what is the comparative effect of organic manure & NPK fertilizer on amaranthus spp.?
396046
but i think chemical NPK fertilizer will perform better since they can consist higher composition of nutrients and may relase nutrient faster than organic manure. \nhowever organic manure can be turn into compost and it also supply nutrients but not as much as chemical fertizer. organic manure has some advantage as compared with chemical fertilizer which they are slow release and may help to increase the soil quality (increase soil pH, proper soil structure.....)\ntry make some literature from soil science or soil fertility books can help you better.
100575
Do a hydroponic experiment.  it shows how the prospect of food shortages can be addressed.
216783
Nitrogen Phosphorus and Potassium remember NPK These elements are always essential to a plant and it's roots
435066
Plant roots, decaying vegetable matter.  Not very good for your garden.
762625
you could do something like, the effects of pollutants on soil, then to show your experiment try growing plants in different types of soil, have one with normal soil, your control, then others with different pollutants, oil, chemicals, garbage\nHopefully this could help
440983
http://en.wikipedia.org/wiki/Soil_life
260382
1) monitoring sunlight and rainfall conditions\n\n2) adjusting irrigation and fertilizer application based on results of #1\n\n3) automatic control of remote pest chasers (scarecrows)\n\n4) improved scaners to cull out produce that is unripe/damaged/infected.\n\nThere may be others.
956678
Wow, fun search -- but I think I got it!!\n\nhttp://sugarbeet.ucdavis.edu/SBPM/Nutrients/nitrogen.jpg\n\nHope that helps!
484619
Damage to Fetus Can Happen in Early Pregnancy \n\nCommon lawn care products can cause developmental problems in early pregnancy -- just days after conception, new research shows. \n\nExposure to newly treated lawns and golf courses -- before the recommended waiting period is over -- could harm the developing embryo, researchers say. Weed-B-Gon, Scott's 4XD, and Atrazine are just three products found to cause harm. \n\n'Even extremely low concentrations of these pesticides -- concentrations thought to not cause any harm if the person ingests it -- could interfere with both conception and an embryo's implantation in the uterusStudies have detected these pesticides in human ovarian fluid, fluid from semen, human amniotic fluid, and even in fluids that surround the human newborn,  In a previous two-year study, Greenlee investigated effects of pesticides and fungicides in women who mix and apply these chemicals. She found that women doing this kind of work were 27 times more likely to have fertility problems compared with pregnant women who didn't work with these chemicals.Pyrethrums are chrysanthemum-derived insecticides found in antilice treatments. They do not appear to have significant toxicity, but they have not been well studied in humans. \n\nArbuckle and Sever reviewed epidemiological studies of numerous individual pesticides and pesticide combinations. Overall, their review involved hundreds of thousands of individuals. Their data suggest an increased risk of fetal death associated with pesticides in general and with maternal employment in agricultural industries.
1070069
Here is a link to a great organic food producer called Nature's Path.  Excellent products.
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
847039
1.Cotton traps heat and prevents absorbing adequate moisture. \n2.Pesticides used in cotton growing destroy the soil chemical balance making it to be less beneficial in agriculture.\n3.Crop rotation and organic farming are some of  the best things to do to keep the earth usable.\n4.Crop rotation is cultivation of different crop varieties in every cropping season. Example: plant corn, after harvest plant peanut before another corn cropping.♥\n5.Crop rotation will help the soil to restore its chemical chemistry and reduce the increasing level of toxic components as the effects of pesticides used in the previous cropping.
804098
50o + 65n = 3125\n60o + 45n = 2925\n\nYou need to know what numbers of old and new packages will provide you with the total amount of each component needed.  Thus, the first equation shows the combo in terms of growth supplement, and the second equation shows it in terms of weed killer.  Solving the equation set will give you the optimum numbers of old and new packages:\n6(50o + 65n = 3125)        300o + 390n = 18750        \n-5(60o + 45n = 2925)     -(300o + 225n = 14625)\n---------------------------\n165n = 4125\nn = 25\n\n50o + 25(65) = 3125\n50o + 1625 = 3125\n50o = 1500\no = 30\n\nThe farmer should use 25 new packages and 30 old ones.
1038523
Several types. Read about it at http://horticulture.coafes.umn.edu/vd/h5015/99papers/kostreba.htm
751661
http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=9577937&dopt=Citation\n\nhttp://www.newstarget.com/001061.html\n\nhttp://www.pesticideinfo.org/Detail_Chemical.jsp?Rec_Id=PC35590
889342
Marigolds grow like weeds and dont need fertilizer ,\nas for the sand , mixed with the soil/potting mix will improve the drainage and allows the roots to breathe better .\nThrive is slow release fertilizer so use sparingly .\nGood luck and keep up the green thumb !!
209608
First you could look at the label and see if it contains any potentially harmful chemicals to plants, such as sodium, boron, and chlorides or mineral nutrients that plants require, such as potassium, nitrogen, phosphorus, \nmagnesium, calcium, sulfate, etc. Most detergents no longer contain high levels of phosphorus, because phosphates in detergents were once a major water pollution problem.\n\nAnother thing to do is to contact the manufacturer and ask if they have any information on its effects on plants. Many products have a toll-free phone number on the package. \n\nIf you have access to an electrical conductivity (EC) meter, an EC reading on the wash water might indicate if there was a problem with high salinity. \n\nDo a web search for gray water, because many environmentalists advocate using laundry water, bath water, etc. for plant irrigation.