نتایج جستجو برای: crop losses

تعداد نتایج: 128664  

2017
R. J. Johnson

We estimate the annual financial losses resulting from wildlife damage to major crops and livestock in Nebraska. For each wildlife species, the damage problem is presented along with a description of how the estimate was made. Field crop estimates include losses from Plains pocket gophers (Geomys bursarius), commensal rodents (Rattus norvegicus and Mus musculus), field rodents in grain fields (...

2015
Víctor Resco de Dios Jacques Roy Juan Pedro Ferrio Josu G. Alday Damien Landais Alexandru Milcu Arthur Gessler

Evapotranspiration is a major component of the water cycle, yet only daytime transpiration is currently considered in Earth system and agricultural sciences. This contrasts with physiological studies where 25% or more of water losses have been reported to occur occurring overnight at leaf and plant scales. This gap probably arose from limitations in techniques to measure nocturnal water fluxes ...

Journal: :American Journal of Agricultural Economics 2023

Cover cropping has the potential to improve resilience of agriculture climate-change-induced extreme weather events. However, rigorous quantitative evidence on effect cover crops is still lacking. Using a novel data set that combines satellite-based crop information and county-level insurance data, we examine impact planting prevented-planting-related losses are typically caused by heavy rainfa...

2017
Shikha Sharma

Lettuce (Lactuca sativa L.) is a widely used leafy vegetable belonging to the family Asteraceae (2n = 18). It is nutritionally rich with medicinal property and well known for its high vitamin A content, and minerals like calcium and iron. This is the only crop which is rich in Lactupicrin and act as an anticancerous as well as, suitable candidate for the production and delivery of therapeutic p...

2008
Patrick W. Walsh

S, POSTERS AND O PRESENTATIONS Altay, F, S Gunasekaran. 2005. Effect of drying temperature on gelation of corn starch (Abstract 71D-29). Annl Mtg Inst Food Technologists, Technical Program Abstracts, New Orleans, LA, July 16-20. Altay, F, S Gunasekaran, S Kasapis. 2005. Viscoelasticity of gelation gels in mixture with high levels of sugar (Abstract 36D-33). Annl Mtg Inst Food Technologists, Tec...

Journal: :کشاورزی (منتشر نمی شود) 0
رضا طباطبایی کلور استادیار، گروه ماشین های کشاورزی، دانشگاه علوم کشاورزی و منابع طبیعی ساری، مازندران

it is very important to test and evaluate the performance and ability of new-design machinery in comparison with available ones. based on this, a tractor front-mounted rice reaper was compared and evaluated with tiller- mounted and self-propelled reapers. field experiments were conducted to determine forward speed, field capacity, harvesting losses, labor and costs. experiments were conducted b...

2016
Carolyn Mitchell Rex M. Brennan Julie Graham Alison J. Karley

Interactions between plants and insect herbivores are important determinants of plant productivity in managed and natural vegetation. In response to attack, plants have evolved a range of defenses to reduce the threat of injury and loss of productivity. Crop losses from damage caused by arthropod pests can exceed 15% annually. Crop domestication and selection for improved yield and quality can ...

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