نوع مقاله : علمی- تحقیقاتی
نویسندگان
1 عضو هیئت علمی موسسه تحقیقات اصلاح و تهیه بذر چغندرقند، کرج، ایران.
2 کارشناس موسسه تحقیقات اصلاح و تهیه بذر چغندرقند، کرج، ایران.
چکیده
کلیدواژهها
عنوان مقاله [English]
نویسندگان [English]
This experiment was carried out to investigate the effect of water stress on sugar beet yield, at Motahary research station. A split plot experiment was undertaken with in a randomized complete block design with four replications for three years. Main plots were different times of water stress as implemented after the 3rd, 4th, 5th and sixth irrigation. Subplots were included as 2/5, 3/5, 4/5 and 5/5 of available soil water. The results showed some parameters like root yield, sugar yield and white sugar yield were significant in the first year. Combined analysis of three years, experiments showed that root and sugar yield had significant differences. In addition, Duncan-test used for mean analysis of three years showed that sugar content and white sugar content were affected by the interaction and using total available water) was the best treatment. Whereas A1B2 treatment (water stress after third irrigation and using 3/5 available water) showed the lowest yield in comparision the other treatments. Moreover, important parameters such as root yield, sugar yield and white sugar yield are affected by the interaction of treatments. These were most favorably affected by A3B2 treatment (water stress after the fifth irrigation and using 4/5 available water). The A4B4 treatment (water stress after sixth irrigation and using complete available water) the lowest yield showed. These results indicated that water stress after fifth irrigation (about 45 days after sowing) and using 60% available water of soil is optimum for saving water and increasing yield production.
کلیدواژهها [English]
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