scholarly journals Preliminary Evaluation of Growth Response of Two Cowpea Accessions to Water Stress

2019 ◽  
Vol 39 (04) ◽  
Author(s):  
Rashied Tetteh ◽  
Samuel Kwasi Boateng ◽  
Kwaku Junior Asamoah
Keyword(s):  
Water Stress ◽  
Plant Growth ◽  
Plant Height ◽  
Block Design ◽  
Plant Genetic Resources ◽  
Dry Mass ◽  
Preliminary Evaluation ◽  
Eastern Region ◽  
Number Of Leaves ◽  
Plant Dry Mass

Water deficit is one of the most important factors that affect plant growth and development. To assess the effect of water stress on growth of two cowpea accessions (i.e. UCC 321 and GH 4769), a field study was conducted at the experimental site of CSIR-Plant Genetic Resources Research Institute, Bunso, Eastern Region-Ghana during the minor season. The treatments comprised of non-watered and well-watered cowpea plants for thirty-two days. The experiment was a 2 x 2 factorial replicated three times in a randomised complete block design. Growth was determined by measuring plant height, number of leaves per plant and plant dry mass (i.e. leaf, stem, root and total plant). Water stress reduced plant height, number of leaves and plant dry mass. Dry-mass accumulation in above-ground plant organs was lower in non-watered plants than in the well-watered treatment. This indicated that irrigation was necessary to optimize cowpea production, and that a deficit in irrigation might affect plant growth as soil becomes dry.

scholarly journals Effects of plant growth regulators in heliconia ‘Red Opal’

2016 ◽  
Vol 22 (3) ◽  
pp. 301
Author(s):  
Ana Cecilia Ribeiro de Castro ◽  
Fernando José Hawerroth ◽  
Carlos Alberto Kenji Taniguchi ◽  
Tiago Freitas Silva ◽  
Nazaré Suziane Soares
Keyword(s):  
Leaf Area ◽  
Plant Height ◽  
Growth Regulators ◽  
Growth Regulator ◽  
Block Design ◽  
Dry Mass ◽  
Potted Plants ◽  
Randomized Block Design ◽  
Number Of Leaves ◽  
One Year

The objective of this study was to evaluate growth regulators with purpose of reducing the size of heliconia ‘Red Opal’ potted plants. The experiment was carried out in randomized block design with five treatments (trinexapac-ethyl and paclobutrazol at rates of 37.5 and 75.0 mg of active ingredient per pot and control without growth regulator) and five replicates. The treatments were applied 40 days after planting the rhizomes in pots filled with soil. Thirty and 150 days after the growth regulator application, plant height, number of leaves and shoots, petioles length and leaf area were evaluated. One year after planting the rhizomes in pots the number of inflorescence and leaves (leaves, sheathing leaf bases and inflorescences) and rhizomes (rhizomes and roots) dry mass were determined. Trinexapac-ethyl had no differences compared to the control in any of the variables evaluated. Paclobutrazol proved effective in reducing plant height, leaf area and petiole length and increase in number of leaves and shoots but the effect was temporary. Also, it did not affect the inflorescences production and leaves and rhizomes dry mass. Paclobutrazol is efficient to promote height reduction and to increase the number of shoots in heliconia ‘Red Opal’ potted plants without affect the inflorescence formation but its effects is temporary.

scholarly journals Initial growth of zucchini irrigated with saline water in soil with biofertilizers

2021 ◽  
Vol 15 ◽  
Author(s):  
Juvenaldo Florentino Canjá ◽  
Josimar De Azevedo ◽  
Geocleber Gomes de Sousa ◽  
Clarissa Lima Magalhães ◽  
Thales Vinícius De Araújo Viana
Keyword(s):  
Salt Stress ◽  
Plant Height ◽  
Irrigation Water ◽  
Aerial Part ◽  
Plant Biomass ◽  
Block Design ◽  
Dry Mass ◽  
Stem Diameter ◽  
Initial Growth ◽  
Number Of Leaves

