Sari. Induksi mutasi radiasi merupakan metode efektif untuk meningkatkan keragaman tanaman. Kajian akan sifat-sifat yang dibawa oleh generasi galur padi hasil mutasi penting untuk dipelajari. Penelitian ini bertujuan untuk mengetahui pengaruh radiasi sinar gamma terhadap sifat dormansi fisiologis after ripening pada galur padi mutan organik dan mengetahui keefektifan penggunaan konsentrasi KNO3 terhadap upaya pematahan dormansinya. Penelitian dilaksanakan di Laboratorium Ilmu dan Teknologi Benih, Fakultas Pertanian, Universitas Syiah Kuala. Penelitian ini menggunakan Rancangan Acak Lengkap (RAL) pola faktorial dengan dua faktor serta menggunakan uji lanjut Tukey pada taraf nyata 5%. Faktor pertama adalah galur padi mutan organik terdiri 5 taraf yaitu G0 = tanpa radiasi (Sanbei Simeleu) sebagai pembanding, G1= Sultan Unsrat, G2= 39e, G3= 75d, G4=57e. Faktor kedua adalah konsentrasi KNO3 terdiri 3 taraf yaitu K0 = 0%, K1 = 1%, dan K2 = 2%. Parameter yang diamati adalah potensi tumbuh maksimum, daya berkecambah, indeks vigor, keserempakan tumbuh, kecepatan tumbuh relatif, berat kering kecambah normal, dan persistensi dormansi. Hasil penelitian menunjukkan bahwa galur padi mutan organik berpengaruh sangat nyata terhadap berat kering kecambah normal dan berpengaruh nyata terhadap potensi tumbuh maksimum. Konsentrasi KNO3 berpengaruh sangat nyata terhadap daya berkecambah dan berat kering kecambah normal, serta berpengaruh nyata terhadap potensi tumbuh maksimum dan kecepatan tumbuh relatif. Terdapat interaksi sangat nyata antara galur padi mutan organik dan konsentrasi KNO3 terhadap berat kering kecambah normal, dan interaksi nyata terhadappotensi tumbuh maksimum, dan daya berkecambah. Kombinasi terbaik dijumpai pada galur padi mutan organik 57e dan konsentrasi KNO3 2%.Kata kunci: Setelah pematangan ∙ Dormansi ∙ Galur mutan ∙ KNO3 ∙ Padi Abstract. This study aims to determine the effect of gamma radiation on the physiological dormancy after-ripening of organic mutant rice lines and the effectiveness using KNO3 concentrations on efforts to break dormancy. The study was conducted at the Seed Science and Technology Laboratory, Syiah Kuala University. This research used a completely randomized design (CRD) with two factors and Tukey test at significance level of 5%. The first factor was the organic mutant rice lines that consisted of 5 levels. There were G0 = without radiation (Sanbei Simeleu) as a comparison, G1 = Sultan Unsrat, G2 = 39e, G3 = 75d, and G4 = 57e. The second factor was KNO3 concentration, that consisted of 3 levels. There were K0 = 0%, K1 = 1%, and K2 = 2%. The observed parameters were dormancy persistence, maximum growth potential, germination, vigour index, the simultaneity of growth, relative growth speed, and normal germination dry weight,. The results showed that the organic mutant rice lines had a very significant effect on the dry weight of normal sprouts and had a significant effect on maximum growth potential. KNO3 concentration has a very significant effect on germination and dry weight of normal sprouts and has a significant effect on the maximum growth potential and relative growth speed. There was a highly significant interaction between organic mutant rice lines and KNO3 concentration on the normal dry weight of the sprouts, and significant interaction with maximum growth potential and germination. The best interaction was found in organic mutant rice lines 57e and KNO3 concentration of 2%.Keywords: After ripening ∙ Dormancy ∙ KNO3 ∙ Mutantline ∙ Rice
