نتایج جستجو برای: seeder

تعداد نتایج: 380  

2014
Michael C Vasey V Thomas Parker Karen D Holl Michael E Loik Seth Hiatt

We investigated the hypothesis that maritime climatic factors associated with summer fog and low cloud stratus (summer marine layer) help explain the compositional diversity of chaparral in the coast range of central California. We randomly sampled chaparral species composition in 0.1-hectare plots along a coast-to-interior gradient. For each plot, climatic variables were estimated and soil sam...

Journal: :Current issues in intestinal microbiology 2006
T R Callaway J L Morrow T S Edrington K J Genovese S Dowd J Carroll J W Dailey R B Harvey T L Poole R C Anderson D J Nisbet

"Segregated early weaning" (SEW) of pigs reduces exposure to pathogenic bacteria, but upon arrival at grower facilities pigs may be co-mingled regardless of farm of origin. The present study was designed to examine the effect of mixing (social) stress on populations of Salmonella enterica Typhimurium in SEW pigs. Piglets (7 days old; n = 28 in each of 2 replicates) were separated into 2 treatme...

Journal: :International Journal of Agricultural and Biological Engineering 2021

To adapt to the diversity of hybrid rice and meet its requirements precision seeding, a pneumatic seeder with adjustable seeding rates was designed in this study. The employed an independent vortex pump provide air source for seed metering device. According flow device, sub-pipeline general pipeline were designed. performances two types pipelines verified by pressure uniformity tests. results s...

Journal: :Современные наукоемкие технологии (Modern High Technologies) 2020

Journal: :Journal of engineering mechanics and machinery 2023

This article focuses on the problems of low operating efficiency, multiple soil working components, poor trafficability, and adaptability current domestic no tillage seeders. Combining with agricultural mode planting wheat corn in double cropping area year, structure seeder is optimized, an intelligent universal one machine, dual use, deep loosening, layered fertilization studied designed.

Journal: :Japanese Journal of Farm Work Research 2017

Journal: :Japan Agricultural Research Quarterly: JARQ 2015

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