YIELD RESPONSE OF CONQUEST BARLEY AS AFFECTED BY NITROGEN FERTILIZER AND SOIL TESTS FOR AMMONIUM- AND NITRATE-NITROGEN

1973 ◽  
Vol 53 (2) ◽  
pp. 163-168 ◽  
Author(s):  
W. F. NUTTALL
Keyword(s):  
Nitrogen Fertilizer ◽  
Nitrate Nitrogen ◽  
Climatic Factors ◽  
Phosphate Fertilizer ◽  
Nitrogen Fertilizers ◽  
Yield Response ◽  
Regression Analyses ◽  
Soil Tests ◽  
Quadratic Equations ◽  
Fertilizer Rates

Yield response of Conquest barley to nitrogen fertilizer applied at 22, 45, 67, and 134 kg/ha with and without 20 kg P/ha were significantly related by regression analyses to ammonium- and to nitrate-nitrogen in soils of northeastern Saskatchewan. Both linear and quadratic equations obtained from the regression analyses were used to develop tables estimating yield response of barley related to nitrogen fertilizer rates and soil tests for ammonium- and nitrate-nitrogen. The results indicated that a greater response to nitrogen fertilizer occurred with a given amount of ammonium- plus nitrate-nitrogen than with the same amount of nitrate-nitrogen alone. Phosphate fertilizer also significantly increased yield response to nitrogen fertilizers. Confidence intervals showed that wide variation could be expected in yield response to nitrogen fertilizers. Variation is attributed to differences in soil type, soil moisture, and climatic factors among experimental sites.

Nitrogen fertilizer and wheat in a semi-arid environment. 2. Climatic factors affecting response

1968 ◽  
Vol 8 (31) ◽  
pp. 223 ◽  
Author(s):  
JS Russell
Keyword(s):  
Grain Yield ◽  
Nitrogen Fertilizer ◽  
Climatic Factors ◽  
Yield Response ◽  
Straw Yield ◽  
Growing Period ◽  
Positive Effects ◽  
Nitrogen Yield ◽  
Grain Nitrogen ◽  
Applied Nitrogen

The response of Gabo wheat to nitrogen fertilizer at 52 sites in the wheat growing areas of South Australia during 1956-61 was examined in relation to climatic factors by a stepwise multiple regression analysis using a computer. The ten dependent variables were the linear and quadratic coefficients obtained by fitting orthogonal polynomials to response curves of various parameters (grain yield, grain + straw yield, harvest index, grain nitrogen percentage, and grain nitrogen yield) to applied nitrogen at each of the 52 sites. The 23 independent variables were the amounts of rainfall and evaporation during the growing period, maximum and minimum temperatures and estimates of high temperature stress during spring and amount of rainfall immediately after sowing at each site. The climatic variables examined explained 46.5, 64.3, and 64.3 per cent of the variation in the response to nitrogen fertilizer of grain yield, grain + straw yield, and grain nitrogen yield respectively. The positive effects of increasing amounts of winter rainfall on yield response to applied nitrogen were marked. On the other hand, the negative effects of high maximum temperatures in the latter part of the growing period, particularly during October, on yield response were also evident.

scholarly journals FORMATION OF PRODUCTIVITY OF SUNFLOWER HYBRIDS DEPENDING ON THE LEVEL OF FERTILIZATION AND HUMIDITY CONDITIONS

2020 ◽  
pp. 208-220
Author(s):  
Viktor Mazur ◽  
Ihor Didur ◽  
Viacheslav Tsyhanskyi ◽  
Smiylo Malamaura
Keyword(s):  
Nitrogen Fertilizer ◽  
Oil Content ◽  
Maximum Yield ◽  
Field Research ◽  
Nitrogen Fertilizers ◽  
Yield Potential ◽  
The European Union ◽  
Comparative Performance ◽  
Moisture Conditions ◽  
Fertilizer Rates

