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PLANTA TROPIKA : Jurnal Agrosains (Journal of Agro Science)
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Open Access journal
ISSN (Print) 0216-499X - ISSN (Online) 2528-7079
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Response of Corn-Soybean Intercropping to Fertilizer Packages in Dry Land
with Dry Climate
- Authors: Afandi Kristiono, Siti Muzaiyanah
  Pages: 100 - 108
  Abstract: Intercropping soybean with corn on dry land with dry climate (DLDC) is an alternative program to expand the soybean cultivation harvested area. This study evaluated the effectiveness of fertilization performance in the intercropping of soybean-corn in DLDC. The experiment in this study was arranged in a randomized block design, consisting of seven fertilizer package treatments with four replications. The spacing between corn (Pertiwi 3) and soybean (Dena 1) was (50 cm x 200 cm) x 40 cm (2 plants/clump) and between soybeans (Dena 1) was 40 cm x 15 cm (2-3 plants/clumps). The observations consisted of soil analysis (pH, organic matter, total N (Kjeldahl), available P, Ca-dd, Mg-dd, K-dd, and Na-dd), soybean leaf chlorophyll index (45 and 60 days after planting/dap), plant height at (45 daps and harvest), number and weight of root nodules (45 daps); Corn: chlorophyll index (56 daps), plant height (harvest), analysis of corn and soybean plant tissue (60 daps), yield, and yield components of dry seeds of soybean and corn per hectare. The results showed that effective fertilization for the intercropped crops was 53 kg N + 1,500 kg of manure per hectare in corn plant and 7 kg N + 22 kg P2O5 + 18 kg K2O + 1,500 kg/ha manure + Rhizobium Iletrisoy/Agrisoy in soybean crops.
  PubDate: 2021-09-04
  DOI: 10.18196/pt.v9i2.4378
  Issue No: Vol. 9, No. 2 (2021)
Response of Growth and Yield of Soybean (Glycine max l. Merril) to the
Method and Dose of Leachate Liquid Organic Fertilizer Application
- Authors: Hasnelly Hasnelly, Syafrimen Yasin, Agustian Agustian, Darmawan Darmawan
  Pages: 109 - 115
  Abstract: The high demand for soybeans cannot yet be met by domestic production. Thus, a way to increase soybean production is necessary, one of which is to use liquid organic fertilizer derived from landfill leachate. This study aimed to examine the application method of liquid organic fertilizer (LOF) from landfill leachate to the soil and leaves and to determine the concentration giving the best growth and yield of soybean plants. The study was a field-research arranged in a completely randomized design (CRD) consisting of six treatments and four replications, which was carried out in a greenhouse. The treatments include A (0 LOF/L water), B (20 ml LOF/L water), C (30 ml LOF/L water, D (40 ml LOF/L water), E (50 ml LOF/L water) and F (60 ml LOF/L water). The liquid organic fertilizer was applied through the soil and leaves at a dose according to the treatments. The results showed that the application of liquid organic fertilizer from landfill leachate was better applied to the soil than to the leaves. The liquid organic fertilizer given had a significant effect on the leaf area (cm2), crop weight (g), and plant seed weight (g), but not on the plant height (cm) and stem diameter (cm). Liquid organic fertilizer application is better given to the soil than to the leaves based on the independent T test. The liquid organic fertilizer from landfill leachate at a concentration of 40 ml/L of water had the best effect on the growth and yield of soybean plants.
  PubDate: 2021-09-04
  DOI: 10.18196/pt.v9i2.9000
  Issue No: Vol. 9, No. 2 (2021)
The Occupancy of Barn Owl in the Artificial Nest Box to Control Rice Field
Rat in Yogyakarta Indonesia
- Authors: Sudarmaji Sudarmaji, Arlyna Budi Pustika, Kiki Yolanda, Evy Pujiastuti, Tri Martini, Alexander Stuart
  Pages: 116 - 125
  Abstract: One component of integrated rat management in rice fields is barn owl as biological control. The study was conducted to evaluate the occupancy rate of barn owl nest boxes, the local rat population, and rat damage to rice crops. It was conducted in three locations in Yogyakarta by observing 10 nest boxes per site. Assessment of their occupancy was monitored by barn owl presence in nest box (egg, chick, and adult) and natural nests in villages nearby. In comparison with control village, the local rat population was observed by the active burrow count method and linear trap barrier systems. Rat damage intensity is estimated by sampling 150 tillers using a stratified sampling approach. The result indicated that 1-4 nest boxes were occupied per location. The owls also nested within buildings nearby. Active burrows ranged from 4 to 25 burrows per 150 m. The rat damage area ranged from 33.33% - 48.57% with 6.33% - 14.86% damage intensity was significantly lower than the control site. Artificial nest box installation for owls in rice fields were only occupied for breeding. The use of barn owls for biological control of rice field rats should be combined with other methods in an integrated approach.
  PubDate: 2021-09-04
  DOI: 10.18196/pt.v9i2.10893
  Issue No: Vol. 9, No. 2 (2021)
Exploration of Arbuscular Mycorrhizal Fungi from Sugarcane Rhizosphere in
Marginal Land
- Authors: Zahraeni Kumalawati, Sri Muliani, Asmawati Asmawati, Kafrawi Kafrawi, Yunus Musa
  Pages: 126 - 135
  Abstract: The exploration of arbuscular mycorrhiza fungi from sugarcane plantation in marginal land in South Sulawesi was carried out to find the source of inoculums showing effective infection. Soil samples were taken from four area with different characteristic of marginal land, namely land with low organic matter content, clay texture, limited irrigation, and undulating land. Mycorrhizae contained in the soil samples were then observed, and the spores obtained were used as the source of isolation by a single spore culture. The mycorrhizal spores were isolated by wet sieving and centrifugation method with 48% sucrose, which were observed under a compound microscope for spore details (100-1000x). Sugarcane root samples were taken to observe mycorrhizal infection in sugarcane root tissue by root staining method. The results of the study showed that the greatest diversity of mycorrhizal genera was found in soil samples of Jambua Block (Glomus, Gigaspora, and Sclerocistis) and AJ-5 Block area (Glomus, Acaulospora, and Sclerocistis). Single-spore isolates obtained were Glomus sp. and Acaulospora sp. Infection test result on four sugarcane varieties commonly grown in Takalar Sugar Factory showed that infectivity of mycorrhizal isolate of Acaulospora sp. was the highest (75%) and significantly different (LSD’test, p <0,05) compared to that of Glomus sp. (66%).
  PubDate: 2021-09-04
  DOI: 10.18196/pt.v9i2.4026
  Issue No: Vol. 9, No. 2 (2021)