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All Journal Vegetalika Jurnal Ilmu Pertanian Jurnal Ilmu-Ilmu Pertanian Indonesia jurnal Ilmu Pertanian (Agricultural Science)
Susila Putra, Eka Tarwaca
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Agriculture, Biological Sciences & Forestry

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Journal : jurnal Ilmu Pertanian (Agricultural Science)

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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.
Anatomical responses of roots and yield of cocoa (Theobroma cacao L.) to K fertilization doses Shodiq, Muhammad Syaiful; Susila Putra, Eka Tarwaca; Rofiqo Irwan, Siti Nurul
Jurnal Ilmu Pertanian Vol 9, No 2 (2024): 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.76188

Abstract

Cocoa is one of important commodities for the economy of Indonesia. However, national exports of the commodity has declined due to decreasing of domestic cocoa production. For enhancing cocoa production, potassium fertilization is required. Potassium (K) is an essential macronutrient in the physiology, anatomy, and yields processes. Anatomically, K is needed in the elongation of meristem tissue as well as for increasing the yields of fruit and seed. The objectives of this research included the study of the effect of K fertilizer dose and determination of optimum K doses on root anatomy development as well as the yield of cocoa pods. This research was conducted on the cocoa plantation of PT. Pagilaran. Applied doses of K fertilization consisted of 0, 150, 300, 450, and 600 g KCl/plant in Randomized Complete Block Design (RCBD) with 5 replications. Observed variables consisted of root anatomy and yield of cocoa pods. The results indicated that the dose of K fertilization significantly influenced both stele and xylem diameters of cocoa roots but insignificantly effected the thickness of cork tissue, phloem diameter, and the thickness of cambium tissue. Moreover, the dose also showed significant effect on the number of beans per pod, the weight of 100 beans, as well as the fresh and dry weight of beans per plant. It was also revealed that the dose showed no significant effect on length, diameter, and weight of the cocoa pods. It implied that K fertilization dose had effect on root anatomical properties and yield of cacao. 
Co-Authors Erlina Ambarwati Ikhwana, Muhammad Habib Indra Dewa, Didik Kurniasih, Budiastuti Muhammad Syaiful Shodiq Najibunniam, Arly Ruslan Boy Siti Nurul Rofiqo Irwan