The effect of nitrogen source and population density on corn production: B- yield and its components [electronic resource].

Includes reference.

This investigation was carried out during 1999 and 2000 seasons, at the Agricultural Experiment and Research Station, Faculty of Agriculture, Cairo University at Giza, Egypt to study, the effect of N fertilization treatments (mineral as urea (46,5% N) with farmyard manure (FYM) as cattle manure) and plant population density (20000, 25000 and 30000 plant/fed.) on yield and its components of maize Single cross 10. The results showed that, the most studied yield components increased by raising the quantity of N from urea. However, the differences between 120 kg N/fed. as urea alone and 90 kg N/fed. as urea + 30 kg N/fed. as cattle manure were insignificant in most cases, However, increasing plant population density from 20000 to 30000 plant/fed. significantly increased grain yield. Meanwhile, the interaction between N fertilization combinations and plant population density had a significant effect on all studied characters. Optimum grain yield/fed. as well as harvest index was obtained by planting 30000 plant/fed, with 120 kg N/fed. as urea, followed by 60-90 kg N as urea combined with 30-60 kg N as organic source (cattle manure).

Summary in Arabic.

1