Relative Competitiveness Between Cultivated and Weedy Rice under Full and Low Light

ABSTRACT: Cultivated and weedy rice biotypes exhibit morphophysiological variations under low light, affecting competition between plants. The aim of this study was to assess relative competitiveness between cultivated and weedy rice under full and low light. Three experiments were conducted in a greenhouse, using a completely randomized design with four repetitions. The treatments in the experiment I were arranged in additive series while in the experiments II and III treatments were arranged in replacement series. Experiments II and III were carried out concomitantly to assess coexistence between the rice cultivar and weedy rice. The treatments consisted of different plants proportions: 100:0 (cultivated rice monoculture), 75:25, 50:50, 25:75 and 0:100 (weedy rice monoculture), keeping the total plant population obtained in experiment I (240 plants m-2) constant. Experiment II was conducted with full solar radiation and III under 50% light. The variables analyzed were shoot dry weight and plant height, 35 days after emergence (DAE). Competition among plants was evaluated via graphs and by interpreting competition indices. Concerning shoot dry weight, mutual losses were recorded between competitors, whereas equal competition for resources was observed for plant height. Weedy rice was more competitive than cultivated rice regardless of the light environment assessed, indicating the need for integrated methods to control this weed.

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Respons bibit kopi Liberika hasil sambung pucuk dengan kopi Robusta pada berbagai panjang entres dan inokulasi mikoriza

Jurnal Agro ◽

10.15575/12747 ◽

2022 ◽

Vol 8 (2) ◽

pp. 164-177

Author(s):

Elis Kartika ◽

Gusniwati Gusniwati ◽

Made Deviani Duaja

Keyword(s):

Plant Height ◽

Dry Weight ◽

Robusta Coffee ◽

Shoot Dry Weight ◽

Randomized Design ◽

Root Stock ◽

Break Time ◽

Completely Randomized Design ◽

Glomus Sp ◽

Number Of Shoots

Grafting bibit kopi memiliki tujuan menghasilkan tanaman dengan karakteristik terbaik dari dua varietas kopi yang disambungkan. Kopi robusta digunakan sebagai batang bawah, karena lebih tahan terhadap kondisi yang tidak menguntungkan di lahan gambut. Upaya peningkatan ketahanan batang bawah dapat memanfaatkan mikoriza dan disambungkan dengan kopi liberika sebagai batang atas. Penelitian ini bertujuan untuk mendapatkan bibit kopi Liberika unggul hasil grafting dengan kopi Robusta bermikoriza serta mendapatkan panjang entres kopi Liberika yang mampu meningkatkan pertumbuhan bibit kopi Liberika hasil sambung pucuk. Percobaan ini menggunakan Rancangan Acak Lengkap faktorial dengan dua faktor dan empat ulangan. Faktor pertama adalah inokulasi mikoriza (tanpa aplikasi mikoriza dan aplikasi mikoriza gabungan Glomus sp-1a dan Glomus sp-3c) dan faktor kedua berupa panjang entres (10, 15, 20 dan 25 cm). Parameter yang diamati adalah persentase keberhasilan sambungan, waktu pecah tunas, pertambahan tinggi bibit, pertambahan jumlah daun, jumlah tunas, bobot kering tunas, dan infeksi mikoriza. Hasil penelitian menunjukkan respons bibit kopi Liberika hasil grafting dengan bibit kopi Robusta bermikoriza terbaik diperoleh pada panjang entres 15 cm, sedangkan yang disambungkan dengan Robusta tidak bermikoriza diperoleh pada panjang entres 25 cm. Pertumbuhan bibit kopi Liberika hasil grafting dengan bibit kopi Robusta terbaik pada berbagai panjang entres diperoleh pada kopi Robusta bermikoriza.” The main goal of coffee grafting is to create a crop with the best characteristic of two coffee varieties in one plant. Robusta coffee is used as the rootstock, which is more resistant to constraints and unfavorable conditions in the peatland. The effort to increase rootstock resistance is inoculated by mycorrhizae and grafted with Liberica coffee as the scion. This study aimed to obtain the best scion length in order to increase the growth of Liberica coffee with Robusta coffee as the inoculated rootstock. The experiment used factorial completely randomized design with the first factor was mycorrhizae inoculation (without inoculation and inoculation of Glomus sp-1a and Glomus sp-3c combination) and the second factor was the length of scion (10, 15, 20 and 25 cm). The variables observed were the percentage of success grafted plants, shoot break time, growth (plant height, number of leave, number of shoots, and shoot dry weight) and mycorrhizae infection. The results showed that the plant inoculated by mycorrhizae and scion lenght of 15 cm gave the best percentage of the success graft, shoot break time, and growth of scion. While, the root stock without inoculation showed the best result with the scion length 25 cm. The best growth of grafted plant was obtained in all scion length with mycorrhizae inoculation.

