Results 181 to 190 of about 1,328 (200)

TopCross High Oil Corn Production

Agronomy Journal, 2003
High oil corn (Zea mays L.) enhances the feed rations of livestock and poultry and reduces the need for expensive dietary supplements. The TopCross1 grain production system, which involves use of a blend (TC Blend) of two types of corn, is rapidly gaining popularity as the preferred method of producing high oil corn (HOC). Field experiments and on‐farm
P. R. Thomison, A. B. Geyer, L. D. Lotz, H. J. Siegrist, T. L. Dobbels   +4 more
openaire   +1 more source

Field Drying of TopCross High‐Oil Corn Grain

Agronomy Journal, 2001
Most high‐oil (HO) corn (Zea mays L.) grown in the USA utilizes the TopCross system, which involves planting a blend (TC Blend) of two types of corn. Field grain drying of TC Blends may be slower than normal (low oil) corn hybrids of similar maturity, which could result in later harvest or increased costs of artificial drying after harvest.
Peter R. Thomison, Allen B. Geyer, Bert L. Bishop   +2 more
openaire   +1 more source

Amino acid composition of TopCross high-oil maize grain

Plant Genetic Resources, 2003
AbstractIncreased amino acid content in high-oil maize (Zea mays L.) grain may add further value to its use in livestock rations, especially if this enhanced amino acid content is consistent across varying growing conditions. Most high-oil maize (HOM) grown in the USA utilizes the TopCross system which involves planting a blend (TC Blend) of two types ...
P. R. Thomison, D. J. Barker, A. B. Geyer, L. D. Lotz, H. J. Siegrist, T. L. Dobbels   +5 more
openaire   +1 more source

Characterization of topcross progenies from Hereford, Limousin, and Piedmontese sires.

Journal of Animal Science, 2001
Breeds of larger mature size tend to grow more rapidly and be older when attaining a given level of fatness. Hereford, Limousin, and Piedmontese are of approximately equal mature size and yet may vary in body composition at a given degree of maturity. However, direct comparisons among these three breeds were not found.
M D, MacNeil, R E, Short, E E, Grings
openaire   +2 more sources

Early‐Season Defoliation Effects on TopCross High‐Oil Corn Production

Agronomy Journal, 2005
High‐oil corn (Zea mays L.) produced with the TopCross grain production system is planted as a physical mixture (a TC Blend) containing 91% high‐yielding, male‐sterile hybrid (grain parent) seed and 9% pollinator seed. Field experiments were conducted at two locations in Ohio in 1999 and 2000 to determine if high‐oil corn (HOC) TC Blends are more ...
T. F. Mangen, P. R. Thomison, S. D. Strachan   +2 more
openaire   +1 more source

Heterotic Effects in Topcrosses of Modern and Obsolete Cotton Cultivars

Crop Science, 2008
Historically, reselection, pedigree, and mass‐selection breeding methods have been used to develop open‐pollinated cultivars of upland cotton (Gossypium hirsutum L.). As a result, modern cotton cultivars should have accumulated additive genetic effects with time, while also possessing fewer nonadditive gene effects than obsolete cultivars.
B. T. Campbell, D. T. Bowman, D. B. Weaver   +2 more
openaire   +1 more source

Topcross hybrids in papaya: Genes derived from backcrossing provide resistance to multiple diseases

Crop Protection, 2020
Abstract Papaya (Carica papaya L.) is widely cultivated and consumed in tropical and subtropical regions of the world. However, a number of diseases prevent the expansion of the crop, the two most prominent of which are ‘black spot’ and ‘phoma spot’. Considering the increasing market demand for fruits free of agrochemical residues, genetic resistance
Tathianne Pastana de Sousa Poltronieri, Silvaldo Felipe da Silveira, Marcelo Vivas, Renato Santa-Catarina, Alinne Oliveira Nunes Azevedo, Pedro Henrique Dias dos Santos, Julio Cesar Fiorio Vettorazzi, Helaine Christine Cancela Ramos, Messias Gonzaga Pereira   +8 more
openaire   +1 more source

Defoliation Affects Grain Yield, Protein, and Oil of TopCross High‐Oil Corn

Crop Management, 2003
The TopCross grain production system, in which about 90 percent of the plants in a corn (Zea mays L.) field are male‐sterile and the remainder serves to transmit the high‐oil character through pollen, is widely used to produce high‐oil corn (HOC). In the TopCross system, two types of corn are planted as a physical mixture (a TC Blend).
Peter R. Thomison, Emerson D. Nafziger
openaire   +1 more source

Predicting topcrossing performance of inbred and selection lines of beef cattle

2019
Ph. D.
openaire   +2 more sources

Studies on the Topcross Method

Acta Agriculturae Scandinavica, 1978
K. J. Frandsen, Bj⊘rn Ivar Honne, Gösta Julén   +2 more
openaire   +1 more source