Research Information System
Iğdır Üniversitesi Fen Bilimleri Enstitüsü Dergisi, vol.9, no.1, pp.90-100, 2022 (TRDizin)
In our study, we evaluated soybean leaf chlorophyll, yield and yield attributes change under different water amounts and sulphur fertilizer conditions. For this purpose; a pot experiment conducted in semi-controlled greenhouse conditions by using three soybean varieties (Cinsoy, Arısoy and Umut-2002), four soil moisture treatments calculated based on gravimetric method imposed from 30 days after sowing: well-watered (75% and 100% field capacity) and deficit irrigation (50% and 25% field capacity) and two different sulphur doze ( 0 and 5 kg/da). Plant height, the lowest pod height, filled pods plant-1, thousand-grain weight, grain yield plant-1 and SPAD chlorophyll measurements in pod development (BBCH 75) and grain filling (BBCH 85) periods were evaluated. As a result of the study, analysis of variance showed that all parameters were significantly affected by irrigation regimes (p<0.01). While the highest average seed yield (18.6 g/plant) was observed at 100% field capacity and 5 kg/da sulphur dose with Cinsoy variety in 2018, the lowest yield (3.1 g/plant) was found at 25% field capacity and 5 kg/da sulphur dose with Umut-2002 variety in 2017 growing period. SPAD chlorophyll content directly increased with water amount of soil and changed by variety both pod development and grain filling periods.