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On the Relationship Between Soil Moisture and Osmotic Potential in Maize and Sugar Beet Plants
Author(s) -
Padurariu Alexandra,
Horovitz C. T.,
Paltineanu Rodica,
Negomireanu V.
Publication year - 1969
Publication title -
physiologia plantarum
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.351
H-Index - 146
eISSN - 1399-3054
pISSN - 0031-9317
DOI - 10.1111/j.1399-3054.1969.tb07443.x
Subject(s) - sugar beet , water content , agronomy , sugar , moisture , osmotic pressure , water potential , osmosis , chemistry , soil water , environmental science , botany , biology , soil science , food science , biochemistry , geotechnical engineering , organic chemistry , membrane , engineering
Investigations on the relationship between soil moisture and maize and sugar beet plant osmotic potential were carried out during three years under field trial conditions. It was established that between soil moisture and osmotic potential there is an inverse ratio dependence, expressed in significant correlation coefficients (r =−0.84** for maize and r =−0.88** for sugar beet on an average). The correlation appears more striking in the lower third of the active moisture range, where slight variations in soil moisture determine important changes in osmotic potential. The possibility of using the osmotic potential as an index in estimating plant water requirement is asserted and the limit values indicating a good water supply in maize and sugar beet plants are established according to growth stages.