Abstrak. Penelitian ini bertujuan untuk mengetahui pengaruh pertumbuhan dan hasil bawang merah terhadap kombinasi dosis pupuk NPK dengan pupuk kandang. Penelitian ini dilaksanakan di lahan petani Desa Empetrieng Kecamatan Darul Kamal Kabupaten Aceh Besar, yang berlangsung dari bulan November 2015 sampai Januari 2016. Penelitian ini menggunakan Rancangan Acak Kelompok (RAK) pola non faktorial dengan 3 kali ulangan. Perlakuan dosis pupuk terdiri atas 9 perlakuan, sehingga diperoleh 27 satuan percobaan. Faktor yang diteliti ialah dosis pupuk yang terdiri dari 9 perlakuan yaitu: kontrol, 90 g NPK, 110 g NPK, 1,8 kg pupuk kandang, 2,4 kg pupuk kandang, 90 g NPK dan 1,8 kg pupuk kandang, 90 g NPK dan 2,4 kg pupuk kandang, 110 g NPK dan 1,8 kg pupuk kandang, 110 g NPK dan 2,4 kg pupuk kandang. Hasil penelitian menunjukkan bahwa perlakuan kombinasi dosis pupuk NPK dengan pupuk kandang berpengaruh sangat nyata terhadap bobot berangkasan basah, bobot berangkasan kering, bobot umbi kering, potensi hasil, dan berpengaruh tidak nyata terhadap tinggi tanaman umur 14, 28 dan 42 HST, jumlah daun umur 14, 28 dan 42 HST dan jumlah umbi. Kombinasi perlakuan 110 g NPK dan 2,4 kg pupuk kandang memberikan pengaruh yang terbaik dibandingkan perlakuan lainnya.Abstract. This study aimed to determine the effect of growth and yield the onion to the combination dose of NPK fertilizer and manure. This research was conducted in Empetrieng village, Darul Kamal, Aceh Besar, from November 2015 through January 2016. This study used a randomized block design (RBD) non factorial pattern with three replications. Dosage of fertilizer consisted of 9 treatments, in order to obtain 27 units of trial. Factors to be examined is that of fertilizers is comprised of 9 treatments, namely: control, 90 g of NPK, 110 g of NPK, manure 1.8 kg, 2.4 kg of manure, 90 g and 1.8 kg NPK manure, 90 g NPK and 2.4 kg of manure, 110 g and 1.8 kg NPK fertilizer, NPK 110 g and 2.4 kg of manure. The results showed that the combination treatment dose of NPK fertilizer with manure very significant effect on weight stover wet, weight stover dry weight of dried shallots, yield potential, and the effect was not significant on plant height ages 14, 28 and 42 DAP, the number of leaf age 14, 28 and 42 DAP and the number of shallots. Combination treatment of 110 g NPK and 2.4 kg NPK manure gives the best effect than other treatments.
Abstrak. Penelitian ini bertujuan untuk mengetahui dosis kompos jerami dan pemangkasan terhadap pertumbuhan dan hasil tanaman mentimun sehingga dapat menghasilkan pupuk yang ekonomis dan berproduksi tinggi untuk penanaman mentimun serta interaksi kedua faktor tersebut. Penelitian ini menggunakan Rancangan Acak Kelompok (RAK) pola faktorial 4 x 3 dengan 3 ulangan yang terdiri dari 2 faktor. Pengamatan yang diteliti yaitu panjang tanaman, umur berbunga, jumlah bunga betina, diameter buah, jumlah buah pertanaman, panjang buah, berat buah pertanaman, berat per buah dan potensi hasil. Hasil penelitian ini menunjukkan bahwa dosis kompos jerami berpengaruh sangat nyata terhadap diameter buah dan berpengaruh nyata terhadap berat per buah mentimun. Dosis terbaik pada hasil tanaman mentimun dijumpai pada perlakuan dosis kompos jerami 30 dan 20 ton/ha. Pada faktor pemangkasan berpengaruh sangat nyata terhadap panjang tanaman 21 HSPT dan 28 HSPT serta berpengaruh nyata terhadap jumlah bunga betina, panjang buah, berat buah per tanaman, berat per buah dan potensi hasil. pemangkasan terbaik pada pertumbuhan dan hasil tanaman mentimun dijumpai pada perlakuan tanpa pemangkasan dan pemangkasan tunas pada ruas 6-10.Effect of Straw Compost Dosage And Pruning on Growth and Cucumber Plant Results (cucumis