Growth and Productivity of Four Cassava Cultivars on Several Levels of Mixed Fertilizers

[摘要] Cassava is responsive to fertilization, and it is one of the important factors for high productivity. Root formation needs sufficient Phosphorus (P) and Potassium (K) nutrients, and adequate nutrients uptake increases root weight and starch content. However, the optimum effect of P and K fertilization should be balanced with Nitrogen (N) fertilization. The objective of the study was to determine the effect of mixed (inorganic and organic) fertilizers doses on the growth and yield of several cassava cultivars grown in Pati district, Central Java, Indonesia. The experiment was carried out during planting season in 2018. Four cassava cultivars (Litbang UK 2, UK 1 Agritan, Malang 4, and UJ 5) were tested under five doses of mixed fertilization. The split-plot design with three replicates was used in this experiment, where fertilizations as the main plot and cultivars as the subplot. The results showed that mixed fertilization had no significant effect, while the cultivars had a significant effect on growth and yield parameters as well as starch content. No significant interaction effect of the two factors, except in plant height.

[学科分类] 生物科学（综合）

[关键词] Environmentally-friendly fertilization;Improving cassava production;Optimal fertilizer;Prevent nutrient loss;Rational and