Effective Soil Volume and Its Importance to Root and Top Growth of Plants

Abstract

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Response to Copper and Optimum Levels in Wheat, Barley and Oats Under Greenhouse and Field Conditions

“…Under fleld conditions the recovery of Cu was higher, ranging from 85 to 123%, and seemed to be rather erratic. Stevenson (11) postulated that when root systems afe crowded, each root interferes with the water supply of nearby roots, and water intake and growth of the whole plant are restricted. Growth of wheat was found to increase steadily with increasing soil volume ( 11 ) .…”

Growing Plants in Soilless Culture: Operational Conclusions

“…As previously mentioned, regeneration of new roots is essential for normal plant development (Stevenson, 1967). Root growth is directed by environmental cues, including touch (thigmotropism) and gravity.…”

Soil Volume and Fertilizer Effects on Growth and Nutrient Contents of Sunflower Plants

“…The nature of the relationship seems to depend in part on the normal or optimum size of the plant. Sometimes the relationship approaches direct proportionality, to a limit, especially with larger species of plants ( 1,5 In test 2 the soil volume effect on top yields was slightly smaller than in test 1, but increases were highly significant ( Table 1). The fertilizers also highly significantly increased growth, but the effect was of much smaller magnitude than the volume effect (Tables 1 and 2).…”

“…There is a definite relationship between the volume of soil available to a plant root system and the growth of that plant (1,2,4,5). The nature of the relationship seems to depend in part on the normal or optimum size of the plant.…”