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Pemanfaatan Abu Boiler Kelapa Sawit terhadap Pertumbuhan Tajuk Tanaman Tomat

Daun Jurnal Ilmiah Pertanian dan Kehutanan ◽

10.33084/daun.v2i1.174 ◽

2015 ◽

Vol 2 (1) ◽

pp. 54-65

Author(s):

Nurul Hidayati ◽

Asro Laelani Indrayanti

Keyword(s):

Plant Height ◽

Dry Weight ◽

Growth And Yield ◽

Growth Media ◽

Shoot Dry Weight ◽

Optimal Dosing ◽

Randomized Design ◽

Survey Results ◽

Completely Randomized Design ◽

Boiler Ash

The purpose of this research is gaining influence boiler ash on growth and yield of tomatoes, (4) obtain optimal dosing of boiler ash is curuently applied to some media. This research was conducted at Jl. Manjuhan Palangkaraya. The time of this study will last for 4 months This study uses a completely randomized design factorial 2 factors. The first factor is the dose Abu boiler with a 5 stage treotment (without ash, 5 ton.ha-1, l0 ton ha-1, 15 ton.ha-1 and 20 ton.ha-1 . The second factor is the type of media with 3 levels of treatment (Soil sand, soil Podsolid and Peat. The treatment combinotion obtained as-mony as 15 combinations of treatment, with a repeat 3 times. The survey results reveoled that (1) the interaction of growth media and boiler ash dose showed significantly different results against 2,4 dan 6-wieks after planting variables plant height, amount of leaves on the age, 2, 4 and 6 weeks after, plantig, stem diameter at 4 weeks afier planting, and shoot dry weight lastest research. Treatment combination boiler ash 15 ton / ha and peat media (treatment b4t3) provide significant variahles plant height, leaf amount, diameter of stock, and shoot dry weight.

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Does Resistance to Propanil or Clomazone Alter the Growth and Competitive Abilities of Barnyardgrass (Echinochloa crus-galli)?

Weed Science ◽

10.1614/ws-d-10-00151.1 ◽

2011 ◽

Vol 59 (3) ◽

pp. 353-358 ◽

Cited By ~ 12

Author(s):

Muthukumar V. Bagavathiannan ◽

Jason K. Norsworthy ◽

Prashant Jha ◽

Kenneth Smith

Keyword(s):

