Urea-N uptake by dasheen (Colocasia esculenta L. Schott) in relation to the fertilizer placement method

A 3-yr study was conducted in eastern Wyoming from 1995 to 1997 to evaluate the effect of fertilizer placement on jointed goatgrass competitiveness with winter wheat. Fertilizer placement methods consisted of applying 45 kg/ha of nitrogen (50% as urea and 50% as ammonium nitrate) in a deep band 5 cm below and 2.5 cm to the side of the wheat row, broadcasting on the soil surface, or injecting fertilizer by spoke wheel 10 cm deep and 5 cm to the side of the wheat row. Neither fertilizer placement nor jointed goatgrass presence affected winter wheat stand. Wheat yield reductions from jointed goatgrass competition were 7 and 10% higher with the broadcast than deep-band or spoke-wheel injection methods, respectively. Wheat spikes/plant, seeds/spike, 200-seed weight, and plant height were not influenced by fertilizer placement; however, the presence of 35 jointed goatgrass plants/m2reduced spikes/plant 21%, seeds/spike 12%, and 200-seed weight 6%. Jointed goatgrass populations were not influenced by fertilizer placement method; however, the number of spikes/plant was reduced 8 and 10%, joints/spike 3%, and biomass 15 and 21% by deep band or spoke wheel fertilizer placement.

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Organically Fertilized Onions (Allium cepaL.): Effects of the Fertilizer Placement Method on Quercetin Content and Soil Nitrogen Dynamics

Journal of Agricultural and Food Chemistry ◽

10.1021/jf071813a ◽

2008 ◽

Vol 56 (2) ◽

pp. 361-367 ◽

Cited By ~ 16

Author(s):

Lars M. Mogren ◽

Siri Caspersen ◽

Marie E. Olsson ◽

Ulla E. Gertsson

Keyword(s):

Soil Nitrogen ◽

Nitrogen Dynamics ◽

Fertilizer Placement ◽

Placement Method ◽

Soil Nitrogen Dynamics

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Fertilizer Placement Effects on Soil Nitrogen and Use by Drip-irrigated and Plastic-mulched Tomatoes

HortScience ◽

10.21273/hortsci.25.7.767 ◽

1990 ◽

Vol 25 (7) ◽

pp. 767-769 ◽

Cited By ~ 4

Author(s):

Wilton P. Cook ◽

Douglas C. Sanders

Keyword(s):

Soil Moisture ◽

N Uptake ◽

Fruit Size ◽

Infiltration Rate ◽

Moisture Level ◽

Plastic Mulch ◽

Fertilizer Placement ◽

Total N ◽

Soil Moisture Level ◽

N Concentration

The effects of fertilizer placement and soil moisture level on soil N movement, uptake, and use by tomato plants (Lycopersicon esculentum Mill) grown with drip irrigation and plastic mulch were evaluated at two locations on two types of sandy soils. Broadcast or band fertilizer placement had no effect on fruit size, fruit number, or total yield. Fruit size was increased at one location, and the incidence of blossom-end rot was decreased by increased frequency of irrigation. Nitrate-N distribution within the bed was not affected by initial N placement. In the soil with a rapid infiltration rate, NO3-N levels in the center of the bed were always low, with highest concentration observed in the areas of the bed most distant from the drip tube. In the soil with the slower infiltration rate, NO3-N concentrations were more uniform throughout the bed, with highest concentrations in the bed center: Increasing soil moisture levels (–20 kPa vs. –30 kPa) resulted in increased leaching and reduced NO3-N concentration throughout the bed. Foliage N concentration was not affected by N placement, but decreased seasonally. Total N uptake by the above-ground portion of the plants was not affected by fertilizer placement or soil moisture level.

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Management of nitrogen and phosphorus fertilizer in no-till flax

Canadian Journal of Plant Science ◽

10.4141/p02-136 ◽

2003 ◽

Vol 83 (4) ◽

pp. 681-688 ◽

Cited By ~ 8

Author(s):

G. Lafond ◽

C. Grant ◽

A. Johnston ◽

D. McAndrew ◽

W. May

Keyword(s):