Currently, there is a significant gap between the production and consumption of vegetable oils in Ukraine, as a significant part of them is exported to the European Union. Therefore, in order to quantify the comparative performance of different sunflower hybrids under the influence of different moisture conditions and nitrogen fertilizer rates, this study was conducted. The studied variants included three hybrids of sunflower Hysun 33, Hysun 38 and Pioneer-64A93, five rates of nitrogen fertilizers (0, 60, 120, 180, 240 kg of nitrogen per 1 ha ), arranged randomly in quadruplicate. Field research was conducted for two years under three different conditions of moisture (insufficient, unstable and sufficient) in the research areas of Vinnytsia National Agrarian University. The results of the study showed that the productivity of sunflower hybrids varied greatly in response to the application of nitrogen fertilizers and different humidification conditions. The maximum seed yield of 3,177 t / ha was obtained under conditions of sufficient moisture. Among the studied hybrids, the hybrid Hysun 38, surpassed the other two hybrids, providing a yield of 3.083 t / ha and a seed oil content of 41%. There was an increase in the yield of hybrids with increasing rates of nitrogen fertilizers, and the maximum yield was obtained by applying 180 kg / ha of nitrogen in dr. Studies have shown that the yield potential of hybrid Hysun 38 can be fully used by applying nitrogen fertilizers at a rate of 180 kg / ha in conditions of insufficient moisture. Higher nitrogen levels contributed to the significant formation of vegetative mass, thus balancing in favor of reproductive growth. Achieving a yield plateau with 180 kg / ha of nitrogen fertilizers means that an additional dose of nitrogen fertilizers did not contribute to further yield growth. The presence of a strong correlation between the yield of hybrids and nitrogen norms indicates that the yield depends on the presence of a sufficient amount of nitrogen in the soil. The highest yield was obtained by hybrid Hysun 38 - 3,662 t / ha with the introduction of 180 kg / ha of nitrogen. The oil content in the seeds varied significantly depending on different moisture conditions, hybrids and nitrogen fertilizer rates. The maximum oil content of 42.8% was obtained in conditions of sufficient moisture, in conditions of unstable - 40.9% and in conditions of insufficient - 40.4%

Wheat yields and indices of available soil nitrogen in Southern NSW - A preliminary evaluation

1971 ◽  
Vol 11 (50) ◽  
pp. 295 ◽  
Author(s):  
RR Storrier ◽  
AT Hanly ◽  
TB Spence ◽  
AN Smith
Keyword(s):  
Soil Nitrogen ◽  
Nitrogen Fertilizer ◽  
Nitrate Nitrogen ◽  
New South ◽  
Water Soluble ◽  
Soluble Nitrogen ◽  
Preliminary Evaluation ◽  
Regression Analyses ◽  
South Wales ◽  
Fertilizer Requirement

Linear regression analyses were used to evaluate the usefulness of a number of measures of the available soil nitrogen in accounting for the variability in wheat yields under field conditions in southern New South Wales. Single soil tests, such as total mineral nitrogen in the surface sample (0-10 cm depth), could account for only 38 and 18.5 per cent of the variation in yield at flowering and harvest respectively. However, the Use of bilinear regression involving boiling water soluble nitrogen in the surface horizon and nitrate-nitrogen in the sub-soil (10-30 cm depth) accounted for 64 and 36 per cent of the variation in yield at flowering and harvest respectively. The use of these tests to predict the nitrogen fertilizer requirement of wheat will necessitate the measure ment of climatic, cultural and edaphic factors as well as response to nitrogen fertilizer.

Some observations on the influence of nitrogen fertilizer applied at seeding on the nitrogen content of the wheat grain

1964 ◽  
Vol 4 (15) ◽  
pp. 345 ◽  
Author(s):  
JS Russell
Keyword(s):  
Nitrogen Content ◽  
Nitrogen Fertilizer ◽  
Climatic Factors ◽  
Yield Response ◽  
Wheat Grain ◽  
Nitrogen Yield ◽  
Grain Nitrogen ◽  
Nitrogen Percentage

The effect of nitrogen fertilizer applied at seeding on the nitrogen content of wheat grain was studied in 63 experiments during the six seasons 1956-1961. The overall effect of fertilizer was to increase grain nitrogen percentage, but there were situations where no change and even decreases in grain nitrogen percentage were found. The magnitude of the changes due to nitrogen fertilizer was small in relation to change brought about by climatic factors. Both the change in nitrogen content and nitrogen yield from applied fertilizer showed a relation to the nitrogen content of grain from unfertilized plants. Significant differences between varieties were found for nitrogen yield response but not for nitrogen content response.

Nitrogen and phosphorus requirements of wheat sown by minimum tillage into rice stubble and the effects of rice stubble treatment

1979 ◽  
Vol 19 (99) ◽  
pp. 488 ◽  
Author(s):  
BS Dear ◽  
DJ McDonald ◽  
G Falconer
Keyword(s):  
Nitrogen Fertilizer ◽  
Significant Rise ◽  
Yield Response ◽  
Nitrogen And Phosphorus ◽  
Single Superphosphate ◽  
Minimum Tillage ◽  
Protein Levels ◽  
Highly Correlated ◽  
Yield Responses ◽  
Fertilizer Rates

