Fertilizer Efficiency and Soil Apparent Nutrient Balance for Barley under Long-Term Fertilization

2013 ◽  
Vol 39 (4) ◽  
pp. 665
Author(s):  
Xu TANG ◽  
Yi CHEN ◽  
Chun-Yan WU ◽  
Sheng-Mao YANG ◽  
Yu-Xue LIU ◽  
...  
Keyword(s):  
Nutrient Balance ◽  
Fertilizer Efficiency ◽  
Apparent Nutrient Balance

scholarly journals Can Long-Term Experiments Predict Real Field N and P Balance and System Sustainability? Results from Maize, Winter Wheat, and Soybean Trials Using Mineral and Organic Fertilisers

Agronomy ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 1472
Author(s):  
Ilaria Piccoli ◽  
Felice Sartori ◽  
Riccardo Polese ◽  
Maurizio Borin ◽  
Antonio Berti
Keyword(s):  
Winter Wheat ◽  
Nutrient Balance ◽  
Environmental Indicators ◽  
Nutrient Loss ◽  
Real Field ◽  
Short Term ◽  
Organic Fertiliser ◽  
Long Term Experiments ◽  
P Balance

Agri-environmental indicators such as nutrient balance may play a key role in soil and water quality monitoring, although short-term experiments might be unable to capture the sustainability of cropping systems. Therefore, the objectives of this study are: (i) to evaluate the reliability of long-term experimental N and P balance estimates to predict real field (RF) (i.e., short-term transitory) conditions; and (ii) to compare the sustainability of short- and long-term experiments. The LTE-based predictions showed that crops are generally over-fertilised in RF conditions, particularly maize. Nutrient balance predictions based on the LTE data tended to be more optimistic than those observed under RF conditions, which are often characterised by lower outputs; in particular, 13, 44, and 47% lower yields were observed for winter wheat, maize, and soybean, respectively, under organic management. The graphical evaluation of N and P use efficiency demonstrated the benefit of adopting crop rotation practices and the risk of nutrient loss when liquid organic fertiliser was applied on a long-term basis. In conclusion, LTE predictions may depend upon specific RF conditions, representing potential N and P use efficiencies that, in RF, may be reduced by crop yield-limiting factors and the specific implemented crop sequence.

scholarly journals MANAGEMENT OF THE SURGICAL SOLUTIONS FOR FEEDING – A PREVENTION FACTOR FOR NUTRIENT BALANCE IMPAIRMENT

2017 ◽  
Vol 64 (3) ◽  
pp. 194-200
Author(s):  
Corneliu Tudor ◽  
◽  
Costel Şavlovschi ◽  
Cristian Brănescu ◽  
Ahed El-Khatib ◽  
...  
Keyword(s):  
Nutrient Balance ◽  
Surgical Techniques ◽  
Postoperative Management ◽  
Postoperative Surveillance ◽  
Feeding Tubes ◽  
Term Evolution ◽  
Long Run ◽  
Nursing Services ◽  
Limited Period

Aim. The paper aims, thanks to the long-standing practice, to synthesize the clinical experience gained during the surgery for feeding tubes management and highlight the details we had to deal with in order to overcome the local and general difficulties. Materials and method. A retrospective study was carried out over a period of 20 years (1996-2016), on the patients who underwent surgery for placing feeding tubes in our clinic. They were analyzed: the techniques used, the long-term evolution, the complications and the incidents and the way they were solved. Results. A total of 329 patients were enrolled in the study. The surgical techniques used were: classic surgical solutions (300 cases) and percutaneous endoscopic gatrostomy (PEG, 29 cases). For classical interventions, post-operative evolution was good in 219 patients (73%) and was complicated by various accidents and incidents in 81 cases (23%). The study presents the causes that may lead to these complications, the local and general, clinical and paraclinical consequences and the correct surgical attitude, as well as particular cases that required the adaptation of the surgical techniques to local anatomical and functional polymorphism. In the long run, the jejunostomy appears to be relatively inferior to gastrostomy, in terms of toland efficiency. PEG complications were minor and transient, but the reduced number of cases and the limited period of postoperative surveillance did not allow statistically significant conclusions to be drawn. Conclusions. The postoperative management of surgical feeding solutions requires permanent collaboration between surgeon, patient and outpatient nursing services at home and requires knowing and observing of a specific nursing protocol to avoid disturbing the nutrient balance of the patient.

Long-term effects of fertilization and manuring on groundnut yield and nutrient balance of Alfisols under rainfed farming in India

2013 ◽  
Vol 96 (1) ◽  
pp. 29-46 ◽  
Author(s):  
Ch. Srinivasarao ◽  
Sumanta Kundu ◽  
B. Venkateswarlu ◽  
Rattan Lal ◽  
A. K. Singh ◽  
...  
Keyword(s):  
Nutrient Balance ◽  
Long Term Effects ◽  
Rainfed Farming

scholarly journals Pig slurry characteristics, nutrient balance and biogas production as affected by separation and acidification

2014 ◽  
Vol 153 (1) ◽  
pp. 177-191 ◽  
Author(s):  
S. G. SOMMER ◽  
M. HJORTH ◽  
J. J. LEAHY ◽  
K. ZHU ◽  
W. CHRISTEL ◽  
...  
Keyword(s):  
Biogas Production ◽  
Nutrient Balance ◽  
Heavy Metal Accumulation ◽  
Field Application ◽  
Fertilizer Efficiency ◽  
Pig Slurry ◽  
Wheat Field ◽  
Phosphorus And Potassium ◽  
Nitrogen Phosphorus ◽  
Npk Fertilization

