality silage, but pods of early maturing soybean varieties usually shatter when harvested, thus reducing the silage protein potential. In 1991 and 1992, an experiment was conducted in Truro, Nova Scotia, and Sussex, New Brunswick, to determine whether later soybean varieties can provide sufficient biomass and protein in intercrops and escape pod losses at harvest. Early, early high protein, medium, late and very late maturing varieties of soybean were grown as monocrops and intercrops with corn. Eight response variables were measured: soybean

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Alves, Alex João, Danielly Wisoczynski de Sene, Gabriel Ferreira de Paula, Gilberto Bueno Demétrio, and Leopoldo Sussumu Matsumoto. "Influence of Bacillus sp. on soil chemical and microbiological attributes and development of soybean and maize." Revista Mexicana de Ciencias Agrícolas 12, no. 3 (2021): 383–93. http://dx.doi.org/10.29312/remexca.v12i3.2609.

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Plant growth-promoting rhizobacteria (PGPR) inhabit the rhizosphere of several cultivated plants. Bacteria of the genus Bacillus have great functional importance in plant development. The objective of this research was to evaluate different doses of Bacillus sp. in the development of soybean and corn crops and in the chemical and microbiological attributes of the soil. The essays were conducted in the field in the 2016/2017 harvest. The soybean and corn seeds were treated with two doses of Bacillus sp. at a concentration of 109 CFU ml-1, with 10 and 20 ml of 100 kg of seed used in soybeans and

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Zhang, Xiaoyu, and Yongfu Liu. "The dynamic impact of international agricultural commodity price fluctuation on Chinese agricultural commodity prices." International Food and Agribusiness Management Review 23, no. 3 (2020): 391–409. http://dx.doi.org/10.22434/ifamr2019.0172.

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The correlation between Chinese and international commodity prices may be nonlinear because of China’s minimum agricultural commodity purchase price policy and temporary storage policy. In order to research this nonlinear dynamic correlation mechanism, we construct a nonlinear Granger causality test model and a nonlinear autoregressive distribution lag model including Chinese and international agricultural commodity (soybean, corn, rice, and wheat) price variables. Our empirical results reveal that a unidirectional causal relation exists between international and Chinese prices for soybeans an

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Fan, Ming X., Angus F. MacKenzie, Melissa Abbott, and François Cadrin. "Denitrification estimates in monoculture and rotation corn as influenced by tillage and nitrogen fertilizer." Canadian Journal of Soil Science 77, no. 3 (1997): 389–96. http://dx.doi.org/10.4141/s96-060.

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Denitrification in agricultural soils results in loss of N for crop growth and production of N2O, a greenhouse gas. Agricultural management must be evaluated for denitrification losses in order to develop minimum N loss systems. Field estimation of denitrification losses is necessary to evaluate crop management effects. Two methods of field denitrification measurements, a soil core (SC) incubation and an in situ closed chamber (CC), were assessed in monoculture corn (Zea mays L.) and corn in rotation with soybean (Glycine max L. Merill) and alfalfa (Medicago sativa L.). Relative estimates of d

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Livingston, Michael, Jorge Fernandez-Cornejo, and George B. Frisvold. "Economic Returns to Herbicide Resistance Management in the Short and Long Run: The Role of Neighbor Effects." Weed Science 64, SP1 (2016): 595–608. http://dx.doi.org/10.1614/ws-d-15-00047.1.

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A bioeconomic model is used to estimate how managing glyphosate resistance to horseweed affects short- and long-run profits in corn, soybean, and corn-soybean rotation systems. Model results found that resistance management reduces profits in the first year of implementation, but increases profits in the second and subsequent 18 yr. In all three systems, long run gains begin to outweigh short-run costs (and resistance management “pays for itself”) by the second year. Over a 20-yr horizon, the estimated annual average profit advantage from managing resistance exceeded $158 ha–1($64/acre) for co

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Marquardt, Paul T., and William G. Johnson. "Influence of Clethodim Application Timing on Control of Volunteer Corn in Soybean." Weed Technology 27, no. 4 (2013): 645–48. http://dx.doi.org/10.1614/wt-d-12-00188.1.

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Herbicide options for management of volunteer corn in soybean include a variety of acetyl CoA carboxylase-inhibiting herbicides, yet often, applications of acetyl CoA carboxylase herbicides are delayed until the weed is visible above the soybean canopy. Volunteer corn growing above the soybean canopy is a highly competitive weed, and herbicides applied at this point can kill the weed, yet soybean yield loss is still a concern. Our objective was to compare the effect of controlling various densities of volunteer corn growing in soybean EARLY (≤ 30 cm) versus LATE (≈ 90 cm) on percent control an

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