Search Results - "pressure"

Impacts of policies and technologies in dryland agriculture: Evidence from northern Ethiopia by Pender, J.L., Gebremedhin, Berhanu

“…Several factors commonly hypothesized to have a major impact on land management and agricultural production - including population pressure, small landholdings, access to roads and irrigation, and extension and credit programs - are found to have limited direct impact on production, though most affect the intensity of production. …”
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Precipitation over eastern South America and the South Atlantic Sea surface temperature during neutral ENSO period by Bombardi RJ, Carvalho, Leila M. V., Jones, C., Reboita MS

“…SAD phases are assessed by performing Singular value decomposition analysis of sea level pressure and SST anomalies. We show that during neutral El Niño Southern Oscillation events, SAD plays an important role in modulating cyclogenesis and the characteristics of the South Atlantic Convergence Zone. …”
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Eco-Efficiency: from vision to reality by Hershey, Clair H.

“…The concept seems especially relevant today, as leaders and organizations around the world – on the 20th anniversary of the Earth Summit – seek to renew global commitment to sustainable development against a troubling background of fragile food security and growing pressure on the environment. To foster debate and action, CIAT has prepared a major scientific publication titled Eco-Efficiency: From Vision to Reality, which is the inaugural volume in a new series called Issues in Tropical Agriculture. …”
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Recommendations for the regionalizing of coffee cultivation in Colombia: a methodological proposal based on agro-climatic indices by García López, Juan Carlos, Posada Suárez, Húver, Läderach, Peter R.D.

“…Altitude notably influenced zone differentiation, however other factors such as large air currents, low-pressure atmospheric systems, valleys of the great rivers, and physiography also played an important role. …”
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Central America: fertile ground for Eco-Efficient agriculture = América central: Suelo fértil para la agricultura Eco-Eficiente by Guimarães, Elcio Perpétuo

“…Climate change will undoubtedly intensify the pressure on natural resources in the coming decades, making it more difficult than ever to raise agricultural productivity. …”
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Release of three new Guatemalan bean varieties tolerant to golden mosaic virus by Yoshii, K., Gálvez E., Guillermo E., Temple, Steven R., Orozco, SH, Masaya, P.M.

“…In 1978, some F4 F5 and F6 selections were evaluated in preliminary yield trials with high infection pressure. In 1979 the best F7 and F8 lines were widely tested in NE, SE and S. coastal Guatemala on the basis of 50 regional trials, 3 new bean BGMV-tolerant var. were evaluated: (1) ICTA-Quetzal (Porrillo Sintifico x ICA Pijao), highly tolerant to BGMV, wide adaptation, intermediate maturity, indeterminate growth habit, bush type; (2) ICTA-Jutiapin (ICA Pijao x Turrialba-1) tolerant to BGMV, adaptable to regions at 400-1200 m art., intermediate maturity, indeterminate growth habit, bush type; and (3) ICTA-Tamazulapa (ICA Pijao x Turrialba-1) moderately tolerant to BGMV, wide adaptation, intermediate maturity, indeterminate growth habit, bush type with vines. …”
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Environmental impact assessment: theory, practice and implications for Mekong hydropower debate by Campbell, Lauren, Suhardiman, Diana, Giordano, Mark, McCornick, Peter G.

“…With partial funding from international financial institutions has come pressure on the riparian governments to ensure that the potential environmental and social impacts of hydropower projects are properly considered. …”
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The shortwave infrared bands response to stomatal conductance in Conference" Pear Trees (Pyrus communis L.)" by Struthers, R., Ivanova, A., Tits, L., Swennen, Rony L., Coppin, P.

“…In situ measurements consisting of stomatal conductance, air temperature, vapor pressure deficit and the spectral reflectance in the shortwave infrared (SWIR) regions of thirty “Conference” pear trees (Pyrus communis L.) were repeatedly measured for eighty-six days. …”
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Managing shallow aquifers in the dry zone of Sri Lanka by Sood, Aditya, Manthrithilake, Herath, Siddiqui, Salman, Rajah, Ameer, Pathmarajah, S.

