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Effects of seed soaking with plant growth regulators combination on the aggregation ability of shallot from seeds Pangestuti, Retno; Sulistyaningsih, Endang; Kurniasih, Budiastuti; Murti, Rudi Hari
Jurnal Ilmu Pertanian Vol 8, No 3 (2023): December
Publisher : Faculty of Agriculture, Universitas Gadjah Mada jointly with PISPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ipas.90993

The true seed of shallot (TSS) is an alternative technology to boost high-quality seeds, farming cost efficiency, and shallot productivity in Indonesia. Despite the advantages of TSS, including extended shelf life and lower seed requirements, farmer and consumer acceptance remains limited due to the genetic and physiological constraints leading to single and large-sized bulbs, as an effect of low aggregation ability. This caused shallot bulbs from TSS to have a low price and were not suitable for use as seed bulbs. This research addresses challenges in shallot (Allium cepa L. Aggregatum group) production from TSS by investigating the impact of various plant growth regulators (PGRs) treatments and different soaking time on shallot growth and aggregation ability of 'Tuk Tuk' planting from TSS. The study in Yogyakarta employed a split-plot randomized block design from July to November 2018. The main plot varied the PGRs combination (9 treatment), while the subplot used the soaking time of 4 hours and 12 hours. The results indicated that a GA₃ concentration of 100 ppm, in synergy with NAA at 50 ppm for 12 hours, effectively enhanced aggregation compared to another treatment. Notably, the 'Tuk Tuk' shallot, characterized by low aggregation ability, demonstrated improved potential through seed treatment by PGRs, which could raise the number of bulbs from one to an average of two bulbs per plant. This study enhanced shallot aggregation ability, providing valuable insights for research and developing shallot production from true seeds in Indonesia.

Variability of soil chemical properties and rice productivity in salt-affected soil in the north coastal rice field of Central Java, Indonesia Kartikawati, Rina; Kurniasih, Budiastuti; Putra, Eka Tarwaca Susila; Hanudin, Eko
Journal of Degraded and Mining Lands Management Vol. 12 No. 1 (2024)
Publisher : Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15243/jdmlm.2024.121.6605

A coastal rice field is generally characterized by salt-affected soil and low soil quality for rice cultivation. Identifying soil chemical properties in these areas is necessary to determine soil management options for rice production. Therefore, soil samples were collected from 33 sampling points in the Wedung Sub-district of Demak Regency in the late dry season of 2021 to evaluate the variation among soil chemical characteristics in a coastline rice field. Soil samples were obtained beneath the topsoil (0-20 cm soil depth) and observed for electrical conductivity, exchangeable potassium, sodium, calcium, magnesium, and cation exchange capacity. Soils in the research field were categorized as slightly salty (0.75-2 dS m-1) to lightly salty (2.0-4.0 dS m-1) with very high sodium (>2 cmol(+) kg-1). Exchangeable potassium was dominated by moderate (0.3-0.7 cmol(+) kg-1) and low categories (0.2-0.3 cmol(+) kg-1). Based on soil calcium-to-magnesium ratios, around 6% of all samples were classified as calcium-deficient. The range of soil cation exchange capacity was 22-30 cmol(+) kg-1 and classified as high soil cation exchange capacity. Rice productivity in the salt-affected soil was around 4 t ha-1. Strategies for soil and controlling plants, such as soil amelioration and salt-tolerant rice cultivars, should be pursued to support plant growth and enhance rice productivity in the salt-affected soil, particularly in the coastal area.