Zucchini culture is slightly sensitive to salinity and is among the ten vegetables of highest economic value, with characteristics of precocity and easy cultivation. These characteristics are some of the reasons for the expansion of its cultivation among small producers. Thus, the objective was to evaluate the effect of different levels of salinity in the irrigation water and biofertilizer types on the initial growth of the zucchini (Cucurbita pepo L.) culture. The experiment was carried out in the full sunlight in a randomized block design, in a 5x2 factorial arrangement. The treatments consisted of a combination of five types of biofertilizers (quail, sheep, mixed, bovine, and crab) and two salinity levels of the irrigation water (0.8 and 2.5 dS m-1), with five replicates. At 30 days after transplanting, the following variables were evaluated: electrical conductivity of the substrate, plant height, number of leaves, roots length, stem diameter, leaf area, chlorophyll content, dry mass of the aerial part, root dry mass, and total dry mass. Salt stress negatively interferes with the accumulation of zucchini plant biomass. Quail, bovine, and sheep biofertilizers are more efficient about plant height, number of leaves, and stem diameter. The sheep biofertilizer attenuates the salt stress for the dry mass of the aerial part, the root, and the total dry mass.

scholarly journals PENGARUH KEMIRINGAN TALANG TERHADAP PERTUMBUHAN DAN HASIL DUA VARIETAS PAKCOY (Brassica rapa L.) DENGAN SISTEM HIDROPONIK NUTRIENT FILM TECHNIQUE

2021 ◽  
Vol 10 (1) ◽  
pp. 96
Author(s):  
Syahtian Suprayogi ◽  
Suprihati Suprihati
Keyword(s):  
Plant Growth ◽  
Dissolved Oxygen ◽  
Plant Height ◽  
Block Design ◽  
Dry Weight ◽  
Growth And Yield ◽  
Fresh Weight ◽  
Crown Diameter ◽  
Central Java ◽  
Number Of Leaves

The slope of the gutter is one of the factors that affect plant growth and yield. This tilt affects the dissolved oxygen content in the hydroponic nutrient flow. Dissolved oxygen is one of the factors that can affect plant growth and yield. This study aims to determine the effect of guttering on the growth and yield of pakcoy plants. The research was conducted in Salatiga, Central Java from March to May 2019 in a greenhouse. Combination treatment of Pakcoy variety with gutter slopes. Each was repeated four times to obtain 24 experimental trials. This study used a randomized block design. The parameters observed were dissolved oxygen, number of leaves, plant height, shoot diameter, plant fresh weight, upper fresh weight, lower fresh weight, upper dry weight, and lower dry weight. Data analysis using variance. The DMRT test was used to see the distance between treatments with a 95% confidence interval. Based on the research results, the combination of varieties and the slope of the gutter had a significant effect on the number of leaves, crown diameter, and plant fresh weight. The combination of green pakcoy varieties with a 12% gutter slope gave the best results including plant height 25.32 cm, number of leaves 18.83, crown diameter 33.36 cm and fresh weight of 161.4 g plant-1. Keywords: NFT, varieties, slope gutters, dissolved oxygen

scholarly journals Emergence Rate and Initial Growth of Longan (Dimocarpus longan Lour) in Relation to Seeds Sizes

2019 ◽  
Vol 11 (5) ◽  
pp. 454
Author(s):  
Fábio Oseias dos Reis Silva ◽  
José Darlan Ramos ◽  
Ranieri Reis Laredo ◽  
Verônica Andrade dos Santos ◽  
Nathalia Vallery Tostes ◽  
...  
Keyword(s):  
Plant Height ◽  
Block Design ◽  
Seedling Emergence ◽  
Dry Mass ◽  
Stem Diameter ◽  
Initial Growth ◽  
Large Size ◽  
Randomized Block Design ◽  
Number Of Leaves ◽  
Shoot Mass

The fruit plant ‘Longan’ is considered as being native to Asia and is at present commercially explored in some regions. The objective of this work was to study the influence of seed size on seed emergence and initial seedling growth. The experiment was carried out using a randomized block design (DBC), with three treatments, namely, the seed sizes at seedling emergence according to their longitudinal diameter: small, medium and large. Each plot was composed of six seeds and five replications per treatment. The following characteristics were evaluated: emergence speed index, average time, percentage and relative frequency of emergence, leaf number, stem diameter, plant height, shoot dry mass and root dry mass. Seeds of medium and large size are those that presented satisfactory results for the characteristics related to seed emergence. The same ones stood out in relation to the small seeds for the variables percentage, average time, average speed and emergence speed index. Small seeds are not recommended for the production of ‘Longan’ seedlings, given the long period of time to emerge and the low probability of the seedlings establishing satisfactorily in the field. The medium and large seeds were the most promising for the variables number of leaves, stem diameter, plant height, dry shoot mass and dry root mass.Therefore, according to the conditions in which the present work was conducted, the use of medium and large seeds for the production of ‘Longan’ seedlings is suggested.

