THE EFFECT OF Mg(CO3)2 COMPOUND FERTILIZER AND N,P,K FERTILIZER ON THE Mg-EC, PLANT Mg-UPTAKE, AND YIELD OF TOMATO (Solanum lycopersicum L.) ON INCEPTISOLS OF JATINANGOR
Abstract
Inceptisols is a soil order that has an area of about 70.5 million hectares in Indonesia. The commodity that can be cultivated on Inceptisols is tomatoes. The nutrient content of Inceptisols is classified as low, resulting in decreasing in tomato yield. One of the efforts that can be made to increase the yield of tomatoes is by applying Mg(NO3)2 compound fertilizer. The experiment was conducted to determine the effect of Mg(NO3)2 compound fertilizer on soil exchangeable Mg (Mg-EC), plant Mg-Uptake, and yield of tomato. The experiment was conducted at the Experimental Field of the Laboratory of Soil Chemistry and Plant Nutrition, Faculty of Agriculture, Universitas Padjadjaran, Jatinanor, from October to December 2023. The experimental design used was a Completely Randomized Block Design (RCBD) with six treatments: one treatment without fertilizer, one treatment of the recommended dose of N, P, K fertilizer, four treatments of various doses of Mg(NO3)2 compound fertilizer combined with N, P, K fertilizer with four replications each. The results of the experiment showed that Mg(NO3)2 compound fertilizer had the effect of increasing soil exchangeable Mg (Mg-EC), plant Mg-Uptake, and yield of tomato. The treatment of 1 dose of Mg(NO3)2 compound fertilizer and dose of N, P, K fertilizer showed the best results on soil Mg-EC(3,82 plant Mg-Uptake content (1.23%), number of fruits (268 fruits), fruit diameter (38.15 cm, weight per fruit (36.75 g), and fruit weight per plot (6.13 kg) on Inceptisols Jatinangor.
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