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Pengaruh frekuensi pemupukan setelah forcing terhadap produktivitas buah tanaman nanas (Ananas comosis [L.] Merr.) Azizah, Nur; Widyastuti, R. A. Diana; Karyanto, Agus; Ginting, Yohannes Cahya
JURNAL AGROTROPIKA Vol 22, No 2 (2023): Jurnal Agrotropika Vol 22 No 2, Oktober 2023
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/ja.v22i2.7697

Pineapple (Ananas comosus [L.] Merr) is one of the potential horticultural commodities and is a mainstay of exports in Indonesia. Pineapple fruit productivity can be increased through the fertilization process. One of the fertilization processes in pineapple plants is fertilization after forcing. The nutrients needed by pineapple plants after forcing are nitrogen and potassium which can support plant growth and increase pineapple fruit production. The purpose of this study was to determine the effect of the frequency of fertilization after forcing and to find out which treatment had the highest productivity. The research was conducted from October 2022 to April 2023 at the Central Lampung Pineapple Plantation, Lampung Province. This study used a single factor randomized block design (RBD), namely the frequency of fertilization on the day after forcing (HSF). The treatment consisted of four levels, namely twice fertilization given at 20 and 55 HSF (P1), two times fertilization given at 15 and 30 HSF (P2), three times fertilization given at 15, 30, 45 HSF (P3) and four times of fertilization given at 15, 30, 45, 60 HSF (P4). Each fertilization application uses Urea 50 kg/ha and K2SO4 75 kg/ha. Each treatment was repeated four times to obtain 16 experimental units. The results showed that the frequency of fertilization after forcing had an effect on the weight of 12 eyed fruit, the length of 11 and 12 eyed fruit, the diameter of 12 eyed fruit, and the weight of 12 eyed crowns in pineapple plants. The fertilization that was able to produce the best pineapple fruit productivity was fertilization with twice the frequency at 15 HSF and 30 HSF which produced the highest production potential compared to the control treatment with a difference of 2.51%.Keywords : pineapple, fertilization, HSF (Days After Forcing)

Pengaruh Metode Aplikasi dan Konsentrasi Gibberellic Acid (GA3) terhadap Fase Pertumbuhan Vegetatif Tanaman Nanas (Ananas comosus [L.] Merr) Maraaini, Ajeng; Widyastuti, R. A. Diana; Warganegara, Hayane Adeline; Karyanto, Agus
JURNAL AGROTROPIKA Vol 23, No 1 (2024): Jurnal Agrotropika Vol 23 No 1, Mei 2024
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/ja.v23i1.7698

Increasing the production of pineapple fruit can be done by manipulating the plant using Gibberellic Acid Growth Regulatory Substance (ZPT). The purpose of this study was to determine the effect of GA3 concentration and application method, as well as its interaction in increasing the vegetative growth of pineapple plants. Data collection was carried out in November 2022- February 2023 at a pineapple plantation company in Central Lampung. Treatments were arranged factorial (3x2) using a randomized block design with 3 replications. The first factor was Gibberellin (A) which consisted of three levels, (A1) 0 ppm GA3, (A2) 200 ppm GA3, and (A3) 400 ppm GA3. The second factor is the application method (B) which consists of 2 levels, namely (B1) Application on the top of the leaf (B2) Application on the bottom of the leaf. The observed variables included plant height, stem diameter, number of leaves, D-leaf length, D-leaf width, number of roots, root length, fresh weight of roots, fresh weight of plants. Homogeneity of variance between treatments was tested by Barlett's test and additivity using Tukey's test and then analysis of variance was carried out. Separation of the mean was carried out using the least significant difference test (LSD) at the 5% level. The results showed that 400 ppm GA3 was better than the control in affecting plant fresh weight with a difference of 630,7 g, the treatment of the application method on the leaves was better than the bottom leaf in affecting plant fresh weight with a difference 201,4 g. Treatment with a concentration of 40 ppm using the leaf application method was better than the control treatment. It is suggested to do further research related to the effect of giving GA3 on the generative phase of pineapple plants.Keywords : Gibberellic Acid, application method, pinneaple

PENGARUH JENIS MULSA DAN PUPUK TERHADAP PERTUMBUHAN GULMA DAN TANAMAN SERTA PRODUKSI PAKCOY (Brassica rapa Subsp. Chinensis) Rahayu, Widia Putri; Widyastuti, R. A. Diana; Septiana, Liska Mutiara; Pujisiswanto, Hidayat; Rugayah, Rugayah
Jurnal Agrotek Tropika Vol 12, No 2 (2024): JURNAL AGROTEK TROPIKA VOL 12, Mei 2024
Publisher : Departement of Agrotechnology, Agriculture Faculty, Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jat.v12i2.9009

