The objective of the study was to quantify the effect of temperature on P and N uptake and on dry matter, P and N partition- ing during early phases of development of sorghum (Sorghum bicolor (L.) Moench). The study was carried out in a climatic chamber where sorghum plants were grown in pots containing 16.5 kg soil. Treatments were air temperatures of 21° C and 30° C, and phosphorus fertilization rates of 0 and 150 mg·pot-1 P. When the 10th leaf was fully expanded dry weight and P and N uptake of stems, leaves and roots were determined. Increase in air temperature and phosphorus rate increased dry matter weight and uptake of P and N. Increasing temperature modified dry matter and partitioning of P and N in the plant, enhancing the proportion of stems to whole plant, at the expense of leaves and roots. Stem and leaves drew greater advantage from a rise in temperature than did the roots, whereas roots drew greater advantage from availability of P than did the shoot.
|Autori interni:||MASONI, ALESSANDRO|
|Autori:||MASONI A; ERCOLI L; MARIOTTI M; MASSANTINI F|
|Titolo:||INFLUENCE OF TEMPERATURE AND PHOSPHORUS FERTILIZATION ON PHOSPHORUS AND NITROGEN UPTAKE BY SORGHUM|
|Anno del prodotto:||1994|
|Appare nelle tipologie:||1.1 Articolo in rivista|