The Theory and Practice of Horticulture: Or, An Attempt to Explain the Chief Operations of Gardening Upon Physiological GraoundsLongman, Brown, Green, and Longmans, 1855 - 606 من الصفحات |
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الصفحة xiv
... TEMPERATURE . Limits of Temperature endurable by Plants . - Effects of a too high Tempe- rature of a too low Temperature . - Frost . - Alternations of Tempera- ture . - Day and Night . - Winter and Summer . - Temperature of Earth and ...
... TEMPERATURE . Limits of Temperature endurable by Plants . - Effects of a too high Tempe- rature of a too low Temperature . - Frost . - Alternations of Tempera- ture . - Day and Night . - Winter and Summer . - Temperature of Earth and ...
الصفحة 15
... temperature but little above 32 ° Fahr . It has been imagined that ELECTRICAL ACTION also promotes the germination of seeds . Sir H. Davy found that seeds placed in the vicinity of the positive pole of a voltaic pile , germinated sooner ...
... temperature but little above 32 ° Fahr . It has been imagined that ELECTRICAL ACTION also promotes the germination of seeds . Sir H. Davy found that seeds placed in the vicinity of the positive pole of a voltaic pile , germinated sooner ...
الصفحة 64
... temperature ; and he satisfied himself fully that the effects observed did result entirely from the action of the rays of light from the moon . Without entering into minute details , it is sufficient to say that the results were ...
... temperature ; and he satisfied himself fully that the effects observed did result entirely from the action of the rays of light from the moon . Without entering into minute details , it is sufficient to say that the results were ...
الصفحة 100
... temperature . It is found that among the effects of a high temperature and an exposure to bright light is the production of sugar and of certain flavours ; and that under opposite circumstances , acidity prevails . In this respect ...
... temperature . It is found that among the effects of a high temperature and an exposure to bright light is the production of sugar and of certain flavours ; and that under opposite circumstances , acidity prevails . In this respect ...
الصفحة 102
... temperature to which the plants were exposed , was occasionally below 40 ° , no injury was sustained by them . The cold winds were kept off by banks thrown up across the prevailing currents . The want of a sufficient amount of earth ...
... temperature to which the plants were exposed , was occasionally below 40 ° , no injury was sustained by them . The cold winds were kept off by banks thrown up across the prevailing currents . The want of a sufficient amount of earth ...
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absorb action alburnum appears atmosphere autumn bark bear become blossom-buds branches buds bulb calyx carbonic acid carpels cause cellular Chiswick chloroform circumstances cold colour consequence crop cultivated damp degree dryness earth effect employed epidermis evaporation experiments exposed fact favourable feet flowers fluid formation formed fruit gardener germination grafting ground grow growth healthy herbaceous horizontal Hort Horticultural Horticultural Society hygrometer inches increased injury leaf leaf-buds leaves ligature light loam matter mean temperature mode moisture mucilage nature night observed operation organs Peach Pear peat perish perspiration Pine-apple pistil plants pollen portion pots practice produced propagation proportion pruning quantity removed Rhododendrons ripening roots scion season seeds sepals shortened soil species spring stamens stem substance sufficient summer surface temperature thermometer timber tissue trees vapour varieties vegetation vigour Vine vitality Wardian warm winter wood wound