Results 91 to 100 of about 521,788 (293)

Soil sustainability in organic agricultural production [PDF]

, 2006
Traditionally, the assessment of soil sustainability and the potential impact of cultivation are based upon the application of chemical procedures. In the absence of a biological context, these measurements offer little in understanding longterm changes ...
Killham, K, May-Roberts, S, Paton, G, Robertson, J   +3 more
core  

Monitoring of total contents of copper in organically and conventionally managed soils. Part 1: Study plan and preliminary sampling of copper and other anthropogenic induced heavy metal contents in vineyard soils [PDF]

, 2010
The project aims to develop a survey designed for the representative assessment of copper contents in vineyard soils. The method development for the sampling of adequate monitoring areas is based on a preliminary survey of load distribution as well as on
Eibach, Rudolf, Maixner, Michael, Reichmuth, Christoph, Riepert, Frank, Steindl, Anna, Strassemeyer, Jörn, Strumpf, Thomas   +6 more
core   +2 more sources

Did the Indian Green Revolution Change the Farm Size–Productivity Relationship?

Applied Economic Perspectives and Policy, EarlyView.
ABSTRACT We examine the relationship between farm size and productivity during India's Green Revolution, a period of rapid technological transformation. Using a unique panel of over 5000 Indian farm households that spans the Green Revolution (1971–1999), we show that the classic (linear) inverse farm size–productivity relationship gradually evolved ...
Rabail Chandio, Leah E. M. Bevis
wiley   +1 more source

Non-inversion tillage in organic arable cropping [PDF]

, 2008
The opportunities for using an non-inversion tillage (NI) approach in organic systems has not been well investigated by research and what research has been done has not perhaps been sufficiently long-term.
Trump, Andrew
core  

Markets Mitigate Land‐Use Competition From Energy Crops and Increase Farm Revenues

Applied Economic Perspectives and Policy, EarlyView.
ABSTRACT Meeting the US Sustainable Aviation Fuel Grand Challenge target of 35 billion gal annually by 2050 will require an estimated 380 million–700 million dry tons of agricultural biomass feedstock. This study evaluates the implications of large‐scale biomass production for land use, crop production, and market outcomes under mature market ...
Daniel G. De La Torre Ugarte, Matthew H. Langholtz, Chad M. Hellwinckel   +2 more
wiley   +1 more source

Antifungal (Gaeumannomyces graminis var. tritici) activity of various glycosides of medicagenic acid

Acta Agrobotanica, 2012
Different concentrations of medicagenic acid and five glycosides of this acid isolated from alfalfa (Medicago sativa) were added to agar medium (corn meal agar, CMA) inoculated with cultures of Gaeumannomyces graminis var. tritici (Ggt).
Stefan Martyniuk, Marian Jurzysta
doaj   +1 more source

Monitoring programme of Finnish arable land : agua regia extractable trace elements in cultivated soils in 1998 [PDF]

, 2007
The main aim of this study was to produce internationally comparable knowledge on the status of cultivated soils in Finland. From the soil material collected during the latest sampling process under the national monitoring programme in 1998, 338 samples ...
Eurola, Merja, Laitonen, Annukka, Mäkelä-Kurtto, Ritva   +2 more
core  

Managing soil fertility in organic farming systems [PDF]

, 2002
Complex relationships exist between different components of the organic farm and the quantity and quality of the end products depend on the functioning of the whole system.
Abawi, Altieri, Atkinson, Atkinson, Atkinson, Aulakh, Balloni, Bannerjee, Barnes, Baumann, Belesky, Berry, Bethlenfalvy, Breland, Bulson, Carruthers, Chan, Clark, Clement, Dale, Davies, Davies, Dewes, Djurhuus, Doran, Douds, Drinkwater, Edwards, Flieβbach, Foulkes, Frederiksson, Grace, Handayanto, Hansen, Haynes, Hetrick, Hetrick, Hogh-Jensen, Hornby, Hu, Inderjit, Jarvis, Jawson, Jenkinson, Jenkinson, Jensen, Jones, Karasawa, Kearney, Kessel, Kim, Knudsen, Kristensen, Lampkin, Ledgard, Liebman, Liebman, Lotz, Mader, Mc Gonigle, Mueller, NIAB, Nicholson, Nix, Olofsdotter, Phelan, Poutala, Rahn, Rahn, Rajan, Rayns, SAC, Sanchez, Schmidt, Scullion, Silgram, Soil Association, Spiertz, Stein-Bachinger, Stockdale, Stockdale, Stockdale, Swift, Sylvester-Bradley, Taylor, Teasdale, Theunissen, Tisdall, Toosey, Torbet, Torstensson, UKROFS, Vanlauwe, Wander, Watson, Watson, Watson, Weinhold, Wells, Whitmore, Wild, Willey, Willson, Wolfe, Wolfe, Workneh, Wyland   +106 more
core   +1 more source

Modeling the Physical Characteristics of Ultrasound Pretreated Dialium guineense Whole Fruits Using Neural Network Pattern Recognition Model

AgriFood: Journal of Agricultural Products for Food, EarlyView.
The study of Physical characteristics of agricultural materials is necessary for the design of processes and machines for food production. Length, width, thickness, sphericity, unit mass, and aspect ratio were the physical characteristics of ultrasound pretreated Dialium guineense whole fruits subjected to Neural network modeling.
Mfrekemfon Akpan, Uduak George, Okon Esua   +2 more
wiley   +1 more source

Calcium-Magnesium salt of saponins from bird's foot trefoil seeds (Lotus corniculatus L.)

Acta Societatis Botanicorum Poloniae, 2015
A calcium-magnesium salt of saponins was isolated from bird's foot trefoil seeds with a yield of 0.04%. The salt contained: 1.37% - Ca and 0.04% - Mg. The saponin salts were deionized on IR-120 Amberlite and free crystalline saponin was obtained. In both
Piotr M. Górecki, Marian Jurzysta
doaj   +1 more source