Amir Yassi
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Physiological responses of growth and production of baby corn (Zea mays Saccharata L.) due to application of agricultural waste based compost and NPK fertilizer Syamsir Pante Sukun; Amir Yassi; Ifayanti Ridwan Saleh
International Journal of Agriculture System VOLUME 8 ISSUE 2, DECEMBER 2020
Publisher : Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (305.152 KB) | DOI: 10.20956/ijas.v8i2.2599

Abstract

A trial was conducted to study the physiological responses of baby corn to changes in soil fertility by application of organic and inorganic fertilizers.  The research was conducted at the Teaching Farm, Faculty of Agriculture, Universitas Hasanuddin from May to August 2020. The experiment was arranged based on a factorial randomized block design (RBD) with two factors repeated 3 times. The first factor is the dosage of green compost consisted of four levels, namely 0, 3, 4, and 5 tons ha-1. The second factor was the percentage of NPK fertilization from the recommendations consisted of four levels, namely NPK 100%, 75%, 50%, and 25%. The results show that the treatment of 4 ton ha-1 of green compost resulted in the highest absorption rate of CO2 (336.2 µmol CO2 mol-1) and the highest humidity level (68.8%). 100% NPK fertilizer treatment showed the highest CO2 absorption rate (338.1 µmol CO2 mol-1), the highest leaf photosynthesis rate (36.1 µmol CO2m-2s-1). The treatment of 5 ton ha-1 of green compost and 100% NPK fertilizer resulted in the lowest transpiration rate (0.20 liters m-2s-1). The treatment of 3 ton ha-1 green compost and 100% NPK fertilizer resulted in earlier flowering age (46.3 days) and heaviest ear weight (63.67 g). The treatment of 5 ton ha-1 green compost with 50% NPK fertilizer resulted in the longest ear length with husk (21.72 cm). Treatment of 4 ton ha-1 green compost with 100% NPK fertilization resulted in the longest ear length without husk (10.52 cm).                       
PRODUKSI PADI DAN IKAN MAS PADA BERBAGAI PENGELOLAAN AIR, JENIS VARIETAS DAN DOSIS PAKAN IKAN DENGAN SISTEM MINAPADI Makmur Makmur; Amir Yassi; Edison Saade
Agros Journal of Agriculture Science Vol 25, No 3 (2023): edisi Juli
Publisher : Fakultas Pertanian, Universitas Janabadra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37159/jpa.v25i3.3037

Abstract

The aim of the study was to determine water management methods, varieties and doses of fish feed as well as the interactions between the three which resulted in high production of rice plants and carp in the Minapadi system. This research was conducted in Salumokanan Village, Mamasa Regency, West Sulawesi in January - June 2022. The design used was the Split Plot Design with the water management method as the main plot, the type of variety as the child plots and the dosage of carp feed as the children. plot. The water management method (P) as the main plot which consists of 2 levels, namely the wet dry management system / AWD (P1), the flooded irrigation system (P2). Subplots were rice varieties consisting of 2 levels, namely local varieties Mamasa (V1) and Inpari 30 (V2). The sub-plots were the dose of fish feed (D) which consisted of 3 levels, namely 1% fish weight (D1), 3% fish weight (D2) and 5% fish weight (D3). The results of the research on stagnant water management gave the highest yields for the number of productive tillers (12.78 stems), plant dry weight (40.81 g), absolute weight growth (73.06 g), specific growth rate (1.52%) and growth rate survival (94.44%). Wet dry water management yields the highest grain production per plot (8.77 kg). Inpari 30 variety had the best yields on plant dry weight (41.25 g), grain production per plot (8.69 g), absolute weight growth (72.61 g) and specific growth rate (1.51 g). Fish feed dose of 5% yielded the highest number of productive tillers (12.42 g), absolute weight growth (75.76 g) and specific growth rate (1.54%). Intraction of stagnant water management and fish feed dosage of 5% had the best results in absolute weight growth (86.00 g) and specific growth rate (1.63%). The interaction of 30 inpari varieties and 5% fish feed dose gave the best results on the number of productive tillers (13.33 stems), absolute weight growth (84.33 g) and specific growth rate (1.61%). The interaction of stagnant water management, Inpari 30 varieties and fish feed doses of 5% gave the best absolute weight growth (103.33 g) and specific growth rate (1.78%). Keywords: Minapadi, water management, feed dosage.