scholarly journals Identifikasi Pengaruh Dosis Pemupukan Trichokompos terhadap Fase Awal Pertumbuhan Tanaman Jagung Ungu Antioksidan (Identification of the Trichocompost Fertilizer Dose Effect on the Early Growth of Purple Corn Anthocyanins)

JURNAL PANGAN ◽  
2021 ◽  
Vol 29 (3) ◽  
pp. 191-196
Author(s):  
Andi Ayu Nurnawati
Keyword(s):  
Plant Growth ◽  
Leaf Area ◽  
Plant Height ◽  
Block Design ◽  
Early Growth ◽  
Dose Effect ◽  
Randomized Block Design ◽  
Number Of Leaves ◽  
Purple Corn ◽  
Corn Plants

ABSTRAK Jagung ungu merupakan salah satu dari beberapa varian warna jagung pulut yang belum begitu dikenal oleh masyarakat namun kaya akan manfaat. Penilitian ini bertujuan untuk mengetahui pengaruh dosis pupuk trichokompos terhadap variabel pengamatan diantaranya persentase tumbuh tanaman, tinggi tanaman, jumlah daun dan luas daun pada fase awal pertumbuhan tanaman jagung ungu. Persentase tumbuh tanaman diamati pada 7 hari setelah tanam kemudian tinggi tanaman, jumlah daun dan luas daun diamati pada 14 hari setelah tanam. Metode penelitian menggunakan Rancangan Acak Kelompok dengan 5 perlakuan dosis pupuk trichokompos (0 ton/ha, 20 ton/ha, 25 ton/ha, 30 ton/ha dan 35 ton/ha) yang diulang sebanyak 5 kali. Analisis data menggunakan sidik ragam dan dilanjutkan dengan uji BNJ (Uji Lanjut Tukey), apabila diperoleh hasil yang berpengaruh beda nyata pada perlakuan yang diujikan. Hasil penelitian menunjukkan bahwa perlakuan dosis pupuk trichokompos berpengaruh nyata pada variabel pengamatan jumlah daun di mana dosis pupuk trichokompos 25 ton/ha menunjukkan nilai tertinggi. kata kunci: jagung ungu, trichokompos, pertumbuhan awal ABSTRACT Purple corn is one of several colour variants of pulut corn that is not well known by the public but it has many benefits. This study was aimed to determine the effect of trichocompost fertilizer dosage on the observed variables, that were the percentage of plant growth, plant height, number of leaves, and leaf area in the early stages of purple corn plants' growth. Percentage of plant growth at 7 days after planting then plant height, number of leaves and leaf area were observed at 14 days after planting. The research method used a randomized block design with 5 doses of trichocompost fertilizer (0 tons/ha, 20 tons/ha, 25 tons/ha, 30 tons/ha, and 35 tons/ha) with five replications. The results showed that the dosage treatment of trichocompost had a significant effect (p<0.05) on the number of leaves where the trichocompost fertilizer dose of 25 tons/ha  showed the highest one. keywords: purple corn, trichocompost, early growth.

scholarly journals PENGARUH PUPUK KISERIT TERHADAP PERTUMBUHAN KELAPA SAWIT DAN PRODUKTIVITAS TANAH

2020 ◽  
Vol 17 (4) ◽  
pp. 133
Author(s):  
A. KASNO ◽  
NURJAYA NURJAYA
Keyword(s):  
Plant Growth ◽  
Plant Height ◽  
Oil Palm ◽  
Elaeis Guineensis ◽  
Block Design ◽  
Dry Weight ◽  
Soil Productivity ◽  
Number Of Leaves ◽  
Mg Content ◽  
Leaf Midrib

