Results 81 to 90 of about 168,176 (201)

Effects of thinning and mixed plantations with Alnus cordata on growth and efficiency of common walnut (Juglans regia L.)

Forest@, 2009
Results about the effects of thinning and mixed plantations with Italian alder (Alnus cordata Loisel.) on growth and efficiency of common walnut (Juglans regia L.) plantations for wood production are reported.
Giannini T, Cutini A
doaj   +1 more source

Time and energy constraints and the relationships between currencies in foraging theory [PDF]

, 2017
Measured foraging strategies often cluster around values that maximize the ratio of energy gained over energy spent while foraging (efficiency), rather than values that would maximize the long-term net rate of energy gain (rate). The reasons for this are
Beauchamp, G., Schmid-Hempel, P., Schmid-Hempel, R., Welham, C. V. J., Ydenberg, R. C.   +4 more
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Control of primary productivity and the significance of photosynthetic bacteria in a meromictic kettle lake. [PDF]

, 1989
During 1986 planktonic primary production and controlling factors were investigated in a small (A0 = 11.8 · 103 m2, Zmax = 11.5 m) meromictic kettle lake (Mittlerer Buchensee).
A. Bricaud, A. E. Walsby, A. Rebsdorf, B. Eichler, C. J. Lorenzen, C. L. M. Steenbergen, C. S. French, D. E. Caldwell, E. A. Nusch, E. J. Fee, E. Steemann-Nielsen, G. A. Dubinina, G. Ahlgren, G. J. Brunskill, H. Biebl, H. Gemerden v., J. E. Cloern, J. F. Talling, J. F. Talling, J. F. Talling, J. G. Kuenen, J. Overmann, J�rg Overmann, M. J. Perry, M. M. Tilzer, M. M. Tilzer, M. M. Tilzer, M. M. Tilzer, M. M. Tilzer, M. Takahashi, M.-E. Meffert, Max M. Tilzer, N. Caraco, R. A. Moll, R. B. Williams, R. C. Smith, R. D. Parker, R. H. Foy, R. O. Megard, R. Y. Stanier, Schanz, T. B. Parkin, T. B. Parkin, T. G. Coon, T. T. Bannister, U. Einsle, U. Einsle, Z. Dubinsky, Z. Dubinsky   +48 more
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Genotypic variation of cut chrysanthemum response to high CO2 concentration: Growth, time to flowering and visual quality [PDF]

, 2011
In this study sixteen cut chrysanthemum cultivars were used to evaluate the effects of high CO2 concentration (1500 µmol mol-1) on growth, time to flowering and visual quality as compared to the concentration used in commercial greenhouses (600 µmol mol ...
Carvalho, S.M.P., Fanourakis, D., Heuvelink, E., Maaswinkel, R.H.M.   +3 more
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The Influence of Removing Tubers on Dry-matter Production and Net Assimilation Rate of Potato Plants

Annals of Botany, 1965
To study the effect of removing tubers on growth and net assimilation rate ( E ) of potato, plants were grown in pots partly filled with soil with the shoot growing through a polythene cover. Tubers developed in the space between the cover and the soil surface.
Nosberger, J., Humphries, E. C.
openaire   +1 more source

Usage of Agaricus and Pleurotus Spent Mushroom Composts as Growth Medium in Tomato Seedling Production

Türkiye Tarımsal Araştırmalar Dergisi, 2018
The effect of growth media prepared by adding of Agaricus bisporus (A) and Pleurotus ostreatus (P) spent mushroom compost into peat (PE) at different rates (25, 50, 75 and 100%) on tomato seedling growth and quality was examined in this study.
Caner YILMAZ, Ercan SIRÇA, Harun ÖZER, Aysun PEKŞEN   +3 more
doaj   +1 more source

Photosynthesis and conductance of spring-wheat leaves: field response to continuous free-air atmospheric CO2 enrichment [PDF]

, 1998
Spring wheat was grown from emergence to grain maturity in two partial pressures of CO2 (pCO2): ambient air of nominally 37 Pa and air enriched with CO2 to 55 Pa using a free-air CO2 enrichment (FACE) apparatus.
Garcia, R.L., Kimball, B.A., Lamorte, R.L., Long, S.P., Nie, G.Y., Osborne, C.P., Pinter, P.J., Wall, G.W., Wechsung, F.   +8 more
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Zearalenone and nanozeolite improve Arugula (Eruca sativa) drought tolerance by enhancing photosynthesis and water relations

Scientific Reports
This study investigated the effects of zearalenone (ZEN) and nanozeolite (NZ) on arugula (Eruca sativa) under deficit irrigation in a controlled greenhouse environment.
Najmeh Zeinalipour, Fatemeh Galehdari, Safoora Saadati, Mohammad Javad Arvin, Mehdi Sarcheshmehpour   +4 more
doaj   +1 more source

Growth and morphology of grain sorghum hybrids cultivated in semi-arid region under pre- and post-flowering drought stress

Pesquisa Agropecuária Tropical
Drought stress is a major factor limiting sorghum yield, especially in regions with irregular rainfall. This study investigated the morphophysiological and growth responses of grain sorghum hybrids to drought stress, comparing the ...
Paulo Sérgio Cardoso Batista, Karla Jorge da Silva, Paulo César Magalhães, Arley Figueiredo Portugal, José Sebastião Cunha Fernandes, Cícero Beserra de Menezes, Abner José de Carvalho, Leonardo Nonato de Jesus   +7 more
doaj   +1 more source

A quantitative analysis of the phytoplankton of the Gulf of Panama II. On the relationship between C14 assimilation and the diatom standing crop [PDF]

, 1965
ENGLISH: The Inter-American Tropical Tuna Commission has maintained a hydro-biological station in the Gulf of Panama located at 8°45'N, 79°23'W in connection with their ecological investigation of the anchoveta (Cetengraulis mysticetus), a tuna baitfish (
Smayda, Theodore J.
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