Production Systems ◽

Management Strategies ◽

Relative Yield ◽

Dry Weight ◽

Replacement Series ◽

Shoot Dry Weight ◽

Randomized Design ◽

Number Of Leaves ◽

Competitive Abilities ◽

Pressure Resistance

Barnyardgrass biotypes resistant (R) to propanil (PR) or clomazone (CR) have been confirmed in rice production systems in Arkansas. However, it is not clear whether resistance to these herbicides impose any fitness cost on theRbiotypes compared to susceptible barnyardgrass (S). The overall objective of this experiment was to determine if the growth and competitiveness of barnyardgrass is altered by resistance to propanil or clomazone and to establish a competitive hierarchy among theS,PR, andCRbiotypes. A replacement series study was conducted in a greenhouse using five proportions ofSandRbiotypes (0 : 100, 25 : 75, 50 : 50, 75 : 25, and 100 : 0). The study was carried out in a completely randomized design (CRD) with four replications. The variables, including plant height, number of tillers, number of leaves, and shoot dry weight, were used for quantifying the differences in competitive abilities. Replacement series indices were calculated to explore the competitiveness. Expected (He) and observed (Ho) values for relative yield (RY) and relative yield total (RYT) were compared for number of tillers, number of leaves, and shoot dry weight for each biotype comparison. Other replacement series indices including competitive ratio (CR), relative crowding coefficient (RCC), and aggressiveness index (AI) also were calculated for these variables. The results showed that there were no major differences among theSandRbiotypes for these variables, indicating that in the absence of selection pressure, resistance to propanil or clomazone does not influence the growth and competitiveness of barnyardgrass. The findings will be useful for predicting the dynamics of resistant populations in the absence of herbicide selection and for designing suitable management strategies.

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Influence of growth media and bulbil sizes on plant growth and corm yield of porang (Amorphophallus muelleri Blume)

IOP Conference Series Earth and Environmental Science ◽

10.1088/1755-1315/911/1/012043 ◽

2021 ◽

Vol 911 (1) ◽

pp. 012043

Author(s):

M. Soedarjo ◽

P. Sasmita

Keyword(s):

Plant Growth ◽

Plant Height ◽

Research Work ◽

Dry Weight ◽

Growth Media ◽

Fresh Weight ◽

Plant Materials ◽

Shoot Dry Weight ◽

Planting Material ◽

Randomized Design

Abstract Porang (Amorphophallus muelleri Blume) is usually cultivated on the field under the tree as natural shading. Porang can also be grown on a pot containing limited amount of growth media. The present research work was carried to evaluate the minimum amount of growth media required for optimum growth and corm yield. The study used bulbils (10 g/bulbil and 20 g/bulbil) and corm (+ 15 g/corm) sown on growth media of 2.5 kg, 5.0 kg and 7.5 kg/pot as treatments. Each treatment was arranged in completely randomized design and was replicated 3 times. Plant height, plant diameter, shoot dry weight, diameter and thickness of corm and fresh weight of corm were measured to evaluate the influence of the treatments on growth and corm yield of porang. The plant growth of porang measured as plant height, plant diameter, shoot dry weight was improved when the planting materials were planted on bigger size of growth media. Bigger size of bulbil caused better growth of porang on each growth medium. The effect of plant materials and the size of growth media on porang growth was in parallel to its effect on corm yield measured as corm diameter, corm thickness and fresh weight of corm. The result of the present study suggests to use bigger bulbil and bigger size of growth media when planted on polyethylene bag. Corm as planting material was better than bulbil because less size of corm produced similar plant growth and corm yield compared to bigger size of bulbil. Therefore, the use of corm as planting material is more favorable to bulbil.

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Aplikasi Pasir dan Serat Batang Aren sebagai Substrat pada Budidaya Cabai Keriting secara Hidroponik

Agrosains: Jurnal Penelitian Agronomi ◽

10.20961/agsjpa.v18i1.18674 ◽

2016 ◽

Vol 18 (1) ◽

pp. 1

Author(s):

Rhian Pambudi ◽

Dwi Hardjoko ◽

Endang Setia Muliawati

Keyword(s):

