information about advantages and disadvantages of high yielding crops?
538516
Advantages is that they produce more food, therefore feeding more people, especially for those countries in need.\n\nHowever, they are genetically modified and some people are afraid of gm foods.
1081096
With the increase in the human population agriculture is going to become more important than ever.\n\nMost crops are being grown on large estates to get the benefit of economies of scale. \n\nThe chemical boosting of agriculture seems to be coming to an end. Farmers are putting fertilisers, weedkillers and plant killers on their crops with diminishing returns.\n\nThere is a move back to sustainable agriculture which means that farmers tend the soil with compost and let fields lie fallow and use less chemicals on the land.\n\nOrganic farming is also making inroads into the mass commercial production of crops - that is farmers who grow crops without using any chemicals.\n\nGenetically modified crops should improve yields and profitability  once the issues over the release of the plants are resolved.
852274
Effective in terms of yield is seen in many monocot plants like rice.Because they have chloroplasts in the bundle sheath cells of leaf.This character is called krantz anatomy.\nThe plants with krantz anatomy can preform two different path ways of photosynthesis,c3 and c4 cycles it results in more yield obviously
246887
The main advantages are that it's cleaner to produce and burn than gasoline or other conventional fuels.  The main disadvantages are that it's more expensive to produce and the energy yield per mole is lower.
634383
Pros-\n1.More Animals\n2.More Food.\n3.More Supplies.\nCons-\n1.More Food(people may eat too much).\n2.more viruses,sicknesses,and diseases.\n3.Too many animals.
720397
Wind and water erosion both erode top layes of the soil which is fertile.\nBoth can be controlled by planting trees over loose soil so that the roots can prevent soil erosion.\n\nBut water erosin is much more harmful since it can cut up land and make it unfit for cultivation, and water erosion can only take plaec where there is a slope.
575097
Infrastructure implies many things - roads, bridges, power, irrigation systems, dams, electricity distribution systems etc. As such, some of the investment in infrastructure does positively impact the agriculture sector. There are both tangible and intangible rewards over the long term that come from investing in infrastructure. The agriculture sector will certainly benefit from investing in infrastructure. Investments in developing the agriculture sector are equally important since production of better crops, higher yields do benefit the country. Note that a great number of Indians find gainful employment in the agriculture sector in rural areas. As such, investments in the agriculture sector cannot be ignored either.
119996
We all know the disadvantages are death, misery,repression, fright, bodily injuries, rampages, evilness.\nThe advantages would be population control, improved economy for many, advances in technology, employment, nationalism( may unite people who have a common enemy), education about other societies, spreading of ideas.
31017
CONS:\nThe following are possible negative effects:\n-possibility of toxins in food\n-possibility of new pathogens\n- reduced nutritional value\n- introduction of human allergens\n- transfer of antibiotic resistance to humans\n- unexpected immune-system and genetic effects from the introduction of novel compounds\n-reduced crop genetic diversity\n-effects on beneficial organisms\n-antibiotic resistance\n-pesticide resistance\n-Gene flow to neighboring crops and to related wild species\n-farm management issues (buffer strips, etc)\n-crop yield drag\n-changes in chemical pesticide use\n-profitability\n-marketing and trade issues \n\n\nPROS:\n\nThere are two main reasons for most genetically engineered crops.They are planted either to 1) survive exposure to certain herbicides (called herbicide-tolerant crops) or 2) kill certain insect pests (called pesticidal or insecticidal crops). \n\nThese are some of the other pros:\n-higher yields\n-more uniform quality\n-better shelf life\n-better nutritional values\n-decrease soil erosion\n-more flexibility for farmers\n-safer pest control to applicators\n-reduction of harmful pesticides
771169
you mean a)productive=producing crops or b)producing just any biomass?\n\nif you mean b) : it could be too salty, too dry, hot, frozen, flooded, etc or conditions too changeable\n\nif you mean b), you can add: too steep slope, or scattered with boulders and rocks so you cant make it into a field, thickly covered by vegetation that is hard to remove or simply too weedy.
401394
lets start with advantages.......\n   for power generation\n   alternate to non-renewable energy sources\n   \ndisadvantages....\n  expensive\n  harmful to environment(radiation)\n  risky\n\nenergy is produced in nuclear reactor by fission mechanism......
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Fields, in the classical theory, are a great place to plant corn.  Or wheat.  Vegetables do great in fields, if they are properly watered and fertilized.\n\nMaxwell's equations show the equivalence of different kinds of fields, which means you could theoretically plant corn where you had wheat last year.  \n\nIf the farmer is a musician and brings his instrument on his tractor while he plants, you will have harmonica motion.  If his son is also on the John Deere playing is instrument at the same time, you'll have a coupla harmonicas in motion.  \n\nI once knew a generator mechanic, in the Army.  He was pretty good; could fix the little 500 watt generators, all the way up to 20 kw models.  He never made general, though.
795045
Some advantages are reduced need for pesticides because the crops are grown to resist infestation (e.g. BT corn- resistant to corn borers). Crops can also be modified to have higher nutritional value. There are endless possibilities. There is also research being done on edible vaccines (which would be easier to administer to large populations in a short period of time, especially children), as well as other medical applications and treatments including cancer prevention and treatment. \n\nAs a point of interest, you might want to note that all banana's sold in north america are genetically modified and have been for decades (not sure of exact date).\n\nIf you want to know more about the Canadian governments' views on GM food and products here is the web site I used for a school project last month. It may also give you other ideas on where to find more information.\n\nhttp://www.inspection.gc.ca/english/sci/biotech/gen/queste.shtml#env
422810
try this: http://www.fao.org/docrep/T0115E/T0115E0j.htm
447820
try here http://www.ext.colostate.edu/pubs/garden/07704.html\nor\nhttp://highered.mcgraw-hill.com/sites/0072909412/student_view0/chapter6/chapter_summary.html
55746
benefits can make you have more energy by promoting the production of red blood cells. there aren't any bad side effects because iron is something your body needs (without it you become anemic and tired:o()
980111
YOU can co relate krants anatomy(presence of chloroplasts in bundle sheath cells) and high yield of starches in rice plant It needs some research on Internet .But otherwise it is a good topic for any seminars