The New Encyclopaedia Britannica: Macropaedia: knowledge in depth. 19 vEncyclopaedia Britannica, Incorporated, 1981 - Encyclopedias and dictionaries |
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Page 193
... soils to develop , since the land , except in the val- ley bottoms , is not sufficiently flat over wide enough areas to allow the soil - forming ( parent ) materials to re- main in situ and thus to be thoroughly weathered . Soil problems .
... soils to develop , since the land , except in the val- ley bottoms , is not sufficiently flat over wide enough areas to allow the soil - forming ( parent ) materials to re- main in situ and thus to be thoroughly weathered . Soil problems .
Page 323
... Soil science , which deals with the geological genera- tion of soil , with soil physics , and soil chemistry , as they pertain to agriculture , and with all other factors relevant to soil fertility . 2. Plant production , which ...
... Soil science , which deals with the geological genera- tion of soil , with soil physics , and soil chemistry , as they pertain to agriculture , and with all other factors relevant to soil fertility . 2. Plant production , which ...
Page 348
Desirable soil structure The moldboar plow Seeding in narrow slits in sod Intercrop- ping as protection. Other specialized techniques Hydroponics Greenhouses III . Harvesting and crop processing Harvesting machinery Crop - processing ...
Desirable soil structure The moldboar plow Seeding in narrow slits in sod Intercrop- ping as protection. Other specialized techniques Hydroponics Greenhouses III . Harvesting and crop processing Harvesting machinery Crop - processing ...
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