Growth and Yield Response of Sunflower Helianthus annuus l to Spacing and Nitrogen Fertilization in Southern Guinea Savanna Ecological Zone of Nigeria ijtsrd
The experiments were conducted during 2016 and2017 rainy season to determine the optimal rate of nitrogen fertilizer and adequate plant spacing for production of sunflower in southern guinea savanna agroecology zone of Nigeria. The treatments consisted of planting spacing three 20cm, 30cm, 40 , four levels of nitrogen fertilizer 0, 80, 100 and 120 N […]