The Influence of Drought on Growth and Gas Exchange in Fraxinus species

HortScience ◽  
1998 ◽  
Vol 33 (3) ◽  
pp. 539c-539
Author(s):  
R.E. Schutzki ◽  
R.T. Fernandez
Keyword(s):  
Shoot Growth ◽  
Dry Weight ◽  
Green Ash ◽  
Leaf Photosynthesis ◽  
Active Growth ◽  
Leaf Emergence ◽  
Randomized Design ◽  
Bud Set ◽  
Terminal Bud ◽  
Completely Randomized Design

Fraxinus americana, F. pennsylvanica, and F. nigra were subjected to short-term drought of 4, 8, and 16 days. Seedlings were obtained from a commerical nursery and grown in 4:1 pine bark:sand media for 3 months prior to the onset of the stress. Seventy-two trees with six replicates per stress treatment were arranged in a completely randomized design. Following each stress period, the appropriate trees were well watering and monitored through recovery. Leaf photosynthesis, shoot growth, leaf emergence, terminal bud set, trunk caliper and soil moisture content were measured through the stress and recovery periods. Drought suppressed shoot growth and leaf emergence in all species; however, Green Ash maintain active growth at higher rates than either White or Black. Leaf photosynthesis was reduced in both White and Black following 4 days of drought whereas Green ash was not adversely effected until day 10. Trees were harvested following recovery and dry weight fractions of leaves, stems, and roots recorded.

scholarly journals Shading and DCPTA Interactively Influence Shoot Growth of Hypoestes

HortScience ◽  
1995 ◽  
Vol 30 (4) ◽  
pp. 854D-854
Author(s):  
Sven E. Svenson
Keyword(s):  
Shoot Growth ◽  
Seedling Emergence ◽  
Tween 80 ◽  
Dry Weight ◽  
Distilled Water ◽  
Seedling Height ◽  
Shoot Dry Weight ◽  
Randomized Design ◽  
Completely Randomized Design ◽  
Shoot Weight

The objective of this study was to determine if shading and DCPTA application interactively influence seedling emergence and shoot growth of Hypoestes phyllostachya Bak. seedlings. Hypoestes `Carmine Red' seeds were soaked for 6 h in distilled water, and then soaked 6 h in solutions containing' 10 mg DCPTA/liter (30 mM) and 0.1% Tween-80, 0.1% Tween-80, or distilled water. Date of seedling emergence was recorded after sowing (0.5 cm) in 9-cm (460 ml) pots filled with 440 ml of a 5 pine bark: 4 Florida sedge peat: 1 sand medium. Forty pots from each of the three seed-soak treatments were grown under 30%, 63%, or 84% shading, provided by saran-type shadecloth, using natural photoperiods (completely randomized design). Shoot heights and dry weights were recorded 75 days after sowing. Neither shading nor DCPTA influenced total seedling emergence or seedling emergence rate (time to 50% emergence). Under 30% shading, seedlings from DCPTA-treated seeds were taller and had more shoot dry weight than seedlings from surfactant- or water-treated-seeds; however, DCPTA did not influence seedling height or shoot weight under 63% or 84% shading.

scholarly journals RESPON PERTUMBUHAN STEK BATANG VANILI (Vanilla planifolia) TERHADAP LAMA PERENDAMAN ZAT PENGATUR TUMBUH ROOT MOST

AGRICA ◽  
2019 ◽  
Vol 12 (1) ◽  
pp. 43-58
Author(s):  
Wilhelmus Haman ◽  
Kristono Yohanes Fowo
Keyword(s):  
Root Growth ◽  
Root Length ◽  
Shoot Growth ◽  
Dry Weight ◽  
Shoot Length ◽  
Stem Cuttings ◽  
Soaking Time ◽  
Randomized Design ◽  
Wet Weight ◽  
Completely Randomized Design

This study aims to determine the response of the immersion time of vanilla stem cuttings in the most root growth regulating agent and to know the length of soaking time of the vanilla stem cuttings in the most optimum root growth regulator. The design used in this study was a Completely Randomized Design (CRD) with six treatments soaking in minutes. Repeated four times, namely P1 (10 minutes), P2 (20 minutes), P3 (30 minutes), P4 (40 minutes), P5 (50 minutes), P6 (60 minutes). Variables observed including the number of days of first shoot growth, the number of roots, root length, shoot diameter, shoot length, wet weight of cuttings, and dry weight of cuttings.The results showed that the treatment of P6 gave a very significant effect. On the variable growth in the number of roots (55.59%), root length (58.86%), number of days of first shoot growth (28 HST), shoot diameter (70.15%) , shoot length (71.43%), wet weight of cuttings (37.14%) and dry weight of cuttings (65.04%) at each age of observation.

