Evaluation of dry-subsurface and wet-surface ammonium sulfate application for rice

1960 ◽  
Vol 13 (1) ◽  
pp. 47-54 ◽  
Author(s):  
Fathi Amer
Keyword(s):  
Ammonium Sulfate ◽  
Wet Surface ◽  
Sulfate Application

scholarly journals Effect of Ammonium Sulfate Application Levels on the Growth and Yield of IR-28 Rice

2021 ◽  
Vol 9 (3) ◽  
Author(s):  
Claurence Nkumbe Ndille ◽  
Michael Amos Ballah ◽  
Shafiqullah Safi ◽  
Isaac Mupeta
Keyword(s):  
Ammonium Sulfate ◽  
Nitrogen Fertilizer ◽  
Yield Components ◽  
Tiller Number ◽  
Spikelet Fertility ◽  
Significant Difference ◽  
Spikelets Per Panicle ◽  
Four Levels ◽  
Sulfate Application ◽  
Plant Length

The study was conducted in JICA Tsukuba experimental rice field RE-2 from April 2018 to September 2018, to determine the effect of different levels of nitrogen fertilizer (Ammonium sulfate) application, on the growth and the yield of IR-28 rice. Four levels of nitrogen fertilizer were applied; 0kg.ha-1 (N0), 40kg.ha-1(N40), 60kg.ha-1(N60) and 80kg.ha-1(N80). For each of the four levels, part of the fertilizer was applied as basal dressing prior to transplanting, and the rest was applied as top-dressing at the panicle initiation stage. The experimental design was a Randomized Complete Block Design (RCBD) with four treatments and three replications. The plant length, the tiller number and the leaf colour were measured for growth data. The number of panicles per m2, the number of spikelets per panicle, the spikelet fertility rate, the 1000 grains weight, and the calculated yield were determined for yield components assessment. The plant length and the tiller number were significantly higher in N80 and N60 compared to N40 and N0, and N80 showed the highest values. There was no significant difference among the four nitrogen levels in terms of the number of panicles per m2 and the number of spikelets per panicle. The spikelet fertility rate and the 1000 grains weight were significantly higher in N80, N60 and N40 compared to N0, and no significant difference was observed among the three. Calculated yield values were higher in N80 (5.74 tons.ha-1) and N60 (5.38 tons.ha-1) compared to N40(4.88 tons.ha-1) and N0 (4.36 tons.ha-1), but there were no significant differences among the four treatments (5% Level of HSD). These results suggest that a high yield of rice can be achieved through the application of high amounts of nitrogen fertilizers. N60 nitrogen level can be recommended for optimum yield of IR-28. Although N80 showed higher yield and yield components, N60 is the best and the most economical nitrogen level required for optimum yield of IR-28.

scholarly journals The Influence of Ammonium Sulfate Fertilization on the pH of Sugarcane Soils

1969 ◽  
Vol 46 (4) ◽  
pp. 297-306
Author(s):  
G. Samuels ◽  
F. González-Vélez
Keyword(s):  
Nitrogen Source ◽  
Ammonium Sulfate ◽  
Soil Ph ◽  
Rapid Decrease ◽  
Clay Loam ◽  
Soil Horizons ◽  
Available Nutrients ◽  
Ph Values ◽  
Sulfate Application ◽  
Continuous Use

The continuous use of ammonium sulfate as a nitrogen source for sugarcane has caused a lowering of soil pH and changes in available nutrients on a Vega Alta clay loam as follows: 1. Increasing rates of ammonium sulfate fertilizers lowered soil pH values for all soil horizons from 0 to 6 to 12 to 18 inches. 2. Available calcium decreased with increasing amounts of ammonium sulfate in all soil horizons from 0 to 18 inches. 3. The loss of available magnesium in the soil was slight when compared to calcium, giving rise to narrow calcium:magnesium ratios in the surface 0 to 6 inches of soil. 4. With increasing acidity there were large increases in soluble manganese, iron, and aluminum in all soil horizons. 5. The quantity of soluble manganese was much higher than that of iron giving rise to iron:manganese ratios of less than 1. 6. The rapid decrease in soil pH with increasing rates of ammonium sulfate application was evident not only in an 18-year experiment but also in a 3 1/2-year experiment on the same soil. 7. A Vayas clay with a pH of about 8 failed to have its soil pH lowered to any marked degree by use of ammonium sulfate for 19 years. 8. The application of the ammonium sulfate in the cane row instead of between the cane rows has caused soil pH values to be lower in the cane row than between the rows.

