DTPA‐extractable zinc threshold for wheat grain yield response to zinc fertilization in Mollisols

2021 ◽  
Author(s):  
Nicolás Martínez Cuesta ◽  
Walter Carciochi ◽  
Fernando Salvagiotti ◽  
Hernán Sainz Rozas ◽  
Nicolás Wyngaard ◽  
...  
Keyword(s):  
Grain Yield ◽  
Yield Response ◽  
Wheat Grain ◽  
Zinc Fertilization

scholarly journals Winter Wheat Grain Yield Response to Fungicide Application is Influenced by Cultivar and Rainfall

2019 ◽  
Vol 35 (1) ◽  
pp. 63-70
Author(s):  
Emmanuel Byamukama ◽  
Shaukat Ali ◽  
Jonathan Kleinjan ◽  
Dalitso N. Yabwalo ◽  
Christopher Graham ◽  
...  
Keyword(s):  
Winter Wheat ◽  
Grain Yield ◽  
Yield Response ◽  
Wheat Grain ◽  
Fungicide Application

Wheat grain-yield response to lime application: relationships with soil pH and aluminium in Western Australia

2019 ◽  
Vol 70 (4) ◽  
pp. 295 ◽  
Author(s):  
Geoffrey Anderson ◽  
Richard Bell
Keyword(s):  
Grain Yield ◽  
Soil Ph ◽  
Relative Yield ◽  
Yield Response ◽  
Soil Test ◽  
Wheat Grain ◽  
Soil Layers ◽  
Lime Application ◽  
Definition Of ◽  
The Relationship

Soil acidity, or more specifically aluminium (Al) toxicity, is a major soil limitation to growing wheat (Triticum aestivum L.) in the south of Western Australia (SWA). Application of calcium carbonate (lime) is used to correct Al toxicity by increasing soil pH and decreasing soluble soil Al3+. Soil testing using a 0.01 m calcium chloride (CaCl2) solution can measure both soil pH (pHCaCl2) and soil Al (AlCaCl2) for recommending rates of lime application. This study aimed to determine which combination of soil pHCaCl2 or soil AlCaCl2 and sampling depth best explains the wheat grain-yield increase (response) when lime is applied. A database of 31 historical lime experiments was compiled with wheat as the indicator crop. Wheat response to lime application was presented as relative yield percentage (grain yield for the no-lime treatment divided by the highest grain yield achieved for lime treatments × 100). Soil sampling depths were 0–10, 10–20 and 20–30 cm and various combinations of these depths. For evidence that lime application had altered soil pHCaCl2, we selected the change in the lowest pHCaCl2 value of the three soil layers to a depth of 30 cm as a result of the highest lime application (ΔpHmin). When ΔpHmin <0.3, the lack of grain-yield response to lime suggested that insufficient lime had leached into the 10–30 cm soil layer to remove the soil Al limitation for these observations. Also, under high fallow-season rainfall (228 and 320 mm) and low growing-season rainfall (GSR) (<140 mm), relative yield was lower for the measured level of soil AlCaCl2 than in the other observations. Hence, after excluding observations with ΔpHmin <0.3 or GSR <140 mm (n = 19), soil AlCaCl2 provided a better definition of the relationship between soil test and wheat response (r2 range 0.48–0.74) than did soil pHCaCl2 (highest r2 0.38). The critical value (defined at relative yield = 90%) ranged from 2.5 mg Al kg–1 (for soil Al calculated according to root distribution by depth within the 0–30 cm layer) to 4.5 mg Al kg–1 (calculated from the highest AlCaCl2 value from the three soil layers to 30 cm depth). We conclude that 0.01 m CaCl2 extractable Al in the 0–30 cm layer will give the more accurate definition of the relationship between soil test and wheat response in SWA.

