Search Results - "Lamers, J.P.A."

The added value of a water footprint approach: Micro- and macroeconomic analysis of cotton production, processing and export in water bound Uzbekistan by Rudenko, I., Bekchanov, M., Djanibekov, U., Lamers, J.P.A.

“…Since independence from the former Soviet Union in 1991, Uzbekistan is challenged to consolidate its efforts and identify and introduce suitable agricultural…”
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The dynamics of groundwater table and salinity over 17 years in Khorezm by Ibrakhimov, Mirzakhayot, Martius, Christopher, Lamers, J.P.A., Tischbein, Bernhard

“…► Groundwater levels in Khorezm, Uzbekistan are shallow both spatially and seasonally. ► Effects of canals, drains, soil texture and topography are not…”
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Tree establishment under deficit irrigation on degraded agricultural land in the lower Amu Darya River region, Aral Sea Basin by Khamzina, A., Lamers, J.P.A., Vlek, P.L.G.

“…Degraded land within the irrigated areas of the Aral Sea Basin is characterized by high soil salinity, shallow saline groundwater (GW), low irrigation water…”
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The emerging small-scale cattle farming sector in Uzbekistan: Highly integrated with crop production but suffering from low productivity by Siegmund-Schultze, M., Rischkowsky, B., Yuldashev, I., Abdalniyazov, B., Lamers, J.P.A.

“…Even two decades after independence in 1991, the agricultural sector of Uzbekistan remains regulated by the government, prescribing the number of cattle head…”
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Transpiration and early growth of tree plantations established on degraded cropland over shallow saline groundwater table in northwest Uzbekistan by Khamzina, A., Sommer, R., Lamers, J.P.A., Vlek, P.L.G.

“…This study examined the early growth and water use of tree plantations established on a marginalized irrigated cropland in northwest Uzbekistan, where…”
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Conservation Agriculture for combating land degradation in Central Asia: a synthesis by Nurbekov, A., Akramkhanov, A., Kassam, A., Sydyk, D., Ziyadaullaev, Z., Lamers, J.P.A.

“…This manuscript reviews scientific findings on agricultural systems, associated land degradation and selected remedies such as Conservation Agricultural (CA)…”
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Measuring rural settlement expansion in Uzbekistan using remote sensing to support spatial planning by Conrad, C., Rudloff, M., Abdullaev, I., Thiel, M., Löw, F., Lamers, J.P.A.

“…Population growth demands sustainable spatial planning strategies for settlements in Uzbekistan, Central Asia, especially in rural areas that are inhabited by…”
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Managing soil salinity with permanent bed planting in irrigated production systems in Central Asia by Devkota, M., Martius, C., Gupta, R.K., Devkota, K.P., McDonald, A.J., Lamers, J.P.A.

“…•Under current conventional practices, soil salinity in irrigated arid lands will increase.•Soil salinity on top of the beds can be increased over time, when…”
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Tillage and nitrogen fertilization effects on yield and nitrogen use efficiency of irrigated cotton by Devkota, M., Martius, C., Lamers, J.P.A., Sayre, K.D., Devkota, K.P., Vlek, P.L.G.

“…•Intensive soil tillage is not necessary for cotton cultivation in irrigated arid lands.•Cover crop in cotton mono-cropping systems can increase the efficiency…”
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Simulating the impact of water saving irrigation and conservation agriculture practices for rice–wheat systems in the irrigated semi-arid drylands of Central Asia by Devkota, K.P., Hoogenboom, G., Boote, K.J., Singh, U., Lamers, J.P.A., Devkota, M., Vlek, P.L.G.

“…•CERES rice and wheat models can simulate water saving irrigation and CA-practices.•Rice yield was higher under conventional than under AWD irrigation and…”
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Analysing irrigated crop rotation patterns in arid Uzbekistan by the means of remote sensing: A case study on post-Soviet agricultural land use by Conrad, C., Lamers, J.P.A., Ibragimov, N., Löw, F., Martius, C.

