Effect of foliar application of methanol and nitrogen on yield and yield components of soybean in Guilan weather conditions

Subject Areas : Journal of Plant Ecophysiology

amir janbazi roudsari ¹ , majid ashouri ² , ebrahim amiri ³

1 - گروه زراعت و اصلاح نباتات، واحد لاهیجان، دانشگاه آزاد اسلامی، لاهیجان، ایران
2 - گروه زراعت و اصلاح نباتات، واحد لاهیجان، دانشگاه آزاد اسلامی، لاهیجان، ایران
3 - گروه زراعت و اصلاح نباتات، واحد لاهیجان، دانشگاه آزاد اسلامی، لاهیجان، ایران

Received: 2015-05-15 Accepted : 2015-05-15 Published : 2015-05-01

Keywords: soybean, foliar application, Grain yield, Biological yield, Methanol,

Abstract :

 In order to investigate the effects of methanol foliar application and nitrogen on yield and yield components of soybean, a field study was conducted at Rodsar region (Guilan province) in growing season of 2012. The experiment was factorial based on Randomized Complete Block Design with three replications. Treatments consisted of four levels of nitrogen fertilizer including: N1-control, N2- 30, N3-60 and N4- 90 kg/ha from urea source and methanol treatments in 4 levels including: M1- control, M2- 20, M3- 30 and M4- 40 methanol volume percentage. Results showed that, methanol treatments had significant effects on number of pod per plant, 100 seed weight, grain yield, biomass yield, harvest index, plant height and pod length. Forty volume percentage methanol treatment had the highest number of pod per plant, 100 seed weight, plant height and pod length.Maximum biomass  obtained in 40, 30 volume percentage methanol treatments. Nitrogen levels had significant effects on number of pod per plant, number of seed per pod, 100 seed weight, grain yield, biomas yield, plant height and pod length . Maximum number of pod per plant, number of seed per pod  and biomass yield obtained in the 90 kg/ha level of nitrogen fertilizer. Maximum plant height and pod length obtained from 90 and 60 kg/ha treatments. Nitrogen control treatment showed the highest 100 seed weight. Grain yield and harvest index in different levels of nitrogen and methanol were significant. Generally 60 kg/ha of nitrogen and 30% methanol treatments were the best treatment for management of soybean.