Winter wheat grain yield response to water and nitrogen on the north american great plains

1988 ◽  
Vol 44 (2) ◽  
pp. 141-149 ◽  
Author(s):  
D.J. Major ◽  
B.L. Blad ◽  
A. Bauer ◽  
J.L. Hatfield ◽  
K.G. Hubbard ◽  
...  
Keyword(s):  
Winter Wheat ◽  
Grain Yield ◽  
Great Plains ◽  
North American ◽  
Yield Response ◽  
Wheat Grain ◽  
The North ◽  
Response To Water

scholarly journals The Yield Response of Wheat to Zinc Fertilization

2013 ◽  
Vol 9 (1-2) ◽  
pp. 15-25
Author(s):  
KH Talukder ◽  
IU Ahmed ◽  
MS Islam ◽  
M Asaduzzaman ◽  
MD Hossain
Keyword(s):  
Grain Yield ◽  
Agricultural Research ◽  
Yield Response ◽  
Research Station ◽  
Agricultural Research Station ◽  
Floodplain Soils ◽  
Zinc Fertilization ◽  
Crop Research

The experiment on wheat to zinc fertilization was carried out at the Regional Agricultural Research Station, Agricultural Research Sub-Station, and Special Crop Research Stations of BARI and at Farmer’s field. The grain yield was increased with increasing application of zinc upto 6 kg/ha but beyond that the level the yield was declined. The highest yield (3.87t/ha) was obtained in 6 kg Zn/ha under Amnura series as compare to Nachole and Lauta series. The lowest yield was obtained in Nachole series (3.07 t Zn/ha) under Deep Grey Terrace Soil. In Gangachara too, the grain yield of wheat was increased with increasing levels of zinc upto 6 kg Zn/ha beyond that it was declined. The highest yield (5.58t/ha) was obtained in 6 kg Zn/ha under Gangachara series and compare to Kaunia and Sonatola series. The lowest yield was obtained (3.92t/ha) in Kaunia series under Grey Floodplain Soils.The grain yield of wheat was significantly increased upto 12 kg Zn/ha in Calcarious Dark Grey Floodplain and Calcarious Brown Floodplain Soils and the order of increase was Zn12>Zn9>Zn6 >Zn3>Zn0. The highest yield (5.50 t/ha) was recorded in 12 kg Zn/ha. The order of the yield was Ishardi 5.50 t/ha > Sara5.47 t /ha> Gopalpur 5.13 t /ha>Darsona 2.91t/ha was recorded under Calcarious Dark Grey Floodplain and Calcareous Brown Floodplain Soils. DOI: http://dx.doi.org/10.3329/jsf.v9i1-2.14644 J. Sci. Foundation, 9(1&2): 15-25, June-December 2011

Wheat grain yield response to and translocation of foliar-applied phosphorus

2011 ◽  
Vol 62 (1) ◽  
pp. 58 ◽  
Author(s):  
T. M. McBeath ◽  
M. J. McLaughlin ◽  
S. R. Noack
Keyword(s):  
Grain Yield ◽  
Field Capacity ◽  
Growth Cycle ◽  
P Uptake ◽  
Yield Potential ◽  
Yield Response ◽  
Wheat Grain ◽  
P Concentration ◽  
Use Efficiency ◽  
P Supply

It is important to apply phosphorus (P) to the soil at the beginning of the crop growth cycle to provide essential P for early growth and to replace P exported in previous crops. With low rates of P added at sowing there may be sufficient P supply to grow crops to tillering, but in seasons of increased yield potential a top-up application of P may be required. Foliar P can be applied directly to the plant when required and in some cases have been shown to provide benefits for increasing P-use efficiency and the P concentration in grain. Wheat (Triticuum aestivum cv. Frame) was grown in two soils of marginal P status with soil moisture maintained at 80% of field capacity. Seven foliar P treatments labelled with 33P as a tracer were applied at Zadoks growth stage 39, at 1.65 kg P/ha with 120 L water/ha equivalent. Grain, chaff and shoots were harvested to measure yield and then digested to measure P concentrations and 33P activities. There was no crop response to top-up soil or foliar P on one soil, but on the other soil, foliar phosphoric acid plus adjuvant gave a 25% wheat grain yield response. The use of the tracing technique enabled measurement of the portioning of foliar P fertiliser between stem, chaff and grain. The most responsive treatment had the greatest amount of grain P uptake and the greatest partitioning of the foliar P fertiliser to grain.

