PERFORMANCE OF UPLAND KANGKONG (Ipomea reptans Poir) TO THE DIFFERENT SOURCES OF FERTILIZER

The goal of fertilization is to provide an adequate supply of all essential nutrients for a crop throughout the growing season. Fertilizers need to be applied to all types of crop production systems in order to achieve yield levels which make the effort of cropping worthwhile. This experiment was conducted from November 2018 to April 2019 in the rice paddy area of College of Agriculture, Mindanao State University- General Santos City to determine the response of Upland Kangkong to the different sources of fertilizer and to know the best source of fertilizer for optimum yield of Upland Kangkong. A Randomized Complete Block Design (RCBD) with four (4) treatments replicated three (3) times was used in this study. The treatments were the different sources of fertilizer as follows: T1 - Control (No application); T2- Inorganic Fertilizer (60-20-20 kg/ha); T3- Goat Manure; T4- Guano. The result of the study revealed that the use of various sources of fertilizer showed that there is a highly significant effect on the length of shoot after regrowth, the highest length of 27.16 cm applied with T3- Goat Manure compared to T1- Control with 22.21 cm. Also, the used of various sources of fertilizers like; goat manure, guano ang inorganic fertilizer were comparatively significant in promoting yield of Upland kangkong having yield of 39.07 tons/ha, 37.24 tons/ha, and 32.13 tons/ha respectively. Therefore, it is suggested that goat manure can be used as a source of fertilizer for Upland Kangkong as this source seemed to be cheaper and more available in farms compared to Guano and Inorganic source of fertilizer.