Results 61 to 70 of about 71,098 (265)

Estimation of the environment as background for selection on adaptivity in white lupine breeding

open access: yesJournal of BioScience and Biotechnology, 2017
A representative evaluation of the breeding value of genotypes in the development of varieties with general and specific adaptability is possible using special features of nature background, which often do not coincide in informativity regarding the ...
Natalia Georgieva, Valentin Kosev
doaj  

Nutritive value responses to biological products in alfalfa forage (Medicago sativa L.) [PDF]

open access: yesPesticidi i Fitomedicina, 2018
The effects of the biological insecticides Madex and Agricolle, applied alone or in combination with the biological fertilizers Lithovit and Nagro, on chemical composition and enzyme in vitro digestibility, as well as energy feeding value of alfalfa dry ...
Mitkova-Nikolova Ivelina   +2 more
doaj  

Uncovering renewable energy policy impact channels on land values, the local farm structure, and farmland heterogeneity

open access: yesAmerican Journal of Agricultural Economics, EarlyView.
Abstract Germany's Renewable Energy Sources Act (REA), enacted in 2000 and subsequently amended, subsidized national renewable energy production with fixed feed‐in tariffs for renewable energy sources (RE) from wind, solar, and biogas. Empirical studies suggest that the policy was creating windfall effects for landowners and attribute farmland use ...
Lars Isenhardt   +6 more
wiley   +1 more source

Accounting for animal health in efficiency analysis: An application to Swedish dairy farms

open access: yesAmerican Journal of Agricultural Economics, EarlyView.
Abstract Poor animal health is a central concern in modern livestock production. Despite the necessity to incorporate animal health in efficiency analysis, the theoretical and empirical developments are limited on this subject. This article appropriately characterizes the axiomatic properties of animal health within a production framework.
Frederic Ang   +3 more
wiley   +1 more source

FORAGE PLANT CELL WALLS FIBER COMPONENTS CONTENT AND DIGESTIBILITY OF NEW VARIETIES PERENNIAL GRASSES IN THE VEGETATION

open access: yesЖивотновъдни науки, 2014
The forage plant cell walls fiber components, determining energy feeding value and enzyme in vitro digest¬ibility as the main forage quality characteristics are variable in the vegetation.
YORDANKA NAYDENOVA   +2 more
doaj  

Animal research in the UK: Regulation, implementation, welfare and development of new approach methodologies

open access: yesAnimal Models and Experimental Medicine, EarlyView.
Scientific research with animals in the UK is regulated by the Animals (Scientific Procedures) Act 1986 with the National Centre for the Replacement, Refinement and Reduction of Animals in Research providing support for best practice and facilitating development of new approach methodologies.
Ewan St. John Smith   +6 more
wiley   +1 more source

Pearl's causality for integrating ecological datasets: A case study on Myricaria germanica in northern Italy

open access: yesApplications in Plant Sciences, EarlyView.
Abstract Premise Applied ecology can significantly influence policy decisions on environmental issues. Therefore, research in this field should be as transparent and reproducible as possible. Existing expertise from a broad range of disciplines should also be integrated into ecological research to allow researchers to maximize understanding of complex ...
Kailin Weitkämper   +5 more
wiley   +1 more source

Organic cultivation of field pea by use of products with different action

open access: yesSpanish Journal of Agricultural Research, 2015
The possibilities for increasing the productivity and control of the pea weevil (Bruchus pisorum L.) in field pea (Pisum sativum L.) organic cultivation by the use of following bioproducts NeemAzal T/S and Pyrethrum FS-EC (insecticides), applied ...
Natalia Georgieva   +2 more
doaj   +1 more source

Mandible composition and properties in two selected praying mantises (Insecta, Mantodea)

open access: yesThe Anatomical Record, EarlyView.
Abstract Insects process their food with their cuticle‐based mouthparts. These feeding structures reflect their diversity and can, in some cases, showcase adaptations in material composition, mechanical properties, and shape to suit their specific dietary preferences.
Malo Roze   +3 more
wiley   +1 more source

Ecological estimation of swards grown in the region of Middle Balkan Mountains

open access: yesJournal of BioScience and Biotechnology, 2018
One of the main problems in contemporary agrarian production is the irrational utilization and management of natural resources as well as non-compliance with the biological characteristics of particular species in accordance with their adaptability ...
Natalia Anastasova Georgieva   +2 more
doaj  

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