Egret wheat was sown into rice stubble using a minimum cultivation technique called seedavation. Nitrogen was surface applied as sulphate of ammonia in 1974 and ammonium nitrate in 1975 at 0,60 and 120 kg N ha-1. Phosphorus as single superphosphate was drilled with the seed at 0 and 17.5 kg P ha-1. The effects of burning, incorporating and removing rice stubble were compared. Large grain yield responses to nitrogen were achieved with yields up to 5 t ha-1 despite the use of minimum tillage. Tiller numbers were highly correlated with yield. No yield response to phosphorus was obtained. Low protein levels (less than 10%) suitable for biscuit wheat were obtained even at the high nitrogen fertilizer rates. The effect of stubble treatment varied between years; in 1974 it had no effect on yield; however, in 1975 removing or incorporating stubble reduced yields compared with burning the stubble. These results indicate that in rice growing areas a significant rise in wheat yields can be achieved through the use of higher nitrogen fertilizer rates.

scholarly journals Respon Hasil Jagung Manis Terhadap Takaran Pupuk Fosfat pada Andisol Lembang

2018 ◽  
Vol 1 (2) ◽  
pp. 13
Author(s):  
Endang Sufiadi
Keyword(s):  
Sweet Corn ◽  
Block Design ◽  
Maximum Yield ◽  
Phosphate Fertilizer ◽  
Yield Response ◽  
Corn Yield ◽  
West Java ◽  
Potential Yield ◽  
Randomized Block Design ◽  
Fertilizer Rates

An experiment was conducted at experimental field of BBHAT, Cikole Lembang, West Java District, West Java, on elevation of 1.250 m above sea level, from July to October 2008. The objective of this experiment was to study the Yield Response of Sweet Corn on the Phosphate Fertilizer Rates in Lembang Andisol. The design used was a Randomized Block Design with five treatments and five replication of A = without phosphate fertilizer, B=75 kg ha-1 P2O5, C= 150 kg ha-1 P2O5, D=225 kgha-1 P=O5, E=300 kg ha-1 P2O5. The result of experiment showed that yield response of sweet corn on the phosphate rate in Lembang Andisol is quadratic form. Maximum yield of corn cob with husk per plant of 575,24 grams per plant was obtained at the optimum phosphate rate of 190,7 kg ha-1 P2O5. This corn yield is equivalent to 22 tons ha-1 higher than the potential yield of these sweet corn variety. Soil-available P increased with increasing rates of phosphate fertilizer, reaches a very high criteria.

APPLICATION OF NITROGEN FERTILIZERS BY FERTIGATION AT SEABUCKTHORN NURSERY

2021 ◽  
Vol 16 (3) ◽  
pp. 48-52
Author(s):  
Tatyana Nelyubova ◽  
Marina Ryzhova ◽  
Aleksandr Kanarsky
Keyword(s):  
Nitrogen Fertilizer ◽  
Nitrate Nitrogen ◽  
Steppe Zone ◽  
Nitrogen Fertilizers ◽  
Forest Steppe ◽  
Marketable Yield ◽  
One Year ◽  
High Level ◽  
Positive Effect

The effect of fertilizers application by the method of fertigation with drip irrigation during seabuckthorn growing in the nursery was estimated. The research has been carried out in the nursery field, in the forest-steppe zone of Altai Krai in 2019-2020. The soil on the experimental plot is gray-forest, reaction of the medium pH 5.8-5.9. The content of nitrate nitrogen was in the range of 7.8-9.8 mg/kg in the control variant; after fertilization, these values rose to 87.9 mg/kg. Nitrate nitrogen was determined by the ion-selective method. The soil at a high level is provided with mobile phosphorus 342-453 mg/kg and potassium 181-355 mg/kg - determined according to Chirikov. The research object – is one-year-old seabuckthorn trees of Altaiskaya cultivar. Urea was applied as nitrogen fertilizer in three rates of the active ingredient (40, 60, and 80 kg/ha). Double superphosphate (30 kg/ha) and potassium chloride (30 kg/ha) were used as the background. The soil moisture level was maintained at 70-80% of the LWC. The effectiveness of fertilizers was assessed by the marketable yield of two-year-old seedlings and their quality indicators. The measurements were carried out in the fall, after excavation. According to the values of the parameters of the aboveground part, the dose of nitrogen fertilizer of 60 kg/ha turned out to be the best option. At the same time, the seedlings had a height of 89.5 cm, the number of branches was 4.4 pcs., The diameter of the trunk was 8.4 cm, which is 15.4 cm, 0.5 pcs. and 1.3 mm above the control. The yield of seedlings of the first commercial grade in the experiment averaged 164 pieces. (82.8%), the maximum is marked on the N60P30K30 variant 190 pcs. (93.8%). Control without the use of fertilizers in all respects is significantly inferior to options with fertilizers. Thus, the use of nitrogen fertilizers has a positive effect on the quality of the seabuckthorn planting material. As a result, the utilization of nitrogen fertilizers has a positive effect on the quality of the seabuckthorn plant material, while higher concentrations become unprofitable compared to low ones due to high costs and insignificant differences in the quality of trees

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