The Encyclopedia Americana: The International Reference Work, Volume 7Americana Corporation, 1960 - Encyclopedias and dictionaries |
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Page 114
... plants can be considered here . Cotton needs a mean annual temperature greater than 60 ° F . , 180 to 200 days without frost , and a mean annual rainfall of 20 to 75 inches . Sunshine is necessary , especially during the bloom- ing ...
... plants can be considered here . Cotton needs a mean annual temperature greater than 60 ° F . , 180 to 200 days without frost , and a mean annual rainfall of 20 to 75 inches . Sunshine is necessary , especially during the bloom- ing ...
Page 328
... plants . Internal Nutriment : This is an important fac- tor in anthocyanin production . In 1899 it was shown that aquatic plants like frog's bit and bladderwort , grown in weak sugar solution , turned red , and later experiments with ...
... plants . Internal Nutriment : This is an important fac- tor in anthocyanin production . In 1899 it was shown that aquatic plants like frog's bit and bladderwort , grown in weak sugar solution , turned red , and later experiments with ...
Page 329
... plants , the anthocyanins , do not operate individually ; the plant is affected by all or many of them simul- taneously . Nutriment , for instance , is controlled by light , by temperature , by moisture , and by available phosphorus and ...
... plants , the anthocyanins , do not operate individually ; the plant is affected by all or many of them simul- taneously . Nutriment , for instance , is controlled by light , by temperature , by moisture , and by available phosphorus and ...
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19th century agricultural altitude American anthocyanins anthracite army Battle became Bituminous bituminous coal blue Bogotá British called cent century Church Clark clay Cleveland climate Club coal coast cobalt Cochinchina coeducational coelacanths coffee coins coke College colloidal Colombia colonies color Colorado Columbia Columbus comet comic books commerce Confederate Congress County seat Department East elected England English established federal feet forces France French Germany Henry History important Indian industry Island John June known land later latitudes Lignite London manufacturing ment miles mines North Ocean Ohio operation organized oven Paris period plants president railroad region River Roman served ship South Southern species square miles temperature theater tion tons town trade transportation Union United University Valle del Cauca vessels William World War II yellow York