SUMMARYAnimal slurry is separated in order to avoid excessive nitrogen, phosphorus and potassium (NPK) fertilization of crops in the field. To enhance fertilizer efficiency further, slurry and its separation products may be acidified, for instance in animal houses. The current study quantified the effects of these treatments, both individually and in combination, on fertilizer efficiency, energy production and heavy metal accumulation as a result of manure management. Acidification increased the availability of N to plants in the manure applied, and provided a better match between plant-available NPK in the manure and separation fraction applied to fields and crop need. Total biogas production was not affected by separation, whereas acidification reduced biogas production because the process was inhibited by a low pH and a high sulphur concentration. The amount of copper applied per hectare in the liquid manure to the wheat field was lower than the amount taken up and more zink and copper was applied in the solid fraction to maize field than taken up. The transportation and field application of solids and liquids did not increase management costs when compared to the transportation of slurry alone, but the investment and running costs of separators and manure acidification increased overall management costs.

scholarly journals System productivity, nutrient uptake and nutrient balance in the wheat-mungbean-t. Aman rice cropping system

2017 ◽  
Vol 42 (3) ◽  
pp. 509-520
Author(s):  
MA Quddus ◽  
JΑ Mian ◽  
MA Hashem ◽  
HM Naser ◽  
MA Hossain
Keyword(s):  
Nutrient Uptake ◽  
Nutrient Balance ◽  
Cropping System ◽  
Fertilizer Application ◽  
Soil Test ◽  
System Productivity ◽  
Loam Soil ◽  
P Balance ◽  
Absolute Control ◽  
Apparent Nutrient Balance

System productivity, nutrient uptake and apparent nutrient balance in the wheatmungbean- T. aman rice cropping system was studied. The experiment comprised four treatments-absolute nutrient control (T1); farmer’s practice (T2); AEZ basis fertilizer application (T3) and soil test basis fertlizer application (T4). The treatments were compared in a RCBD with three replications over two consecutive years, 2008-09 and 2009-10. The experiment was conducted in Chhiata clay loam soil. The average yields of wheat, mungbean and T. aman ranged from 1415 to 3096 kg ha-1, 1020 to 1463 kg ha-1 and 2999 to 4282 kg ha- 1, respectively showing T4 as the best treatment. The same treatment (T4) demonstrated the highest nutrient uptake by the crops. The apparent balance of N and K (difference between nutrient uptake and nutrient addition) was negative; however it was less negative for T4 treatment. The P balance was positive for all the treatment except T1. Positive S balance was observed in T3 and T4 but negative in absolute control and farmer’s practice. Zinc and B balance was also positive in case of T3 and T4, but negative for T1 and T2 except B. The study suggests soil test basis fertlizer recommendation for the wheatmungbean- T. aman rice cropping system.Bangladesh J. Agril. Res. 42(3): 509-520, September 2017

Soil and plant nutritional status in fruit orchards in Syria

2008 ◽  
Vol 56 (3) ◽  
pp. 363-370 ◽  
Author(s):  
M. El-Fouly ◽  
M. Shaaban ◽  
T. El-Khadraa
Keyword(s):  
Management Practices ◽  
Nutrient Management ◽  
Nutrient Balance ◽  
Soil Samples ◽  
Soil Conditions ◽  
Plant Tissues ◽  
Fertilizer Use ◽  
Ph Values ◽  
Fruit Orchards

A study was conducted over 15 years in apple, peach, pear, citrus, grapevine and olive orchards in different locations in Syria. The study aimed at monitoring and evaluating the long-term nutrient behaviour in plants and soil in order to suggest measures for nutrient management improvement. Leaf and soil samples were collected in the years 1982, 1987, 1990 and 1997. The soils were characterized by high pH values, high CaCO 3 and low to medium organic matter contents. Due to the unfavourable soil conditions and ill-chosen fertilizer use, the nutrient balance in the plant tissues was disturbed. To correct the situation, the application of improved nutrient management practices was suggested.

Main Chemical Nutrient Balances of a Typical Arable Ecosystem in North China

2012 ◽  
Vol 550-553 ◽  
pp. 2728-2732 ◽  
Author(s):  
Kui Peng
Keyword(s):  
Land Use ◽  
Large Scale ◽  
North China ◽  
Nutrient Balance ◽  
Nutrient Cycle ◽  
Anthropogenic Factors ◽  
Agricultural Ecosystem ◽  
C And N ◽  
Resource Data

Changes of nutrient cycle and balance in agricultural ecosystem will bring heavy impacts not only on land production, but also on ecological and environmental condition. We studied on the balances of main nutrients (carbon, nitrogen and phosphor) and their long-term changes in a typical arable ecosystem in North China, based on the resource data got from household surveys combined with land use data derived from remote sensing imagery. The results show that C and N balances of large-scale irrigated land changed from deficits in 1945 into great surpluses in 2002, respectively, and P surpluses also doubled in 2002. C, N and P balances in overall arable ecosystem showed significant surpluses despite of decreased total arable area after 60 years. Contrarily, C and N fluxes of arable landscape in 1945 showed overall deficits. Nutrient balance changes of arable lands were impacted mainly by anthropogenic factors such as fertilizer input, land productivity crop residue utility and land use.

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