“…This points to an increasing pressure on groundwater resources in the region and thus highlights the importance of understanding groundwater budgets for sustainable development of the aquifers.…”
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Impact of institutional change on irrigation management: a case study from southern Uzbekistan by Djumaboev, Kakhramon, Hamidov, A., Anarbekov, Oyture, Gafurov, Zafar, Tussupova, K.

“…The rapidly growing population in Uzbekistan has put massive pressure on limited water resources, resulting in frequent water shortages. …”
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Experimental studies on pollenmediated gene flow in Sorghum bicolor (L.) Moench using malesterile bait plants by Rabbi, Ismail Y., Parzies, H.K., Kiambi, D., Haussmann, B.I.G., Folkertsma, R.T., Geiger, H.H

“…Anther dehiscence correlated with increase in vapour pressure deficit in the morning. A negative exponential regression model with logarithmic transformation of PMGF and square-root transformation of distance from source field best fitted the data. …”
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Banana and plantain by Tripathi, L., Tripathi, J.N., Tenkouano, A., Bramel-Cox, P.J.

“…The host plant resistance is the most sustainable approach to counteracting pest and disease pressure. Transgenic technology, together with conventional methods can assist in overcoming these problems in developing improved cultivars of banana and plantain. …”
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Multidisciplinary approach to pest management and the African farmer by Okigbo, B.

“…Modern food production technologies involving more uniform crops over wide areas, use of more costly inputs and associated pest problems are ecologically less stable. With population pressure, greater pressures on the land and shortening of periods of natural recycling of nutrients reduced yields and loss of soil fertility occur. …”
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The role of agrobiodiversity in strengthening the resilience of small-scale farmers: biophysical and economic trends towards 2050 by Kozicka, M., Groot, J., Gotor, Elisabetta

“…Our results also indicate that climate change can increase vulnerability of smallholder farmers in Uganda with respect to their income, whereas banana disease can put pressure on nutrition and sustainability of production. …”
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Delayed anthelmintic treatment in cattle rearing on winter crops: a management of refugia for south Cordoba province, Argentina = Tratamiento antihelmíntico diferido en bovinos rec... by Castro, Damian Jesus Nahuel, Zurbriggen, Gabriel Alberto

“…Therefore, if treatment is applied when there is little or no refugia, selection pressure for anthelmintic resistance increases. This study aimed to compare the productive performance of cattle reared on winter crops with and without refugia, applying delayed and pre-entering anthelmintic treatment, respectively.…”
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Prospects for biological control of 'Bemisia tabaci' (Homoptera: Aleyrodidae) in greenhouses of southern Spain. by Stansly, Philip A., Urbaneja, Alberto, Piron, M.

“…Although management has relied primarily on chemical control, factors such as overlapping crop cycles, insecticide resistance and public pressure have spurred development of alternative management tactics. …”
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Application of nondestructive impedance spectroscopy to determination of the effect of temperature on potato microstructure and texture by Fuentes, Ana, Vazquez-Gutiérrez, Jose L., Pérez-Gago, María B., Vonasek, Erica, Nitin, Nitin, Barrett, Diane M.

“…Texture decreased and electrolyte leakage increased after treating potato at temperatures above 60 degrees C, indicating loss of turgor pressure and rupture of both membranes and cell walls. …”
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Variability of the coat protein gene of Citrus psorosis virus in Campania, southern Italy by Alioto, D., Malfitano, M., Troisi, A., Peluso, A., Martin, Susana, Milne, R. G., Guerri, José, Moreno, Pedro

“…The ratio between nonsynonymous and synonymous substitutions for regions C (0.083) and V (0.345) indicated negative selective pressure for amino acid changes, more intense in the C region. …”
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Osmotic and "toxic" effects of salinity on germination of Phaseolus vulgaris L. seeds by Prisco, José Tarquinio, O'leary, James W.

“…At first they depend mainly on the matrix potential of the seeds, while in the second they function from the osmotic pressure of themselves. For non-substrate water potential values ​​of -8 to 16 bars Carbowax inhibited more water absorption and root emersion than NaCl. …”
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Tryckalgometri hos friska hästar by Löfqvist, Ninnie

“…The purpose of this study was to evaluate and describe measuring of mechanical nociceptive threshold (MNT) values with a pressure algometer in clinically pain free riding horses at the riding school of Strömsholm. …”