Elevated atmospheric CO2 can result in larger plants returning greater amounts of residue to the soil. However, the effects of elevated CO2 on carbon (C) and nitrogen (N) cycling for different soybean varieties have not been examined. Aboveground residue of eight soybean [Glycine max (L.) Merr.] varieties was collected from a field study where crops had been grown under two different atmospheri...

Materials and Methods Varieties selected for the 2004 organic soybean variety trial included the following: 6024FG (from Gold Country Seeds), IA2064, IA3017, MRK0327, MRK0330, MRK 0431, NC+2A83, NC+3A44, Pioneer 9305, Schillinger 240F.Y, Schillinger 254F.P, and Schillinger 284F.HP.Y. Plots measuring 20 × 100 feet were laid out in a completely randomized block design with four replications of ea...

Information on the economic characters was derived from ninety-two varieties of soybean. Analysis of variance was carried out for the data recorded on plant height, nodes plant, branches plant, 100-seed weight, days to 50 % flowering, days to maturity, grain yield, oil and protein content. Results revealed highly significant differences among varieties for all the characters. High heritability ...

Genetic modifications are known by many different names including gene splicing, transgenics, DNA manipulation, recombinant DNA, and genetic engineering. These terms refer to the process of isolating genes of a known function from one organism, and then transferring a copy of that gene to a new host to introduce a desirable trait. In particular, genetically modified (GM) crops have been enginee...

It is known that tofu quality tends to vary among soybeans even of the same variety. Cultivation environments can affect the contents of the soybeans. Twenty-seven soybean varieties were grown in a drained paddy field and an upland field, and then their protein and phytate contents were determined using the Fourier transfer infrared spectroscopy (FT-IR) method. The phytate contents of 12 variet...

effect of five soybean varieties (sahar, jk, bp, williams and l17) on life cycle and fecundity of the beet armyworm, spodoptera exigua (hã¼bner) was evaluated at temperature of 25 â± 1â°c, 60 â± 5% r.h. and a photoperiod of 16: 8 (l: d) h. the preimaginal development period of males and females was longest on l17 (30.17 â± 0.28 and 29.63 â± 0.23 days) and shortest on bp and sahar. the adult lon...

Previous studies have shown that the composition of glyphosate-tolerant soybeans (GTS) and selected processed fractions was substantially equivalent to that of conventional soybeans over a wide range of analytes. This study was designed to determine if the composition of GTS remains substantially equivalent to conventional soybeans over the course of several years and when introduced into multi...

The soybean aphid (Aphis glycines) has rapidly spread through the Midwest causing consistent yield losses since its introduction. In an effort to find sources of resistance to this pest, several plant introductions have been screened in controlled laboratory conditions or in few locations under field conditions. In order to better characterize different soybean resistant lines we measured resis...