Article Per Year (5 Year)
p-Index From 2021 - 2026
0.23
P-Index
This Author published in this journals
All Journal Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (Journal of Natural Resources and Environmental Management) Biodiversitas Journal of Biological Diversity
Didi Darmadi
Program of Agronomy and Horticulture, Graduate School, Institut Pertanian Bogor. Jl. Meranti, Kampus IPB Dramaga, Bogor 16680, Indonesia
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Earth & Planetary Sciences Environmental Science

Published : 2 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 2 Documents
Search

 1 
Spectral Pattern of Paddy as Response to Drought Condition: An Experimental Study Arif Kurnia Wijayanto; Lilik Budi Prasetyo; Yudi Setiawan; Didi Darmadi; Ahmad Junaedi
Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (Journal of Natural Resources and Environmental Management) Vol. 11 No. 1 (2021): Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (JPSL)
Publisher : Graduate School Bogor Agricultural University (SPs IPB)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jpsl.11.1.83-92

Abstract

Every single physical object has a different response to the electromagnetic wave emitted to it. The response is in the form of how it absorbs and reflects the energy in every range of wavelength. The absorption and reflection curve is known as a spectral pattern. The spectral pattern of each object can be used to determine the object. In agriculture, the spectral pattern of plants can be used to determine the health condition of the plant. Drought is one factor that can affect the health of the plant. By identifying the spectral pattern of the plants, the effect of drought on paddy can be identified. This experimental study tried to identify the spectral pattern of some varieties of paddy and different growth stages. A spectrophotometer with a wavelength range of 350-1052 nm was used. Four varieties of paddy were planted in a greenhouse and being treated in drought conditions from the stage of vegetative, generative, and reproductive. Based on the result, the spectral response from the generative phase of all varieties gave the most different pattern compared to the control. This result compromising the rapid detection of paddy fields affected by drought using optical remote sensing data. Especially for plants in the stage of generative.
Evaluation of water-saving rice status based on morphophysiological characteristics and water use efficiency Didi Darmadi; AHMAD JUNAEDI; DIDY SOPANDIE; SUPIJATNO; ISKANDAR LUBIS; KOKI HOMMA; NURIL HIDAYATI
Biodiversitas Journal of Biological Diversity Vol. 20 No. 10 (2019)
Publisher : Society for Indonesian Biodiversity

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/biodiv/d201006

Abstract

Abstract. Darmadi D, Junaedi A, Sopandie D, Supijatno, Lubis I, Homma K, Hidayati N. 2019. Evaluation of water-saving rice status based on morphophysiological characteristics and water use efficiency. Biodiversitas 20: 2815-2823. One strategy to anticipate water shortages in rice production is to use varieties that are efficient in using water and produce high yields. The aim of this study was to measure water consumption, water use efficiency and production performance of several types of rice. The research was conducted during the rainy season from January to April 2018 and the dry season from August to November 2018 in a greenhouse. This study used a completely randomized design. The genetic materials used were 8 varieties consisting of lowland rice (sawah), upland rice (gogo), and land race. The variables analyzed included morphological and physiological characteristics. The results showed that differences in rice types indicated diverse responses to morphological and physiological characteristics on water consumption and water use efficiency (WUE). Mentik Wangi variety had the highest water consumption of 24.1 liters. The IPB 9 G and Jatiluhur varieties achieved the highest water use efficiency of 2.4 and 2.3, respectively. Based on the heatmap analysis, both varieties had similarities in the morphological characteristics of long roots, high root weights, long and broad leaves, and high total grain counts per panicle. The similarity of physiological characteristics was high rates of photosynthesis and low transpiration. Varieties that achieve the highest water use efficiency have the potential to be developed into varieties that are tolerant to limited water conditions.
Co-Authors AHMAD JUNAEDI Arif Kurnia Wijayanto DIDY SOPANDIE ISKANDAR LUBIS KOKI HOMMA LILIK BUDIPRASETYO NURIL HIDAYATI SUPIJATNO Yudi Setiawan