scholarly journals PENGARUH DOSIS PAKLOBUTRAZOL TERHADAP PERTUMBUHAN DAN PRODUKSI BUNGA MATAHARI (Helianthus annuus L.)

2020 ◽  
Vol 5 (1) ◽  
pp. 27
Author(s):  
Laras Ayu Kinasih ◽  
Elfarisna Elfarisna

ABSTRAKTanaman bunga matahari pada umumnya masih dibudidayakan di lahan luas dan masih sedikit yang membudidayakannya dalam pot. Beragamnya jenis bunga matahari yang ditanam membuat orang untuk mengoptimalkan pertumbuhan tanaman tersebut. Salah satunya dengan pemberian zat pengatur tumbuh yaitu Paklobutrazol. Paklobutrazol merupakan jenis retardan yang digunakan untuk mempercepat pembungaan serta menghambat pertumbuhan tanaman. Penelitian bertujuan untuk mendapatkan dosis Paklobutrazol yang tepat untuk menghambat pertumbuhan tanaman bunga matahari. Penelitian dilaksanakan pada bulan Februari sampai Juni 2019 di Jalan Parakan, Pamulang Permai 2, Tangerang Selatan. Penelitian menggunakan Rancangan Kelompok Lengkap Teracak (RKLT) dengan 6 perlakuan dan 4 ulangan, yaitu P0 = kontrol, P1 = 50 mL/polibag, P2 = 100 mL/polibag, P3 =  150 mL/polibag, P4 = 200 mL/polibag, dan P5 = 250 mL/polibag dengan konsentrasi 50 ppm. Variabel yang diamati adalah tinggi tanaman, diameter batang, jumlah daun, jumlah ruas, jumlah cabang dan ranting, umur berbunga, diameter bunga primer, jumlah biji dan berat biji. Hasil penelitian dapat disimpulkan : Pemberian Paklobutrazol dengan berbagai dosis memberikan pengaruh yang sangat nyata umur 6 sampai 11 MST pada tinggi tanaman bunga matahari tetapi tidak berpengaruh nyata pada pengamatan lainnya. Perlakuan Paklobutrazol dosis 250 mL/polibag memberikan pengaruh yang terbaik dalam menekan tinggi tanaman dibandingkan dengan perlakuan kontrol.Kata kunci: Bunga matahari, paklobutrazol, dosisABSTRACTSunflower plants in general are still cultivated on vast grounds and still few are cultivating them in pots. The variety of the planted sunflowers makes people to optimize the growth of these crops. One of them with the provision of growing regulatory substances is Paklobutrazol. The liquid paklobutrazole used to accelerate the flowering and inhibit the growth of plants. The research aims for the proper Kokoro Paklobutrazol dosage to inhibit the growth of sunflower plants. Research conducted in February to June 2019 in Parakan Street, Pamulang Permai 2, South Tangerang. The study uses the randomized complete Block  design (RCBD) with 6 treatments and 4 replication, i.e. P0 = control, P1 = 50 mL/polybag, P2 = 100 mL/polybag, P3 = 150 mL/polybag, P4 = 200 mL/polybag, and P5 = 250 mL/polybag with a concentration of 50 ppm. The observed variable is height of the plant, diameter of the stem, number of leaves, number of sections, number of branches and ranting, age of flowering, Diameter of primary flowers, number of seeds and seed weight. The results of the study can be concluded: the administration of paklobutrazole with a variety of doses gives a very noticeable effect of 6 to 11 WAP on high sunflower plants but has no noticeable effect on other observations. Paklobutrazol treatment Dose 250 mL/Polybag gives the best influence in the high pressing of the plant compared to the treatment control.Keywords: Sunflower, paclobutrazol, doses

2020 ◽  
Vol 73 (3) ◽  
Author(s):  
Mst. Nusrat Jahan ◽  
Sushama Barua ◽  
Hasan Ali ◽  
Md. Noyon Ali ◽  
Md. Sazzad Hossain Chowdhury ◽  
...  