<p>ABSTRAK</p><p>Perluasan lahan perkebunan kelapa sawit lebih diarahkan padalahan-lahan di luar Pulau Jawa. Lahan yang tersedia bersifat marginalseperti pada tanah Ultisols dan Oxisols. Pada lahan tanah tersebut telahmengalami pencucian yang hebat karena curah hujan yang tinggi sehinggakadar hara Mg rendah. Sumber hara Mg yang banyak digunakan adalahpupuk kiserit (Mg dan S), dolomit (Ca dan Mg) dan pupuk majemuk.Penelitian bertujuan untuk mempelajari peranan pupuk kiserit terhadappertumbuhan dan produktivitas tanah. Penelitian dilakukan di kebunpembibitan Cimulang, Kabupaten Bogor (PTP. Nusantara VIII), padaFebruari – Desember 2005. Tanah yang digunakan untuk penelitian adalahUltisols dan Oxisols. Rancangan menggunakan acak kelompok, 5perlakuan, ulangan 9 kali. Satu perlakuan terdiri dari satu tanaman bibitkelapa sawit. Pupuk Mg yang digunakan adalah kiserit powder 2 Pandadan kiserit yang telah beredar di pasaran sebagai standar. Dosis pupukkiserit yang dicoba: 0; 0,5; 1,0; dan 1,5 g/tanaman. Pupuk kiserit danpupuk dasar diberikan setiap 2 minggu sekali atau 12 kali pemberian.Pemupukan pertama diberikan pada umur 1 minggu, mulai pemupukan ke-2 dosis pupuk dikalikan 2, mulai minggu ke 10 dosis pupuk dikalikan 3,dan mulai minggu ke-18 dosis pupuk dikalikan 4. Contoh tanah bulk darilapang dikeringanginkan, diayak dengan saringan 2 mm, ditimbang 20 kgdan dimasukkan ke dalam polybag. Hasil penelitian menunjukkan bahwapemupukan kiserit pada Ultisols dapat meningkatkan tinggi, jumlah daun,diameter batang, bobot kering tanaman bibit kelapa sawit, serta mening-katkan hara Mg dalam tanah dari 1,25 menjadi 3,04 me/100 g dan kadarMg dalam tanaman menjadi 0,31 g/100 g. Pemupukan kiserit pada Oxisolsmeningkatkan tinggi, jumlah daun, diameter batang, bobot kering tanamanbibit kelapa sawit, serta meningkatkan hara Mg dalam tanah dari 0,28menjadi 2,36 me/100 g dan kadar Mg dalam tanaman menjadi 0,34 g/100g.Dosis optimum pupuk kiserit pada Ultisols dan Oxisols sama yaitu 0,80 g/tanaman. Pengaruh pupuk kiserit terhadap pertumbuhan bibit kelapa sawitdan produktivitas tanah sama dengan kiserit yang telah beredar di pasaransebagai standar.</p><p>Kata kunci: Elaeis guineensis, pupuk kiserit, status hara Mg, pertumbuhantanaman, produktivitas tanah</p><p>ABSTRACT</p><p>The Effect of Kieserite Fertilizer to Oil Palm Growth andSoil Productivity</p><p>The expansion of oil palm plantation is driven to outside JavaIsland. The available lands are marginal such as Ultisols and Oxisols,where intensive bleaching occurs for the high rate of rainfall, and causesthe low content of magnesium in such land. There are three sources used toprovide the Mg nutrient, such as kieserite (Mg and S), dolomite (Ca andMg) and compound fertilizer. The objective of this experiment was tostudy the effect of kieserite fertilizer on plant growth and soil productivity.This research was conducted in the seedling plot of Cimulang Site, BogorDistrict (PTP. Nusantara VIII) in February- December 2005 on Ultisolsand Oxisols using a randomized complete block design with 5 treatmentsand 9 replicates. One oil palm seedling was planted in each treatment. Thisexperiment used kieserite powder 2 Panda to provide Mg and ordinaryKieserite as the standard. The kieserite dosages were 0, 0.5, 1.0, and 1.5g/plant. Fertilizing the plot was done every 2 weeks, using kieserite andbasic fertilizer or fertilizing 12 times, but the first fertilization was donewhen the plants reached 1 week of age. Starting on the second fertilization,the dosage was multiplied 2 times, and starting on the 10 th week, thedosage was multiplied 3 times, and starting on 18 th week the dosage offertilizing is multiplied 4 times. Bulk soil samples were air-dried, sievedpassing 2 mm siever, and put 20 kg into polybags. The research resultshowed that kieserite fertilization on Ultisols increased plant height,number of leaves, stems (leaf midrib) diameter, dry weight of biomass, Mgnutrient content in the soil (from 1.25 to 3.04 me/100 g), and alsoincreased the plant Mg content to become 0.31 g/100 g. In addition,kieserite fertilization on Oxisols increased plant height, number of leaves,stems (leaf midrib) diameter, plant dry weight of oil palm seedling, Mgnutrient content in the soil, (from 0.28 into 2.38 me/100 g), and increasedplant Mg content into 0.34 g/100 g. The optimum kieserite fertilizingdosage on Ultisols and Oxisols was just the same, i.e. 0.80 g/plant. Theeffect of these two kinds of kieserite to the plant growth and soilproductivity was just almost the same.</p><p>Key words: Elaeis guineensis, kieserite fertilizer, Mg nutrient status, plantgrowth, soil productivity</p>