Plant Height ◽

Pearson Correlation ◽

Wood Fiber ◽

Dry Weight ◽

Fresh Weight ◽

Root Dry Weight ◽

Shoot Dry Weight ◽

Randomized Design ◽

Two Factors ◽

Pearson Correlation Test

This research aims for finding out the response of chili to type of sound and composition of substrate in hydroponic systems and obtain the optimal composition of substrate in chili planting hydroponically. This research started from August 2014 until February 2015 at Faculty of Agriculture, Sebelas Maret University Surakarta using Completely Randomized Design that consists of two factors. First factor was sand type with 3 levels and the second one the composition of substrate with 4 levels. Data of observation result have been analyzed based on F test at 5% grade and average comparison test using Duncan Multiple Range Test (DMRT) at 5% grade. The Pearson Correlation test is used for analyzing to observe the relation of inter variable. The type of sand is not interacting with the composition of substrate except at observation of green leaves. The best growing and development of chili is at pure sand beach has the highest value it can be seen from fresh weight of root, root dry weight, plant height and canopy fresh weight, and the composition of the substrate (sand: palm wood fiber) 3:1 indicated by the root dry weight, plant height, canopy fresh weight, shoot dry weight, the weight of fruit per plant and the sum of fruits per plant.

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Effects of an Autoregulatory Senescence-inhibitor Gene Construct on Nicotiana alata Link and Otto.

HortScience ◽

10.21273/hortsci.33.3.519d ◽

1998 ◽

Vol 33 (3) ◽

pp. 519d-519 ◽

Cited By ~ 4

Author(s):

Kenneth R. Schroeder ◽

Dennis P. Stimart

Keyword(s):

Agrobacterium Tumefaciens ◽

Plant Height ◽

Dry Weight ◽

Nicotiana Alata ◽

Wild Type ◽

Gene Encoding ◽

Delayed Senescence ◽

Gene Construct ◽

Shoot Dry Weight ◽

Inhibitor System

Nicotiana alata Link and Otto. was transformed via Agrobacterium tumefaciens encoding a senescence-specific promoter SAG12 cloned from Arabidopsis thaliana fused to a Agrobacterium tumefaciens gene encoding isopentenyl transferase (IPT) that catalyzes cytokinin synthesis. This was considered an autoregulatory senescence-inhibitor system. In 1996, we reported delayed senescence of intact flowers by 2 to 6 d and delayed leaf senescence of transgenic vs. wild-type N. alata. Further evaluations in 1997 revealed several other interesting effects of the SAG12-IPT gene construct. Measurement of chlorophyll content of mature leaves showed higher levels of both chlorophyll a and b in transgenic material under normal fertilization and truncated fertilization regimes. At 4 to 5 months of age transgenic plants expressed differences in plant height, branching, and dry weight. Plant height was reduced by 3 to 13 cm; branch counts increased 2 to 3 fold; and shoot dry weight increased up to 11 g over wild-type N. alata. These observations indicate the system is not tightly autoregulated and may prove useful to the floriculture industry for producing compact and more floriferous plants.

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Effect of Salinity Levels (NaCl) on Yield, Yield Components and Quality Content of Sesame (Sesamum Indicum L.) Cultivars

Environmental Management and Sustainable Development ◽

10.5296/emsd.v5i2.9852 ◽

2016 ◽

Vol 5 (2) ◽

pp. 104

Author(s):

Helale Bahrami ◽

Amir Ostadi Jafari ◽

Jamshid Razmjoo

Keyword(s):

