Obravnavanje s huminsko kislino in borom za oblažitev solnega stresa pri meloni

Osama Abd El-Salam SHALABY, Mohamed Moustafa EL-MESSAIRY

Povzetek


Slanostni stres je eden izmed najpomembnejših abiotskih stresnih dejavnikov, ki omejuje rast in produktivnost rastlin in prehranjenost rastline je prvi člen v odportnosti proti temu stresu. V ta name je bil izveden faktorski poskus za preučevanje učinkov talnega dodajanja huminske kisline (0, 7, 14, 21 l.ha-1) in foliarnega škropljenja z borom (0, 50, 100 ppm) ter njune interkacije na rast in pridelek melon v razmerah slanostnega stresa. Na osnovi rezultatov priporočamo talno uporabo huminske kisline in foliarno škropljenje z borom za uspešno odpravo škodljivih učinkov solnega stresa na rast in pridelek melon. Huminska kislina (21 l ha-1) ali škropljenje z borom (50 ppm) sta izboljšala rast in pridelek melon preko naslednjih dejavnikov: dolžine rastlin, njihove sveže in suhe mase, vsebnosti klorofila (SPAD), mase plodov, pridelka, vsebnosti hranil v listih (N in K) in celokupne vsebnosti topnih snovi v plodovih (TSS), ob hkratnem zmanjšanju vsebnost natrija v listih. Kombinirano obravnavanje s huminsko kislino (21 l.ha-1) in škropljenje z borom (50 ppm) se je izkazalo za bolj učinkovito. Pridelek melon je bil v razmerah slanosti v primerjavi s kontrolo za 21 % večji.

Ključne besede


melona; solni stres; huminska kislina; foliarno škropljenje z borom

Celotno besedilo:

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Literatura


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DOI: http://dx.doi.org/10.14720/aas.2018.111.2.10

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