A field experiment was conducted comprising two varieties of mungbean, BARI Mung-5 (V1) and BARI Mung-6 (V2), and five levels of phosphorus fertilizer: triple super phosphate [Ca(H<sub>2</sub>PO<sub>4</sub>)] viz. T1 (control), T2 (42.5 kg P ha<sup>−1</sup>), T3 (85 kg P ha<sup>−1</sup>), T4 (127.5 kg P ha<sup>−1</sup>), and T5 (170 kg P ha<sup>−1</sup>). The experiment was organized in a randomized complete block design with three replications. V1 produced the highest number of pods per plant (7.65), whereas the maximum 1,000-seed weight (49 g) was produced by V2. The maximum plant height (30.89 cm), number of branches per plant (8.55), number of leaves per plant (19.05), number of pods per plant (10.25), pod length (8.95 cm), number of seeds per pod (9.11), 1,000-seed weight (48.17 g), and yield (1.05 t ha<sup>−1</sup>) were obtained from the T4 treatment. The interaction of phosphorus levels and varieties had a considerable effect on the growth, yield, and yield attributes of mungbean. The highest number of leaves (20.44) and number of pods (10.39) were obtained from V1 when 127.5 kg P ha<sup>−1</sup> (T4) was applied, whereas the maximum number of seeds per pod (9.25) and maximum pod length (9.09 cm) were obtained when  85 kg P ha<sup>−1</sup> and 42.5 kg P ha<sup>−1</sup>, respectively, were used. The highest number of branches per plant (8.87), 1,000-seed weight (52.83 g), and the maximum seed yield (1.14 t ha<sup>−1</sup>) were achieved from the treatment V2T4 owing to the interactive effect of phosphorus dose and mungbean variety.


2020 ◽  
Vol 4 (3) ◽  
pp. 453-456
Author(s):  
Paul Madina

A field experiment was carried out in the rainy season of 2019 in Gombe states, Nigeria. The experiment was carried out in Tal, Billiri Local Government, Gombe State. The aim of the experiment was investigate the performance of ten varieties of sesame. The ten different varieties were; E-8, NCRIBEN-01, NCRIBEN-02, NCRIBEM-031, YANDEV-55, EX-BR-1, EX-BR-2, E-SUDAN, 560-1 and LOCAL. The treatments were laid in a randomized complete block design with three replications. The treatments were combined to have 10 plots in a block with 1 meter between the block and 0.5 meters within the plots. The seeds were placed in 5cm depth at the spacing of 15 x 75cm. During the research growth parameters like plant height, number of leaves and number of branches were measured. Other growth parameters like days of 1st flower, 50% flower, days of maturity, number of capsule per plant, seeds per capsule, number of capsule per leaves axis, 1000 seed weight and seed yield were also recorded. The results of the experiment revealed that sesame generally responded to both varietal and fertilizer effects. All the parameters studied have significantly (P≤0.05) responded to the varietal effects, here variety NCRIBEN-01 and E-8 were observed to perform higher in both growth parameters, yield related character and overall yield. Based on the result obtained it can be suggested that the use of E-8, NCRIBEN-01, NCRIBEN-02, NCRIBEN-031, YANDEV-55 will give high yield followed by EX-BR-1, EX-BR-2, E-SUDAN and 506-1 leading to optimum yield for farmers in Tal, Billiri Local 


2018 ◽  
Vol 27 (2) ◽  
pp. 195
Author(s):  
Bina Karo ◽  
Agustina Erlinda Marpaung ◽  
Diny Djuariah