scholarly journals Irrigation levels and use of hydro retainer polymer in greenhouse lettuce production

2019 ◽  
Vol 23 (6) ◽  
pp. 406-412
Author(s):  
Welcio R. da Silva ◽  
Leandro C. Salomão ◽  
Débora R. M. Pereira ◽  
Henrique F. E. de Oliveira ◽  
Alexandre I. de A. Pereira ◽  
...  
Keyword(s):  
Plant Height ◽  
Aerial Part ◽  
Block Design ◽  
Dry Mass ◽  
Randomized Block Design ◽  
Number Of Leaves ◽  
Four Blocks ◽  
Irrigation Levels ◽  
Hydrogel Polymer ◽  
Part Plant

ABSTRACT One of the potential alternatives to improve the use of water resources is the use of hydro retainer polymer applied to the soil. The objective of this study was to evaluate how irrigation levels and doses of hydro retainer polymer interfere in the production of ’Vanda’ lettuce. The experiment was carried out from December 2017 to January 2018 under protected environment in the Instituto Federal Goiano, Urutaí Campus, Goiás State, GO, Brazil (17º 29’ 10” S of latitude, 48º 12’ 38” W of longitude and 697 m of altitude). The work tested four irrigation levels of 50, 75, 100 and 125% of the evaporation obtained daily by the hook micrometer and five doses of hydrogel polymer (0, 50, 100, 150 and 200 g plant-1). The experimental design was a randomized block design in a scheme of split-plot and four blocks. Canopy fresh and dry mass, plant height, number of leaves and productivity were evaluated. There was 29.24% increase in the dry mass comparing the hydro retainer polymer doses of 0 and 169.28 g and an increase of 14.36% of the height of plants when compared with the irrigation levels of 50 and 125%. The use of a hydro retainer polymer provided a significant increase in all the evaluated productive variables. The irrigation levels influence the fresh mass from aerial part, plant height and productivity. The productivity increased 18.42% for the irrigation levels used and the highest estimated values were presented in the dose of 157.49 g (14.46 t ha-1) hydro retainer polymer.

scholarly journals Effect of gibberellic acid and the biostimulant stimulate® on the initial growth of tamarind

2012 ◽  
Vol 34 (1) ◽  
pp. 8-14 ◽  
Author(s):  
Ana Cristina Vello Loyola Dantas ◽  
João Mariano de Oliveira Queiroz ◽  
Elvis Lima Vieira ◽  
Vanessa de Oliveira Almeida
Keyword(s):  
Aqueous Solution ◽  
Plant Growth ◽  
Gibberellic Acid ◽  
Plant Height ◽  
Root Length ◽  
Block Design ◽  
Dry Mass ◽  
Stem Diameter ◽  
Initial Growth ◽  
Randomized Block Design

Plant growth regulators and biostimulants have been used as an agronomic technique to optimize the production of seedlings in various crops. This study aimed to evaluate the influence of gibberellic acid and the biostimulant Stimulate® on the initial growth of tamarind (Tamarindus indica L.). The experiments were conducted in a nursery with 50% shading, in a randomized block design with five replications and five plants per plot. Thirty eight days after sowing, the leaves were sprayed seven times a day with 0.0 (control), 0.8, 1.6, 2.4 and 3.2 mL of gibberellic acid L-1 aqueous solution and with 0.0 (control), 6.0,12.0, 18.0, and 24.0 mL Stimulate® L-1 aqueous solution. Stem diameter (SD), plant height (PH), longest root length (LRL), shoot dry mass (SDM), root dry mass (RDM) and RDM:SDM ratio were evaluated ninety days after sowing. Variance and regression analysis showed that GA3 at 4% promoted plant growth (height), but had no significant effect on stem diameter, longest root length, shoot and root dry mass and the RDM:SDM ratio. On the other hand, all concentrations of Stimulate® significantly increased plant height and shoot and root dry mass of tamarind seedlings.

