THE EFFECT OF N AND P FERTILIZATION ON WINTER SURVIVAL OF WINTER WHEAT UNDER ZERO-TILLED AND CONVENTIONALLY TILLED MANAGEMENT

1984 ◽  
Vol 64 (2) ◽  
pp. 293-296 ◽  
Author(s):  
C. A. GRANT ◽  
E. H. STOBBE ◽  
G. J. RACZ
Keyword(s):  
Winter Wheat ◽  
Key Words ◽  
Nitrogen Fertilization ◽  
Winter Survival ◽  
Phosphorus Fertilization ◽  
Zero Tillage ◽  
P Fertilization ◽  
Nitrogen And Phosphorus ◽  
Nitrogen Phosphorus ◽  
Tilled Land

A preliminary field study was conducted to investigate the influence of fall applications of nitrogen and phosphorus on winter survival of winter wheat on zero-tilled and conventionally tilled land. Nitrogen fertilization tended to decrease winter survival while phosphorus fertilization tended to increase survival. A N-P interaction was observed, with the decrease in survival in response to added N being more evident in the absense of applied P. Balanced N-P fertilization may therefore result in highest winter survival in both conventionally tilled and zero-tilled winter wheat. Key words: Zero-tillage, winter survival, nitrogen, phosphorus, winter wheat

scholarly journals Yield and Nutritional Quality of Cabbage as Affected by Nitrogen and Phosphorus Fertilization

1970 ◽  
Vol 41 (1) ◽  
pp. 41-46
Author(s):  
KMF Haque ◽  
AA Jahangir ◽  
ME Haque ◽  
RK Mondal ◽  
MAA Jahan ◽  
...  
Keyword(s):  
Block Design ◽  
Growth Yield ◽  
Nutrient Content ◽  
Phosphorus Fertilization ◽  
Fertilizer Treatment ◽  
P Fertilization ◽  
Nitrogen And Phosphorus ◽  
Titrable Acidity ◽  
Nitrogen Phosphorus

An experiment was conducted in field condition to study the effect of nitrogen-phosphorus fertilization on growth, yield and nutrient content of cabbage. The experiment was laid out in randomize block design with three replications. The yield and yield components were maximized by N3P2 fertilizer treatment. Nutrient content of cabbage varied with fertilizer treatment. The maximum amount of reducing sugar, ascorbic acid, phosphorus were found at the highest rate of N - P fertilization whereas accumulation of titrable acidity, iron, calcium were maximum at the rate of N2P2 treatment. However pH, ash content were more or less same throughout the experiment. Bangladesh J. Sci. Ind. Res. 41(1-2), 41-46, 2006

scholarly journals Effect of Nitrogen and Phosphorus Fertilization on Growth in a Sweetgum Plantation in Southeastern Arkansas

1998 ◽  
Vol 22 (3) ◽  
pp. 163-168
Author(s):  
Yanfei Guo ◽  
Brian R. Lockhart ◽  
Tim T. Ku
Keyword(s):  
Nitrogen Fertilization ◽  
Volume Growth ◽  
Stem Volume ◽  
Phosphorus Fertilization ◽  
Nitrogen And Phosphorus ◽  
Crown Width ◽  
Loam Soil ◽  
The Mean ◽  
Crown Closure ◽  
Nitrogen Phosphorus

Abstract Effects of nitrogen and phosphorus fertilization (nitrogen only, phosphorus only, nitrogen + phosphorus, and no fertilizer) on the growth of a sweetgum (Liquidambar styraciflua L.) plantation were tested in a poorly drained Henry silt loam soil in southeastern Arkansas. The plantation was fertilized when 4 yr old. Nitrogen fertilization increased height, dbh, and stem volume growth 1 yr after the application, and the mean height, dbh, and stem volume were significantly greater for the trees with nitrogen fertilization than for the trees without nitrogen fertilization through 10 yr. Phosphorus alone did not affect tree growth. However, height growth was improved by the combination of nitrogen and phosphorus eight yr after fertilization. Nitrogen also increased crown width and length through the first 4 yr, but crown width and length were similar among treatments after crown closure occurred by 13 yr. South. J. Appl. For. 22(3):163-168.

