Effect of Ammonium and Nitrate Forms of Nitrogen and Restricted Water Supply on Growth and Nitrogen Uptake of Wheat

Spratt, E. D.; Gasser, J. K. R.

doi:10.4141/cjss70-037

Cited by 20 publications

(6 citation statements)

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“…The low precipitation and high eva])orative demand experienced during the ZGS45 to ZGS65 period severely restricted dry matter accumulation in Trials 6, 7, 12, and 13 (Table 3). Nitrogen accumulation in plants has been reported to follow a pattern similar to that of dry matter, only at a faster rate (Spratt and Gasser, 1970a). This is in agreement with results of the present study where on average 62% of final dry matter (Fig.…”

Section: Methodssupporting

confidence: 93%

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No‐Till Winter Wheat Dry Matter and Tissue Nitrogen Response to Nitrogen Fertilizer Form and Placement

Johnston

Fowler

1991

Agronomy Journal

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Expansion of winter wheat (Triticum aestil'um L.) production into the high winterkill risk regions of the Canadian prairies has been achieved by no-till seeding into standing stubble immediately after harvest of the previous crop. Seven field trials were conducted in Saskatchewan to evaluate the seasonal pattern of dry matter and N accumulation of no-till winter wheat. The fertilizer treatments included the currently recommended early (20 April) spring broadcast ammonium nitrate (AN) and early spring broadcast and surface band applied urea and urea-ammonium nitrate (UAN) solution. In four of the seven trials, late (12 May) AN and urea were also applied. Nitrogen fertilizer was applied at 0, 34, 67, 101, and 202 kg N ha-•. Mean maximum dry matter and N yields were established by Zadoks Growth Stage 65 (ZGS65) and ZGS45, respectively. Subsequent losses of both dry matter and N were observed under conditions of high evaporative demand and low precipitation. When rainfall was more favorable and N supply abundant, Nand dry matter yields increased through the growing season to harvest. Increased N rates increased N uptake and amplified plant-N and dry matter losses. Growing season environmental conditions and plantavailable-N levels also played an important role in determining the efficiency of N translocation to the seed. Early broadcast AN produced larger dry matter and N-yield responses than all other fertilizer treatments. While surface band applied urea showed no advantage over early broadcast urea, surface band applied UAN increased dry matter yield and N uptake over broadcast sprayed UAN. Average dry matter (N) yield-N response for early broadcast urea, surface band applied urea and surface band applied UAN treatments were 93 (89%) of those recorded for early broadcast AN. The broadcast sprayed UAN treatment dry matter and N yield-N responses were 81% of early broadcast AN. Compared with early broadcast AN and urea, late broadcast AN and urea produced lower dry matter yields and delayed N uptake. Average late broadcast AN and urea dry matter (N) yield-N responses were 63 (85%) of those recorded for early broadcast AN and urea. These observations indicate that differences in dry matter and N-yield responses for different N forms and placement methods are established early in the growing season and maintained through to maturity.

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Section: Methodssupporting

confidence: 93%

“…70 to 0.80 for dryland spring wheat. The translocation efficiency of spring wheat plants has been reported to decrease when subjecttd to water stress (Spratt and Gasser, 1970a).…”

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confidence: 99%

No‐Till Winter Wheat Dry Matter and Tissue Nitrogen Response to Nitrogen Fertilizer Form and Placement

Johnston

Fowler

1991

Agronomy Journal

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“…A balanced fertilization program provides a high-quality yield and it also increases the tolerance of plants to pathogen infections due to optimal nutrition (Engelhard, 1989). It has been stated by many authors that nitrogen fertilization has a considerable effect on the development of Fusarium foot rot in wheat (Daly, 1949;Tousson et al, 1960;Spratt and Gasser, 1970). The form of nitrogen is more important than its application dose on the disease development of many plants.…”

Section: Discussionmentioning

confidence: 99%

Effect of wheat cultivars, fertilizers, and fungicides on Fusarium foot rot disease of wheat

