Bu araştırma, farklı azotlu gübrelerin ve hümik asit dozlarının çeltikte (Oryza sativa
L.) verim ve verim ögeleri üzerine etkisini belirlemek amacıyla 2018 yılı bahar
üretim döneminde Ordu Üniversitesi Ziraat Fakültesi Tarla Bitkileri Bölümü’ne ait
ısıtmasız plastik örtülü araştırma serası ve laboratuvarlarında yürütülmüştür.
Çalışmada materyal olarak Osmancık-97 çeşidi kullanılarak, hümik asit (0, 2, 4, 6
l/da) dozları ve azotlu gübreler (Amonyum nitrat, Amonyum sülfat ve üre)
uygulanmıştır. Denemede tesadüf parsellerinde faktöriyel deneme desenine göre
kurulmuştur. Yapılan çalışmada bitki boyu 82.64-90.90 cm, kardeşlenme sayısı 1.42-
1.90 adet, gövde çapı 5.38-6.39 mm, salkım uzunluğu 11.22-11.88 cm, m2 deki
salkım sayısı 209.05-386.22 adet, salkımda tane sayısı 53.77-66.37 adet, hasat
indeksi %51.40-%59.19, dekara verimi 396.09-754.37 kg/da, salkım tane ağırlığı
1.62g-2.07g, başakçık sterilitesi %1.07-%4.47, bin tane ağırlığı 30.31-31.65 g, pirinç
tane uzunluğu 5.90-6.09 mm, pirinç tane genişliği 2.67-2.81 mm, kırıksız randıman
%61.43-%67.93 arasında bulunmuştur. Çalışmada uygulanmış olan azot formları ve
hümik asidin incelenen parametreler arasında bitki boyu, kardeşlenme sayısı ve saksı
veriminde önemli farklılıklara neden olduğu gözlenmiştir. En yüksek tane verimi
94.75 g/saksı ile amonyum nitrat azot formunda ve %4 hümik asit uygulamasından
elde edilmiştir.,This study was carried out in unheated plastic greenhouse and laboratories of Ordu
University, Faculty of Agriculture, Department of Field Crops in 2018 spring period
in order to determine the effect of different nitrogen fertilizers and humic acid doses
on yield and yield components of paddy (Oryza sativa L.). In the study, humic acid
(0, 2, 4, 6 l / da) doses and nitrogen fertilizers (ammonium nitrate, ammonium
sulphate and urea) were applied by using Osmancık-97 variety as material. The
experiment was established according to the factorial experiment design in random
plots. The values were varied between 82.64-90.90 cm in plant height, 1.42-1.90
pieces in the number of tillering, 5.38-6.39 mm in trunk diameter, 11.22-11.88 cm in
cluster length, number of cluster per m2 209.05-386.22, 53.77-66.37 pieces in cluster
number, 51.40 - 59.19% in harvest index, 396.09-754.37 kg/da grain yield per unit of
area, 1.62g-2.07g in cluster weight, 1.07- 4.47% in spikiness sterility, 30.31-31.65 g
in thousand grain weight, 5.90-6.09 mm in rice grain length, 2.67-2.81 mm in rice
grain width, 61.43 - 67.93% in yield without fracture. It was observed that nitrogen
forms and humic acid applied in the study caused significant differences in plant
height, number of tillering and pot yield. The highest grain yield was obtained with
ammonium nitrate nitrogen form and 4% humic acid application with 94.75 g / pot.
This study was carried out in unheated plastic greenhouse and laboratories of Ordu
University, Faculty of Agriculture, Department of Field Crops in 2018 spring period
in order to determine the effect of different nitrogen fertilizers and humic acid doses
on yield and yield components of paddy (Oryza sativa L.). In the study, humic acid
(0, 2, 4, 6 l / da) doses and nitrogen fertilizers (ammonium nitrate, ammonium
sulphate and urea) were applied by using Osmancık-97 variety as material. The
experiment was established according to the factorial experiment design in random
plots. The values were varied between 82.64-90.90 cm in plant height, 1.42-1.90
pieces in the number of tillering, 5.38-6.39 mm in trunk diameter, 11.22-11.88 cm in
cluster length, number of cluster per m2 209.05-386.22, 53.77-66.37 pieces in cluster
number, 51.40 - 59.19% in harvest index, 396.09-754.37 kg/da grain yield per unit of
area, 1.62g-2.07g in cluster weight, 1.07- 4.47% in spikiness sterility, 30.31-31.65 g
in thousand grain weight, 5.90-6.09 mm in rice grain length, 2.67-2.81 mm in rice
grain width, 61.43 - 67.93% in yield without fracture. It was observed that nitrogen
forms and humic acid applied in the study caused significant differences in plant
height, number of tillering and pot yield. The highest grain yield was obtained with
ammonium nitrate nitrogen form and 4% humic acid application with 94.75 g / pot.