A TANGGAPAN FISIOLOGIS DAN HASIL EMPAT KULTIVAR PADI GOGO LOKAL SULAWESI TENGAH TERHADAP CEKAMAN KEKERINGAN Boy, Ruslan; Indra Dewa, Didik; Susila Putra, Eka Tarwaca; Kurniasih, Budiastuti
Jurnal Ilmu-Ilmu Pertanian Indonesia Vol 24 No 2 (2022)
Publisher : BPFP Universitas Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31186/jipi.24.2.132-144

[PHYSIOLOGICAL RESPONSES AND YIELDS OF FOUR LOCAL GOGO RICE CULTIVARS OF CENTRAL SULAWESI TO DROUGHT STRESS]. Rice is the most important staple food for Indonesians and can be grown in dry land agroecosystems as an upland rice. The research was conducted to study the physiological mechanisms related to drought resistant schemes on four local upland rice cultivars of Central Sulawesi. Field research was carried out using factorial Completely Randomized Block Design (CRBD) with two factors and three blocks as replication. The first factor was four cultivars of upland rice, i.e., Habo, Hiwanggu, Sunggul, and Lambara; while watering intervals of once in one, two, four and eight days was considered as second factor. The observed variables of this experiment were soil moisture, relative water content of leaf, stomatal conductance, concentration of leaf carbon dioxide, transpiration rate, photosynthesis rate, and yield of grain per grove. The collected data were analyzed with regression using independent variables of soil moisture and dependent variables of relative water content on leaf, stomatal conductance, concentration of carbon dioxide on leaf, transpiration rate, photosynthesis rate and yield of grain per grove. The relationship among observed variables was determined using correlation analysis. The results showed that drought resistant upland rice cultivars (Habo and Sunggul) required less optimum soil moisture than those of non-drought resistant cultivars (Hiwanggu and Lambara) to maximize relative water content, stomatal conductance, carbon dioxide, transpiration rate and photosynthesis rate. Soil moisture contributions to maximum yield of grain per grove on Habo, Sunggul, Hiwanggu and Lambara cultivars were 23.41%, 23.00%, 27.14% and 26.67%, respectively.

Evaluasi Kompetisi Model Tumpang Gilir Cabai Rawit dengan Jagung dan Aplikasi Konsorsium Agens Hayati Sevirasari, Nindy; Sulistyaningsih, Endang; Kurniasih, Budiastuti; Suryanti, Suryanti; Wibowo, Arif; Joko, Tri
Vegetalika Vol 14, No 1 (2025): In Publish
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/veg.101401

Praktik budidaya yang intensif pada tumpang gilir antara cabai rawit–jagung perlu dilakukan evaluasi untuk mengetahui keunggulan lahan dan kompetisi di antara dua spesies yang berbeda. Tujuan penelitian ini untuk mengetahui nilai kompetisi dan keunggulan lahan dari model tanam tumpang gilir cabai rawit–jagung dan aplikasi agens hayati. Penelitian dilakukan di Magelang, Jawa Tengah, Indonesia pada Mei 2019–Januari 2020. Penelitian menggunakan metode penelitian kuantitatif yang disusun dalam Rancangan Acak Kelompok Lengkap dua faktor; faktor pertama yaitu model tanam tumpang gilir (2 baris dan 3 baris cabai rawit) dan faktor kedua yaitu aplikasi agens hayati (dengan dan tanpa aplikasi agens hayati). Monokultur cabai dan jagung tanpa aplikasi agensi hayati merupakan kontrol. Data dianalisis menggunakan Analisis Varians dan Uji Lanjut Duncan's multiple range tests pada α = 5%. Tumpang gilir dinilai berdasarkan Nisbah Kesetaraan Lahan, Nisbah Kesetaraan Lahan berdasarkan Waktu, Agresivitas, Rasio Kompetisi, dan Kehilangan Hasil Aktual. Hasil penelitian menunjukkan bahwa Model tanam 2 dan 3 baris cabai rawit pada pola tanam tumpang gilir cabai rawit dengan jagung dan pemberian agens hayati menghasilkan nilai Nisbah Kesetaraan Lahan dan Nisbah Kesetaraan Lahan Berdasarkan Waktu > 1. Cabai rawit memilki indeks Agresivitas dan Rasio Kompetisi yang lebih besar daripada jagung, namun memiliki nilai Kehilangan Hasil Aktual yang tinggi jika ditanam pada pola tumpang gilir tidak disertai pemberian agens hayati. Dari metode yang diterapkan pada penelitian ini, maka tumpang gilir cabai rawit dengan jagung model 2 baris dengan pemberian agens hayati direkomendasikan karena layak diterapkan dan menguntungkan untuk diusahakan terutama bagi pertanian skala kecil.

