scholarly journals Aplikasi POC POMI dan Kompos Tricho Jagung Terhadap Pertumbuhan Kailan (Brassica oleraceae.L)

Author(s):  
Wahyudi Narullova

Penelitian ini bertujuan untuk melihat dampak konsentrasi POC POMI dengan dosis kompos tricho jagung pada pertumbuhan kailan (Brassica oleraceae. L). Penelitian dilaksanakan di dalam Screen House Auto Agronom Fakultas Pertanian Universitas Islam Riau (UIR), Kota Pekanbaru. Penelitian ini adalah percobaan faktorial 4x4 dalam Rancangan Acak Lengkap (RAL) yang terdiri dari dua faktor, yaitu faktor P (POC POMI) yang terdiri dari empat taraf perlakuan dan faktor T (Kompos Tricho Jagung) juga dengan empat taraf perlakuan dengan tiga kali ulagan. Sehingga terdapat 48 plot, dalam satu plot terdapat 8 tanaman sedangkan sampel diambil 4 tanaman secara acak pada masing – masing plot. Secara keseluruhan jumlah tanaman kailan yang digunakan sebanyak 384 batang. inggi tanaman (cm), jumlah daun (helai) dan volume akar (cm3) merupakan parameter utama dalam penelitian ini. Interaksi konsentrasi POC POMI serta dosis kompos tricho jagung menunjukkan pengaruh pada tinggi tanaman dengan perlakuan terbaik konsentrasi POC POMI 15 ml/polybag serta kompos tricho jagung dosis 150 g / polybag. Perlakuan tunggal POC POMI berpengaruh nyata terhadap seluruh parameter pengamatan dengan perlakuan terbaik konsentrasi POC POMI 15 ml/polybag. Sedangkan pemberian kompos tricho jagung secara tunggal juga pengaruh nyata terhadap seluruh parameter pengamatan. Perlakuan terbaik dengan dosis kompos tricho jagung 150 g / polybag.

2020 ◽  
Vol 3 (2) ◽  
pp. 36-45
Author(s):  
Fitria Eka Handayani ◽  
Slamet Rohadi S ◽  
Joko Maryanto

Penelitian ini bertujuan untuk 1) mengetahui pengaruh komposisi media tanam terhadap pertumbuhan dan hasil tanaman kailan, 2) mengetahui pengaruh dosis pupuk nitrogen terhadap pertumbuhan dan hasil tanaman kailan, 3) mengetahui pengaruh kombinasi komposisi media tanam dan dosis pupuk nitrogen terhadap pertumbuhan dan hasil tanaman kailan. Penelitian ini dilaksanakan di screen house Fakultas Pertanian Universitas Jenderal Soedirman, Karangwangkal, Purwokerto dengan ketinggian 110 m di atas permukaan laut pada bulan Januari sampai Februari 2016. Rancangan percobaan yang digunakan adalah Rancangan Acak Kelompok (RAK) pola faktorial dengan 2 faktor perlakuan dengan 3 ulangan. Faktor pertama adalah komposisi media tanam yaitu tanah : cocopeat : arang sekam (1:1:1) (M1), tanah : cocopeat : arang sekam (2:1:1) (M2), tanah : cocopeat : arang sekam (1:2:1) (M3), tanah : cocopeat : arang sekam (1:1:2) (M4). Faktor kedua adalah dosis pupuk nitrogen, yaitu 0 kg N/ha (N0), 100 kg N/ha (N1), 200 kg N/ha N (N2), dan 300 kg N/ha N (N3). Variabel yang diamati adalah tinggi tanaman, jumlah daun, luas daun, bobot tanaman segar, bobot tajuk segar, bobot tajuk kering, bobot akar segar, dan bobot akar kering. Data hasil pengamatan dianalisis dengan menggunakan uji F dengan taraf kesalahan 5%, apabila terdapat pengaruh perlakuan dilanjutkan dengan DMRT (Duncan’s Multiple Range Test) pada taraf kesalahan 5%. Hasil penelitian menunjukkan bahwa komposisi media tanam meningkatkan tinggi tanaman, jumlah daun, luas daun, bobot tanaman segar dan bobot tajuk segar. Komposisi media tanam terbaik adalah media tanah,cocopeat dan arang sekam dengan perbandingan 2:1:1 (M2). Dosis pupuk nitrogen meningkatkan tinggi tanaman, jumlah daun, luas daun, bobot tanaman segar, bobot tajuk segar, bobot tajuk kering, bobot akar segar, dan bobot akar kering. Dosis pupuk nitrogen yang tepat adalah 100 kg N/ha (N1). Kombinasi komposisi media tanam dan dosis pupuk nitrogen meningkatkan tinggi tanaman dan jumlah daun. Kombinasi yang tepat terdapat pada komposisi media tanam tanah, cocopeat dan arang sekam dengan perbandingan 2:1:1 dan dosis pupuk nitrogen 100 kg/ha (M2N1)