Seed Yield ◽

Seed Oil ◽

Seed Quality ◽

N Uptake ◽

P Uptake ◽

Fertilizer Placement ◽

Management Options ◽

Crop Establishment ◽

Oil Concentration ◽

P Placement

The major flax-growing areas of Canada coincide with areas where large shifts towards conservation tillage have occurred. These shifts have also brought about major changes in the way fertilizer is applied. The objective of this study was to determine the combination of nitrogen fertilizer form and N and P fertilizer placement methods that can increase N and P uptake, seed yield and seed oil concentration and composition in flax. The study was conducted at four locations covering the flax-growing areas over a 3-yr period. Three fertilizer forms, ammonium nitrate (AN), ammonium sulphate (AS) and urea were compared using different placement methods, pre-plant band (Pp) or side-band (Sb) in combination with monoammonium phosphate in either a Pp, Sb or seed-placed (Sp) position. Plant uptake of N and P was measured at 7, 14, 21 and 28 d after crop emergence and at the start of flowering. Other variables collected included crop establishment, crop yield and seed oil concentration and composition. AS resulted in the highest N uptake followed by AN then urea. As well, AS in the Sb showed higher N uptake than when applied Pp. The largest uptake of P was observed on days 7, 14 and 21 when AS and P were placed together in an Sb position. Crop establishment was adversely affected by urea and least by AN and AS, indicating that adequate seed-fertilizer separation between urea and flax seed is critical to minimizing reductions in plant stands. N form and placement, and P placement had no effect on seed oil concentration and composition in this study. Seed yield was improved marginally, overall, with the addition of P, while changes in N and P placement had no overall yield benefits. Treatments that resulted in improved N and P uptake in the first 21 d after crop emergence did not result in improved seed yields. When site × year interactions were investigated, 2 of 12 site years showed better yields when N and P were placed together in the Sb position. Based on the results of this study, we conclude that flax growers have many agronomically acceptable N and P management options available. Key words: Linum usitatissimum L., fertilizer placement, fertilizer form, nutrient uptake, seed yield, seed quality, oil quantity, urease inhibitor, Agrotain™

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Potential Phosphorus Export in Snowmelt as Influenced by Fertilizer Placement Method in the Canadian Prairies

Journal of Environmental Quality ◽

10.2134/jeq2018.07.0276 ◽

2019 ◽

Vol 48 (3) ◽

pp. 586-593 ◽

Cited By ~ 1

Author(s):

Jordan T. Wiens ◽

Barbara J. Cade-Menun ◽

Blake Weiseth ◽

Jeff J. Schoenau

Keyword(s):

Fertilizer Placement ◽

Canadian Prairies ◽

Placement Method ◽

Phosphorus Export

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Urea Fertilizer Placement Impacts on Corn Growth and Nitrogen Utilization in a Poorly-Drained Claypan Soil

Journal of Agricultural Science ◽

10.5539/jas.v9n1p28 ◽

2016 ◽

Vol 9 (1) ◽

pp. 28 ◽

Cited By ~ 2

Author(s):

Frank E. Johnson II ◽

Kelly A. Nelson ◽

Peter P. Motavalli

Keyword(s):

N Uptake ◽

Nitrification Inhibitor ◽

Field Trials ◽

Climatic Conditions ◽

Fertilizer Placement ◽

N Loss ◽

Urea Fertilizer ◽

Grain Yields ◽

Claypan Soil ◽

The Impact

Practices to increase nitrogen (N) use efficiency (NUE) include selecting appropriate N fertilizer sources and application methods, but minimal research has focused on these practices in poorly-drained claypan soils which are prone to N loss. This research assessed the impact of different urea fertilizer placement practices on corn (Zea mays L.) production and N utilization in a poorly-drained claypan soil. Field trials were conducted in 2014 and 2015 in Missouri. Treatments consisted of pre-plant deep banding (20 cm) urea at 202 kg N ha-1 or urea plus a nitrification inhibitor (NI) (nitrapyrin) compared to pre-plant urea broadcast surface-applied or incorporated to a depth of 8 cm. In 2014, incorporating urea, deep banding urea, and deep banding urea plus NI had higher yields (> 10%) of corn compared to the control with grain yields ranging from 13.73 to 14.05 Mg ha-1. In 2015, grain yields were lower than in 2014, ranging from 4.1 to 7.9 Mg ha-1. Deep placing banded urea with a NI yielded an increase in grain yield up to 48% compared to the other treatments. Rainfall amounts were higher in 2015, which could have resulted in poorer root growth and greater N loss in deep banded treatments. In 2014, deep banding urea with a NI produced the highest NUE. Similar to NUE, silage tissue N concentrations in 2014 were greater with deep banded urea plus NI, while in 2015 silage tissue N concentrations were higher with surface applied urea. The results suggest that urea fertilizer incorporation including deep banding may improve corn grain production, N uptake, and NUE, but response was affected by climatic conditions. The addition of an NI may be an important safeguard when deep banding urea in years with excessive precipitation.