Effect of planting date and density on calendula and peppermint herbs

2014 ◽  
Vol 1 (1) ◽  
pp. 25-29
Author(s):  
Rahim Mohammadian ◽  
Behnam Tahmasebpour ◽  
Peyvand Samimifar
Keyword(s):  
Mutual Effect ◽  
Dry Weight ◽  
Planting Date ◽  
Mass Reduction ◽  
Flower Number ◽  
Planting Dates ◽  
Randomized Design ◽  
Significant Difference ◽  
Completely Randomized Design ◽  
Total Maximum

A factorial experiment was conducted with a completely randomized design to evaluate the effects of planting date and density on calendula herbs and peppermint. It had 3 replicates and was done in Khosroshahr research farm, Tabriz in 2006. Under studied factors were: 3 planting dates (10 May, 25 May and 10 June) in 4 densities (25, 35, 45, 55) of the plant in square meters. The results of variance a nalysis showed that there was 1% probability significant difference between the effects of planting date and bush density on the leave number, bush height and the bush dry weight. But the mutual effect of the plant date in mentioned traits density was insignificant. Regarding the traits mean comparison, the total maximum dry weight was about the 55 bush density in mm. Also, the bush high density in mm causes the bush growth and its mass reduction. When there is the density grain, the flower number will increase due to bush grain in surface unit. Overall, we can conclude that 10 June planting and 45 bush density in mm is the most suitable items and results in favored production with high essence for these crops.

Respon Akar Bibit Aren Genjah (Arenga pinnata) Di Pembibitan Pada Pemberian Dosis dan Interval Pupuk Organik Cair Nasa

2018 ◽  
Vol 7 (1) ◽  
pp. 28
Author(s):  
Yetti Elidar
Keyword(s):  
Organic Fertilizer ◽  
Dry Weight ◽  
Treatment Combination ◽  
Root Dry Weight ◽  
Randomized Design ◽  
Dose Study ◽  
Palm Sugar ◽  
Wet Weight ◽  
Completely Randomized Design ◽  
Leaf Dry Weight

Research on the response of roots of palm sugar palm seeds (Arenga pinnata) in nurseries at doses and intervals of Nasa liquid organic fertilizer. Aims to determine the dosage, interval and combination of dosages and fertilization intervals with Nasa liquid organic fertilizer which can provide the best dry weight of the roots in the nursery. The research design used was a Completely Randomized Design (CRD) with 3x3 factorial experiments and each treatment was repeated 8 (eight) times, consisting of: the first factor was the treatment of POC Nasa dose in a concentration of 3 cc POC Nasa per liter of water (D) consists of 3 levels, namely: d1 = 300 ml POC Nasa, d2 = 400 ml POC Nasa, d3 = 500 ml POC Nasa, while the second factor is the treatment of POC Nasa Interval (I) consisting of 3 levels, namely: i1 = 2 once a week, i2 = once every 3 weeks, i3 = once every 4 weeks. The results of the POC Nasa dose study had a significant effect on leaf wet weight, leaf dry weight, root wet weight and root dry weight. The best dose at this level are: d2 (400 ml of Nasa liquid organic fertilizer), the interval of liquid organic fertilizer Nasa has a significant effect on leaf wet weight, leaf dry weight, root wet weight and root dry weight. The best dose at this level is: i1 (once every 2 weeks). The treatment combination has no significant effect on all parameters. 

scholarly journals Perlakuan Berbagai Dosis Pupuk ZA Pertumbuhan Dan Hasil Tanaman Bayam Merah (Amaranthus gangeticus)

2021 ◽  
Vol 5 (2) ◽  
pp. 180
Author(s):  
Edy Kustiani ◽  
Mariyono Mariyono ◽  
Bela Citra Ayuningtyas
Keyword(s):  
Analysis Of Variance ◽  
Nutritional Value ◽  
Environmental Design ◽  
Dry Weight ◽  
Growth And Yield ◽  
Dose Treatment ◽  
Randomized Design ◽  
Number Of Leaves ◽  
Completely Randomized Design ◽  
The Ideal

