Zobrazeno 1 - 10
of 116
pro vyhledávání: '"D. Wulfsohn"'
Publikováno v:
Acta Horticulturae. :153-157
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::09d1fe35e61158ba1e27f7c20db20fc1
https://doi.org/10.17660/actahortic.2012.965.19
https://doi.org/10.17660/actahortic.2012.965.19
Autor:
Camilla Potin Téllez, Ines Zamora Lagos, Marta García-Fiñana, Felipe Aravena Zamora, D. Wulfsohn
Publikováno v:
Precision Agriculture. 13:256-275
Early forecasting of fruit orchard yield is important for market planning and for growers and exporters to plan labour, bins, storage and purchase of packing materials. Large variations in tree yield pose a challenge for accurate yield estimation. We
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::11d7c80638b9fc94e270c39069e9e8a5
https://doi.org/10.1007/s11119-011-9245-2
https://doi.org/10.1007/s11119-011-9245-2
Autor:
A. Paraskevopoulos, Spyros Fountas, K. Aggelopoulou, George D. Nanos, D. Wulfsohn, M. Galanis, T. A. Gemtos, C. Bouloulis
Publikováno v:
Precision Agriculture. 12:179-195
Yield and soil mapping were carried out in 2007 and 2008 in a 9.1 ha commercial olive tree plantation for olive oil production. The orchard is in the southern Peloponnese, where olives are cultivated extensively for extra virgin olive oil production.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::265c0f9b8de896aa43e78188854ef657
https://doi.org/10.1007/s11119-010-9167-4
https://doi.org/10.1007/s11119-010-9167-4
Publikováno v:
Precision Agriculture. 11:538-556
We describe the yield and quality of apples from a 0.8 ha apple orchard located in northern Greece over two growing seasons and consider the potential for site-specific management. The orchard has two apple cultivars: Red Chief (main cultivar) and Fu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::07566e066a02559910a3140363c08c81
https://doi.org/10.1007/s11119-009-9146-9
https://doi.org/10.1007/s11119-009-9146-9
Publikováno v:
Plant and Soil. 327:167-184
Grain legumes such as field pea are known to have high variability of yield and dinitrogen (N2) fixation between seasons, but less is known about the yearly spatial variability within a field. The objective of this study was to improve the understand
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::296591f6830d19a62989b46e9978a10b
https://doi.org/10.1007/s11104-009-0043-9
https://doi.org/10.1007/s11104-009-0043-9
Publikováno v:
Biometrics. 66:159-168
Summary We describe a stereological procedure to estimate the total leaf surface area of a plant canopy in vivo, and address the problem of how to predict the variance of the corresponding estimator. The procedure involves three nested systematic uni
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::741cf64f8eb4c6eeae5c0c59c2ad579d
https://doi.org/10.1111/j.1541-0420.2009.01237.x
https://doi.org/10.1111/j.1541-0420.2009.01237.x
Autor:
Hans W. Griepentrog, Simon Blackmore, D. Wulfsohn, Spyros Fountas, M. Kyhn, H. Lipczak Jakobsen
Publikováno v:
Precision Agriculture. 10:247-261
A systems analysis and design of information requirements for an experimental farm is presented. This study was carried out on the university farm (UF) at the University of Copenhagen in Denmark. The UF has several farm sites, many employees and clie
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8a2e421392ff23b040e09560f3592976
https://doi.org/10.1007/s11119-008-9098-5
https://doi.org/10.1007/s11119-008-9098-5
Autor:
D. Wulfsohn, U. A. Rosa
Publikováno v:
Biosystems Engineering. 99:444-454
A monorail test system has been developed for studying the draught and power performance of narrow tillage tools operating at high speeds. The system is retrofitted to a small 10-m long linear soil bin, yet is capable of maintaining target tool speed
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b6e1bafdfdd9c733ffee24eafeb3b97f
https://doi.org/10.1016/j.biosystemseng.2007.11.010
https://doi.org/10.1016/j.biosystemseng.2007.11.010
Autor:
D. Wulfsohn, G. M. Maletti
Publikováno v:
ResearcherID
Summary We compared the performance of several models for predicting, from small samples, the precision of estimates of the total number of blossoms on fruit trees obtained using a three-stage fractionator, in which the sampling units were defined by
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c372330b65eab7dcdace77cb8ab0adc3
https://doi.org/10.1111/j.1365-2818.2006.01590.x
https://doi.org/10.1111/j.1365-2818.2006.01590.x
Publikováno v:
Agricultural Systems. 87:192-210
This paper describes the development of a systems based model to characterise farmers’ decision-making process in information-intensive practices, and its evaluation in the context of Precision Agriculture (PA). A participative methodology was deve
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::83b42cc5da06f95330ab0207c92bdedd
https://doi.org/10.1016/j.agsy.2004.12.003
https://doi.org/10.1016/j.agsy.2004.12.003