Analysis of yield variability in winter wheat due to temporal variability, and nitrogen and phosphorus fertilization

2007 ◽  
Vol 53 (4) ◽  
pp. 435-442 ◽  
Author(s):  
Kefyalew Girma ◽  
Kyle W. Freeman ◽  
Roger Teal ◽  
Daryl B. Arnall ◽  
Brenda Tubana ◽  
...  
Keyword(s):  
Winter Wheat ◽  
Temporal Variability ◽  
Yield Variability ◽  
Phosphorus Fertilization ◽  
Nitrogen And Phosphorus

THE EFFECT OF FALL-APPLIED N AND P FERTILIZER AND TIMING OF N APPLICATION ON YIELD AND PROTEIN CONTENT OF WINTER WHEAT GROWN ON ZERO-TILLED LAND IN MANITOBA

1985 ◽  
Vol 65 (4) ◽  
pp. 621-628 ◽  
Author(s):  
C. A. GRANT ◽  
E. H. STOBBE ◽  
G. J. RACZ
Keyword(s):  
Winter Wheat ◽  
Protein Content ◽  
Protein Concentration ◽  
Field Studies ◽  
N Recovery ◽  
N Application ◽  
Time Of Application ◽  
P Fertilizer ◽  
Nitrogen Phosphorus ◽  
Tilled Land

Field studies were conducted to evaluate the effect of the rate and timing of N application and the amount of seed-placed P on grain yield and protein content of winter wheat grown on zero-tilled and conventionally tilled land in Manitoba. Yield increased with increasing amounts of fall-applied N and P. Yield, as affected by time of N application, decreased in the order: spring, freezeup, seeding, and applied on snow in winter. Split application of N resulted in yields comparable to that obtained with N applied at seeding. Protein concentration in grain decreased when small amounts of N led to large increases in dry matter but increased when sufficient quantities of N fertilizer were added to meet the requirements for both yield and protein. The amount of fertilizer N recovered in the grain did not differ with time of application in 1979–1980. However, in 1980–1981, N recovery was consistently higher with spring applications of N than with applications at any other time. Differences between the two seasons reflected the higher moisture availability for crop growth in 1980–1981 as compared to 1979–1980. Key words: Winter wheat, zero tillage, nitrogen, phosphorus, protein

Effects of Water and Fertilizer Managements on Yield, Nutrition Uptake of Rice and of Nitrogen and Phosphorus Loss of Runoff from Paddy Field

2012 ◽  
Vol 610-613 ◽  
pp. 1527-1532
Author(s):  
Dong Feng Huang ◽  
Ping Fan ◽  
Wei Hua Li ◽  
Li Min Wang ◽  
Xin Jian Lin ◽  
...  
Keyword(s):  
Nitrogen Fertilization ◽  
Paddy Field ◽  
Rice Plant ◽  
Dry Matter ◽  
Irrigation Treatment ◽  
Phosphorus Fertilization ◽  
Dry Matter Yield ◽  
Nitrogen And Phosphorus ◽  
Phosphorus Loss ◽  
Irrigation Optimization

On the condition of natural rainfall and through the measure method of field runoff plots, an field experiment with six water and fertilizer managements (i.e. none fertilization and routine irrigation, routine fertilization and routine irrigation, optimization fertilization and routine irrigation, increasing nitrogen fertilization and routine irrigation, increasing phosphorus fertilization and routine irrigation, optimization fertilization and optimization irrigation) in 3 years ( 6 stubbles of rice) was carried out to study the effects of water and fertilizer managements on yield, nutrition uptake of rice and loss of nitrogen and phosphorus by runoff from paddy field. The results show that, under the 6 water and fertilizer managements, the dry matter yield of rice is 11629 ~ 19709 kg hm-2 a-1, the uptake of nitrogen, phosphorus and potassium in rice plant are 90 ~ 174 kg•hm-2 a-1, 36 ~ 62 kg hm-2 a-1, 151 ~ 288 kg hm-2 a-1, respectively, and the loss of nitrogen and phosphorus by runoff from paddy field are 14.0 ~ 42.9 kg hm-2 a-1 and 0.244 ~ 0.559 kg hm-2•a-1, respectively. Moreover, the dry matter yield of rice, the uptake of nitrogen and potassium in rice plant and the loss of nitrogen by runoff from paddy field under the treatment of “increasing nitrogen fertilization and routine irrigation” are relative higher than others. And the rice yield and nutrient uptake of “optimization fertilization + optimization irrigation” treatment is equivalent with “routine fertilization + routine irrigation”, but nitrogen and phosphorus loss of surface runoff reduce obviously, and the irrigation water is saved by 900.5 m3 hm-2 a-1, synchronously. Thus, better economical and environmental benefit would be reached by the treatments of “optimization fertilization and optimization irrigation”.