Red spinach (Amaranthus gangeticus) is one of the most popular vegetables because of its high nutritional value and easy cultivation. Efforts to increase the production of red spinach are to fertilize to meet the needs of both macro and micronutrients. This study aimed to determine the effect of ZA fertilizer dose on the growth and yield of red spinach. The environmental design used was a non-factorial, completely randomized design with four replications. The factors tested were the dose of ZA fertilizer which consisted of 6 levels, namely: without ZA fertilizer (D0); 0.4 gr/polybag (D1); 0.8 gr/polybag (D2); 1.2 gr/polybag (D3); 1.6 gr/polybag (D4); 2 gr/polybag (D5). The data obtained were analyzed using analysis of variance, and if the results were significantly different, the BNT test was continued at a 5% level. The growth and yield of red spinach showed significant differences due to the ZA fertilizer dose treatment. The ZA fertilizer dose treatment of 1.2 g/polybag (D3) resulted in the highest plant height, the number of leaves, and leaf area of red spinach at 14, 21, and 28 days after planting. The ZA fertilizer dose treatment of 1.2 g/polybag (D3) resulted in the highest wet and dry weight plants of 49.15 and 4.38 grams, respectively. The ZA 1.2 gr/polybag dose is the ideal dose to increase the productivity of red spinach.Bayam merah (Amaranthus gangeticus) termasuk sayuran penting yang disukai masyarakat karena bernilai gizi tinggi dan mudah pembudidayaannya. Upaya peningkatan hasil bayam merah salah satunya dengan pemupukan untuk menambah nutrisi yang dibutuhkan tanaman. Tujuan dari penelitian ini adalah mempelajari respon pertumbuhan dan hasil tanaman bayam merah pada perlakuan dosis pupuk ZA. Pelaksanaan penelitian ini menggunakan Rancangan Acak Lengkap (RAL) satu faktor. Faktor yang diujikan adalah dosis pupuk ZA, terdiri 6 taraf, yaitu: tanpa pupuk ZA (D0); 0.4 gr/polybag (D1); 0.8 gr/polybag (D2); 1.2 gr/polybag (D3); 1.6 gr/polybag (D4); 2 gr /polybag (D5). Percobaan dilakukan dengan ulangan sebanyak 4 kali. Analisis data menggunakan analysis of variance (ANOVA), apabila berbeda nyata dilanjutkan uji Beda Nyata Terkecil (BNT) taraf 5%. Perlakuan dosis pupuk ZA berpengaruh nyata terhadap pertumbuhan dan hasil tanaman bayam merah. Perlakuan dosis pupuk ZA 1.2 gr/polybag (D3) menghasilkan tinggi, jumlah dan luas daun tanaman bayam merah tertinggi pada pengamatan umur 14, 21, dan 28 HST. Dosis pupuk ZA 1.2 gr/polybag (D3) juga menunjukkan berat basah dan berat kering tanaman tertinggi sebesar 49.15 dan 4.38 gram. Dosis ZA 1.2 gr/polybag merupakan dosis ideal untuk meningkatkan produktivitas tanaman bayam merah.

scholarly journals Germination test of Eucalyptus phaeotricha seeds

2018 ◽  
Vol 22 (9) ◽  
pp. 653-657 ◽  
Author(s):  
Carlos E. Affonso ◽  
Givanildo Z. da Silva ◽  
Tatiane S. Jeromini ◽  
Cibele C. Martins
Keyword(s):  
Dry Weight ◽  
Water Volume ◽  
Conduction Time ◽  
Germination Test ◽  
Randomized Design ◽  
Temperature Regimes ◽  
Seed Analysis ◽  
Completely Randomized Design ◽  
Mean Time ◽  
Temperature Conduction

ABSTRACT The rules for seed analysis do not have recommendations for conducting the germination test of Eucalyptus phaeotricha seeds. Thus, the aim of this study was to determine the best substrate, temperature, conduction time, and substrate moistening level for the germination test of E. phaeotricha seeds. First count of germination, germination, germination speed index and mean time of germination were evaluated. The first experiment was carried out in a completely randomized design, in a factorial scheme (6 x 2), corresponding to six temperature regimes (15, 20, 25, 30, 35 °C and 20-30 °C) and two substrates (paper and sand) with four replicates, and the means were compared by Tukey test at 0.05 probability level. In the second experiment, the germination test was installed with the most favorable substrate and temperature identified in the previous step, evaluating substrate moistening levels equivalent to 1.0, 1.5, 2.0, 2.5 and 3.0 times the dry weight of the substrate; due to the quantitative nature of the treatments, the data were subjected to regression analysis and curve fitting. The germination test of E. phaeotricha seeds should be conducted at 30 °C on paper, moistened with a water volume of 2.2 times the dry weight of the paper, with initial and final counts at 6 and 14 days after sowing, respectively.

scholarly journals THE GROWTH OF KIWI SHOOT (ACTINIDIA DELICIOSA) ON VARIOUS KINDS OF GELLING AGENTS

