The Effect of Pisum Sativum as Cover Crop on NUE and N-uptake by a Subsequent Sunflower Crop in Central Greece

E. Skoufogianni, N.G. Danalatos, D. Bartzialis & P. Efthimiadis
Nitrogen is a key input for sustaining high yields in several crops, but the fertilizer N uptake efficiency in sunflower is relatively low (< 35%). A 2-year field experiment with sunflower was conducted in central Greece (Larissa area, Thessaly plain) in the years 2007 through 2009. The study soil is characterized by high clay content and vertic properties. The experiment was a factorial split plot design in three blocks. The first factor concerns the cultivation...