Impact of nitrogen fertilizers on methane emissions from flooded rice

2016 ◽  
Vol 1 (02) ◽  
pp. 124-128
Author(s):  
Arti Bhatia ◽  
Sandeep K. Malyan ◽  
Ritu Tomer ◽  
Om Kumar
Keyword(s):  
Ammonium Sulfate ◽  
Block Design ◽  
Methane Flux ◽  
Fertilizer Application ◽  
Methane Emissions ◽  
Nitrogen Fertilizers ◽  
Rice Soils ◽  
Flooded Rice ◽  
Randomized Complete Block Design ◽  
Sulfate Application

Methane is second most potent greenhouse gas emitted under anaerobic condition in rice soils. Effects of different nitrogen fertilizer application on methane emissions in flooded paddy field were studied. The experiment was laid out in a randomized complete block design with three treatments and three replications. The treatments were control (0 kg N ha-1), urea (120 kg N ha-1) and ammonium sulfate (120 kg N ha-1). In all treatments P (60 kg P2O5 ha-1) along with K (40 kg K2O ha-1) were also applied as basal dose. The cumulative seasonal methane flux was highest in urea 36.3 (kg ha-1) followed by control 35.2 (kg ha-1) and ammonium sulfate 28.5 (kg ha-1). Ammonium sulfate application reduced total seasonal emission by 19.5% as compared to control while it reduced CH4 emissions by 21.6% as compared to urea application. On the basis of this study we can conclude that application of ammonium sulfate is an effective tool for mitigating methane emissions from rice soils.

scholarly journals Impact of Nitrogen Fertilizers on Methane Emissions from Flooded Rice

2016 ◽  
Vol 11 (3) ◽  
pp. 846-850 ◽  
Author(s):  
Sandeep K. Malyan ◽  
Arti Bhatia ◽  
Om Kumar ◽  
Ritu Tomer
Keyword(s):  
Ammonium Sulfate ◽  
Block Design ◽  
Methane Flux ◽  
Fertilizer Application ◽  
Methane Emissions ◽  
Nitrogen Fertilizers ◽  
Rice Soils ◽  
Flooded Rice ◽  
Randomized Complete Block Design ◽  
Sulfate Application

Methane is second most potent greenhouse gas emitted under anaerobic condition in rice soils. Effects of different nitrogen fertilizer application on methane emissions in flooded paddy field were studied. The experiment was laid out in a randomized complete block design with three treatments and three replications. The treatments were control (0 kg N ha-1), urea (120 kg N ha-1) and ammonium sulfate (120 kg N ha-1). In all treatments P (60 kg P2O5 ha-1) along with K (40 kg K2O ha-1) were also applied as basal dose. The cumulative seasonal methane flux was highest in urea 36.3 (kg ha-1) followed by control 35.2 (kg ha-1) and ammonium sulfate 28.5 (kg ha-1). Ammonium sulfate application reduced total seasonal emission by 19.5% as compared to control while it reduced CH4 emissions by 21.6% as compared to urea application. On the basis of this study we can conclude that application of ammonium sulfate is an effective tool for mitigating methane emissions from rice soils.

Mitigation of ammonia volatilisation from urea with micronised sulfur applied to common bean

Soil Research ◽  
2019 ◽  
Vol 57 (4) ◽  
pp. 357
Author(s):  
Carlos Alexandre Costa Crusciol ◽  
Danilo Silva Almeida ◽  
Cleiton José Alves ◽  
Rogério Peres Soratto ◽  
Evelin Oliveira Krebsky ◽  
...  
Keyword(s):  
Common Bean ◽  
Ammonium Nitrate ◽  
Ammonium Sulfate ◽  
Tropical Soils ◽  
Limiting Nutrient ◽  
Bean Yield ◽  
Urea Ammonium Nitrate ◽  
Ammonia Volatilisation ◽  
Sulfate Application ◽  
Urea Granules

