NITROGEN LEVEL AND LIGHT INTENSITY CAN EFFECT VEGETABLE AMARANTH LEAF NUTRIENTS

Effect of Nitrogen deficiency and light intensity on the fatty acid composition of Chaetoceros calcitrans

Marine diatoms are important sources of fat and fatty acids that are considered for aquaculture and alternative energy sources, and under varying environmental conditions in algae. In order to influence the nitrogen deficiency and light intensity of the medium culture on the C.calcitrans fatty acid composition, algae was exposed to 4 nitrogen treatments (25,50,75 and 100% nitrogen) and light in...

Effect of light intensity and temperature on light-avoiding leaf movements in two Phaseolus species

Optimal Leaf-to-Root Ratio and Leaf Nitrogen Content Determined by Light and Nitrogen Availabilities

Plants exhibit higher leaf-to-root ratios (L/R) and lower leaf nitrogen content (N(area)) in low-light than in high-light environments, but an ecological significance of this trait has not been explained from a whole-plant perspective. This study aimed to theoretically and experimentally demonstrate whether these observed L/R and N(area) are explained as optimal biomass allocation that maximize...

Effect of Light Intensity on Efficiency of Carbon Dioxide and Nitrogen Reduction in Pisum sativum L.

Photosynthetic efficiency, primary productivity, and N(2) reduction were determined in peas (Pisum sativum L. var. Alaska) grown at light intensities ranging from severely limiting to saturating. Plants grown under higher light intensities showed greater carboxylation and light capture potential and higher rates of net C exchange. Uptake of N(2), computed from measured C(2)H(2) reduction and H(...

Effect of Light Intensity, Nitrogen Supply, and Fruiting on Carbohydrate Utilization by the Cotton Plant.

The objects of the present investigation were to determine the effects of light intensity and nitrogen supply upon the accumulation of carIohydrates in the cotton plant and in turn upon the utilization of carbohydrates in growth and fruiting activities. In some measure at least the American upland cotton plant differs from many agricultural plants in that from an early stage in its development,...