ABSTRACT: The aim of this experiment was to determine the effect of the addition of ash and sandcompost proportion in the media on the growth of sorghum (Sorghum bicolor L.). The experiment was conducted on December 2015 to January 2016 in the Botanical Laboratory, Biology Department, Faculty of Mathematic and Natural Science, Lampung University, and was conducted in a complete randomized design by using two treatments. The first treatment was the addition of ash in two equivalents (with and without ash), the second treatment was the addition of sand-compost proportion in four equivalents (2 kg of sand, 1¾ kg of sand + ¼ kg of compost, 1½ kg of sand + ½ kg of compost, 1¼ kg of sand + ¾ kg of compost). The observed variables of the growth were the number of the roots, the crown’s length, the wet weight, and the dry weight. The number of the roots was determined by observing the number of the roots present at the base of the stalk of each plants. The length of the crown (cm) was determined by measuring it from the stalk’s base to the edge of the longest leaf. The wet weight (g) was determined by measuring the whole part of the plant using an analytical balance. The dry weight (g) was measured after the plants were stored in an oven for three hours in the temperature of 70o-80o C. The result showed that the best growth was obtained from the media with the sand equivalent of 1¼ kg of sand added with ¾ kg of compost without ash.
Penulis: Andrian isro rahmadi, Tundjung Tripeni Handayani, Martha L Lande
Kode Jurnal: jppertaniandd160250