Urea with micronised sulfur (S) in granules may result in lower nitrogen (N) depletion through ammoniacal N (NH3-N) loss than conventional urea due to the acidification reaction of S near urea granules in soil, and the addition of S to the urea may provide a limiting nutrient in tropical soils. The research objectives were to (1) verify whether urea containing micronised S (urea+S) can mitigate NH3-N volatilisation in comparison to conventional urea, ammonium nitrate, and ammonium sulfate; and (2) evaluate the efficiency of N and S sources for common bean (Phaseolus vulgaris L.) grown on coarse-, medium-, and fine-textured soil. The results showed that ~90% of NH3-N volatilisation occurred during the first 14 days after application. The blend of elemental sulfur and sulfate in urea reduces the loss of N by NH3-N volatilisation compared with regular urea but not enough to achieve the low volatilisation as observed for ammonium nitrate and ammonium sulfate application. Despite the differences in the leaf N and S concentration and bean yield components, no differences were observed among N sources in grain yield in general.

The Coagulation Abnormalities in Systemic Lupus Erythematosus

1968 ◽  
Vol 20 (03/04) ◽  
pp. 457-464 ◽  
Author(s):  
L Gonyea ◽  
R Herdman ◽  
R. A Bridges
Keyword(s):  
Systemic Lupus Erythematosus ◽  
Ammonium Sulfate ◽  
Lupus Erythematosus ◽  
Anticoagulant Activity ◽  
Species Specificity ◽  
Sensitive Assay ◽  
Systemic Lupus ◽  
Coagulation Abnormalities

SummaryAn anticoagulant occurring in 4 of 6 patients with SLE has been demonstrated by a sensitive assay utilizing an ammonium sulfate fraction of serum. The anticoagulant functions as an inhibitor of the activation of prothrombin. No species specificity was demonstrable. The inhibitor behaves clinically and chromatographically as an immunoglobulin, although an attempt to demonstrate directly the antibody nature of the inhibitor was not successful.A severe, apparently independent, decrease in the level of prothrombin was observed in the patient with hemorrhagic symptoms. In contrast to the anticoagulant activity, the low prothrombin has persisted during treatment.

Extraction and Partial Purification of Protease from Bilimbi (Averrhoa bilimbi L.)

2013 ◽  
Vol 10 (2) ◽  
pp. 29
Author(s):  
Normah Ismail ◽  
Nur' Ain Mohamad Kharoe
Keyword(s):  
Molecular Weight ◽  
Protein Content ◽  
Ammonium Sulfate ◽  
Molecular Weight Distribution ◽  
Weight Distribution ◽  
Protease Activity ◽  
Protein Concentration ◽  
Temperature Stability ◽  
Partial Purification ◽  
Ammonium Sulfate Precipitation

Unripe and ripe bilimbi (Averrhoa bilimbi L.) were ground and the extracted juices were partially purified by ammonium sulfate precipitation at the concentrations of 40 and 60% (w/v). The collected proteases were analysed for pH, temperature stability, storage stability, molecular weight distribution, protein concentration and protein content. Protein content of bilimbi fruit was 0.89 g. Protease activity of both the unripe and ripe fruit were optimum at pH 4 and 40°C when the juice were purified at 40 and 60% ammonium sulfate precipitation. A decreased in protease activity was observed during the seven days of storage at 4°C. Molecular weight distribution indicated that the proteases protein bands fall between IO to 220 kDa. Protein bands were observed at 25, 50 and 160 kDa in both the unripe and ripe bilimbi proteases purified with 40% ammonium sulfate, however, the bands were more intense in those from unripe bilimbi. No protein bands were seen in proteases purified with 60% ammonium sulfate. Protein concentration was higher for proteases extracted with 40% ammonium sulfate at both ripening stages. Thus, purification using 40% ammonium sulfate precipitation could be a successful method to partially purify proteases from bilimbi especially from the unripe stage. 

Effect of Methionine and Ammonium Sulfate upon Performance of Ruminants Fed High Corn Rations

1973 ◽  
Vol 36 (6) ◽  
pp. 1186-1190 ◽  
Author(s):  
K. K. Bolsen ◽  
Walter Woods ◽  
Terry Klopfenstein
Keyword(s):  
Ammonium Sulfate
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