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All Journal Vegetalika Jurnal Ilmu Pertanian Jurnal Ilmu-Ilmu Pertanian Indonesia Journal of Degraded and Mining Lands Management jurnal Ilmu Pertanian (Agricultural Science)
Kurniasih, Budiastuti
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology

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Journal : jurnal Ilmu Pertanian (Agricultural Science)

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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

Abstract

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

Abstract

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.
Co-Authors Arif Wibowo Eka Tarwaca Susila Putra Eko Hanudin Endang Sulistyaningsih Handoko Handoko Indra Dewa, Didik Kartikawati, Rina Najibunniam, Arly Pangestuti, Retno Rudi Hari Murti Ruslan Boy Sevirasari, Nindy Suryanti Susila Putra, Eka Tarwaca Taryono, Taryono Tri Joko