Techniques are described for quantitatively determining water movement and loss in pricklypear plants with tritiated water. Transpired vapor from plants which were injected with tritium was collected with a system that passed dry air over the pad surface and into collecting vials. Water was extracted from tissue samples by a modified freeze—drying technique. Combustion of tissue samples following extraction showed that the method was efficient for tritiated water recovery from the plant material when the extraction time was 8 hours and a warm—water bath temperature of 55°C was maintained.
The purpose of this study was to determine the effects of different times of clipping on the yield a11d carbohydrate content of seeded blue grama (Bouteloua gracilis) and side c1ts grama (Bouteloua curtipendula)
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