sativus L.)Abstract : This study aims to determine the dosage of straw compost and pruning to the growth and yield of cucumber plants so as to produce fertilizer that is economical and high production for cucumber planting as well as interaction of these two factors. This study used Randomized Block Design (RAK) 4 x 3 factorial pattern with 3 replications consisting of 2 factors. Observations observed were plant length, flowering age, number of female flowers, fruit diameter, number of fruit crops, fruit length, fruit crop weight, weight per fruit and yield potential. The results of this study indicate that the dosage of straw compost has a very significant effect on the fruit diameter and has a significant effect on the weight per cucumber fruit. The best doses on cucumber yields were found in the treatment of straw compost doses of 30 and 20 tons / ha. In the pruning factor very significant effect on the length of plants 21 HSPT and 28 HSPT and significantly affect the number of female flowers, fruit length, fruit weight per plant, weight per fruit and yield potential. the best pruning on growth and yield of cucumber crops was found in the treatment without pruning and pruning of shoots in the 6-10 segments.
Abstrak. Biological seed treatment merupakan salah satu perlakuan benih menggunakan mikroorganisme seperti rizobakteri pemacu pertumbuhan tanaman (RPPT). Penelitian ini bertujuan untuk mengetahui jenis rizobakteri dan kerapatan inokulum yang dapat meningkatkan viabilitas dan vigor benih cabai kadaluarsa. Penelitian ini menggunakan Rancangan Acak Lengkap (RAL) pola faktorial dengan 2 faktor dan 3 ulangan. Faktor pertama adalah jenis rizobakteri (R) terdiri atas lima taraf yaitu R1: Necercia sp; R2:Bacillus polymixa; R3: Actinobacillus suis; R4: Azotobacter sp; R5: Pseudomonas capacia. Faktor kedua adalah kerapatan inokulum rizobakteri terdiri dari tiga taraf yaitu K1: 107 cfu/ml; K2: 108 cfu/ml; K3: 109 cfu/ml. Hasil penelitian ini menunjukkan bahwa perlakuan benih menggunakan rizobakteri jenis Necercia sp dengan kerapatan inokulum 108 cfu/ml nyata meningkatkan vigor benih pada tolok ukur indeks vigor yaitu 40% dan Pseudomonas capacia dengan kerapatan inokulum 109 cfu/ml juga merupakan kombinasi perlakuan terbaik dalam meningkatkan berat kering kecambah normal yaitu 69,33 mg.Treatment Of Plant Growth Promoting Rhizobacteria (PGPR)With Multiple Levels of Rhizobacteria Inoculum Density On Viability and Vigor Of Expired Red Chilli Seeds (Capsicum annuum L.Abstract. Biological seed treatment is one of the seed treatment using microorganisms such as plant growth-promoting rhizobacteria (PGPR). This study aims to determine the type of rhizobacteria and inoculum density that can increase the viability and vigor of expired chili seeds. This research uses Completely Randomized Design (CRD) factorial pattern with 2 factors and 3 replications. The first factor is the type of rhizobacteria (R) consists of five levels, namely R1: Necercia sp; R2: Bacillus polymixa; R3: Actinobacillus suis; R4: Azotobacter sp; R5: Pseudomonas capacia. The second factor is the density of rhizobacteria inoculum consisting of three levels namely K1: 107 cfu/ml; K2: 108 cfu/ml; K3: 109 cfu/ml. The results of this study showed that the seed treatment using the Necercia sp-type rizobacteria with 108 cfu/ml inoculum density significantly increased the seed vigor on the vigor index benchmark of 40% and Pseudomonas capacia with 109cfu/ml inoculum density was also the best treatment combination in increasing dry weight normal sprout is 69,33 mg.
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