The influence of irrigation intervals on yield and morphological characteristics of carrot (Daucus carota L.)

Istraživanje je provedeno 2016. godine na OPG Komes u Čakovcu. Cilj istraživanja je bio promatrati masu korijena, duljinu korijena, promjer korijena i masu zelenog dijela mrkve u različitim tretmanima navodnjavanja (a1= kontrolni tretman (bez navodnjavanja), a2= navodnjavano svaki drugi put nego što su to vremenski uvjeti zahtijevali i a3= navodnjavano svaki put kada je to bilo potrebno). Navodnjavanje mrkve obavljeno je metodom kišenja. U prvom dijelu vegetacije navodnjavano je sa prskalicama, a kasnije samohodnim rasprskivačem „TYPHON“. Navodnjavanje je vrlo značajno (p<0,01) utjecalo na masu korijena mrkve (a1=37,03 g; a3=101,4 g), te je također zamijećeno značajno povećanje mase korijena na a3 tretmanu navodnjavanja u odnosu na a2 tretman ( a2=74,17 g). Pozitivno je utjecalo (p<0,01) i na duljinu korijena mrkve (a1=14,89 cm; a3=18,22 cm). Utjecaj turnusa navodnjavanja na promjer mrkve bio je vrlo pozitivan u rasponu od 2, 12 cm (a1) do 3,16 cm (a3), utvrđen je značajno veći (p<0,01) promjer korijena na oba turnusa navodnjavanja, dok je povećanje promjera korijena na a3 u odnosu na a2 tretman navodnjavanja bio na razini značajnosti p<0,05. Nadzemna lisna masa se uvelike povećala navodnjavanjem (p<0,01) te je bila u rasponu od 8,35 g (a1) do 24,59 g (a3), također je vidljiva veća lisna masa na a3 tretmanu u odnosu na a2 tretman (p<0,01).The research was conducted in 2016 at Komes Family Farm in Čakovec. The purpose of the research was to observe mass, length and diameter of the carrot root and mass of the carrot's green part in different irrigation treatments (a1= rainfed (without irrigation), a2= irrigated every other time as the weather conditions postulate and a3= irrigated every time needed). In carrot irrigation the method used was sprinkler irrigation. In the first phase of vegetation sprinklers were used for irrigation and later self-propelled sprayer „TYPHOON“. The irrigation has significantly (p<0,01) effected mass of the carrot's root (a1=37,03 g; a3=101,4 g)and it has also been noted significant growth of the root's mass in a3 treatment in relation to a2 treatment (a2=74,17 g). It has positively effected (p<0,01) the carrot's root length (a1=14,89 cm; a3=18,22 cm) as well. Influence of irrigation rota at carrot's diameter was very positive in range from 2,12 cm (a1) to 3,16 cm (a3), it's established notably larger (p<0,01) diameter of the root in both irrigation rotas, while the increase of the root's diameter at a3 treatment in relation to a2 treatment of irrigation was at the level of significance p<0,05. Overground leaf mass has remarkably increased with irrigation (p<0,01) and it has been in the range from 8,35 g (a1) to 24,59 g (a3). Also, leaf mass at a3 treatment was larger in relation to a2 treatment (p