Results 101 to 110 of about 220,937 (307)

Nitrogen Use Efficiency in Maize over Sixteen Years of Unbalanced Fertilization with Nitrogen and Potassium

open access: yesAgriculture
Adequate fertilization with nitrogen (N) and potassium (K) is essential to sustain crop productivity and minimize nitrogen losses to the environment. However, the increasing imbalance in fertilizer use in Poland, with low potassium inputs, may impair ...
Agnieszka Rutkowska   +1 more
doaj   +1 more source

Improvement of the soil-crop model AZODYN under conventional, low-input and organic conditions [PDF]

open access: yes, 2007
The use of mechanistic crop modelling, simulating the dynamics of crop N requirements and nitrogen supply from the soil and fertilizers, can provide sound advice to users. This paper describes a methodological way to improve soil-crop modeling used for N
David, Christophe   +3 more
core  

Cash for trash: An agro-economic value assessment of urban organic materials used as fertilizers in Cameroon [PDF]

open access: yes, 2019
The rapid expansion of cities in sub-Saharan Africa generates increasing volumes of diversified organic wastes that require management and a high population need for local and fresh vegetables. Linking the different sources of organic materials generated
Fernandes, Paula   +7 more
core   +3 more sources

Nitrogen Fertilization of Basil

open access: yesHortScience, 1998
Sweet basil (Ocimum basilicum) is an important culinary herb in Virginia and other areas. The objective of this study, conducted during 1997, was to determine optimal N rate for fresh and dry matter yield. Seed of Broad Leaf sweet basil were direct-seeded on 18 June in rows 0.75 m apart in a RCBD design with 8 replications. Four N rates (0, 25, 50, and
M. Rangappa, H.L. Bhardwaj
openaire   +1 more source

The Third‐Generation Magnetic Super‐Stable Mineralizer: Complete Removal and Separation of Multiple Heavy Metal Pollutants

open access: yesAdvanced Science, EarlyView.
The 3rd‐generation magnetic super‐stable mineralizer M‐MgAl‐700 features a core‐shell structure, strong superparamagnetism, large surface area, and abundant oxygen defects. It achieves exceptional Cd(II) and As(V) mineralization capacities, reducing both pollutants in co‐contaminated water and soil to meet national standards.
Haoran Wang   +9 more
wiley   +1 more source

Plant Diagnostic in Durum Wheat

open access: yesРастениевъдни науки, 2013
 Seven varieties of durum wheat grown under nitrogen fertilization N0, N60, N120 and N180 were studied in content of total nitrogen, phosphorus and potassium in the tillering stage.
M. Almaliev   +2 more
doaj  

A MAS model for optimizing the spatial aspects of livestock production and manure abatement [PDF]

open access: yes, 2009
As a consequence of the EU Nitrates Directive many countries have developed policies to regulate manure production and manure emission on land. Farmers have three allocation options: spreading manure on own land, transporting manure to other farmers ...
Buysse, Jeroen   +6 more
core   +1 more source

Cotton Recruits Soil‐Derived Delftia tsuruhatensis to Suppress Aphid Detoxification Via Salicylic Acid‐Mediated Defense

open access: yesAdvanced Science, EarlyView.
This study systematically reveals a complex interactive network involving plants, microbes, and insects, elucidating the ecological and molecular mechanisms by which cotton enhances its resistance to aphids through the active recruitment of the beneficial soil bacterium Delftia tsuruhatensis.
Hui Xue   +11 more
wiley   +1 more source

Nitrogen balance and mineral nitrogen content in the soil in a long experiment with maize under different systems of N fertilization

open access: yesPlant, Soil and Environment, 2003
The effect of different systems of N fertilization on nitrogen balance and N transformation in the soil was studied in long-term stationary experiments (1991-2002) with successive growing of maize.
J. Balík   +3 more
doaj   +1 more source

Entwicklung eines Prognosemodells für den N-Düngebedarf im ökologischen Gemüsebau [PDF]

open access: yes, 2017
Several field grown vegetables are known to have a short vegetation period coupled with a high nitrogen demand. The proposed amendment of the German fertilization ordinance provides several changes.
Feller, C., Fink, M., Sradnick, A.
core  

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