Pengaruh Dosis Nitrogen terhadap Pembentukan Tunas dan Pertumbuhan Padi Ratun (Oryza sativa L.)

Widodo, Tirto Wahyu and Damanhuri, Damanhuri (2021) Pengaruh Dosis Nitrogen terhadap Pembentukan Tunas dan Pertumbuhan Padi Ratun (Oryza sativa L.). Jurnal Ilmiah Inovasi, 21 (1). pp. 50-53. ISSN 1411-5549

Text (Hasil Cek Similarity) Cek similarity_JII.pdf - Supplemental Material Available under License Creative Commons Attribution Share Alike. Download (1MB)

Abstract

Food security is the government's top priority in eradicating hunger. The government continues to make aninnovation,so that food needs in Indonesia are fulfilled. One of them is increasing the rice harvest index to 5 timesthrough the ratoon system. Currently, ratoon productivity is only 40-50% lower than its parent plant. Utilization oftechnology in the ratoon systemis expected to increase plant productivity. This study aims to increase theproductivity of the ratun by increasing the number of tillers whichincrease the growth of the ratoon. Theexperimentwasarranged incompletely randomized design (CRD). The factortested were nitrogen dose(50 kg ZA/ ha, 100 kg ZA / ha, 150 kg ZA / ha, 200 kg ZA / ha, and 250 kg ZA / ha) repeated 4 times. The parent rice plantwhich used in the ratoon systemwasInpari-32 variety. Collecting data were consisted number of tillers,length ofpanicles, number of grains per panicle, number of pithy grains, number of empty grains, and leaf chlorophyllcontent. Theresult showed thatnitrogen application 100, 150, 200, and 250 kg ZA.ha-1has a significant effect onnumber of tillers compared to 50 kg ZA.ha-1, but it was not significant for the other observed variables. The optimumnitrogen dose to achieve the maximum number of tillers was 216.75 ZA.ha-1. Increasing the level of nitrogen disposedto increase plant growth and yield component of ratoon rice, although it was not significant difference.Keywords—nitrogen, shoot formation, ratoon

Actions (login required)

View Item