Results 221 to 230 of about 149,513 (264)

Dry Matter Production in a Tomato Crop: Measurements and Simulation

Annals of Botany, 1995
Abstract Simulation of dry matter production by the explanatory glasshouse crop growth model SUKAM (Gijzen, 1992, Simulation Monographs), based on SUCROS87 (Spitters, Van Keulen and Van Kraalingen, 1989, Simulation and systems management in crop protection), was validated for tomato.
E Heuvelink
exaly   +3 more sources

A Soil Water Balance and Dry Matter Production Model: II. Dry Matter Production of Oat

Agronomy Journal, 1990
AbstractA simulation study on dry matter production of oat (Avena sativa L.) was carried out on a Typic Hapludalf, at two sites near Göttingen, West Germany, during 1976,1977,1982, and 1983. The model used in this study is a Blackman‐type production model in which a maximum production level is considered.
R. Ragab, F. Beese, W. Ehlers
openaire   +1 more source

Gas production and dry matter degradability of diets for ruminants

BSAP Occasional Publication, 2006
SummaryFour feeds widely used in ruminant nutrition (corn silage, alfalfa hay, corn grain and soybean meal) and nine diets prepared in the laboratory by thorough mixing of these four feeds in different ratios, were analysed for: chemical composition according to the Weende and Van Soest schemes.
BOVERA, FULVIA, CALABRO', SERENA, SCHETTINI R., CUTRIGNELLI, MONICA ISABELLA, INFASCELLI, FEDERICO, PICCOLO V.   +5 more
openaire   +6 more sources

MODELLING DRY MATTER PRODUCTION AND PARTITIONING IN SWEET PEPPER

Acta Horticulturae, 2006
Models predicting growth and yield have been developed for a large number of crops. This paper describes a dynamic, mechanistic model for sweet pepper, addressing issues such as leaf area expansion, dry matter partitioning and validation. Leaf area formation and organ initiation are simulated as a function of temperature sum.
Marcelis, L.F.M., Elings, A., Bakker, M., Brajeul, E., Dieleman, J.A., de Visser, P.H.B., Heuvelink, E.   +6 more
openaire   +1 more source

Potential dry matter production of Miscanthus sinensis in The Netherlands

Industrial Crops and Products, 1992
Abstract The perennial C4-grass Miscanthus sinensis cv. ‘Giganteus’ is being advocated as a new biomass or fibre crop for north-western Europe. Above-ground yields of up to 40 tonnes of dry matter/ha/year have been claimed. Crop parameters of a fully-established M. sinensis stand were measured during the 1991 growing season.
van der Werf, H.M.G., Meijer, W.J.M., Mathijsen, E.W.J.M., Darwinkel, A.   +3 more
openaire   +1 more source

Photosynthesis, Respiration, and Dry Matter Production

1976
A full description of methods used in studying CO2-exchange and dry matter production is unnecessary, since a number of excellent reviews have been published on these subjects in recent years (Eckardt, 1968; Heath, 1969; Setlik, 1970; Sestak et al., 1971; Duvigneaud, 1971). With the exception of the last-named of these, the treatments pertain to plants
W. Żelawski, R. B. Walker
openaire   +1 more source

Dry-Matter Production by Evergreen Perennials

Nature, 1962
SOME years ago, Heath and Gregory1 made the generalization that the mean net assimilation-rate was constant for species and environments. Subsequent work has demonstrated some large departures from their mean value of about 0.55 g/dm2/week, although Watson2 has more recently supported the validity of their general conclusion that leaf growth is the ...
openaire   +1 more source

Dry Matter Production of Trees at Timberline

1979
In the last chapter it was shown that growth of trees declines as one approaches the timberline, resulting in reduced stature and size of plant organs. This fall-off in growth could underlie an increasing shortage of organic materials, itself a consequence of deficient primary production.
openaire   +1 more source

Dry Matter Production by Detached Ears of Wheat

Nature, 1964
CEREAL yields have been shown to depend more on assimilation in the ears and flag leaves than on translocation into the grain of compounds manufactured or stored in other green parts of the plant1. Quantitative estimates of the relative contributions from the ears, the flag leaves or other green parts have been made by shading and defoliation methods2 ...
D. S. H. DRENNAN, K. KRISHNAMURTHY
openaire   +1 more source