Corn Yield is Equal in Conventional, Reduced, and No Tillage after 20 Years

Kapuśta, George; Krausz, Ronald F.; Matthews, Joseph L.

doi:10.2134/agronj1996.00021962008800050021x

Cited by 73 publications

(46 citation statements)

References 24 publications

(36 reference statements)

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“…At the beginning of the experiment, reduced tillage practices often resulted in smaller yields than the control, but this was not true for all years. These results are similar to results of Kapusta et al (1996) Weighted mean differences (t ha -1 ) (2005) reported that after 11 years, maize yields were not affected by tillage and residue practices but climate-related differences seemed to have a greater influence on the variation in yields. When residues were completely removed, yield reductions for maize were attributed to decreased soil water storage and excessive surface soil temperatures, especially in climates where conditions of moisture stress occurred during the growing season (Doran et al 1984).…”

Section: Reduced Tillage Continuous Maizesupporting

confidence: 89%

“…Low yields in poorly drained soils are attributed to allelopathy (Yakle and Cruse 1984) and plant pathogens (Tiarks 1977). Kapusta et al (1996) reported that continuous maize production under no-tillage is most successful on well-drained soil, rather than on either imperfectly or poorly drained soil, especially under wet soil conditions. It has also been suggested that maize monocropping has drastic adverse effects on soil quality and crop yield especially under conditions of low traffic and no-tillage with mulching (Lal 1997).…”

Section: Effect Of Soil Texturementioning

confidence: 99%

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A meta-analysis of long-term effects of conservation agriculture on maize grain yield under rain-fed conditions

Rusinamhodzi

Corbeels²,

Wijk

et al. 2011

Agron. Sustain. Dev.

382

260

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Conservation agriculture involves reduced tillage, permanent soil cover and crop rotations to enhance soil fertility and to supply food from a dwindling land resource. Recently, conservation agriculture has been promoted in Southern Africa, mainly for maize-based farming systems. However, maize yields under rain-fed conditions are often variable. There is therefore a need to identify factors that influence crop yield under conservation agriculture and rain-fed conditions. Here, we studied maize grain yield data from experiments lasting 5 years and more under rain-fed conditions. We assessed the effect of long-term tillage and residue retention on maize grain yield under contrasting soil textures, nitrogen input and climate. Yield variability was measured by stability analysis. Our results show an increase in maize yield over time with conservation agriculture practices that include rotation and high input use in low rainfall areas. But we observed no difference in system stability under those conditions. We observed a strong relationship between maize grain yield and annual rainfall. Our meta-analysis gave the following findings: (1) 92% of the data show that mulch cover in high rainfall areas leads to lower yields due to waterlogging; (2) 85% of data show that soil texture is important in the temporal development of conservation agriculture effects, improved yields are likely on well-drained soils; (3) 73% of the data show that conservation agriculture practices require high inputs especially N for improved yield; (4) 63% of data show that increased yields are obtained with rotation but calculations often do not include the variations in rainfall within and between seasons; (5) 56% of the data show that reduced tillage with no mulch cover leads to lower yields in semi-arid areas; and (6) when adequate fertiliser is available, rainfall is the most important determinant of yield in southern Africa. It is clear from our results that conservation agriculture needs to be targeted and adapted to specific biophysical conditions for improved impact.

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Section: Reduced Tillage Continuous Maizesupporting

confidence: 89%

Section: Effect Of Soil Texturementioning

confidence: 99%

A meta-analysis of long-term effects of conservation agriculture on maize grain yield under rain-fed conditions

Rusinamhodzi

Corbeels²,

Wijk

et al. 2011

Agron. Sustain. Dev.

382

260

View full text Add to dashboard Cite

show abstract

“…Corn plant height is influenced by the water content in the soil (Hussain et al, 1999) [137], soil texture [138], the rate of fertilizer application [106,108,139] and cultivation methods [138]. Measurement of plant height can be conducted using high-resolution ultrasound distance sensing of the crop canopy [140,141].…”

Section: Use Of Sensors and Ndvimentioning

confidence: 99%

A Review of Methods to Improve Nitrogen Use Efficiency in Agriculture

2017

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Management of nitrogen (N) is a challenging task and several methods individually and in combination are in use to manage its efficiency. However, nitrogen use efficiency (NUE) has not been improved to a level, only 33%, as predicted by the researchers while developing nitrogen management tools and methods. The primary objective of this review article is to evaluate methods and tools available to manage nitrogen. Several methods, soil testing, plant tissue testing, spectral response, fertilizer placement and timing and vegetative indexes (leaf area index, and NDVI) through drones, handheld sensors, and satellite imagery were reviewed on the subject of user-friendly and effectiveness towards NUE. No single method was found sufficient to counter the nitrogen loss. Some methods were found time consuming and unsynchronized with N uptake behavior of particular crop, for example, plant tissue testing. Use of precision agriculture tools, such as GreenSeeker, Holland Crop Circle, drone, and satellite imagery, were found better compared to conventional methods such as soil testing, but these tools can only be used when the crop is up. Therefore, N management is possible only through inseason N application methods. When 70% of the applied nitrogen is used by the crops within 25-30 days after planting, for example, corn and potatoes, it is required to apply major N rates through inseason approach and some N at planting using soil test reports. In conclusion, this article strongly advocates using two or more methods in combination when managing N.

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“…Corn produces taller plants at high plant population (Jonathan, et al, 2006). Soil moisture availability (Hussain et al, 1999), soil compaction, surface soil structure, and soil aggregation (Kladivko et al, 1986), fertilizer applications (Kapusta et al, 1996), and tillage system (Kladivko et al, 1986) also influence plant height of corn. In addition, plant height differs among corn cultivars (Rhoads and Stanley, 1973).…”

Section: Introductionmentioning

confidence: 99%

Comparison of Models in Assessing Relationship of Corn Yield with Plant Height Measured during Early- to Mid-Season

Yin¹,

Jaja²,

McClure³

et al. 2011

JAS

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Relationship of corn (Zea mays L.) yield with plant height measured during early-to mid-season may possess the potential to be used to develop algorithms for guiding variable-rate N applications within a field. This study evaluated the performance of the linear, quadratic, square root, logarithmic, and exponential models in assessing the relationship of corn yield with plant height measured at three growth stages and four cropping systems for three years. The determination coefficient (R 2 ) values of these five models were generally similar at each growth stage within each cropping system and year or within each cropping system on the three-year combined data. Our results suggest that all these models could be used to describe the relationship of corn yield with plant height during early-to mid-season under different cropping systems and weather conditions, but the linear model may be the preferred model because of its simplicity.

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Corn Yield is Equal in Conventional, Reduced, and No Tillage after 20 Years

Cited by 73 publications

References 24 publications

A meta-analysis of long-term effects of conservation agriculture on maize grain yield under rain-fed conditions

A meta-analysis of long-term effects of conservation agriculture on maize grain yield under rain-fed conditions

A Review of Methods to Improve Nitrogen Use Efficiency in Agriculture

Comparison of Models in Assessing Relationship of Corn Yield with Plant Height Measured during Early- to Mid-Season

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