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- W954644452 abstract "A kutatasi program kereteben erdőmaradvanyos csernozjom talajon beallitott tragyazasi tartamkiserletekben vizsgaltuk az N, P, es K-műtragyak kombinacioinak hatasat, a foszfor utohatasat a kukoricara es az őszi buzara. A fenologiai felvetelezesek eredmenyei szerint az utohatasok vizsgalatara alkalmas parcellakon a gyenge foszfor-ellatottsag harom-ot nappal meghosszabbitotta a buza es 2-3 nappal a kukorica vegetativ periodusat. A kesőbbi kalaszolas fokozza az őszi buza aszalyerzekenyseget, ugyanakkor az elhuzodo nőviragzas a kukoricaban a szemtelitődesi periodus időtartamara hathat negativan. A P-tragyak hatasanak es ?utohatasanak vizsgalatara alkalmas, N-nel is kezelt parcellakon a betakaritott termes minősege nem kulonbozott szignifikansan a csak N-nel tragyazott, igen gyenge-gyenge P-ellatottsagu talajokon fejlődott novenyeketől. A diagnosztikai celu novenyanalizisek jol jellemeztek a novenyek taplaltsagi allapotat, ezaltal a P-utohatasok csokkenesenek is megfelelő indikatorai voltak. Erősen meszes erdőmaradvanyos csernozjom talajon a kukorica termese dikulturaban a termesztes 14., az őszi buza mennyisege a termesztes 23. evet kovetően csokkent a P-tragyazatlan kontroll szintjere. Kozepesen meszes erdőmaradvanyos csernozjom talajon a kukorica P-reakcioja a vizsgalatok 22. eveben merseklődott a kontroll szintjere. Őszi buzaban az utohatas teljes megszűnese a relativ termesekhez illesztett logaritmusfuggveny parameterei alapjan a 36. evre prognosztizalhato. | Within the framework of the project, the effect of various combinations of NPK fertilisers and the after-effect of P fertiliser were tested on maize and winter wheat grown in a long-term experiment set up on chernozem soil with forest residues. The results of phenological analysis showed that on plots suitable for the analysis of after-effects poor P supplies lengthened the vegetative period by 3?5 days in wheat and 2?3 days in maize. Later heading makes winter wheat more susceptible to drought, while protracted silking in maize may have a negative effect on the duration of the grain filling period. On plots treated with N and suitable for testing the effects and after-effects of P fertilisers the quality of the yield did not differ significantly from that of plants fertilised only with N on plots with poor or very poor P supply levels. Diagnostic plant analysis provided a clear picture of plant nutritional status and was thus a satisfactory indicator of the decline in P after-effects. On intensely calcareous chernozem soil with forest residues the maize yield in a maize?wheat diculture decreased to the level of the control plot given no P fertiliser after 14 years and that of wheat after 23 years. The P response of maize on moderately calcareous forms of this soil only decreased to the control level after 22 years. In winter wheat the after-effect could be expected to disappear completely after 36 years judging by the parameters of a log function fitted to the relative yield data." @default.
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- W954644452 date "2007-01-01" @default.
- W954644452 modified "2023-10-18" @default.
- W954644452 title "Foszfor-hatások és -utóhatások vizsgálata erdőmaradványos csernozjom talajon beállított trágyázási tartamkísérletekben = Effects and after-effects of phosphorus in long-term fertilisation experiments on chernozem soil with forest residues" @default.
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