Effect of split, application method and rate of nitrogen fertilizer on yield and growth of Guilan local bean (Phaseolus vulgaris L.)
Subject Areas :
Peyman sharifi
1
,
Zohreh Rad
2
,
Mehran Gholami
3
1 - Associate Professor, Department of Agronomy and Plant Breeding, Rasht Branch, Islamic Azad University, Rasht, Iran.
2 - Msc student, Department of Agronomy and Plant Breeding, Rasht Branch, Islamic Azad University, Rasht, Iran.
3 - Horticulture and Crops Research Department, Guilan Agriculture and Natural Resources Research and Education Center, AREEO, Rasht, Iran
Keywords: yield, Foliar application, Urea, Soil application, Beans,
Abstract :
An experiment was carried out to determine the effects of split nitrogen, application method and different nitrogen fertilizer rates on yield and growth of Guilan local bean based on randomized complete block design with three replications in 2014-2015 growing season at Guilan Agricultural and Natural Resources Research and EducationCenter. The experimental treatments included 1 (control), 2 (two split applications applied at 45 kg ha-1), 3 (two split applications applied at 45 kg ha-1 + foliar 1% N at podding stage), 4 (three split applications applied at 45 kg ha-1 + foliar 1% N at podding stage), 5 (two split applications applied at 90 kg ha-1), 6 (two split applications applied at 90 kg ha-1 + foliar 1% N at podding stage) and 7 (three split applications applied at 45 kg ha-1 + foliar 1% N at podding stage). Analysis of variance indicated significant effect of fertilizer treatment on plant height, pod yield, dry seed yield, biological yield, harvest index and hundred seed weight. The highest values of plant height (30.83 cm), pod yield (10.10 cm), biological yield (1283.3 kg ha-2) and hundred seed weight (26.16 g) was obtained in the fifth treatment. The highest values of dry seed yield (506 kg ha-1), pod yield (2903.9 kg ha-1) and harvest index (40.33%) was observed in the fourth treatment. It can be concluded that three split applications applied at 45 kg ha-1 had the potential to increase the dry seed yield compared to the other treatments. Foliar N (with appropriate soil N management) may be a promising strategy for addressing dietary N deficiencies.
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