in the present study, the root vigor and kinetic characteristics of nitrogen absorption in potato cultivars was investigated through sand cultivation and pot tests with nutrient solution. four cultivars of potatoes, namely, feiwuruita, yunshu301, liangshu97, and chuanyu56 were grown in nutrient solution matrix cultures. the result showed that: (1) nitrogen uptake rates differed significantly am...

cated no differences (P > 0.10) between the corn rootworm protected corn and non-transgenic control corn for nitrogen intake (0.04 versus 0.04 lb/d), nitrogen digested (0.03 versus 0.03 lb/d), nitrogen retained (0.01 versus 0.01 lb/d), or nitrogen digestibility (77.30 versus 78.30%), respectively. The results of this experiment indicate that energy and nitrogen utilization are similar between d...

Biotechnology Research Institute, Chinese Academy of Agricultural Sciences, Beijing 100081, People’s Republic of China (L.J., Y.L., H.S., Y.H., W.G., H.M., S.L., Y.F., C.Z.); National Key Facility for Crop Gene Resources and Genetic Improvement, Beijing 100081, People’s Republic of China (L.J., Y.F., C.Z.); Beijing Institute of Pharmacology and Toxicology, Beijing 100850, People’s Republic of C...

in order to investigate the effects of different levels of nitrogen rate on yield and seed yield components of wheat cultivars, an experiment was conducted on araghi mahalleh (gorogan) research farm in 2008. treatments, nitrogen in the form of urea (0, 90, 180 and 270 kg/ha) and cultivars (tajan, falat and n81-18) were arranged as factorial based on randomized complete block design with four re...

I . Twenty herbages at different stages of maturity containing from 0.77 to 5.23 g nitrogen/ 100 g organic matter were harvested, and green herbages were rapidly frozen and stored at 1.5’. Each herbage was offered at levels approximating to ad lib. to a group of three sheep, individually penned. Intake, digestion and retention of N were studied during a 10 d collection period after a 9 d prelim...

The Bacillus subtilis outB gene was found to have strong similarities to an Escherichia coli gene complementing ntr-like mutations in Rhodobacter capsulatus. The deduced gene products had 52% identical amino acids (65% similar residues). The phenotype of strains affected in the OutB function indicates that this B. subtilis gene may be involved in nitrogen utilization.

The efTect of photosynthetic photon flux density (PPFD) on nitrogen utilization was determined in peas (Pisum sativum L. cv. Alaska) inoculated with Rhizobium leguminosarum and treated with nutrient solutions containing no combined nitrogen, 16 mM NOj", or 16 mM N H / . Plants were grown under controlled conditions at three PPFD values ranging from severely limiting to nearly saturating. Carbox...

the aim of this study was to evaluate the effects of tannic acid (ta) and pistachio by-product tannin extract (pbe) on n utilization and efficiency of microbial nitrogen synthesis (emns) in saanen dairy goats. the experimental design was a change over design with three treatments and three periods using six mid lactation multiparous dairy goats. tannic acid solution and pbe were added to fresh ...