“…In Central Asia, actual cotton rotation practices are repeatedly believed to resemble “Soviet cropping conditions” with continuous cotton sequences of six…”
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Conservation agriculture in Central Asia—What do we know and where do we go from here? by Kienzler, K.M., Lamers, J.P.A., McDonald, A., Mirzabaev, A., Ibragimov, N., Egamberdiev, O., Ruzibaev, E., Akramkhanov, A.

“…► Farmers’ CA practices in rainfed parts do not always comply with those worldwide. ► CA in the irrigated areas is hardly practiced by farmers. ► The diverse…”
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Water use efficiency of irrigated cotton in Uzbekistan under drip and furrow irrigation by Ibragimov, Nazirbay, Evett, Steven R., Esanbekov, Yusupbek, Kamilov, Bakhtiyor S., Mirzaev, Lutfullo, Lamers, John P.A.

“…The main goal of this research was to measure cotton water use, and to determine irrigation water scheduling parameters associated with optimal seed-lint yield…”
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Soil salinity management on raised beds with different furrow irrigation modes in salt-affected lands by Devkota, M., Gupta, R.K., Martius, C., Lamers, J.P.A., Devkota, K.P., Sayre, K.D., Vlek, P.L.G.

“…•Soil salinity on top of raised beds increases if irrigation is applied to every furrows compared to PSFI system.•Permanent skip furrow irrigation (PSFI)…”
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Combining permanent beds and residue retention with nitrogen fertilization improves crop yields and water productivity in irrigated arid lands under cotton, wheat and maize by Devkota, M., Martius, C., Lamers, J.P.A., Sayre, K.D., Devkota, K.P., Gupta, R.K., Egamberdiev, O., Vlek, P.L.G.

“…•Intensive soil tillage is not necessary for crop cultivation in arid lands of Central Asia.•Permanent bed (PB) can save 12–23% irrigation water over…”
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Remote sensing and hydrological measurement based irrigation performance assessments in the upper Amu Darya Delta, Central Asia by Conrad, C., Dech, S.W., Hafeez, M., Lamers, J.P.A., Tischbein, B.

“…•We assessed irrigation performance in Khorezm, Uzbekistan, at regional scale.•We combined remote sensing with hydrological measurements.•Water withdrawals of…”
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Reducing topsoil salinity and raising carbon stocks through afforestation in Khorezm, Uzbekistan by Hbirkou, C., Martius, C., Khamzina, A., Lamers, J.P.A., Welp, G., Amelung, W.

“…Agricultural mismanagement of irrigated drylands results in severe soil degradation. Afforestation is an option for ameliorating such degraded land. We…”
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Farm Restructuring and Land Consolidation in Uzbekistan: New Farms with Old Barriers by Djanibekov, Nodir, van Assche, Kristof, Bobojonov, Ihtiyor, Lamers, John P.A.

“…In this article we investigate the potential for and limitations of land consolidation as a tool for rural development in transitional environments, focusing…”
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Growth and yield of rice (Oryza sativa L.) under resource conservation technologies in the irrigated drylands of Central Asia by Devkota, K.P., Manschadi, A.M., Lamers, J.P.A., Humphreys, E., Devkota, M., Egamberdiev, O., Gupta, R.K., Sayre, K.D., Vlek, P.L.G.

“…•Alternate wetting and drying (AWD) water management reduced irrigation input by 70% compared to the present practice of continuous flooding.•There was yield…”
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Comparative advantages of conservation agriculture based rice–wheat rotation systems under water and salt dynamics typical for the irrigated arid drylands in Central Asia by Devkota, K.P., Lamers, J.P.A., Manschadi, A.M., Devkota, M., McDonald, A.J., Vlek, P.L.G.

“…•Reduction in system yields and gross margins (GMs) farmers are not sufficiently incentivized to adopt double no-till CA-based practices in rice–wheat…”
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