MUGIJANTO, M. SINGGIH (2016) PENGARUH EKSTRAK AKAR ALANG-ALANG (Imperata cylindrica) DENGAN BERBAGAI KONSENTRASI TERHADAP PERTUMBUHAN VEGETATIF BEBERAPA VARIETAS TANAMAN PADI GOGO (Oryza sativa L.). S1 thesis, UNIVERSITAS SULTAN AGENG TIRTAYASA.

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Abstract

Weeds as plant pests, including important obstacles that must be overcome in increasing rice production in Indonesia. Weeds compete with plants generally cultivated in the fight over water, nutrients, light and space, so that the cultivation of plant growth is inhibited. Some weeds that have proven to be alelopati is Agropyron repens L, puzzles (Cyperus rotundus L. and Cyperus esculentus L., Cynodon dactylon L, and Imperata (Imperata cylindrica L.). The purpose of this study to determine the effect of reed extract root (Imperata cylindrica) with various concentrations of the vegetative growth of several varieties of upland rice plant (Oryza sativa L.). This research was conducted in January through April 2016, at the Laboratory of Biotechnology Faculty of Agriculture, University of Sultan Ageng Tirtayasa and Komplek Untirta Permai. This study uses a block randomized design with two factors. The first factor is the extract of the roots of the reeds with four levels (0 g/l, 100 g/l, 150 g/l and 200 g/l). The second factor is the upland rice crop varieties with 3 levels (Jalawara Hawara, Tambleg, and Bongkok). Parameter observations in terms of height, root length, plant dry weight, and the number of tillers. The results showed that treatment of concentration of 100 g/l occur inhibition against all parameters of observation. Treatment varieties tend to be better on the parameters plant height of 21 and 35 days after planting, root length, plant dry weight, and the number of tillers. In this study, there was an interaction between the extract of the roots of reeds and upland rice varieties on plant height and plant dry weight. While in the observation of root length and number of tillers there is no interaction. Keywords: Upland Rice, Weed, Reed Root Extrac

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