Jenis sayuran yang banyak diminati karena memiliki waktu tanam cukup singkat yaitu Pakcoy (Brassica rapa subsp. Chinensis). Kandungan gizi yang terdapat dalam pakcoy dan bermanfaat bagi kesehatan membuat pakcoy digemari oleh masyarakat. Hal tersebut dapat menjadi peluang bisnis bagi para petani karena pakcoy memiliki permintaan pasar tinggi dan budidaya yang cukup singkat. Kegiatan budidaya yang belum tepat terutama pada iklim mikro dan pemupukan menjadi salah satu penyebab terjadinya penurunan produksi pakcoy. Dalam meningkatkan produktifitas pakcoy dapat dilakukan dengan pengendalian gulma dan memperbaiki iklim mikro melalui aplikasi mulsa organik serta pemupukan melalui aplikasi pupuk. Tujuan dari dilakukannya penelitian ini untuk mengetahui penggunaan jenis mulsa dan pupuk serta interaksi antar keduanya berpengaruh terhadap pertumbuhan gulma dan tanaman serta produksi pakcoy. Penelitian dilaksanakan pada bulan Januari-April 2023 di Laboratorium Lapang Terpadu (LTPD), Universitas Lampung. Penelitian ini dirancang dalam Rancangan Acak Kelompok (RAK) faktorial yang terdiri dari dua faktor yaitu pemberian mulsa (B0, B1, B2) dan pemberian pupuk (P0, P1, P2) dan diulang sebanyak sebanyak tiga kali dengan total sebanyak 27 satuan percobaan. Data hasil penelitian dilakukan uji homogenitas yang diuji dengan uji Barlett dan uji Aditivitas data dengan dilakukan uji Tukey. Bila asumsi terpenuhi, data dianalisis dengan analisis ragam dan uji Beda Nyata Terkecil (BNT) 5%. Hasil penelitian menunjukkan bahwa penggunaan jenis mulsa alang-alang pada 4 MST dan interaksi mulsa alang-alang dengan pupuk kandang ayam pada 6 MST mampu menekan pertumbuhan gulma. Sedangkan, penggunaan kombinasi pupuk urea dengan pupuk kandang ayam meningkatkan produksi bobot segar tanaman. Sementara itu, jenis gulma yang mendominasi dalam penggunaan jenis mulsa dan jenis pupuk yaitu Cleome rutidosperma, Cyperus kyllingia, Euphorbia hirta, dan. Richardia scabra.

Pengaruh frekuensi pemupukan setelah forcing terhadap produktivitas buah tanaman nanas (Ananas comosis [L.] Merr.) Azizah, Nur; Widyastuti, R. A. Diana; Karyanto, Agus; Ginting, Yohannes Cahya
JURNAL AGROTROPIKA Vol. 22 No. 2 (2023): Jurnal Agrotropika Vol 22 No 2, Oktober 2023
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/ja.v22i2.7697

Pineapple (Ananas comosus [L.] Merr) is one of the potential horticultural commodities and is a mainstay of exports in Indonesia. Pineapple fruit productivity can be increased through the fertilization process. One of the fertilization processes in pineapple plants is fertilization after forcing. The nutrients needed by pineapple plants after forcing are nitrogen and potassium which can support plant growth and increase pineapple fruit production. The purpose of this study was to determine the effect of the frequency of fertilization after forcing and to find out which treatment had the highest productivity. The research was conducted from October 2022 to April 2023 at the Central Lampung Pineapple Plantation, Lampung Province. This study used a single factor randomized block design (RBD), namely the frequency of fertilization on the day after forcing (HSF). The treatment consisted of four levels, namely twice fertilization given at 20 and 55 HSF (P1), two times fertilization given at 15 and 30 HSF (P2), three times fertilization given at 15, 30, 45 HSF (P3) and four times of fertilization given at 15, 30, 45, 60 HSF (P4). Each fertilization application uses Urea 50 kg/ha and K2SO4 75 kg/ha. Each treatment was repeated four times to obtain 16 experimental units. The results showed that the frequency of fertilization after forcing had an effect on the weight of 12 eyed fruit, the length of 11 and 12 eyed fruit, the diameter of 12 eyed fruit, and the weight of 12 eyed crowns in pineapple plants. The fertilization that was able to produce the best pineapple fruit productivity was fertilization with twice the frequency at 15 HSF and 30 HSF which produced the highest production potential compared to the control treatment with a difference of 2.51%.Keywords : pineapple, fertilization, HSF (Days After Forcing)

Pengaruh Metode Aplikasi dan Konsentrasi Gibberellic Acid (GA3) terhadap Fase Pertumbuhan Vegetatif Tanaman Nanas (Ananas comosus [L.] Merr) Maraaini, Ajeng; Widyastuti, R. A. Diana; Warganegara, Hayane Adeline; Karyanto, Agus
JURNAL AGROTROPIKA Vol. 23 No. 1 (2024): Jurnal Agrotropika Vol 23 No 1, Mei 2024
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/ja.v23i1.7698

Increasing the production of pineapple fruit can be done by manipulating the plant using Gibberellic Acid Growth Regulatory Substance (ZPT). The purpose of this study was to determine the effect of GA3 concentration and application method, as well as its interaction in increasing the vegetative growth of pineapple plants. Data collection was carried out in November 2022- February 2023 at a pineapple plantation company in Central Lampung. Treatments were arranged factorial (3x2) using a randomized block design with 3 replications. The first factor was Gibberellin (A) which consisted of three levels, (A1) 0 ppm GA3, (A2) 200 ppm GA3, and (A3) 400 ppm GA3. The second factor is the application method (B) which consists of 2 levels, namely (B1) Application on the top of the leaf (B2) Application on the bottom of the leaf. The observed variables included plant height, stem diameter, number of leaves, D-leaf length, D-leaf width, number of roots, root length, fresh weight of roots, fresh weight of plants. Homogeneity of variance between treatments was tested by Barlett's test and additivity using Tukey's test and then analysis of variance was carried out. Separation of the mean was carried out using the least significant difference test (LSD) at the 5% level. The results showed that 400 ppm GA3 was better than the control in affecting plant fresh weight with a difference of 630,7 g, the treatment of the application method on the leaves was better than the bottom leaf in affecting plant fresh weight with a difference 201,4 g. Treatment with a concentration of 40 ppm using the leaf application method was better than the control treatment. It is suggested to do further research related to the effect of giving GA3 on the generative phase of pineapple plants.Keywords : Gibberellic Acid, application method, pinneaple

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