Gnojidba cv. Plavac mali (Vitis vinifera L.), prinos grožđa i kakvoća mošta

Autor: Nikola Mirošević, Bernard Kozina, Jasminka Karoglan Kontić, Edi Maletić
Jazyk: chorvatština
Rok vydání: 2001
Předmět:
Zdroj: Agriculturae Conspectus Scientificus
Volume 66
Issue 4
ISSN: 1331-7776
1331-7768
Popis: S ciljem utvrđivanja optimalnog vremena gnojidbe, odnosno pojedinih hraniva i njihova utjecaja na prirod i kakvoću cv. Plavac mali (V. vinifera L.) postavljen je pokus u krškim uvjetima Blatskog polja na Korèuli. Pokus je postavljen po slučajnom rasporedu s pet varijanti u pet ponavljanja. Varijante su slijedeće: K - bez gnojidbe A - 500 kg/ha NPK (7:14:21) u jesen B - 500 kg/ha NPK (7:14:21) + 100 kg superfosfata (16%) u jesen C - 500 kg/ha NPK (7:14:21) + 100 kg superfosfata (16%) u proljeće D - 500 kg/ha NPK (7:14:21) + 100 kg superfosfata (16%) + 100kg/ha KAN (27%) u proljeće Tijekom istraživanja (1988 . 1997) najveći prosječeni prinos grožđa po trsu dobiven je u varijanti D (2,16 kg), a najniži u varijanti K (1,59 kg). Koncentracija sladora od 16,52% i 16,55% utvrđena je u varijantama K i A, nešto niža u varijantama B i C (16,44% i 16,26%), a najniža u varijanti D s 15,84%. Koncentracija ukupnih kiselina neznatno je rasla od varijante K (5,99 g/l) prema varijanti D (6,59 g/l). Temeljem iznesenih podataka možemo konstatirati da je gnojidba pozitivno utjecala na prirod i kakvoću grožđa. Obzirom na prirod grožđa najbolje rezultate pokazale su varijante C i D, u kojima je gnojidba provedena u proljeće.
In order to determine optimal fertilisation (timing, nutrients and quantity of fertiliser) and their influence on yield and quality of the cv. Plavac mali (V. vinifera L.), an experiment has been carried out in the karst conditions of Blatsko polje on the island of Korèula. The trial included five variants of fertilisation in five repetitions. The variants were as follows: K - without fertilisation; A - NPK (7:14:21) 500 kg/ha in autumn; B - NPK (7:14:21) 500 kg/ha in autumn + 100 kg superphosphate (16%); C - NPK (7:14:21) 500 kg/ha in spring + 100 kg superphosphate (16%); D - NPK (7:14:21) 500 kg/ha in spring + 100 kg superphosphate (16%) + KAN (27%) 100 kg/ha. In the ten years trial (1988-1997) the highest average yield per vine has been obtained in variant D (2,16 kg) and the lowest in the variant K (1,59 kg). Average sugar content of 16,52% and 16,55% has been measured in variants K and A, somewhat lower in variants B and C (16,44% and 16,26%) and the lowest in variant D (15,84%). Slightly increasing in total acidity has been shown from variant K (5,99 g/l) to variant D (6,59 g/l). The above-presented results show a positive effect of fertilisation on the yield and quality of Plavac mali grapes during the investigation period. Regarding the time of fertiliser application, this experiment proved that the spring fertilisation of vineyards is the most suitable for karst field condition, because of high level of underground water during the wintertime.
Databáze: OpenAIRE
Externí odkaz: