scholarly journals 343 Emergence of Five Lettuce Cultivars using Seeds Developed in Different Seasons

HortScience ◽  
1999 ◽  
Vol 34 (3) ◽  
pp. 502C-502
Author(s):  
Lynze Greenwood ◽  
Janice M. Coons ◽  
Henry R. Owen ◽  
Lisa Ferguson ◽  
Ronglin Wang

Lettuce (Lactuca sativa) is one of the most important U.S. fresh-market vegetables with year-round consumption. For winter markets, lettuce is produced in the southwestern states with plantings in early fall when soil temperatures are high. Seed germination of lettuce, however, is inhibited by soil temperatures over 25 °C. The objective of this study was to test the emergence and growth of five lettuce cultivars using two seedlots produced in winter or summer to provide information for improving stand establishment at high temperatures. Seeds of five cultivars (`Empire', `Parris Island Cos', `Waldmann's Green', `Prizehead', and `Dark Green Boston') produced in Yuma, Ariz., during summer or winter months were used. Seeds were planted in a greenhouse mix in plastic trays and grown in a growth chamber at 23, 25, 30 and 35 °C. After 4 weeks, number of emerged plants, number of leaves, height, fresh weight, dry weight, and leaf area were measured. At lower temperatures (23 and 25 °C), more plants emerged and plants developed more rapidly than at higher temperatures (30 and 35 °C). More plants emerged of `Empire' and `Parris Island Cos' than of `Waldmann's Green' or `Dark Green Boston'. Growth varied greatly for the different cultivars. At 35 °C, only `Empire' winter seed emerged. At other temperatures, summer seed lots generally were better than or equal to winter seedlots. This information suggests that seeds developed during the summer are more vigorous at emergence than those developed during the winter.

2018 ◽  
Vol 33 (1) ◽  
pp. 34
Author(s):  
Samanhudi Samanhudi ◽  
Ahmad Yunus ◽  
Bambang Pujiasmanto

Potential development of medicinal plants in Karanganyar is very large, because this area is famous as a center of medicinal plants such as ginger, turmeric, kencur, and temulawak. In the development of medicinal plants, the approach of organic cultivation is one of the alternatives that can be done to achieve the business. Therefore the application of technology to society about organic farming on Biopharmaca Cluster of Karanganyar was conducted with the aim to apply organic cultivation techniques that have resulted from previous studies, so it can be applied by the community to increase income and welfare. This application of technology to society activity is held in Sambirejo, Jumantono, Karanganyar. The research was conducted from March to October 2016. The results showed that the application of chicken manure affects the number of leaves, number of tillers, and the fresh weight of turmeric rhizome. The addition of manure (chicken, goat, cow) can increase all variables of planting growth which include plant height, number of leaf, number of tillers, fresh weight of plant, dry weight of plant, and fresh weight of rhizomes. Giving three types of manure (chicken, goat, cow) with mycorrhizal dose treatment there is no intraction to some growth observation variables. Mycorrhizal treatment with a dose of 10 g/plant can increase the number of tillers in turmeric. Overall the application of mycorrhizal at various doses (5, 10, and 15 g/plant) can increase plant height, leaf number, number of tillers, and fresh weight of turmeric rhizome.


2018 ◽  
Vol 3 (1) ◽  
Author(s):  
Ghani Hendrika ◽  
Arifah Rahayu ◽  
Yanyan Mulyaningsih

This study was aimed at assessing the growth and production of celery plants grown with various compositions of N,P and K fertilizer and compost. The study was done at the Trial Farm of Faculty of Agriculture, Djuanda University, Bogor fiom September to November 2015. A completely randomized design with two factors was used. The factors consisted of compost rate and N,P and K fertilizer rate. Compost was given in four levels, namely no compost (0% R), 26.3% gcompost/plant (50% R), 52.5 g compost/plant (100% R), and 78.7 g compost/plant (150% R). N, P and K fertilizer was given in five levels, namely no fertilizer (0% R), 4 g Urea, 0.3 g SP-36, 0.2 g KCl (25% R), 0.9 g Urea, 0.6 g SP-36, 0.4 g KCI (50% R), 1.3 g Urea, 0.8 g SP-36, 0.6 g KCl (75% R), and 1.7 g Urea, 1.1 g SP-36, 0.8 g KCl (100% R). All fertilizers were administered gradually at the time of planting and 2 weeks after planting. Three replicates were allocated into each treatment making up 60 experimental units. Results showed that celery plants given synthetic fertilizer at 100% R had higher plant height, number of leaves, number of seedlings, harvest fresh weight (g), saleable fresh weight (g), root biomass (g), and root dry weight (g) than those treated with no fertilizer (0% R). Plants treated with 150% compost had higher plant height, number of leaves, harvest fresh weight (g), saleable fresh weight (g), root length (cm), and root dry weight (g) than those treated with no fertilizer (0% R). Thus the best celery growth and production in this study was obtained on plant 150% R compost   and 100% R synthetic fertilizer nourished.Key words: celery, compost, N, P, K fertilizer, harvest flesh weight


Plants ◽  
2020 ◽  
Vol 9 (3) ◽  
pp. 294
Author(s):  
Ma Claudia Castañeda-Saucedo ◽  
Ernesto Tapia-Campos ◽  
Jessica del Pilar Ramírez-Anaya ◽  
Jaqueline Beltrán

Stevia is an important non-caloric sweetener that has health-beneficial properties. The objective is to evaluate growth, development, and rooting of stevia plants during different seasons of the year using growth hormones. Eight experiments were set up in Ciudad Guzman, Jalisco, Mexico, with three treatments (T): T1, indol-3 butyric acid (IBA) 7.4 mM; T2, alphanaphthylacetamide (ANA) 6.4 mM + IBA 0.3 mM; and T3, control. The variables evaluated were rooted plantlets, plant height, root length, number of leaves, stem diameter, leaf dry weight, stem dry weight, root dry weight, leaf area, shoot biomass, total biomass, as well as development and growth indexes. Four samplings were conducted in each experiment. The results show that the most appropriate months for propagating stevia cuttings are February, March, April, May, and July, when 96% to 99% of the cuttings rooted. The hormones had the best results related to production of root development. The control was outstanding only in variables related to production of shoot biomass and not to root development. It is concluded that stevia can be propagated vegetatively using cuttings treated with IBA 7.4 mM or ANA 6.4 mM + IBA 0.3 mM, preferable in the period from February to July, with the exception of June.


2020 ◽  
Vol 26 (4) ◽  
pp. 537-544
Author(s):  
Abdul Kareem A.J. Mohammad Saeed

Abstract An experiment was conducted during the season 2018-2019 in the lath house to study the effect of foliar spray with Ascorbic Acid (AsA) and Salicylic Acid (SA) on vegetative and flowering growth traits of Gazania (Gazania rigens L.) cv. Frosty Kiss Mixed. The experiment was designed as a factorial experiment (3×3) in Randomized Complete Blocks Design (RCBD) with three replicates. Plants were sprayed with concentrations of 0, 100, and 200 mg L-1 of AsA, and 0, 150 and 300 mg L-1 of SA. Foliar spray with 200 mg L-1 of AsA was superior on increasing number of leaves (40.00), number of suckers (9.22), leaf area (2174.09 cm2), leaves dry weight (6.36 g), number of flowers (5.64), early of flowering date (97.22 days), flower fresh and dry weight (4.78 g) (0.51 g) respectively, while spray with a concentration of 100 mg L-1 led to increase flower diameter (6.37 cm) and flowering duration (10.85 days). Foliar spray with SA improved all vegetative and flowering traits. Treatment of 300 mg L-1 was the most significant effect in increasing number of leaves (39.56), leaf area (2182.06 cm2), leaves fresh weight (43.93 g), number of flowers (5.83), flower diameter (6.31 cm), early of flowering date (98.07 days), and flower dry weight (0.50 g). The interaction effect between the studied factors was significant in all studied traits. Treatment of AsA200×SA150 was the most effective and gave the best results in terms of number of suckers (9.11), dry weight of leaves (6.49 g), number of flowers (5.87), flower diameter (6.44 cm), flowering date (96.98 days), flowering duration (10.89 days).


2014 ◽  
Vol 16 (1) ◽  
pp. 19
Author(s):  
Samanhudi Samanhudi ◽  
Dwi Hardjoko ◽  
Riandy Adhitya

<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>


2020 ◽  
Vol 10 (2) ◽  
pp. 165
Author(s):  
KADEK JUNIARI ◽  
I NYOMAN RAI ◽  
I MADE SUKEWIJAYA

Time Storage and Effectivity of the Prototype of Mychorrhiza Biological Fertilizer with Volcanic and Sea Sand as the Carrier Media.  This research aimed to study time storage and the efectivity of prototype of mychorrhiza biological fertilizer with volcanic and sea sand as the carrier media. The study was arranged using a randomized block design with 2 factors. The first factor was carrier media of mychorrhiza spore consist of 2 levels i.e. volcanic and and sea sand, and the second factor was time storage of prototype of mychorrhiza biological fertilizer consist of 3 levels i.e. 1, 2, and 3 month. The result of research showed that volcanic sand carrier media was better than the sea sand media proved by higher total dry weight. The best time storage of prototype of mychorrhiza biological fertilizer in this research was 1 month indicated by the highest amount of spores after storage. The interaction between carrier media and time storage gave significantly different just to stem diamater and fresh weight of corn cob.


