scholarly journals Impact of biochar on nutrient supply, crop yield and microbial respiration on sandy soils of northern Germany

2021 ◽  
Author(s):  
Christian Knoblauch ◽  
S.H. Renuka Priyadarshani ◽  
Stephan M. Haefele ◽  
Nicola Schröder ◽  
Eva‐Maria Pfeiffer
Keyword(s):  
Crop Yield ◽  
Microbial Respiration ◽  
Sandy Soils ◽  
Nutrient Supply ◽  
Northern Germany

scholarly journals Crop Yield and Soil Fertility Status of Long-Term Rice-Rice-Wheat Cropping Systems

2017 ◽  
Vol 5 (1) ◽  
pp. 42-50
Author(s):  
Nabin Rawal ◽  
Rajan Ghimire ◽  
Devraj Chalise
Keyword(s):  
Soil Fertility ◽  
Crop Yield ◽  
Management Practices ◽  
Crop Yields ◽  
Oryza Sativa L ◽  
Farmyard Manure ◽  
Wheat Yield ◽  
Nutrient Supply ◽  
Available Phosphorus

Balanced nutrient supply is important for the sustainable crop production. We evaluated the effects of nutrient management practices on soil properties and crop yields in rice (Oryza sativa L.) - rice - wheat (Triticum aestivum L.) system in a long-term experiment established at National Wheat Research Program (NWRP), Bhairahawa, Nepal. The experiment was designed as a randomized complete block experiment with nine treatments and three replications. Treatments were applied as: T1- no nutrients added, T2- N added; T3- N and P added; T4- N and K added; T5- NPK added at recommended rate for all crops. Similarly, T6- only N added in rice and NPK in wheat at recommended rate; T7- half N; T8- half NP of recommended rate for both crops; and T9- farmyard manure (FYM) @10 Mg ha-1 for all crops in rotation. Results of the study revealed that rice and wheat yields were significantly greater under FYM than all other treatments. Treatments that did not receive P (T2, T3, T7, T8) and K (T2, T4) had considerably low wheat yield than treatments that received NPK (T5) and FYM (T9). The FYM lowered soil pH and improved soil organic matter (SOM), total nitrogen (TN), available phosphorus (P), and exchangeable potassium (K) contents than other treatments. Management practices that ensure nutrient supply can increase crop yield and improve soil fertility status.Int. J. Appl. Sci. Biotechnol. Vol 5(1): 42-50

Potassium fertilization on sandy soils in relation to soil test, crop yield and K-leaching

1998 ◽  
Vol 161 (5) ◽  
pp. 591-599 ◽  
Author(s):  
Frank Wulff ◽  
Volker Schulz ◽  
Albrecht Jungk ◽  
Norbert Claassen
Keyword(s):  
Crop Yield ◽  
Sandy Soils ◽  
Soil Test ◽  
Potassium Fertilization

The benthic macrofauna from the Lower Maastrichtian chalk of Kronsmoor (northern Germany, Saturn quarry): taxonomic outline and palaeoecologic implications

2016 ◽  
Vol 66 (4) ◽  
pp. 671-694 ◽  
Author(s):  
Julia Engelke ◽  
Klaus J.K. Esser ◽  
Christian Linnert ◽  
Jörg Mutterlose ◽  
Markus Wilmsen
Keyword(s):  
Benthic Macroinvertebrates ◽  
Depositional Environment ◽  
Distribution Patterns ◽  
Nutrient Supply ◽  
Benthic Macrofauna ◽  
Considerable Proportion ◽  
Northern Germany ◽  
Suspension Feeders ◽  
Geochemical Proxies ◽  
Lower Maastrichtian

AbstractThe benthic macroinvertebrates of the Lower Maastrichtian chalk of Saturn quarry at Kronsmoor (northern Germany) have been studied taxonomically based on more than 1,000 specimens. Two successive benthic macrofossil assemblages were recognised: the lower interval in the upper part of the Kronsmoor Formation (Belemnella obtusaZone) is characterized by low abundances of macroinvertebrates while the upper interval in the uppermost Kronsmoor and lowermost Hemmoor formations (lower to middleBelemnella sumensisZone) shows a high macroinvertebrate abundance (eight times more than in theB. obtusaZone) and a conspicuous dominance of brachiopods. The palaeoecological analysis of these two assemblages indicates the presence of eight different guilds, of which epifaunal suspension feeders (fixo-sessile and libero-sessile guilds), comprising approximately half of the trophic nucleus of the lower interval, increased to a dominant 86% in the upper interval, including a considerable proportion of rhynchonelliform brachiopods. It is tempting to relate this shift from the lower to the upper interval to an increase in nutrient supply and/or a shallowing of the depositional environment but further data including geochemical proxies are needed to fully understand the macrofossil distribution patterns in the Lower Maastrichtian of Kronsmoor.

Forest Continuity as a Key Determinant of Soil Carbon and Nutrient Storage in Beech Forests on Sandy Soils in Northern Germany

Ecosystems ◽  
2014 ◽  
Vol 17 (3) ◽  
pp. 497-511 ◽  
Author(s):  
Christoph Leuschner ◽  
Monika Wulf ◽  
Patricia Bäuchler ◽  
Dietrich Hertel
Keyword(s):  
Soil Carbon ◽  
Sandy Soils ◽  
Nutrient Storage ◽  
Beech Forests ◽  
Northern Germany ◽  
Forest Continuity

scholarly journals Optimalization of nutrient supply and row space in the growing of annual caraway

2007 ◽  
pp. 135-138
Author(s):  
Noémi Júlia Valkovszki ◽  
Éva Zámboriné Németh ◽  
Szilvia Sárosi
Keyword(s):  
Essential Oil ◽  
Crop Yield ◽  
Oil Content ◽  
Nutrient Supply ◽  
Row Space

Concerning the nutrient supply, it was found that the highest crop was produced with the N80K0 treatment (81.38 g m-2). The K application resulted in a decrease in crop yield. The highest crop yield per plant was found in plots with 48 cm row space. The best germination was reached in the plots with 48 cm row space (73%).If the level of K was elevated, the essential oil content increased. The maximum essential oil content was reached by treatment N0K80 (2.6284 ml 100 g sza.-1). The composition of essential oil was influenced both by the nutrient supply and by the growing area. Increasing the row space the ratio of d-carvone decreased. The amount of d-carvone was uniquely increased by use of K. The highest carvone level (66.25%) was identified at the N80+70K80 treatment as an average of row spaces.