Akgül¹,

Erkiliç²

2016

Turk J Agric For

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Fusarium culmorum is a principal causal agent of root, crown, and foot rot disease in the wheat-growing areas of Turkey. The effects of different fertilization practices, fungicide sprays, and cultivar reactions of 12 wheat varieties were investigated for disease development in greenhouse conditions in 2006-2007. The fertilizers used in the experiments significantly reduced disease by 27.5%-54.7% compared to the nonfertilized control. The plants fertilized with calcium ammonium nitrate (26% N) or composite NPK (15%, 15%, 15%) showed fewer disease symptoms than those fertilized with NPK (20%, 20%, 0%) in the presowing applications. On the other hand, foot rot severity was lower with ammonium nitrate (33% N) than urea (46% N) when applied as a supplement in the 25th and 45th growth stages of the Zadoks scale. Furthermore, fungicide sprays and seed dressing treatments also decreased foot rot symptoms. Seed treatment with tebuconazole lowered disease severity in the subcrown internode compared to the control and it was overall the most effective fungicide with 47.8% efficacy. When plants were sprayed with fluquinconazole, tebuconazole, or epoxyconazole + carbendazim (two times at Zadoks growth stages 31 and 45), disease severity decreased by 96.3%, 93.9%, and 91.0%, respectively. In the cultivar reaction tests, no stable or considerable tolerance was observed in the 12 wheat varieties against foot rot. It may be concluded from this study that fertilizer forms and fungicide preference can play an important role where Fusarium foot rot is the main problem in wheat-growing areas.

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“…Several workers have reported that some crops prefer either NHn-or NO'-N (Swezey and Turner 1962;Viets 1965;Gasser 1965;Gasser and Hamlyn 1968;Spratt and Gasser 1970a (Reisenauer 1978 For personal use only. Osborne (1977) (Reisenauer 1978 (Robins and Domingo 1962;Dubetz and Wells 1965;Sosulski et al 1966;Campbell et al 1969;Campbell and Davidson 1979).…”

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confidence: 99%

COMPARISON OF THE EFFECT OF NO₃- AND NH₄-N ONGROWTH, YIELD, AND YIELD COMPONENTS OF MANITOU SPRING WHEAT AND CONQUEST BARLEY

Leyshon¹,

Campbell²,

Warder³

1980

Can. J. Plant Sci.

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Effect of Ammonium and Nitrate Forms of Nitrogen and Restricted Water Supply on Growth and Nitrogen Uptake of Wheat

Cited by 20 publications

References 5 publications

No‐Till Winter Wheat Dry Matter and Tissue Nitrogen Response to Nitrogen Fertilizer Form and Placement

No‐Till Winter Wheat Dry Matter and Tissue Nitrogen Response to Nitrogen Fertilizer Form and Placement

Effect of wheat cultivars, fertilizers, and fungicides on Fusarium foot rot disease of wheat

COMPARISON OF THE EFFECT OF NO₃- AND NH₄-N ONGROWTH, YIELD, AND YIELD COMPONENTS OF MANITOU SPRING WHEAT AND CONQUEST BARLEY

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Effect of Ammonium and Nitrate Forms of Nitrogen and Restricted Water Supply on Growth and Nitrogen Uptake of Wheat

Cited by 20 publications

References 5 publications

No‐Till Winter Wheat Dry Matter and Tissue Nitrogen Response to Nitrogen Fertilizer Form and Placement

No‐Till Winter Wheat Dry Matter and Tissue Nitrogen Response to Nitrogen Fertilizer Form and Placement

Effect of wheat cultivars, fertilizers, and fungicides on Fusarium foot rot disease of wheat

COMPARISON OF THE EFFECT OF NO3- AND NH4-N ONGROWTH, YIELD, AND YIELD COMPONENTS OF MANITOU SPRING WHEAT AND CONQUEST BARLEY

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COMPARISON OF THE EFFECT OF NO₃- AND NH₄-N ONGROWTH, YIELD, AND YIELD COMPONENTS OF MANITOU SPRING WHEAT AND CONQUEST BARLEY