Results 81 to 90 of about 874,320 (141)

Improvement of three nucleic acid isolation protocols for an overall diagnosis of viruses on six vegetative propagated plants [PDF]

open access: yes, 2013
Biological Resources Center (BRCs) must be able to guarantee the sanitary status of the resources they distribute, in order to prevent the spread or emergence of diseases.
Bernardo, Pauline   +8 more
core  

Estimating yield of food crops grown by smallholder farmers: A review in the Uganda context [PDF]

open access: yes
Precise agricultural statistics are essential for planning and evaluation of agricultural investments to improve the productivity and profitability of smallholder farming systems.
Benson, Todd, Fermont, Anneke
core  

Modification of the existing maximum residue levels for acetamiprid in various crops. [PDF]

open access: yesEFSA J, 2021
EFSA (European Food Safety Authority)   +21 more
europepmc   +1 more source

Could phosphite be a new fungicide for organic farming? [PDF]

open access: yes, 2007
Quote from the article "Potassium phosphite, also called «phosphonate», is a salt of phosphonic acid with the formula K2HPO3. It should not be confounded with phosphates, nor with the organophosphorous insecticides which are also called ...
Speiser, Bernhard, Tamm, Lucius
core  

Dynamic general equilibrium analysis of improved weed management in Australia's winter cropping systems [PDF]

open access: yes
A recent analysis indicated that the direct financial cost of weeds to Australia’s winter grain sectorwas approximately $A1.2bn in 1998–1999. Costs of thismagnitude represent a large recurring productivity loss in an agricultural sector that is ...
Griffith, Garry R.   +3 more
core   +1 more source

Characteristics of various catch crops in the organic vegetable production in northern climate conditions : results from and on-farm study [PDF]

open access: yes, 2017
Catch crops are generally grown during the period between two main crops to prevent nutrient leaching and thus reduce nutrient losses from the system. Catch crops in Finnish organic vegetable farms are sown after the incorporation of green manure crop to
Iivonen, Sari   +2 more
core  

Modification of the existing maximum residue levels for emamectin in various crops. [PDF]

open access: yesEFSA J, 2021
EFSA (European Food Safety Authority)   +21 more
europepmc   +1 more source

A Critical Evaluation of the Capital Theory Approach to Sustainable Development [PDF]

open access: yes
Irrigation farmers in the lower reaches of the Vaal and Riet Rivers are experiencing substantial yield reductions in certain crops and more profitable crops have been withdrawn from production, hypothesised, as a result of generally poor but especially ...
Blignaut, J.N., de Wit, M.P.
core   +1 more source

Site Description for the University of Nebraska's Sandhills Agricultural Laboratory [PDF]

open access: yes, 1985
The Sandhills Agricultural Laboratory is operated by the University of Nebraska. The laboratory is located in the south-central part of the Nebraska Sandhills near Tryon, Nebraska (41 deg. 37' N; 100 deg. 50' W).
Blad, B. L., Gardner, B. R.
core   +1 more source

Biomass Supply from Alternative Cellulosic Crops and Crop Residues: A Preliminary Spatial Bioeconomic Modeling Approach [PDF]

open access: yes
This paper introduces a spatial bioeconomic model for study of potential cellulosic biomass supply at regional scale. By modeling the profitability of alternative crop production practices, it captures the opportunity cost of replacing current crops by ...
Egbendewe-Mondzozo, Aklesso   +4 more
core   +1 more source

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