PENGARUH KOMPOS SAMPAH KOTA DAN PUPUK KANDANG SAPI TERHADAP PERTUMBUHAN DAN HASIL TANAMAN PAKCOY (BRASSICA RAPA, L. CHINENSIS) PADA ALUVIAL KABUPATEN INDRAMAYU

2018 ◽  
Vol 9 (2) ◽  
pp. 153-163
Author(s):  
Wiwik Ambarsari ◽  
Henly Yuliana
Keyword(s):  
Plant Height ◽  
Brassica Rapa ◽  
Block Design ◽  
Cattle Manure ◽  
Growth And Yield ◽  
Randomized Block Design ◽  
Two Factors ◽  
Number Of Leaves ◽  
Experimental Garden

The study aimed to determine the effect of the combination of city waste compost and cattle manure on the growth and yield of pakcoy plants (Brassica rapa, L. Chinensis) in Aluvial, Indramayu Regency. The study was conducted at the Experimental Garden of the Faculty of Agriculture, Wiralodra University, Indramayu Regency from March to August 2018. This study used Factorial Pattern Randomized Block Design with two factors. The first factor is city waste compost and the second factor is cattle manure with 4 levels: 0%, 3.0%, 6.0%, and 9.0%, repeated twice. The results showed that there was an independent influence between city waste compost and cattle manure on plant height and number of leaves. The best combination to increase the feasibility weight of pakcoy consumption is by giving city waste compost 9.0% (S4) and cattle manure 6.0% (K3).

scholarly journals Effect of plant regulators on growth and flowering of 'Meyer' zoysiagrass

2013 ◽  
Vol 31 (3) ◽  
pp. 695-703 ◽  
Author(s):  
S.R. Marchi ◽  
D. Martins ◽  
N.V. Costa ◽  
J.R.V. Silva
Keyword(s):  
Plant Height ◽  
Mass Production ◽  
Untreated Control ◽  
Block Design ◽  
Dry Mass ◽  
Zoysia Japonica ◽  
Visual Effects ◽  
Visual Symptoms ◽  
Randomized Complete Block Design ◽  
Prohexadione Calcium

This trial aimed to evaluate the effect of sequential applications of different plant regulators over growth and flower rachis emission of 'Meyer' zoysiagrass (Zoysia japonica). The study was conducted on 15-month old green turfgrass under a randomized complete block design with four replications. The following plant regulator and doses were tested: trinexapac-ethyl (113+113, 226+113, 226+226, 452+113, 452+226, 452+452, 678+339 e 904+452 g a.i./ha-1), prohexadione-calcium (100+100 e 200+200 g a.i. ha-1) and bispyribac-sodium (40+40 e 60+60 g a.i. ha-1), as well as an untreated control. The turfgrass was mowed again at 3.0 cm aboveground and the second plant regulator was applied when 'Meyer' zoysiagrass was between 5.0 and 6.0 cm high. The effect of the treatments was visually rated for visual injury, plant height, height and number of flower rachis, and total dry mass production of clippings. Only bispyribac-sodium had visual symptoms of injury on 'Meyer' zoysiagrass, and no intoxication was observed at 28 days after the second application (DAAB). The sequential applications of trinexapac-ethyl, prohexadione-calcium and bispyribac-sodium reduced by more than 80% the total clipping dry mass produced by 'Meyer' zoysiagrass. All the plant regulators tested also showed promising results in reducing the height and emission of rachis, especially when trinexapac-ethyl was applied at the doses 452+452, 678+339 and 904+452 g a.i. ha-1. 'Meyer' zoysiagrass turfgrass can be handled with the sequential application of a plant regulator, which reduces the need for mowing over a period up to 110 days after the application of the second plant regulator, and it also avoids deleterious visual effects over turfgrass.

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