<p>Kubis bunga merupakan sayuran sehat yang banyak diminati konsumen. Dalam peningkatan produksi tanaman sayuran, khususnya kubis bunga yang perlu diperhatikan adalah kualitas benih. Oleh karena itu dilakukan kegiatan penelitian untuk menghasilkan benih kubis bunga yang bermutu. Penelitian bertujuan untuk mengetahui konsentrasi pupuk Boron yang tepat dan teknik penanaman untuk peningkatan perbenihan kubis bunga. Penelitian dilakukan di Kebun Percobaan Berastagi mulai dari bulan Januari sampai Oktober 2014. Rancangan percobaan yang digunakan adalah rancangan acak kelompok (RAK) pola faktorial dengan empat ulangan. Faktor pertama adalah dosis pupuk Boron (B0 = tanpa pupuk Boron, B1 = 5 kg/ha, B2 = 10 kg/ha, B3 = 15 kg/ha, B4 = 20 kg/ha, B5 = 25 kg/ha). Faktor kedua adalah teknik penanaman (N1 = tanpa naungan, N2 = menggunakan naungan). Hasil penelitian menunjukkan bahwa pemberian Boron 15 kg/ha dapat meningkatkan jumlah cabang, jumlah polong, jumlah dan bobot benih per tanaman, serta persentase benih tumbuh per tanaman pada perbenihan kubis bunga. Pemakaian naungan dapat meningkatkan jumlah tangkai, jumlah polong, jumlah dan bobot benih per tanaman pada perbenihan kubis bunga.</p><p>Cauliflower is a nutritious vegetable that highly demanded by consumers. The yield of cauliflower is very much effected by the seedling quality. This justifies the importance of studying how to produce a good quality of cauliflower seedling. The objective of the study was to determine the exact concentration of Boron fertilizer and to identify the most appropriate planting technique in producing cauliflower seedlings. The study was conducted in Berastagi Experimental Garden from January to October 2014. A randomized complete block design (RBD) was used with four replications. The first factor was the dose of Boron fertilizer (B0 = without Boron fertilizer, B1 = 5 kg / ha, B2 = 10 kg / ha, B3 = 15 kg / ha, B4 = 20 kg / ha, B5 = 25 kg/ha). The second factor was planting techniques (N1 = without shade, N2 = with shade). The results suggest that the use of 15 kg/ha Boron increases the number of branches, number of pods, number of seeds and seed weight per plant, as well as percentage of seed emergence per plant. The use of shade also increases the number of branchs, number of pods, number of seeds, and seed weight per plant.</p>


2021 ◽  
Vol 18 (1) ◽  
pp. 1-8

The present research was conducted at the experimental field of Agrotechnology Discipline, Khulna University, Khulna during Rabi season 2016-17 to investigate the growth and yield performance of mustard varieties. The experiment was arranged in a randomized complete block design consisting of eight mustard varieties (viz. BARI Sarisha-8, BARI Sarisha-11, BARI Sarisha-13, BARI Sarisha-14, BARI Sarisha-15, BARI Sarisha-16, Rai and Tori-7) as treatment and replicated thrice. All the growth, yield attributes and yield were substantially influence among the mustard varieties except the phenological parameters. Results of the experiment showed that the highest plant height (131.33 cm), seed yield (1813.33 kg ha-1) and stover yield (3876.67 kg ha-1) were found in BARI Sarisha-16. BARI Sarisha-11 was found better in respect of maximum siliqua plant-1, weight of seeds plant-1, 1000-seed weight and harvest index. Besides this, BARI Sarisha-14 showed the maximum number of seeds siliqua-1. Therefore, findings of this study suggested that BARI Sarisha-16 would be suitable for better productivity and recommended for cultivation in the medium highland of Khulna region of Bangladesh.


2021 ◽  
Vol 13 (2) ◽  
pp. 10795
Author(s):  
Mohammed BABAGANA ◽  
Olamide A. FALUSI ◽  
Aliyu N. ABDULKADIR ◽  
Alhassan MOHAMMED ◽  
Hauwa SHEHU ◽  
...  

Vegetative parameters of eight M3 (third mutant generation) lines of sesame were evaluated under rain fed condition. The seeds of the lines were sown alongside their respective controls using a randomized complete block design. The eight lines were generated from three parental stocks: NCRIBEN-04E (V1), NCRIBEN-01M (V2) and NCRIBEN-03L (V3). The three parental stocks were exposed to different doses of gamma irradiation from cobalt-60 source. 04E-550-G2-3 had the highest plant height (57.40) at the 6th week which was significantly different (P<0.05) from the three checks. 03L-450-G2-2 had the highest petiole length (12.45cm) which was significantly different (P<0.05) from the checks except check three (12.25cm) which was not significantly different (P>0.05). 03L-450-G1-2 had the highest number of leaves (91) and consequently highest number of branches (5.60). Although the number of leaves were significantly different (P<0.05) from Check three (54.60), there was no significant difference (P>0.05) between the number of branches and check three (5.40). The results obtained for vegetative parameters of M3 lines of sesame suggests that some of the genotypes could be used as potential parents for future breeding programmes aimed at improving sesame lines.