2011 ◽  
Vol 16 (1) ◽  
Author(s):  
Ahadiyat Yugi Rahayu ◽  
Tri Harjoso

Tujuan dari penelitian ini adalah untuk mengetahui pengaruh aplikasi abu sekam terhadap kandungan prolin dan silikat daun serta kualitas hasil yaitu protein dan amilosa biji padi gogo dan hubungan korelasi antar keempat komponen tersebut pada kondisi pertanaman 80 persen kapasitas lapang pada skala pot. Penelitian dilakukan di polibag dalam screen house Fakultas Pertanian Unsoed dengan menggunakan rancangan acak kelompok pola faktorial dengan faktor varietas (Situ patenggang, Limboto, Towuti, Batutegi dan Aek sibundong) dan faktor abu sekam (0, 2, 4, 6 t/ha), diulang tiga kali. Hasil penelitian menunjukan bahwa pemberian abu sekam dosis 2−6 t/ha mampu meningkatkan kandungan silikat daun antara 18,49−29,43% dan menurunkan kandungan amilosa biji pada lima varietas sekitar 4,19−6,92%. Pemberian abu sekam dosis 2−6 t/ha mampu meningkatkan kandungan prolin daun antara 27,56−70,63% dan protein biji antara 2,35−16,71%. Antarvarietas menunjukan bahwa kandungan prolin tertinggi dihasilkan oleh varietas Batu tegi 18,58 persen dan protein biji pada varietas Situ patenggang 9,55%. Terdapat korelasi antar karakter fisiologis yaitu antara silikat-prolin (0,62) dan kandungan protein-amilosa biji (-0,78).


2014 ◽  
Vol 32 (3) ◽  
pp. 507-513
Author(s):  
R.O. Adereti ◽  
F.O Takim ◽  
Y.A. Abayomi

An experiment was laid down in a screen house to determine the distribution of weed seeds at different soil depths and periods of cultivation of sugarcane in Ilorin, Nigeria. Soil samples from different depth levels (0-10 cm, 11-20 cm and 21-30 cm) were collected after harvesting of canes from three different land use fields (continuous sugarcane cultivation for > 20 years, continuous sugarcane cultivation for < 10 years after long fallow period and continuous sugarcane cultivation for < 5 years after long fallow period) in November, 2012. One kilogram of the sieved composite soil samples was arranged in the screen house and watered at alternate days. Germinating weed seedlings were identified, counted and then pulled out for the period of 8 months. Land use and soil depth had a highly significant (p £ 0.05) effect on the total number of weeds that emerged from the soil samples. The 010 cm of the soil depth had the highest weed seedlings that emerged. There was an equal weed seed distribution at the 11-20 cm and 21-30 cm depths of the soil. Sugarcane fields which have been continuously cultivated for a long period of time with highly disturbing soil tillage practices tend to have larger seed banks in deeper soil layers (11-20 cm and 21-30 cm) while recently opened fields had significantly larger seed banks at the 0-10 cm soil sampling depth.


LWT ◽  
2015 ◽  
Vol 61 (1) ◽  
pp. 258-262 ◽  
Author(s):  
Mayra Cristina Silva-Pereira ◽  
José Augusto Teixeira ◽  
Valdir Aniceto Pereira-Júnior ◽  
Ricardo Stefani

2010 ◽  
Vol 45 (3) ◽  
pp. 284-293
Author(s):  
Rachel Pinton ◽  
Anelise Dias ◽  
Terezinha Ferreira Xavier ◽  
Luc Felicianus Marie Rouws ◽  
Gustavo Ribeiro Xavier ◽  
...  

