ISSN:
1573-5036
Keywords:
greenhouse plants
;
nutrient uptake
;
relative humidity
;
transpiration
Source:
Springer Online Journal Archives 1860-2000
Topics:
Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
Notes:
Abstract Young plants of nine different greenhouse species were grown for 24 to 100 days at 55–60, 70–75, and 90–95% relative air humidity (RH) in growth rooms. They were given a complete nutrient solution twice a week. Transpiration rate decreased significantly by increasing RH from the lowest to the highest level inEuphorbia pulcherrima (60%), Begonia × hiemalis (54%), Saintpaulia ionantha (54%), Nephrolepis exaltata (48%), andLycopersicon esculentum (44%). The content of macro nutrient elements in the plant leaves decreased by increasing RH. This decrease was significant only for K and Ca in Lycopersicon and Kjeldahl-N in Nephrolepis. The content of the macro nutrient elements in the growth medium at the end of the experiment was lowest when the plants had been growing at high RH. The elements mainly affected were N and K.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF02370702
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