scholarly journals Diagnostic leaf to evaluate the nutritional status of Jatropha

Revista CERES ◽  
2015 ◽  
Vol 62 (6) ◽  
pp. 607-613 ◽  
Author(s):  
Carlos Hissao Kurihara ◽  
Cesar José da Silva
Keyword(s):  
Nutritional Status ◽  
Analytical Determination ◽  
Phosphorus Fertilization ◽  
Nitrogen And Phosphorus ◽  
Nutrient Contents ◽  
Mature Leaves ◽  
Calcium And Magnesium ◽  
Nitrogen Phosphorus ◽  
Experimental Plots

ABSTRACT The analytical determination of nutrient levels in recently mature leaves in order to diagnose nutritional status is based on the fact that leaves are metabolically active and more sensitive to variation in nutrients of the soil. In most of cases, there is a direct well known between foliar content and the development and yield of the plant. However, for a more accurate interpretation, it is essential to establish the index leaf. There are few published studies about Jatropha with contrasting results. In order to establish the index leaf, in adult plants, the macronutrient levels were evaluated in samples collected in experimental plots, in which doses of nitrogen and phosphorus were applied, in two parts of the floral branches (in the top and in the middle thirds); and in three positions of leaves of the floral branch (between the 1st and 3rd, 6th and 8th, and 13th and 15th leaves below the inflorescence). The location of the leaf on the plant significantly affects nutrient contents. Nitrogen, phosphorus, potassium and sulfur tend to have higher concentration in young tissues. Calcium and magnesium showed higher levels in the basal leaves of floral branches. Samples collected in the top third of plants (between the 6th and 15th leaves of the floral branch) are more sensitive to variations of nitrogen and phosphorus fertilization. Therefore, we indicate the 6th to 15th leaves of the top third plants as index leaves estimate nutritional status of Jatropha.

Phosphorus fertilization in inbred and hybrid rice

1970 ◽  
Vol 19 (2) ◽  
pp. 181-187
Author(s):  
MR Islam ◽  
PK Saha ◽  
SK Zaman ◽  
MJ Uddin
Keyword(s):  
Grain Yield ◽  
Key Words ◽  
Hybrid Rice ◽  
Phosphorus Fertilization ◽  
Phosphorus Fertilizer ◽  
Yield Difference ◽  
P Balance ◽  
Rice Genotypes ◽  
Boro Rice

Five phosphorus rates (0, 5, 10, 20 and 30 kg P/ha) were tested with four rice genotypes in Boro (BRRI dhan36, BRRI dhan45, EH1 and EH2) and T. Aman (BRRI dhan30, BRRI dhan49, EH1 and EH2) season. Phosphorus rates did not influence grain yield irrespective of varieties in T. Aman season while in Boro season P response was observed among the P rates. Application of P @ 10 kg/ha significantly increased the grain yield. But when P was applied @ 20 and 30 kg P/ha, the grain yield difference was not significant. The optimum and economic rate of P for T. Aman was 20 kg P/ha but in Boro rice the optimum and economic doses of P were 22 and 30 kg/ha, respectively. Hybrid entries (EH1 and EH2) used P more efficiently than inbred varieties. A negative P balance was observed up to 10 kg P/ha. Key words: Response; Phosphorus fertilizer; Inbred; Hybrid rice DOI: http://dx.doi.org/10.3329/dujbs.v19i2.8962 DUJBS 2010; 19(2): 181-187

Effects of Nitrogen Fertilization on Seed-setting Characteristics of Spike and Grain Yield in Winter Wheat under Waterlogging at Booting Stage

2011 ◽  
Vol 37 (10) ◽  
pp. 1888-1896
Author(s):  
Wen-Ming WU ◽  
Jin-Cai LI ◽  
Hong-Jian CHEN ◽  
Feng-Zhen WEI ◽  
Shi-Ji WANG
Keyword(s):  
Winter Wheat ◽  
Grain Yield ◽  
Nitrogen Fertilization ◽  
Seed Setting ◽  
Booting Stage
Sign in / Sign up

Export Citation Format

Share Document