2020 ◽  
Vol 38 (1) ◽  
pp. 101-109
Author(s):  
Yuri Mercedes Mena ◽  
Nora Cristina Mesa ◽  
Alexander Escobar ◽  
Santiago Pérez

In order to evaluate the establishment and biological effectivenessof the predators Phytoseiulus persimilis, Neoseiulus californicus and Chrysoperla carnea on populations of Tetranychus urticae, a trial was established at the farm “La Pola” (with a cumulative precipitation of 445.9 mm), located in the municipality of Roldanillo, Valle del Cauca, Colombia. Anexperiment was performed under field conditions between September 2017 and May 2018 and using the papaya hybrid Tainung-1 between the stages of vegetative growth and fruit filling. Four treatments were established: T1: 12 releases of P. persimilis and N. californicus; T2: 10 releases of C. carnea; T3: treatment with no predator releases (control); and T4: grower’s practice (15 applications of pesticides) in a randomized complete block design with three replicates per treatment. Samples were collected every eight days by measuring the following variables: infestation percentage, number of fruits/plant, population of T. urticae, P. persimilis, N. californicus, and C. carnea/leaf and the diameter of the stem (every 30 d). The largest T. urticae populations were found in T3 and the lowest ones in T4. The populations of immature and adult T. urticae did not show significant differences between T1 and T2 but there were significant differences between T3 and T4. The variables diameter of the stem, number of leaves per plant, percentage of infestation, and number of fruits per plant showed significant differences between treatments. The T1 and T2 were equal to T3. T4 had the highest number of leaves and fruits per plant. The released predators did not control the populations of the mite T. urticae under the conditions of the present experiment.


2016 ◽  
Vol 19 (1) ◽  
pp. 11-17
Author(s):  
R Yeasmin ◽  
MA Karim ◽  
MM Haque ◽  
MAB Mia

An investigation was carried out at the experimental field of the Department of Agronomy, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur during September to November 2014 to evaluate the productivity of three mungbean genotypes, viz., GK-24 (G1), GK-63 (G2) and BU mug 4 (G3) under four plant spacing (densities) such as i) 15 cm x 10 cm= 66 plants m-2 (D1), ii) 20 cm x 10 cm= 50 plants m-2 (D2), iii) 25 cm x 10 cm= 40 plants m-2 (D3) and iv) 30 cm x 10 cm=33 plants m-2 (D4). The experiment was conducted in a factorial randomized complete block design with three replications. A wide variation among the genotypes was observed in relation to light transmission, yield, and yield contributing characters. At 30 cm x 10 cm spacing (D4) the highest light transmission ratio (LTR) was observed in G1 genotype (57.92) and the lowest LTR value in G2 genotype (46.92). Among the three genotypes, G1 produced the highest seed yield (1094 kg ha-1). But highest seed number pod-1 was found in D2 (11.61) while maximum pods plant-1 (11.08) was in D4 treatment followed by D3 (10.59). Among the four plant densities, treatment D3 showed the highest 1000-seed weight (50.30 g). The highest seed yield (1114 kg ha-1) was recorded in the treatment D4. Among the interaction, the highest number of seeds pod-1 (12.20) was found in the treatment D1G3, though the highest number of pods plant-1(12.03) was in treatment D4G1 but the1000-seed weight was the highest (51.92 g) in D3G1. The highest seed yield (1230 kg ha-1) was recorded from treatment D4G1. The result showed that GK 24 genotype performed the best in all respects of yield and yield attributes at 30 cm x 10 cm spacing compared to other treatments.Bangladesh Agron. J. 2016, 19(1): 11-17


2000 ◽  
Vol 48 (3) ◽  
pp. 289-293 ◽  
Author(s):  
A. Orak

This research was carried out in the Experimental Field of Tekirda đ Agricultural Faculty. Two common vetch varieties and 5 lines were sown with 150 seeds/m 2 plant density according to a randomised block design. Some important yield related characters such as plant height, number of branches, number of pods per plant, number of seeds per pod, pod width, pod length, 1000 seed weight, fodder and seed yield were examined. The results of variance analysis showed that the effects of genotype, year and their interaction on number of branches and number of pods per plant were all significant. In addition, the effect of year and variety on plant height and seed yield were found to be significant. Moreover, the number of seeds per pod, pod width and pod length were found to be significant in variety and year × variety interaction. There was only a difference between years for 1000 seed weight and fodder yield. According to the results, genotype 283 and Tokat had similar performance to that of commercial cultivars (Ürem, Kubilay). Especially the fodder and seed yield of genotype 283 were found to be higher than those of the cultivars (Ürem, Kubilay).


