Zobrazeno 1 - 6
of 6
pro vyhledávání: '"Hans-Peter Liebig"'
Publikováno v:
Advances in Optical Technologies. 2008:1-8
Numerous models have been developed for calculating optimum decision rules for nitrogen fertilization based on remote sensing techniques. New technologies related to digital image analysis may provide an alternative method to estimate nutrient status
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::eaed1ad448cdc6d034cc81294b037f25
https://doi.org/10.1155/2008/359760
https://doi.org/10.1155/2008/359760
Publikováno v:
Communications in Soil Science and Plant Analysis. 35:1725-1740
Advanced nitrogen (N) advisory systems require target values of N supply for the crop and the results of soil testing for inorganic nitrogen (N min) before cultivation and estimates of N release from mineralization. Two field experiments with differe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bcf312cf4ab33bee007b668a72c85cac
https://doi.org/10.1081/css-120038565
https://doi.org/10.1081/css-120038565
Publikováno v:
Gesunde Pflanzen. 54:105-110
Empoasca decipiens Paoli (Homoptera: Cicadellidea) gewann 1996 auf der Insel Reichenau (Deutschland, Baden-Wurttemberg) in den Gewachshausgurkenkulturen als neue Schadlingsart an Bedeutung. Die Zikadenart gehort zu den heimischen Zwergzikaden und ver
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7a891242ba0b24dd0fe4db12b2b774ac
https://doi.org/10.1046/j.1439-0345.2002.02023.x
https://doi.org/10.1046/j.1439-0345.2002.02023.x
Publikováno v:
Chen, Q, Zhang, H Y, Li, X L, Christie, P, Horlacher, D & Liebig, H P 2005, ' Use of a modified N-expert system for vegetable production in the Beijing region ' Journal of Plant Nutrition, vol 28, no. 3, pp. 475-487 . DOI: 10.1081/PLN-200049184
A series of field experiments were conducted over a three-year period to test a modified N-Expert system (the decision support system for nitrogen recommendations) with different irrigation regimes for a rotation of amaranth (Amaranthus tricolor L.),
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c829b49488bfd7e2a2cd0c3341b62d4b
Autor:
Dieter Horlacher, Hans-Peter Liebig, Qing Chen, Hongyan Zhang, Peter Christie, Xiaolin Li, Xiao-Sheng Zhang
Publikováno v:
Chen, Q, Zhang, X S, Zhang, H Y, Christie, P, Li, X L, Horlacher, D & Liebig, H P 2004, ' Evaluation of current fertilizer practice and soil fertility in vegetable production in the Beijing region ' Nutrient Cycling in Agroecosystems, vol. 69, no. 1, pp. 51-58 . DOI: 10.1023/B:FRES.0000025293.99199.ff
A survey on current fertilizer practices and their effects on soil fertility and soil salinity was conducted from 1996 to 2000 in Beijing Province, a major vegetable production area in the North China Plain. Inputs of the major nutrients (NPK) and fe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::838c312359101dd7da93269aa721fcfd
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