OVREDNOTENJE PRIDELKA KOMBINIRANEGA GOJENJA KURKUME IN ZLATE VINJE GLEDE NA MEDSEBOJNO KOMPETICIJIO

Mohamaed ISLAM, Mohammad ALAM, Ayman EL SABAGH, Celaleddin BARUTÇULAR, Disna RATNASEKERA, Ferhat KIZILGEÇI, M. Sohidul ISLAM

Povzetek


Povečanje učinkovitosti izrabe kmetijskih površin za večji pridelek je pomembno za prehranjevanje naraščajoče človeške populacije. Medsadnja kurkume v posevke zlate vinje (zelenega mungo fižola, Vigna radiata (L.) R. Wilczek) v optimalnih gostotah lahko poveča učinkovitost izrabe površin. Ekvivalent zemljišča (LER) je bil večji od 1 v vseh sistemih mešanega gojenja. Poskus z mešanim gojenjem omenjenih poljščin je bil izveden v sezonah 2014 in 2015 z različnimi kombinacijami kurkume in zlate vinje na Regional Agricultural Research Station, Bangladesh Agricultural Research Institute, Ishwardi, Pabna, Bangladesh. Namen raziskave je bil ugotoviti učinkovitost in gospodarnost takšne pridelave v povezavi s tekmovalnostjo med obema poljščinama. Poskus je temeljil na naključnem bločnem razporedu s tremi ponovitvami. Obravnavanja so bila ovrednotena na osnovi različnih kompeticijskih funkcij kot so ekvivalent zemljišča (LER), agresivnost, kompeticijsko razmerje (CR), denarni indeks (MAI) in sistemski produktivnostni indeks (SPI). Rezultati so pokazali, da je bil pridelek korenik kurkume večji v vseh sistemih z medposevki kot v čisti sadnji. Pokazali so tudi, da kombinirano gojenje z zlato vinjo ni povzročilo zmanjšanja pridelka korenik kurkume. Površine z vrstami čiste kurkume (100 %), kombiniranimi s trovrstnimi pasovi zlate vinje (100 %) so imele večji pridelek obeh poljščin kot tudi največje vrednosti za ekvivalent pridelka, LER, kompeticijski indeks, SPI in MAI (Tk. 2,44,734.46 ha-1) za kurkumo v primerjavi z drugimi sistemi mešanega gojenja in čistimi kulturami. Analiza agresivnosti pri različnih kombinacijah mešanega gojenja je pokazala prevlado kurkume nad zlato vinjo v vseh kombinacijah, razen v sistemu, kjer je bil nasad kurkume (100 %), kombiniran s po eno vrsto zlate vinje (33 %). Kompeticijske funkcije mešanih načinov gojenja so pokazale, da je glede na pozitiven učinek smiselno kombinirati omenjeni poljščini. Raziskava je pokazala, da bi se zlata vinja lahko uvedla kot medkultura kurkume, ne da bi zmanjašala pridelek njenih korenik, hkrati pa bi to predstavljalo dodatno možnost povečanja površin za pridelavo zlate vinje.

Ključne besede


kompeticijske funkcije; gospodarnost; medposevki; kurkuma; zlata vinja

Celotno besedilo:

PDF (English)

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DOI: http://dx.doi.org/10.14720/aas.2018.111.1.19

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