2019 ◽  
Vol 5 (2) ◽  
pp. 67
Author(s):  
Mardiana Mardiana ◽  
Zainuddin Zainuddin ◽  
Mahfudz Mahfudz ◽  
Hawalina Hawalina
Keyword(s):  
Shoot Growth ◽  
Good Condition ◽  
Kiwi Fruit ◽  
Physiological Maturity ◽  
Randomized Design ◽  
Number Of Leaves ◽  
Completely Randomized Design ◽  
Time Required ◽  
Number Of Shoots

Kiwi fruit takes about 25 weeks from flower bloom until it reaches physiological maturity, so the time required to produce kiwi seeds from seeds in large quantities and uniform is very long. Tissue culture is one method that can be used to obtain a lot of kiwi seeds and uniforms with large quantities in a faster time. The purpose of this study was to examine various types of media compaction materials for the growth of kiwi shoots in vitro. This study was prepared based on Completely Randomized Design (RAL) with 5 treatments and repeated 4 times so that there were 20 experimental units, each experiment using 2 explants so that there are 40 eksplan. The treatments were: MA 1: Agar Swallow Globe 8 g / l, MA 2: Agar Swallow Globe 4 g / l + Agar Nutrijell 4 g / l, MA 3: Agar Swallow Globe 4 g / l + Agar Nutrijell 5 g / l, MA 4: Phytagel 2.2 g / l, MA 5: Agar Nutrijell 11 g / l. Observation variables are When shoots appear, Number of shoots, number of leaves, Number of Roots, number of root hair. The results showed Swallow Globe 4 g / l + Agar Nutrijell 4 g / l treatment gave the highest average number of shoots, the highest number of leaves and roots, this proved that the combination of Swallow Globe and Nutrijell agar gave a good condition for shoot growth kiwi plant.t.

scholarly journals PENGARUH INTENSITAS PEMOTONGAN TERHADAP PRODUKTIVITAS Indigofera zollingeriana

ZOOTEC ◽  
2020 ◽  
Vol 40 (2) ◽  
pp. 665
Author(s):  
Ivan H.G.M. Wagiu ◽  
Ch.L. Kaunang ◽  
M.M. Telleng ◽  
W.B Kaunang
Keyword(s):  
Dry Weight ◽  
Randomized Design ◽  
Optimal Productivity ◽  
Indigofera Zollingeriana ◽  
Completely Randomized Design ◽  
The Difference ◽  
Cutting Intensity

THE EFFECT OF DEFOLIATION INTENSITY ON PRODUCTIVITY OF Indigofera zollingeriana. This research aims to know the effect of defoliaion intensity on productivity (fresh production, dry weight production, proportion of leaves and stems) and to know the defoliation intensity with optimal productivity of forage Indigofera zollingeriana. This research was conducted in December 2019 until March 2020. It consisted of defoliation intensity at 75cm (T75), 100cm (T100), 125cm (T125), and 150cm (T150). The design used in this experiment is Completely Randomized Design. The variables in this research were 1. fresh production leaves and stems; 2. dry weight production leaves and stems; 3. the proportion of leaves and stems dry weight production of forages Indigofera zollingeriana. The results showed that the difference of intensity defoliation had a significantly effect (P<0,01) on productivity (fresh production, dry weight production, proportion of leaves and stems) forage Indigofera zollingeriana. Defoliation intensity 75 cm have significantly (P<0,01) fresh and dry weight leaf of Indigofera zollingeriana than hight defoliation 125 cm and 150 cm. Intensity defoliation 125 cm have significantly (P<0,01) leaf-stem ratio of Indigofera zollingeriana than any other. It conclude that intensity defoliation 125 cm have highly productivity.   Keywords: Indigofera zollingeriana, cutting intensity, productivity

scholarly journals Pengaruh Campuran Pasir dan Serat Aren pada Kailan (Brassica oleraceae) dengan Hidroponik Substrat

2014 ◽  
Vol 16 (1) ◽  
pp. 19
Author(s):  
Samanhudi Samanhudi ◽  
Dwi Hardjoko ◽  
Riandy Adhitya
Keyword(s):  
Wood Fiber ◽  
Dry Weight ◽  
Fresh Weight ◽  
Randomized Design ◽  
The Media ◽  
Number Of Leaves ◽  
Completely Randomized Design ◽  
Brassica Oleraceae ◽  
Media Mix ◽  
Leaf Greenness