Yield gap analysis between irrigated and rainfed rice agroecosystem Handoko, Handoko; Kurniasih, Budiastuti; Taryono, Taryono
Jurnal Ilmu Pertanian Vol 10, No 1 (2025): April
Publisher : Faculty of Agriculture, Universitas Gadjah Mada jointly with PISPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ipas.97040

Rice is an essential crop for worldwide food security, providing the primary feeding for nearly half of the people on earth. In order to meet the increasing demand for rice, it is necessary to reduce the yield gap between irrigated and rainfed rice agroecosystem; therefore, a descriptive approach is used to estimate the yield gap (Yg) between irrigated (Yp) and rainfed rice agroecosystems (Yw) and identify its key factors. This research aimed to identify the causes of the yield gap between irrigated and rainfed rice agroecosystems and evaluate the causes of the yield gap so as to minimize the yield gap. This research had been conducted from December 2021 to April 2022 in two different locations, an irrigated and a rainfed rice agroecosystem (planted between M. cajuputi stands). Fourteen genotypes were grown in a complete randomized block design consisting of three blocks in each location (irrigated and rainfed rice fields). The experimental unit at each research location was 20 m² (4 m × 5 m), and the harvest area was 12 m² (3 m × 4 m), consisting of 192 populations of rice plants. The results showed that soil fertility limiting factors, including total nitrogen, phosphorus and available potassium caused the yield gap. The maximum yield recorded was in G2 (8.83 ton.ha⁻¹) in the irrigated agroecosystem, while the minimum yield was in G8 (0.64 ton.ha⁻¹) in the rainfed agroecosystem. Yield gap analysis revealed a gap of 5.27 ton.ha⁻¹ between the irrigated and rainfed systems. The most significant yield gap was observed in G3 at (6.92 ton.ha⁻¹), whereas the least was in G10 (3.17 ton.ha⁻¹). The genotype G2, exhibiting the highest yield in the irrigated agroecosystem, is recommended for planting, while G4, with a potential yield of 4.14 ton.ha⁻¹, is suggested for rainfed agroecosystems.

Yield gap analysis between irrigated and rainfed rice agroecosystem Handoko, Handoko; Kurniasih, Budiastuti; Taryono, Taryono
Jurnal Ilmu Pertanian Vol 10, No 1 (2025): April
Publisher : Faculty of Agriculture, Universitas Gadjah Mada jointly with PISPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ipas.97040

Rice is an essential crop for worldwide food security, providing the primary feeding for nearly half of the people on earth. In order to meet the increasing demand for rice, it is necessary to reduce the yield gap between irrigated and rainfed rice agroecosystem; therefore, a descriptive approach is used to estimate the yield gap (Yg) between irrigated (Yp) and rainfed rice agroecosystems (Yw) and identify its key factors. This research aimed to identify the causes of the yield gap between irrigated and rainfed rice agroecosystems and evaluate the causes of the yield gap so as to minimize the yield gap. This research had been conducted from December 2021 to April 2022 in two different locations, an irrigated and a rainfed rice agroecosystem (planted between M. cajuputi stands). Fourteen genotypes were grown in a complete randomized block design consisting of three blocks in each location (irrigated and rainfed rice fields). The experimental unit at each research location was 20 m² (4 m × 5 m), and the harvest area was 12 m² (3 m × 4 m), consisting of 192 populations of rice plants. The results showed that soil fertility limiting factors, including total nitrogen, phosphorus and available potassium caused the yield gap. The maximum yield recorded was in G2 (8.83 ton.ha⁻¹) in the irrigated agroecosystem, while the minimum yield was in G8 (0.64 ton.ha⁻¹) in the rainfed agroecosystem. Yield gap analysis revealed a gap of 5.27 ton.ha⁻¹ between the irrigated and rainfed systems. The most significant yield gap was observed in G3 at (6.92 ton.ha⁻¹), whereas the least was in G10 (3.17 ton.ha⁻¹). The genotype G2, exhibiting the highest yield in the irrigated agroecosystem, is recommended for planting, while G4, with a potential yield of 4.14 ton.ha⁻¹, is suggested for rainfed agroecosystems.