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EFFICIENCY OF DEEP FERTILIZER PLACEMENT IN MAIZE IN TERMS OF SUSTAINABLE DEVELOPMENT CRITERIA

Annals of the Polish Association of Agricultural and Agribusiness Economists ◽

10.5604/01.3001.0014.5768 ◽

2020 ◽

Vol XXII (4) ◽

pp. 105-115

Author(s):

Aleksandra Król-Badziak ◽

Jerzy Kozyra ◽

Mariusz Matyka

Keyword(s):

Field Experiments ◽

Sustainability Assessment ◽

Comparative Assessment ◽

Mineral Fertilizers ◽

Fertilizer Placement ◽

Yield Increase ◽

Placement Method ◽

Broadcast Application ◽

Expert Opinions ◽

The Face

Ensuring sustainable agricultural production technologies is becoming increasingly important in the face of the observed climate change and need to reduce the harmful environmental impact of agriculture. The aim of the study is a comparative assessment of the deep fertilizer placement method with surface broadcast application of fertilizers as regards overall sustainability. To reach this goal, based on the results of field experiments and expert opinions, the values of sustainability indicators (economic, environmental and social aspects) were determined. The AHP (analytical hierarchy process) method was applied to comparative assessment. The conducted analysis showed that economic, environmental and overall sustainability assessment are conditioned by productivity achieved. In the first year of the experiment, when the yield increase was not achieved, in terms of sustainability criteria considered, the surface broadcast application of fertilizers was determined to be preferred as compared to the deep fertilizer placement method. On the other hand, in the second year of research with yield increase, the practice with the deep application of mineral fertilizers resulted in a better performance than surface broadcast fertilization, while showing a similar overall performance in the case of natural fertilizers.

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Fertilization Rate and Placement Effects on Areca Palms Transplanted from Containers or a Field Nursery

Arboriculture & Urban Forestry ◽

10.48044/jauf.2012.022 ◽

2012 ◽

Vol 38 (4) ◽

pp. 146-150

Author(s):

Timothy Broschat ◽

Kimberly Moore

Keyword(s):

Fertilization Rate ◽

Potassium Deficiency ◽

Fertilizer Placement ◽

Placement Method ◽

Deficiency Symptoms ◽

Rate Effects ◽

Field Nursery ◽

Better Than

Areca palms (Dypsis lutescens [(H. Wendl.) Beentje and J. Dransf.]) were transplanted from containers or a field nursery and were treated with fertilizer placed at the bottom of the planting hole, incorporated into the backfill, or on the surface of the root ball to determine the effects of fertilizer placement at planting on palm growth and quality. Fertilizer was applied at 0, 250 g (20 g N), or 500 g (40 g N) per tree for each placement method to determine fertilization rate effects. Areca palms transplanted from containers grew best when fertilizer was incorporated into the backfill, but any fertilizer placement or rate was better than no fertilizer. When areca palms were transplanted from a field nursery, there was no consistently best fertilizer placement method. However, fertilized plants grew better and had less severe nitrogen and potassium deficiency symptoms than unfertilized palms. There was no benefit to higher fertilization rate for either container- or field-grown areca palms.

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Contribution of Nitrogen Fertilizer Placement to Weed Management in Spring Wheat (Triticum aestivum)

Weed Technology ◽

10.1017/s0890037x00044225 ◽

1998 ◽

Vol 12 (3) ◽

pp. 507-514 ◽

Cited By ~ 42

Author(s):

Kenneth J. Kirkland ◽

Hugh J. Beckie

Keyword(s):

Great Plains ◽

Weed Management ◽

N Uptake ◽

Growing Season ◽

Conventional Tillage ◽

Northern Great Plains ◽

Fertilizer Placement ◽

No Till ◽

Tillage System ◽

Weed Emergence

The contribution of nitrogen (N) fertilizer placement to management of annual weeds in spring wheat grown under two tillage systems was examined at sites located in three ecoregions of the northern Great Plains from 1994 to 1996. The effect of three different fertilizer placements on narrowleaf and broadleaf weed emergence, growth, and N uptake were determined in a no-till and a conventional tillage system. Fertilizer was broadcast, subsurface-banded in the spring prior to seeding, or side-banded at the time of seeding. Tillage system generally did not influence weed and crop response to fertilizer placement. Broadcast-applied fertilizer was more effective than banded fertilizer in promoting wild oat and broadleaf weed emergence and growth over the growing season. Weed densities, biomass, and N uptake measured early in the growing season averaged 20 to 40% less, and grain yield of wheat at maturity averaged 12% higher where fertilizer was side-banded compared to broadcast. In contrast, the addition of fertilizer, regardless of placement, was detrimental to green foxtail because of enhanced crop competitiveness. Banding fertilizer at recommended rates can be an effective cultural practice for managing weeds in no-till and conventional tillage wheat-cropping systems in semiarid to subhumid regions of the northern Great Plains, but it is not reliable when used as the sole method of weed management.

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