Modeling Long-Term Corn Yield Response to Nitrogen Rate and Crop Rotation

Control and regrowth of hemp dogbane, wild blackberry, and triazine-resistant common lambsquarters (TR-CHEAL) were studied in no-till corn from 1992 to 1994. Hemp dogbane, wild blackberry, and TR-CHEAL population increased 10, 123, and 177%, respectively, between 1992 and 1994 in plots treated with PRE applications of paraquat, atrazine, and metolachlor (weedy checks). POST applications of tank mixtures of 35 g ai/ha nicosulfuron or 20 g/ha primisulfuron with 280 g/ha 2,4-D or 140 g/ha dicamba, and 560 g/ha dicamba applied alone controlled hemp dogbane, wild blackberry, and TR-CHEAL 67 to 98%. These treatments reduced the population or prevented expansion of these weeds the year following treatment. In 1992, corn yield response to weed control was inconsistent. In 1993 and 1994, all plots treated with POST herbicides yielded higher than the weedy check. Corn yield of plots treated with combinations of nicosulfuron or primisulfuron with 2,4-D or dicamba and 560 g/ha dicamba applied alone were 102 to 149% and 124 to 153% higher than the weedy check in 1993 and 1994, respectively.

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Corn yield response to irrigation level, crop rotation, and irrigation system

Journal of Crop Improvement ◽

10.1080/15427528.2021.2005212 ◽

2021 ◽

pp. 1-16

Author(s):

Ronald B. Sorensen ◽

Marshall C. Lamb ◽

Christopher L. Butts

Keyword(s):

Crop Rotation ◽

Irrigation System ◽

Yield Response ◽

Corn Yield ◽

Irrigation Level

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Long-term (35 years) effects of fertilization, rotation and weather on corn yields

Canadian Journal of Plant Science ◽

10.4141/cjps95-060 ◽

1995 ◽

Vol 75 (2) ◽

pp. 355-362 ◽

Cited By ~ 51

Author(s):

C. F. Drury ◽

C. S. Tan

Keyword(s):

Grain Yield ◽

Crop Rotation ◽

Potential Evapotranspiration ◽

Corn Yield ◽

Weather Factors ◽

Grain Yields ◽

Continuous Corn ◽

Corn Grain ◽

Corn Grain Yield

Long-term effects of fertilization, crop rotation and weather factors [temperature, precipitation, net radiation, maximum (potential) evapotranspiration (ET) and corn heat units (CHU)] on the sustainability of corn grain yields were investigated over 35 yr. Treatments included fertilized and unfertilized continuous com and rotation corn-oats-alfalfa-alfalfa. The fertilized rotation corn treatment produced the greatest corn grain yields (15% moisture content) with an average of 7.75 t ha−1 followed by the fertilized continuous corn treatment with 6.02 t ha−1. Fertilization increased grain yield for continuous corn treatments by 279% and increased grain yields in the rotational corn treatments by 70%. Corn grain yields increased with time with the fertilized rotation treatment, remained relatively constant with the fertilized continuous corn and decreased with the unfertilized treatments. Growing season precipitation was the only weather variable tested which was significantly related to corn grain yield. Precipitation in July was proportional to corn grain yield for all fertilized treatments. Weather variation played little role for unfertilized corn. Continuous corn production was sustained (yields did not decrease with time) when fertilizer was added. There was a considerable yield advantage with fertilized corn when grown in a rotation compared with fertilized continuous corn. Fertilization and crop rotation practices increased and buffered corn yields. Key words: Long-term, corn, yield, fertilization, rotation, weather

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Weather effects on corn response to in-season nitrogen rates

Canadian Journal of Plant Science ◽

10.4141/cjps2012-145 ◽

2013 ◽

Vol 93 (3) ◽

pp. 407-417 ◽

Cited By ~ 13

Author(s):

M. Xie ◽

N. Tremblay ◽

G. Tremblay ◽

G. Bourgeois ◽

M. Y. Bouroubi ◽

...

Keyword(s):

Meta Analysis ◽

Yield Response ◽

Corn Yield ◽

Humid Climate ◽

Nitrogen Rate ◽

Nitrogen Response ◽

Weather Effects ◽

Nitrogen Rates ◽

The Impact ◽

Low Precipitation

Xie, M., Tremblay, N., Tremblay, G., Bourgeois, G., Bouroubi, M. Y. and Wei, Z. 2013. Weather effects on corn response to in-season nitrogen rates. Can. J. Plant Sci. 93: 407–417. The response of corn yield to in-season nitrogen rate (ISNR) fertilizer applications in a temperate humid climate is conditioned to a great extent by prevailing weather conditions, which affect nitrogen use efficiency and raise the level of uncertainty for making management decisions. A better understanding of the effects of temperature, expressed as accumulated corn heat units (CHU), and precipitation would help to ensure that a “closer-to-optimal” nitrogen rate is supplied at side-dressing. A meta-analysis was performed using a database of nitrogen response trials conducted from 1997 to 2008 in 60 locations in the corn grain production area of Québec, in conjunction with a weather database. Meta-analysis is a statistical procedure for combining results from a series of studies that is used in many fields of research. It is used to assess treatment effect (also called effect size) in a group of studies or experiments. Corn yield response to ISNR was negatively correlated with overall CHU accumulation, but positively correlated with CHU accumulation before side-dressing. Responses also showed a stronger relationship with cumulative precipitation (PPT) before side-dressing than after side-dressing. High and evenly distributed precipitation before side-dressing tended to increase responses to ISNR. It can be concluded that low CHU, low precipitation and low precipitation evenness before side-dressing reduce the impact of ISNR on corn yield.

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Corn Yield Response to Cover Crops and N Rates Under Long-Term Conventional and No-Tillage Management

Journal of Sustainable Agriculture ◽

10.1300/j064v08n01_08 ◽

1996 ◽

Vol 8 (1) ◽

pp. 61-72 ◽

Cited By ~ 6

Author(s):

Zhiguo Zhang ◽

R. L. Blevins

Keyword(s):

Cover Crops ◽

Yield Response ◽

Corn Yield ◽

No Tillage ◽

N Rates

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Crop rotations with clover and their productivity

Multifunctional adaptive feed production № 23 (71) ◽

10.33814/mak-2020-23-71-38-42 ◽

2020 ◽

Author(s):

Ol'ga Gladysheva ◽

Oksana Artyuhova ◽

Vera Svirina

Keyword(s):

Forest Soil ◽

Crop Rotation ◽

Gray Forest Soil ◽

Arable Land ◽

Perennial Grasses ◽

Crop Rotations ◽

Field Crop ◽

Pure Steam ◽

Positive Effect

The results of long-term research in experiments with crop rotations with different clover saturation are presented. It is shown that the cluster has a positive effect on the main indicators of vegetation of dark-gray forest soil. The introduction of two fields of perennial grasses into the six-field crop rotation significantly increases both the humus reserves and increases the productivity of arable land by 1.5–2 times compared to the crop rotation with a field of pure steam.

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