O objetivo deste trabalho foi caracterizar e agrupar rizobactérias, isoladas de hortaliças, quanto à morfologia cultural, riqueza e diversidade e avaliar a biossíntese de autoindutores N-acil lactonas homoserinas (ALH) e a capacidade de formação de biofilmes. Sete estirpes também foram avaliadas quanto ao potencial de promoção de crescimento de Brassica oleraceae var. acephala em casa de vegetação. Para verificar a produção de ALH, foram realizados ensaios com Agrobacterium tumefaciens estirpe NT1 como sistema repórter. A formação de biofilme foi avaliada pelo cultivo do isolado em meio líquido. A promoção do crescimento foi avaliada após inoculação das estirpes em plantas de couve-de-folha pela determinação da produção de massa de matérias fresca e seca. A maior diversidade morfocultural foi encontrada entre as estirpes isoladas de couve-de-folha. De um total de 112 estirpes testadas, 13% foram positivas quanto à produção de ALH; de 91 estirpes, 96% foram capazes de formar biofilmes; e de 79 estirpes, 11% foram positivas para ambas as características. Foram observadas diferenças significativas na massa de matéria seca das raízes com inoculação de 10(9) UFC mL-1 da estirpe R142, que incrementou em 55% a massa de matéria seca das raízes de couve, em relação ao controle. Não há relação entre a capacidade de formar biofilme e a detecção de ALH produzidos pelas rizobactérias avaliadas.


2018 ◽  
Vol 10 (4) ◽  
pp. 86 ◽  
Author(s):  
Gonné Sobda ◽  
Fonji Maureen Atemkeng ◽  
Ousmane Boukar ◽  
Chistian Fatokun ◽  
Pangirayi Bernard Tongoona ◽  
...  

Two sets of six generations (P1, P2, F1, F2, BC1P1, BC1P2) of cowpea were developed from crosses of contrasting inbred lines VYA (susceptible) × SANZI (resistant) and LORI (susceptible) × SANZI (resistant). The aim of this study was to determine the inheritance and elucidate the genetic control of cowpea resistance to thrips. The first set (VYA × SANZI) was evaluated under natural thrips infestation in the field in a completely randomized block design with three replications. The second set (LORI × SANZI) was screened using artificial thrips infestation in the screen house. In each trial, data were recorded on 150 individual plants. These included the score of thrips damages using the scale of one to nine, number of thrips per flower, number of pods per plant, pod weight per plant and grain weight per plant. The generation mean analysis revealed that both additive and non-additive types of gene effects were significant. Dominance × dominance was the most predominant type of gene effects for thrips resistance, suggesting that breeders should delay selection to late generations to allow advancement of as many high-potential recombinants as possible during hybridization. The number of genes that control the expression of number of thrips per flower was three and ranged from three to four, for score of thrips damages. High broad sense and moderate narrow sense heritability were observed ranging from 0.53 to 0.65 and 0.14 to 0.36, respectively for all of the traits measured. 


Meat Science ◽  
2019 ◽  
Vol 149 ◽  
pp. 134-140 ◽  
Author(s):  
Annamaria Perna ◽  
Amalia Simonetti ◽  
Giulia Grassi ◽  
Emilio Gambacorta

2015 ◽  
Vol 34 (2) ◽  
pp. 113
Author(s):  
Sudir Sudir ◽  
Dini Yuliani ◽  
Lalu Wirajaswadi

<p>A study was carried out to identify the composition and distribution of Xanthomonas oryzae pv. oryzae (Xoo) pathotypes on rice crop in West Nusa Tenggara, during the 2012 planting season. Three activities were conducted, namely collection of rice leaf samples from the fields, isolation of Xoo from the leaf samples at the laboratory, and testing pathotypes of Xoo at the screen house. Rice leaves showing typical bacterial leaf blight (BLB) symptom were collected from various farmers’ fields. The samples were detached and put into paper envelopes, and were taken to the laboratory for isolation of Xoo, at the Laboratory of Pythopathology of Indonesian Center for Rice Research (ICRR), Sukamandi. Pathotype testing was done in the ICRR screen house by inoculating the leaves of five differential rice varieties using inocula of the Xoo isolates. Resistance of the rice differential varieties was determined based on the BLB disease severity. Inoculated plant with disease severity ≤11% was considered resistant (R) and disease severity &gt;11% was susceptible (S). From the 240 samples of rice leaf infected with BLB collected from West Nusa Tenggara, 232 Xoo isolates were obtained. The Xoo pathotype identification showed that pathotype IV was the most dominant in West Nusa Tenggara during the 2012 planting season, numbering 118 isolates or 51.0% out of the total isolates, followed by pathotype VIII (67 isolates or 29.0%), and pathotype III (47 isolates or 20.0%).</p>


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