Risk‐efficient portfolio crop choice with amended water and irrigation policies in northern Germany

2013 ◽  
Vol 73 (2) ◽  
pp. 373-388 ◽  
Author(s):  
Matthias Buchholz ◽  
Oliver Musshoff
Keyword(s):  
Crop Yield ◽  
Crop Yields ◽  
Future Research ◽  
Programming Approach ◽  
Northern Germany ◽  
Gross Margin ◽  
Economic Implications ◽  
Content Type ◽  
Crop Choice ◽  
Irrigation Intensity

PurposeIncreasing environmental concerns have placed the need for an enhanced water resources management on the policy agenda. In this context, a restrictive regulation of water withdrawals for irrigation has gained in importance. The purpose of this paper is to investigate how a reduction in water quotas and increased water prices affect risk‐efficient crop choices and the related economic implications for northern German farmers.Design/methodology/approachThe authors apply a whole‐farm risk programming approach to a typical arable farm in northern Germany. By using irrigation field trials, production activities with varying irrigation intensities and inherently incorporated crop yield uncertainty are defined.FindingsIn contrast to increased water prices, a reduction in water quotas leads to higher water savings and lower economic disadvantages for farmers. Due to an adjusted portfolio crop choice, as well as irrigation intensity, the reduction in the expected total gross margin is partially offset.Research limitations/implicationsThis example ensures volumetric water monitoring at the farm level which, however, remains a major pitfall in many other countries. From a methodological perspective, the crop yield distribution choice might affect the findings. Likewise, the consideration of downside risk in an irrigation context appears to be interesting for future research.Originality/valueThis is the first paper to compare the implications of differentiated water quotas and water pricing schemes suggested by the European Water Framework Directive, while taking risk‐efficient crop portfolio considerations into account. This approach facilitates water reallocation not only between crops, but also in terms of the crop‐specific irrigation intensity. Crop yields are based on a unique panel of micro data rather than expert opinions or simulations.

scholarly journals The effect of compost application on physical properties of sandy soil

2013 ◽  
pp. 67-70
Author(s):  
Tibor Aranyos ◽  
Lajos Blaskó ◽  
Attila Tomócsik ◽  
Marianna Makádi
Keyword(s):  
Soil Structure ◽  
Aggregate Stability ◽  
Sandy Soils ◽  
Nutrient Supply ◽  
First Year ◽  
High Porosity ◽  
Physical Measurements ◽  
Compost Application ◽  
Supply Capacity ◽  
Compost Treatment

The sewage sludge compost is suitable to improve the colloid-poor sandy soils, which are common characteristics of poor water- and nutrientholding capacity. The general characteristics of sandy soils are the light mechanical composition, the low content of humus and mineral colloids, large pore size and a bad aggregate stability. They have a poor nutrient supply capacity, due to its high porosity the organic matter is degraded very quickly to mineral colloids (Stefanovits et al., 1999). By the compost application the soil is enriched mineral and organic colloids, thereby improving the soil structure. The effect of addition of compost to soil the water- and nutrient-holding capacity and porosity could be increased and the bulk density could be decreased (Martens and Frankenberger, 1992). The aim of our experiment is to carry out physical measurements to determine the effects of compost treatment. In this study the results of the first year are presented.

scholarly journals Influence of Soil and Nutrient Management on Growth and Quality of Collards

2005 ◽  
Vol 15 (1) ◽  
pp. 163-168
Author(s):  
R.S. Mylavarapu ◽  
J.P. Smith ◽  
F. Munoz
Keyword(s):  
High Temperature ◽  
Nutrient Management ◽  
Sandy Soils ◽  
Nutrient Content ◽  
Conventional Tillage ◽  
Nutrient Supply ◽  
Harvest Time ◽  
Regression Analyses ◽  
Factors Affecting

High temperature and humidity during summer months in the southeastern U.S., in addition to crop nutritional status, are suggested to be the primary reasons for tipburn incidence in collards (Brassica oleracea Acephala Group) adversely affecting their marketability. A 2-year study was conducted to evaluate the efficiency of grower's standard practice (GSP), GSP + gypsum, and a programmed-release fertilizer (PRF) under conventional and deep tillage on collard yield and tipburn incidence. Subsoiling significantly increased yield over conventional tillage. Nutrient supply through PRF did not increase the yields; however, it resulted in either similar or higher levels of macro- and micronutrient levels both in soils and collard tissue compared to GSP and GSP + gypsum treatments. The occurrence of tipburn in collards is dependent on several factors, including nutritional, physiological, and environmental stresses. Regression analyses of tipburn ratings at harvest time and the soil and tissue nutrient content suggested that 47% of the variation could be attributed to soil and tissue levels of sulfur (S), zinc (Zn), and phosphorus (P). It is important, therefore, to ensure an optimum supply of nutrients to the plants to maintain the quality of the yields. The advantage of PRF in sandy soils, and identification of other factors affecting the tipburn in collards should be further investigated.

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