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Journal : Jurnal Pertanian Agros

PENGARUH PEMBERIAN DOSIS PUPUK ANORGANIK TUNGGAL N,P,K DAN JENIS PUPUK HAYATI TERHADAP PERTUMBUHAN DAN HASIL TANAMAN JAGUNG MANIS (Zea mays subsp. mays L.) Muhamad Akbar Amanda; Sri Ritawati; Nur Iman Muztahidin; Dewi Firnia
Agros Journal of Agriculture Science Vol 25, No 3 (2023): edisi Juli
Publisher : Fakultas Pertanian, Universitas Janabadra

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Abstract

This study aimed to determine the effect of single dose of inorganic fertilizer N,P,K and the type of biological fertilizer on the growth and yield of sweet corn (Zea mays subsp. mays L.). The study was arranged in a randomized block design (RBD) with two factors. The first factor was the dose of single inorganic fertilizer N,P,K, which consisted of 3 levels: D1: 100%, D2: 75%, and D3: 50%. The second factor is the type of biological fertilizer, which consisted of 3 levels: P1: Sinarbio, P2: Kayabio, and P3: Ecofert. The results showed that the application of a single inorganic fertilizer N,P,K at a dose of 75% had a significant effect on the parameters of plant height, number of leaves, stem diameter, number of cobs planted, cob weight with cornhusk, cob weight without cornhusk, and yield potential. The type of biofertilizer Sinarbio has a significant effect on the parameters of plant height, number of leaves, stem diameter, number of cobs planted, number of cobs per plot, cob weight with cornhusk, cob weight without cornhusk, and yield potential. The use of a single dose of inorganic fertilizer N,P,K can be reduced to a dose of 75% of the recommendation for sweet corn plants with the application of biofertilizer Sinarbio.
PENGARUH KONSENTRASI HORMON GIBERELIN (GA3) DAN AIR KELAPA TERHADAP VIABILITAS BENIH TANAMAN MANGGIS (Garcinia mangostana L.) Muhammad Fahmi Sulthan Hafda; Andi Apriany Fatmawaty; Dewi Firnia; Susiyanti Susiyanti
Agros Journal of Agriculture Science Vol 25, No 4 (2023): edisi Oktober
Publisher : Fakultas Pertanian, Universitas Janabadra

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Abstract

The research was aimed to determine the effect of gibberellin hormone (GA3) concentration and coconut water on the viability of mangosteen seeds (Garcinia mangostana L.). This research was conducted from July 2023 to September 2023, located in the screenhouse of the Faculty of Agriculture, Sultan Ageng Tirtayasa University. This study used a Factorial Randomized Complete Block Design (RCBD). The first factor is gibberellin hormone (GA3) with 2 levels, G0 (0 ppm) and G1 (75 ppm). The second factor is coconut water with 3 levels, K0 (0%), K1 (25%), and K2 (50%). Parameters observed in this study include the time of shoot emergence, germination capacity, maximum growth potential, normal germination, abnormal germination, non-germinating seeds, and plant height. The research results show that a concentration of 75 ppm gibberellic acid (GA3) has a positive effect on the emergence of shoots and germination capacity. A 50% concentration of coconut water also has a positive effect on the emergence of shoots and germination capacity. There is an interaction between the treatment of 75 ppm gibberellic acid (GA3) and 50% coconut water in the timing of shoot emergence and germination capacity. Keywords: coconut water, giberelin acid, mangosteen seeds INTISARIPenelitian ini bertujuan untuk mengetahui pengaruh konsentrasi hormon giberelin (GA3) dan air kelapa terhadap viabilitas benih manggis (Garcinia mangostana L.). Penelitian ini dilakukan pada bulan Juli 2023 hingga bulan September 2023, yang bertempat di screenhouse Fakultas Pertanian Universitas Sultan Ageng Tirtayasa. Penlitian ini menggunakan Rancangan Acak Kelompok (RAK) faktorial. Faktor pertama hormon giberelin (GA3) yang terdiri dari 2 taraf yaitu, G0 (0 ppm) dan G1 (75 ppm). Faktor kedua air kelapa yang terdiri dari 3 taraf yaitu, K0 (0%), K1 (25%), dan K2 (50%). Parameter yang diamati dalam penelitian ini adalah waktu muncul tunas, daya berkecambah, potensi tumbuh maksimum, kecambah normal, kecambah abnormal, benih tidak tumbuh, dan tinggi tanaman. Hasil penelitian menunjukkan konsentrasi hormon giberelin (GA3) 75 ppm memberikan pengaruh yang baik terhadap waktu muncul tunas dan daya berkecambah. Konsentrasi air kelapa 50% memberikan pengaruh yang baik terhadap waktu muncul tunas dan daya berkecambah. Terdapat interaksi perlakuan antara hormon giberelin (GA3) 75 ppm dan air kelapa 50% pada waktu muncul tunas dan daya berkecambah. Kata Kunci: air kelapa, hormon giberelin, benih manggis