AFS201-Reading II AFS 201
Popular in Systems Skills Developmentent for Agricultural and Food Systems
verified elite notetaker
Popular in Agricultural & Resource Econ
This 2 page Bundle was uploaded by Joana Peloia on Monday February 9, 2015. The Bundle belongs to AFS 201 at Washington State University taught by Dr. Kevin Murphy in Fall. Since its upload, it has received 182 views. For similar materials see Systems Skills Developmentent for Agricultural and Food Systems in Agricultural & Resource Econ at Washington State University.
Reviews for AFS201-Reading II
The content was detailed, clear, and very well organized. Will definitely be coming back to Joana for help in class!
-Adeline Paucek PhD
Report this Material
What is Karma?
Karma is the currency of StudySoup.
You can buy or earn more Karma at anytime and redeem it for class notes, study guides, flashcards, and more!
Date Created: 02/09/15
JANUARY 20th PLANT BREEDING What is plant breeding A process to create genetic variation and select superior genotypes from this variation How to create genetic variation Manual hybridization Emasculation tahih the maie pait away te ayeiei seitapeiiihatieh Crosspollination betweeh eiesirahie piahts Transgenics Mutation breeding A few examples of breeding objectives Reduce root diseases Improve germination rates in inhospitable soils high A levels cold soils etc Adjust root and plant size Selection Once diversity has been created the selection begins reeder mast haye ih mihei that met aii traits appiy te aii A systems E Cehyehtiehai A ahei tahie A may heed yarieties with eiittereht types at impreyemeht Direct Selection Fatmers haye their oth hreeeiih ehieetiyes ahei parehtai materiai te aehieye the eiesiteei eiiyersity whieh is iater eyaiuateei ahei seieeteei It can increase crop yield eg 530 in wheat crops and help bridge the yield gap between conventional ag systems and organic systems Eg Research that show the varieties with the best weed suppression capacity after plant breeding process so these varieties can be used into organic systems Why people usually chose organics It is perceived to have lower environmental impact less chemicals and be healthier more nutrients However it is important to remember that VARIETY not just the farming system has a great impact on nutrient value TAKE HOME MESSAGE To optimize production of a given system varieties adapted to this system should be used READING II NOTILL THE QUIET REVOLUTION By D Huggins and J Reganold Since 1974 the notill adoption has increased a lot in the Palouse region As a result of herbicides and machinery improvements in addition to universities farmer s effort extension and local erosion has decreased approximately Conventional Plow 90 in this area XXXXXXX Notill farming Water infiltrationconservation Reduce runoff and pollution Soil flora and fauna diversity Organic matter Soil structure Sequester C Less fuel and labor Reduce gov t investments to reverse erosion issues turning the soil before planting Learning curve V Aerate the soil Transition V Incorporate residuesmanure More moisture more soil born diseases V Reduce weeds Equipment cost x Erosion Higher reliance on herbicides x Soil degradation Slow germination may cause lower yields x Run off Can t be applied to root crops such as potatoes Top notill adopters US Brazil Argentina Canada and Australia Low notill adoption Europe given little government incentive Africa and Asia because they rather use their crop residues to other purposes and usually don t have the appropriate machinery and herbicides It is important to remember that just like other agriculture systems notill must be integrated to other good practices like crop rotation cover crop pesticidesherbicides rotation etc In US it can take from 700 to 1500 years to 1 inch of soil to be formed So using notill to avoid soil losses is definitely a good solution to soil conservation
Are you sure you want to buy this material for
You're already Subscribed!
Looks like you've already subscribed to StudySoup, you won't need to purchase another subscription to get this material. To access this material simply click 'View Full Document'