Effect of fertigation on growth, yield, and root quality of cassava

Dr. Uri Yermiyahu
Start: Dec 2015 –  End: Dec 2018

Cassava is one of the most important economic crops. Water deficit is the most critical limiting factors for cassava production in this area because of low rainfall and its erratic distribution. Cassava is a drought tolerant crop grown in these poor soils and areas receiving minimal rainfall leading to low yield. Irrigation and fertilizer use studies on this crop show increase in yield however, fertilizers in numerous studies have been applied through banding. The main objective of this study is to optimize fertilizer application and irrigation for growth, root tuber yield and quality of cassava and understand the mechanism of K in the process of root tuber development. This objective will be achieved by establishing two experiments in the greenhouse, the six treatments will be different combinations of K (K experiment) and three replications of which will have four levels of N, P, and K for growth model. In the result growth model showed that plant height was highest at K 100 ppm (100-4-100 and 100-10-100). Stem diameter was highest at K 40 ppm and K 100 ppm (100-10-40 and 100-10-100). Harvesting leaf, stem and root were highest at N 100 ppm, P 10 ppm and K 100 ppm. Harvest index was also leaf, stem and root at the same concentrations. However, Metabolic on leaf and root and photosynthesis in progress analyze and collect data. In present, It’s observed that K was a major limiting factor for growth.