<p>Wood fiber waste of arenga produced from starch palm industry. It is not handled properly so that could be potentially cause problems for the surrounding community. Wood fiber waste of arenga is potentially used as a medium for hydroponics. The waste can be utilized to get a new composition of hydroponic media. This study aims to determine the effect of a mixture of sand with arenga fiber waste. This research was carried out by using a mixture of sand and arenga wood fiber waste as a medium. This is an experimental study using a completely randomized design. This study aims to determine the effect of a mixture of sand and arenga fiber waste for kailan growth. The results showed that the mixture of sand and arenga wood fiber waste has no effect on kailan growth. The combination of mixtures of sand and arenga fiber waste showed no interaction. Observations on plants such as plant height, number of leaves, leaf greenness levels, the fresh weight of crop stover and stover dry weight of the plant, showed a row of the highest results in the media mix washed sand, washed sand and rice husk</p>

scholarly journals Toleransi Plasma Nutfah Padi Lokal terhadap Salinitas

2018 ◽  
Vol 23 (1) ◽  
pp. 51 ◽  
Author(s):  
Tintin Suhartini ◽  
Try Zulchi
Keyword(s):  
Plant Height ◽  
Salinity Tolerance ◽  
Negative Correlation ◽  
Dry Weight ◽  
Gene Bank ◽  
Dead Leaf ◽  
Randomized Design ◽  
Highly Sensitive ◽  
Number Of Leaves ◽  
Completely Randomized Design

<p><strong>Abstract</strong></p><p>The research was aimed to screen the local rice germplasms for salinity tolerance. The 104 local rice germplasms were derived of collection of Gene Bank of Indonesian Center for Agricultural Biotechnology and Genetic Resources Research and Development (ICABIOGRAD) were tested to salinity. The activities was carried out in greenhouse of ICABIOGRAD. The 15 day old seedlings were planted in pots soil contained NaCl 0.4%. One accession of rice was planted in 2 pots, each pot contained 4 seedlings. Observation of plant symptom was conducted after 1 month planted. The experiment was carried out in a Completely Randomized Design with 2 replications. The results of the analysis showed there were different responsses among rice accesions to the treatment. Salinity caused dry and dead leaves, there were very significant differences between the varieties for plant height, dry weight plant, number of total leaves, and number of green leaves. There were a high and negative correlation of plant height and total number of leaves with percentage of dead leaves. The result showed 21 accesions were tolerant to moderately&amp;#8722;tolerant, while Pokkali as a tolerant check, most tolerant. There were two accessions were tolerant with dead leaf percentage &lt;50%, i.e. Tjempo Brondol (reg. 5800) and Gembira Putih (reg. 20602), whereas Pokkali as resistant check had low dead leaf percentage (16.9%) and 19 accessions were moderately-tolerant with dead leaf percentage &lt;70%, and 82 accesions were sensitive to highly-sensitive.</p><p><strong>Abstrak</strong></p><p>Penelitian ini bertujuan untuk menyaring plasma nutfah padi yang memiliki sifat toleran terhadap salinitas. Sejumlah 104 plasma nutfah padi lokal yang berasal dari koleksi Bank Gen BB Biogen diuji terhadap salinitas. Kegiatan dilakukan di rumah kaca BB Biogen. Bibit padi berumur &amp;plusmn;15 hari ditanam pada pot berisi tanah yang sudah dilumpurkan dengan larutan garam NaCl 0,4% (4.000 ppm). Satu aksesi padi ditanam pada 2 pot, masing masing pot berisi 4 tanaman. Setelah berumur 4 minggu dari tanam dilakukan pengamatan meliputi tinggi tanaman, bobot kering akar, bobot kering tanaman, jumlah daun total, jumlah daun hijau, dan jumlah daun mati. Pengujian menggunakan Rancangan Acak Lengkap dengan 2 ulangan. Hasil analisis varians menunjukkan terdapat perbedaan respons plasma nutfah padi terhadap perlakuan salin yang diberikan. Perbedaan sangat nyata terdapat pada tinggi tanaman, bobot kering tanaman, jumlah daun total, dan jumlah daun hijau. Terdapat korelasi yang tinggi dan negatif pada tinggi tanaman dan jumlah daun total dengan persentase daun mati. Hasil pengujian telah terpilih 21 aksesi plasma nutfah padi toleran hingga agak toleran, sedangkan Pokkali sebagai cek sangat toleran. Dua aksesi yang toleran dengan persentase daun mati &lt;50%, yaitu Tjempo Brondol (reg. 5800) dan Gembira Putih (reg. 20602), Pokkali sebagai varietas kontrol dengan tingkat persentase daun mati 16,9%, sedangkan 19 aksesi termasuk kelompok agak toleran dengan persentase daun mati &lt;70%, dan 82 aksesi termasuk kelompok peka hingga sangat peka.</p>

Sign in / Sign up

Export Citation Format

Share Document