HortScience ◽  
1997 ◽  
Vol 32 (4) ◽  
pp. 593E-594
Author(s):  
Mack Wilson ◽  
Dianna Rogers ◽  
Victor Khan ◽  
Clauzell Stevens

Styrofoam ice trays were used to grow `Discovery Yellow' marigolds transplanted 4 weeks after seeds were germinated and then grown in two nutrient cultures. The cultures were Hoagland at the rate of 1/2 ml/6 gal water and nutraculture (20-10-20) at 2.4 ozs/6 gal water. Half containers were aerated and other half were not aerated. Data collected were root, stem, bloom fresh and dry weight, and stem length and number of blooms and leaves. Results showed that stem length, and number of leaves and blooms were significantly greater when grown in Hoagland solution. Fresh and dry weight of roots, stems, and blooms were significantly greater when grown in Hoagland solution. Nonaerated treatments performed significantly better than aerated treatments for either hydroponic solutions.


Akta Agrosia ◽  
2016 ◽  
Vol 19 (1) ◽  
pp. 20-27
Author(s):  
Tri Utami ◽  
Hermansyah Hermansyah ◽  
Merakati Handajaningsih

The purpose of this study was to determine the optimum concentration of shallot extract to the growth of grape cuttings grape cuttings. This study was conducted from September to December 2015 in the city of Bengkulu. This research used Completely Randomized Design with a single factor and five replications. Treatment concentrations of 0% (control), shallot extract concentration of 25%, 75% and 100%. The variables measured were the time to sprout, shoot height, the number of leaves, number of roots, fresh weight and dry weight of cuttings. The results showed that the concentration of shallot extract 100% concentration enhances the growth of grape cutting, time to sprout, and the concentration of extract 50% increase shoot height and number of leaves on grape cuttings.


AGRICA ◽  
2020 ◽  
Vol 6 (1) ◽  
pp. 10-22
Author(s):  
Josina Irene Brigetha Hutubessy

This research aims to determine the effect of concentration of organic fertilizer Super NASA to the growth of seeds of white teak and to know the optimum dosage of organic fertilizer Super NASA can increase the growth of NASA plant seed white teak. The design used in this study was a Randomized Block Design with the treatment used is N0: without fertilizer Super NASA NASA, N1: Fertilizer NASA7 .5 ml seeds-1, N2: Fertilizer NASA 15 ml seeds-1, N3: Fertilizer NASA 22.5 ml seeds-1, N4: Fertilizer NASA 30 ml seeds-1. Variable observation in this study is the height of the plant, number of leaves, leaf area, fresh weight tan-1, fresh and dry weight oven tan-1. The results showed that the granting of Fertilizer NASA exerted a highly significant effect on the height of plant (23,65%), the number of leaves is not significant, leaf area (53,61%), fresh weight tan-1 (60,89%) and dry weight tan-1 (55,43%). The optimum dosage of Fertilizers NASA give the seed growth of white teak is best on the seed-1is 30 ml.


2021 ◽  
Vol 32 (1) ◽  
pp. 23
Author(s):  
Rahma Widyastuti ◽  
Nurul Husniyati Listyana ◽  
Erri Setyo Hartanto

<em>Gotu kola is one of the medicinal plants that has begun to be cultivated by the Indonesian people. It’s cultivation needs to follow the GAP to produce the qualified yield, including the use of fertilizers. Biofertilizers have been widely developed to reduce adverse effects of chemical fertilizers to the environment, thus an organic cultivation method can be an alternative. The aim of this study was to determine the effect of biofertilizer on growth and yield of gotu kola. This research was an experimental study with a completely randomized design (CRD) using 8</em> <em>planting media treatments consisting of (a) Soil + manure + dolomite; (b) Soil manure + 1 g biofertilizer; (c) Soil + dolomite + 1g biofertilizer; (d) Soil + manure + 3 biofertilizer; (e) Soil + dolomite + 3 biofertilizer; (f) Soil + manure + 5 g biofertilizer; (g)  Soil + dolomite + 5 g  biofertilizer;  and  (h)  Soil +  3 g</em> <em>biofertilizer. Parameters observed were leaf area, stem length, number of leaves, number of tillers, fresh weight, dry weight and asiaticoside content. The results showed that combination treatment of biofertilizer (1 g) with dolomite (30 g) gives better effect in increasing the number of tillers and number of leaves, while the combination of biofertilizer (5 g) and dolomite (30 g) is the best for asiaticoside levels in gotu cola.</em>


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