Agroclimatic characteristics, nutrient uptake, morphology, and yield of abaca plants (Musa textilis nee) which managed agroforestry in Ngawi Najibunniam, Arly; Susila Putra, Eka Tarwaca; Kurniasih, Budiastuti
Jurnal Ilmu Pertanian Vol 10, No 2 (2025): August
Publisher : Faculty of Agriculture, Universitas Gadjah Mada jointly with PISPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ipas.104864

This research aimed to measure microclimate characteristics, evaluate abaca plants nutrient uptake, morphology and yield, and determine the optimal microclimate characteristics on abaca cultivation land managed using teak-based agroforestry in the middle and advanced phases in Ngawi. The research was arranged in a nested design. The parameters observed include agroclimatic characteristics, nutrient uptake, physiology and morphology, as well as yield of abaca plants. The middle phase of abaca-teak agroforestry shows higher humidity and lower temperatures than the advanced phase with a difference of 3% and 1.57ºC, respectively. This is because microclimate in the middle phase is more suitable due to the multistrata canopy structure and greater plant diversity. The absorption all of macro and micro nutrients in the middle phase was better than in the advanced phase, indicating that abaca in the middle phase had more nutrient uptake. The morphological traits of abaca in the middle phase were better and significantly different compared to those in the advanced phase, with the differences in plant height variables of 110.11 cm, apparent stem circumference of 7.99 cm, and number of suckers of 5. Furthermore, in terms of yield characteristics, all variables showed that abaca planted in the middle phase was better than the advanced phase, it can be seen the respective differences in the number of banana fronds is 4 blade, the weight of banana fronds is 2.95 kg/plant, the fresh weight of fiber is 353.66 g/plant, and the weight of dry fiber is 120.67 g/plant.

Agroclimatic characteristics, nutrient uptake, morphology, and yield of abaca plants (Musa textilis nee) which managed agroforestry in Ngawi Najibunniam, Arly; Susila Putra, Eka Tarwaca; Kurniasih, Budiastuti
Jurnal Ilmu Pertanian Vol 10, No 2 (2025): August
Publisher : Faculty of Agriculture, Universitas Gadjah Mada jointly with PISPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ipas.104864

This research aimed to measure microclimate characteristics, evaluate abaca plants nutrient uptake, morphology and yield, and determine the optimal microclimate characteristics on abaca cultivation land managed using teak-based agroforestry in the middle and advanced phases in Ngawi. The research was arranged in a nested design. The parameters observed include agroclimatic characteristics, nutrient uptake, physiology and morphology, as well as yield of abaca plants. The middle phase of abaca-teak agroforestry shows higher humidity and lower temperatures than the advanced phase with a difference of 3% and 1.57ºC, respectively. This is because microclimate in the middle phase is more suitable due to the multistrata canopy structure and greater plant diversity. The absorption all of macro and micro nutrients in the middle phase was better than in the advanced phase, indicating that abaca in the middle phase had more nutrient uptake. The morphological traits of abaca in the middle phase were better and significantly different compared to those in the advanced phase, with the differences in plant height variables of 110.11 cm, apparent stem circumference of 7.99 cm, and number of suckers of 5. Furthermore, in terms of yield characteristics, all variables showed that abaca planted in the middle phase was better than the advanced phase, it can be seen the respective differences in the number of banana fronds is 4 blade, the weight of banana fronds is 2.95 kg/plant, the fresh weight of fiber is 353.66 g/plant, and the weight of dry fiber is 120.67 g/plant.

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