Environmental Studies

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What is different about the changes that occur in the nutrient solution to be recycled within a NFT ... Started by deesands	1 Replies 11 Views	Jul 22, 2018 by bfulkerson77
At what light intensity during the day are supplemental lamps generally turned off? What will be ... Started by lracut11	1 Replies 11 Views	Jul 22, 2018 by bimper21
What are three methods for counteracting high water alkalinity? What will be an ideal ... Started by mmm	1 Replies 8 Views	Jul 22, 2018 by tuate
UV light is light below the wavelength of ________________ nm. Fill in the blank(s) with correct ... Started by BRWH	1 Replies 77 Views	Jul 22, 2018 by Viet Thy
If you were a crop production manager what would you say to your grower to teach him or her when to ... Started by stephzh	1 Replies 23 Views	Jul 22, 2018 by steff9894
What is the most common category of complete slow-release fertilizer used in the greenhouse. What ... Started by tingc95	3 Replies 43 Views	Jul 22, 2018 by pami445
The chemical most often used for pasteurization of greenhouse root substrate is _____________ It is ... Started by wrbasek0	1 Replies 43 Views	Jul 22, 2018 by Sierray
What is the problem associated with adding more water to substrate than the required amount prior to ... Started by Coya19@aol.com	1 Replies 28 Views	Jul 22, 2018 by gstein359
What fertilizer should not be incorporated into substrate prior to steam pasteurization and why? ... Started by Pea0909berry	1 Replies 34 Views	Jul 22, 2018 by jaymee143
The soluble salt level above which injury usually occurs in a 1:2 extract is What will be an ... Started by ts19998	1 Replies 19 Views	Jul 22, 2018 by honnalora
The average C02 level in the earth's atmosphere is ________ ppm yet the common level injected into ... Started by mmm	1 Replies 34 Views	Jul 22, 2018 by angrybirds13579
Why is carbon essential to plants? What will be an ideal response? ... Started by tth	1 Replies 19 Views	Jul 22, 2018 by 234sdffa
Is C02 commonly injected during the summer and why? What will be an ideal ... Started by Redwolflake15	1 Replies 9 Views	Jul 22, 2018 by manuelcastillo
Describe the nutritional problems which can arise from pasteurization and explain why these occur. ... Started by viki	3 Replies 46 Views	Jul 22, 2018 by CAPTAINAMERICA
What toxic gasses can be produced by a C02 generator and how is each prevented? What will be an ... Started by ts19998	1 Replies 37 Views	Jul 22, 2018 by kkenney
What natural condition can change the level of CO2 at which optimal plant growth occurs and how is ... Started by panfilo	1 Replies 38 Views	Jul 22, 2018 by cassie_ragen
The characteristic symptom of oxygen deficiency (over watering) is: What will be an ideal ... Started by javeds	1 Replies 23 Views	Jul 22, 2018 by ErinKing
Two good disinfectants for sterilizing tools and plastic pots are: What will be an ideal ... Started by HudsonKB16	1 Replies 29 Views	Jul 22, 2018 by joanwhite
What type of fuel can be burned in CO2 generators? What will be an ideal ... Started by Tirant22	1 Replies 28 Views	Jul 22, 2018 by fwbard
What source of CO2 is commonly used when it is not derived from a burner in greenhouses? What ... Started by Zulu123	1 Replies 37 Views	Jul 22, 2018 by shaikhs
Why is the urea form of nitrogen not sensed by an EC soluble salt meter? What will be an ideal ... Started by Jipu 123	1 Replies 23 Views	Jul 22, 2018 by izzat
What roles does perlite serve in root substrate? What will be an ideal ... Started by geoffrey	3 Replies 44 Views	Jul 22, 2018 by chereeb
When coir is partially or fully substituted for sphagnum peat moss in a root substrate what happens ... Started by vicky	1 Replies 68 Views	Jul 22, 2018 by debra928
Using the attached Table 9-10 from the text, indicate how many ounces of potassium nitrate (13-0-44) ... Started by kellyjaisingh	1 Replies 22 Views	Jul 22, 2018 by zogaridan
A 20-9-20 fertilizer product has a potential acidity value of 510 pounds of calcium carbonate ... Started by c0205847	1 Replies 30 Views	Jul 22, 2018 by bigcheese9