2021 ◽  
Vol 23 (3) ◽  
pp. 319-323
Author(s):  
D.A. PATEL ◽  

The experimental material comprised of forty eight genotypes consisting of five Mori based CMS lines and seven Mori based fertile lines crossed in line x tester mating design. The resultant thirty five hybrids along with their twelve parents and standard check (GDM 4) were evaluated in randomized block design at Castor-Mustard Research Station, Sardarkrushinagar Dantiwada Agricultural University, Sardarkrushinagar during, rabi 2018-2019. The analysis of variance for combining ability revealed that variance due to gca was significant for all the characters except number of seeds per siliqua, seed yield per plant and 1000 seed weight. Whereas, variance due to sca was significant for all the traits. This indicates significant contribution of hybrids for specific combining ability variance component. The ratio of σ2gca/σ2sca below than unity for days to maturity, siliqua length, number of seeds per siliqua, seed yield per plant, 1000 seed weight and oil content which suggested greater role of non-additive gene action in the inheritance of these traits. Among the parents, female SKM 9928 and Kranti were good general combiner for seed yield per plant, total number of branches per plant and total number of siliquae per plant. Whereas, male parent Mori 'R' 1-18 was good general combiner for seed yield per plant, total number of branches per plant and total number of siliquae per plant. Best three hybrids which possessed significant positive SCA effects for seed yield per plant were SKM 301 x SKM 303, SKM 9928 x Pusa Agrani and Kranti x Mori ‘R’ 1-18.


Author(s):  
T. Raghunandan ◽  
J. P. Collis ◽  
S. Saravanan ◽  
K. S. Barman

The experiment was carried out at Experimental field, Department of Horticulture, Sam Higginbottom Institute of Agriculture Technology and Sciences [formerly known as Allahabad Agriculture Institute Deemed University, AAI-DU] during the Spring season 2014-2015. The experiment consists of Thirteen treatments viz., (T0) Control-RDF (100:120:100 N P K  kg ha-1,), (T1) 75% RDF + AZ@ 2.5 kg ha-1,, (T2) 75% RDF + FYM @ 10 ton ha-1, (T3) 75% RDF + VC@ 10 ton ha-1, (T4) 75% RDF + AZ @ 2.5 kg/ha +FYM @ 10 ton ha-1+VC @ 10 ton ha-1, (T5) 50% RDF +AZ@ 2.5 kg ha-1, (T6) 50% RDF + FYM@ 10 ton ha-1, (T7) 50% RDF + VC@ 10 ton ha-1, (T8) 50% RDF +  AZ @ 2.5 kg ha-1+FYM @ 10 ton ha-1+VC @ 10 ton ha-1, (T9) 25% RDF + AZ@ 2.5 kg ha-1, (T10) 25% RDF + FYM@ 10 ton ha-1, (T11) 25% RDF + VC@ 10 ton ha-1+, (T12) 25% RDF +  AZ @ 2.5 kg ha-1+FYM @ 10 ton ha-1+VC @ 10 ton ha-1. The treatments were replicated thrice in a Randomized Complete Block Design. The results revealed that Plants treated with 75% RDF + AZ @ 2.5 kg/ha +FYM @ 10 t/ha +VC @ 10 t/ha (T4) significantly recorded maximum vegetative and Tuber yield attributes like plant height (91.87 cm), plant spread (92.38 cm), Number of Branches per plant (7.27), number of leaves per plant (26.53), number of tubers per plant (4.80), maximum tuber weight (958.53) and Maximum tuber yield per plant was recorded in T4 (75% RDF + AZ @ 2.5 kg/ha +FYM @ 10 t/ha +VC @ 10 t/ha) (43.33g) followed by T3 (75% RDF + VC @ 10 t/ha) (40.95g).


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