THE USE OF OIL PALM EMPTY FRUIT BUNCHES COMPOST, RICE HUSK CHARCOAL AND CHICKEN MANURE TO REDUCE NPK FERTILIZER DOSES ON THE GROWTH AND YIELD OF CAULIFLOWER (BRASSICA OLERACEAE VAR. BOTRYTIS L.)

Abstract

The objective of this study was to determine the effects of oil palm empty fruit bunches compost, rice husk charcoal and chicken manure to growth and productivity of cauliflower. This experiment was conducted from July 2019 until October 2019 at Bukit Besar, Palembang, South Sumatra. The design used was Randomized Completely Block Design (RCBD) with 10 treatments and 3 blocks. Each treatment consisted of 3 crops. The treatments were 50% of NPK fertilizer (P1), oil palm empty fruit bunches compost 20 ton ha-1 +50% of NPK(P2),oil palm empty fruit bunches Compost 25 ton ha- +50% of NPK (P3),oil palm empty fruit bunchescompost 30 ton ha- +50% of NPK(P4), rice husk charcoal 20 ton ha-1 +50% of NPK (P5), rice husk charcoal 25 ton ha-1 +50% of NPK(P6), rice husk charcoal 30 ton ha-1 + 50% of NPK (P7), and chicken manure20 ton ha-1 +50% of NPK (P8), chicken manure25 ton ha-1 +50% of NPK(P9), chicken manure30 ton ha-1 + 50% of NPK (P10).The result showed thatthe treatment of chicken manure30 ton ha-1 + 50% of NPK (P10) gave the best result on the growth and yield of cauliflower. It was showed by the height of plant, the number of leaves, the age of flowering, the age of harvest, total fresh weight of plantand commercial fresh weight, diameter of stem and diameter of flowers. All of the value of these parameters was highest.

Keywords

• cauliflower
• rice husk charcoal
• chicken manure
• oil palm empty fruit bunches