نتایج جستجو برای: growth indices
تعداد نتایج: 894999 فیلتر نتایج به سال:
Crop biomass is a critical variable for characterizing crop growth development, understanding dry matter partitioning, and predicting grain yield. Previous studies on the spectroscopic estimation of crop biomass focused on the use of various spectral indices based on chlorophyll absorption features and found that they often became saturated at high biomass levels. Given that crop biomass is com...
in order to evaluate the effects of drought stress at different phenological stages on growth indices of chickpea (cicer arietinum l.) cultivar jam, an experiment was carried out at the research greenhouse of faculty of agriculture, ferdowsi university of mashhad, using a completely randomized design with four replications. drought stress was applied by preventing irrigation until the soil mois...
Coastal marshes depend on belowground biomass of roots and rhizomes to contribute to peat and soil organic carbon, accrete soil and alleviate flooding as sea level rises. For nutrient-limited plants, eutrophication has either reduced or stimulated belowground biomass depending on plant biomass allocation response to fertilization. Within a freshwater wetland impoundment receiving minimal sedime...
Clam spat Venerupis pullastra were fed for 4 wk on &ets of 2 species of microalgae supplied singly or mixed. Microalgae were Isochrysis galbana and Tetraselmis suecica, species normally used in bivalve hatcheries. Observed growth responses were high for mixed and I. galbana diets and intermediate for the T suecica diet. A slightly higher growth rate was obtained with the mixed diet than with th...
Background & Aim: Growth monitoring is a necessary part of routine medical health services all over the world. In growth monitoring, it is important to define standard values of growth indices for each country and human race. In this respect, the present study aimed to evaluate and determine growth indices for schoolboys and girls living in Tehran and to compare those indices with standard ...
The movement of fish in watersheds is frequently inhibited by human-made migration barriers such as dams or culverts. The resulting lack of connectivity of spatial subpopulations is often cited as a cause for observed population decline. We formulate a matrix model for a spatially distributed fish population in a watershed, and we investigate how location and other characteristics of a single m...
HIGHLIGHTS Gynogenesis didn’t have significant effect on Caspian salmon immunological indices. weren’t any blood chemical Hematological indices show changes by gynogenesis. Growth characteristics were improved gynogenesis in fish.
Yield is a quantitative trait and improving grain yield through direct selection is time-consuming. Indirect selection consisting of selection indices is more promising. A field experiment was conducted during 1999-2000 growing season in two experimental locations (Kooshkak and Badjgah) of College of Agriculture, Shiraz University, Shiraz. Thirteen corn hybrids were used in a randomized complet...
The effect replacement of various kilka fish oil with canola oil was investigated on growth indices, body composition, and digestive enzymes of Siberian sturgeon (Acipenser baerii). One hundred and eighty fry fish (22.5±2 2.09 g average weight) were fed with four isonitroginus and isolipid diets (44 and 14%) (1: 100% fish oil (FO100), 2: 100 % of canola oil (CO100), 3: 50% fish oil+50% canola o...
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