scholarly journals Yield Response And Nitrogen Use Efficiency Of Wheat Under Different Doses And Split Application Of Nitrogen Fertilizer

1970 ◽  
Vol 36 (2) ◽  
pp. 231-240 ◽  
Author(s):  
M Ataur Rahman ◽  
MAZ Sarker ◽  
MF Amin ◽  
AHS Jahan ◽  
MM Akhter
Keyword(s):  
Grain Yield ◽  
Agricultural Research ◽  
N Uptake ◽  
Wheat Variety ◽  
Yield Response ◽  
Central Research ◽  
Wheat Grain ◽  
Total N ◽  
Land Preparation ◽  
Different Doses

A field experiment was conducted at the central research farm of Bangladesh Agricultural Research Institute, Gazipur for two consecutive years to verify the yield response of wheat variety Prodip to different doses and split applications of N fertilizer to determine appropriate N dose and application method for increasing NUE and grain yield of wheat. The treatments comprised of 12 combinations of three doses of nitrogen (80, 100, and 120 kg/ha) from urea, which were assigned in the main plots and four methods of N splitting viz., application of all N as basal; 2/3rd basal plus 1/3rd as top dress at crown root initiation (CR1) stage; 1/2 basal plus 1/2 as top dress at CR1 stage; and 1/3rd basal with 1/3rd as top dress at CR1 plus 1/3rd as top dress at 1st node stage which were tested in the sub plots. Higher yield was achieved from N rate of 120 kgiha applied as three equal splits of one-third as basal during final land preparation, one-third as top dressing during CR1 and the rest one-third top dressing at first node stage. The yield advantage of wheat due to N treatments was attributed to higher thousand grain weight and spikes/m2. Nitrogen content in wheat grain and straw was not affected significantly by different N treatment and their combinations, whereas plant N uptake was significantly influenced by N rate and N splitting and also due to the interaction of N rate and N splitting. Total N uptake was maximum under N rate of 120 kg/ha applied as three equal splits as 1/3rd basal with 1/3rd as top dress at CR1 plus 1/3rd as top dress at 1st node stage. Split applications of sub-optimal dose of N (80 kg/ha) resulted in negative gain in apparent NUE, but split applications, especially three split applications (1/3rd basal, 1/3rd at CR1, and 1/3rd at 1st node stage) of higher dose of N (100 and 120 kg/ha) resulted in positive gain in apparent NUE. Keywords: Wheat grain yield; nitrogen management; N uptake and NUE DOI: http://dx.doi.org/10.3329/bjar.v36i2.9249 BJAR 2011; 36(2): 231-240

Nitrogen content of wheat grain as as indication of potential yield response to nitrogen fertilizer

1963 ◽  
Vol 3 (11) ◽  
pp. 319 ◽  
Author(s):  
JS Russell
Keyword(s):  
Grain Yield ◽  
Nitrogen Content ◽  
Nitrogen Fertilizer ◽  
Cultural Practices ◽  
South Australia ◽  
Yield Response ◽  
Regression Equations ◽  
Wheat Grain ◽  
Potential Yield ◽  
Grain Nitrogen

Examination of results from a large number of experiments in the wheat growing areas of South Australia has shown a relation between grain yield response to nitrogen fertilizer and both grain nitrogen percentage and the ratio. (Yield of grain)/(Amount of nitrogen in grain and straw) of corresponding unfertilized wheat plants. With Gabo, large yield responses to nitrogen fertilizer were associated with grain nitrogen percentages of less than 2.0 per cent N (9.9 per cent protein). Above 2.3 per cent N (11.3 per cent protein) positive responses to nitrogen were small and some negative responses were found. Similar overall trend were shorn by Insignia 49, Sabre and Quadrat. Exponential regression equations were calculated for Gabo allowing prediction of grain yield response at rates up to 46 lb fertilizer N an acre under conditions which result in grain protein contents of 7.5 to 16 per cent. Most profitable rates of nitrogen fertilizer application were also calculated for several different fertilizer-grain price levels. Possible value of the nitrogen content of wheat grain in the selection of regions, soil types, and cultural practices where nitrogen fertilizer may be used is discussed.

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