Plant Height ◽

Yield Components ◽

Seed Oil ◽

Tap Water ◽

Dry Weight ◽

Salinity Level ◽

Shoot Dry Weight ◽

Weight Yield ◽

Yield And Yield Components ◽

Salinity Levels

Seeds of ten sesame cultivars (Karaj, Darab, Safiabad, Jiroft, Borazjan, Yellow-white, Felestin, Ultan, Isfahan and Abpakhsh) were sown into soil filled pots in 2008 and 2009. Pots were watered with six levels of salts (0.0038 (tap water as control), 4.89, 8.61, 10.5, 14.54, 17.74 ds.m-1 NaCl) until full maturity. Plant height, root and shoot dry weight, yield and yield components, seed oil and protein contents of cultivars were measured. Increasing salinity caused significant reduction in plant height, root and shoot dry weight, yield and yield components, seed oil and protein contents of all cultivars. However, there were significant differences among the cultivars for measured traits for each salinity level. Based on seed oil yield data, Safiabad and Kraj at 0.0038ds.m-1, Safiabad and Ultan at 4.89ds.m-1, Ultan, Safiabad and Darab at 8.61 salinity levels were the superior cultivars. High variability in tolerance to salinity among the tested sesame cultivars suggests that selection of more salt tolerant cultivars for planting or breeding purposes is possible.HighlightsEffects of contrasting salinity levels (0.0038 (tap water as control), 4.89, 8.61, 10.5, 14.54, 17.74 ds.m-1NaCl) on sesame cultivars were tested. Salinity reduced plant growth and yield and seed oil and protein contents. However, there were significant differences among the cultivars for measured traits for each salinity level.

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Efektivitas Fungi Mikoriza Arbuskula Indigenous Terhadap Pertumbuhan Stek Pucuk Gosale (Syzygium Malaccense (L.) Merr & L.M Perry)

Journal of Tropical Silviculture ◽

10.29244/j-siltrop.9.3.211-216 ◽

2018 ◽

Vol 9 (3) ◽

pp. 211-216

Author(s):

Steffani Silferansti Tak ◽

Irdika Mansur ◽

Prijanto Pamungkas

Keyword(s):

Dry Weight ◽

Seedling Quality ◽

New Production ◽

Shoot Dry Weight ◽

Root Shoot Ratio ◽

Randomized Design ◽

Local Plant ◽

Height Increase ◽

Inoculation Treatment ◽

Amf Inoculation

Gosale (Syzygium malaccense (L.) Merr. & L.M.Perry) that belongs to the Myrtaceae family is one of the leading local plant species grown in Halmahera, North Maluku. Some problems in gosale breeding such as limited seed availability, low seed production due to seasonal fruiting and the nature of seeds that can not be stored for a long period (recalcitrant), suggest an alternative new production technique through a vegetative propagation (shoot cutting). Moreover, Improved seedling quality can be attempted by AMF inoculation, in which AMF at shoot cuttings play a role in initiating the formation of adventive roots. This study was conducted for 9 months using completely randomized design (CRD) with indigenous AMF inoculation treatment. The results showed that gosale cuttings that planted with indigenous AMF inoculation were effective at all observed variables. Inoculum AMF inoculated without the addition of host plant Pueria javanica at gosale shoot cuttings suggested the best treatment. The treatment of inoculum AMF from Kusumadehe (M1) obtained the best result in the variable of plant height increase, dry weight of shoot, dry weight of root, root shoot ratio), and seedling quality index. While the treatment of Inoculum AMF from Soakonora revealed the highest result in the variable of plant diameter increase and AMF colonization.Keywords: gosale, shoot cuttings, AMF, Pueraria javanica, West Halmahera

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EFEKTIFITAS FUNGI MIKORIZA ARBUSKULA (FMA) SERTA PUPUK NITROGEN DAN FOSFAT TERHADAP PERTUMBUHAN SEMAI JABON (Anthocephallus cadamba Roxb.) Effectiveness of Arbuscula Mycorrhizal Fungi (AMF) Nitrogen and Phosphate Fertilizer toward Jabon ........

Journal of Tropical Silviculture ◽

10.29244/j-siltrop.8.1.20-25 ◽

2017 ◽

Vol 8 (1) ◽

pp. 20-25

Author(s):

Fransisca Yosina Regina Luturmas ◽

Sri Wilarso Budi R. ◽

Irdika Mansur

Keyword(s):

Plant Height ◽

Mycorrhizal Fungi ◽

Dry Weight ◽

Phosphate Fertilizer ◽

Soil Types ◽

Shoot Dry Weight ◽

Main Plot ◽

Fast Growing Species ◽

Glomus Sp ◽

Plot Design

Jabon (Anthocephallus cadamba Roxb.) is one of fast-growing species with high economical value, and well adapted on some of soil types. The aims of this research were to analyze the effectiveness of AMF species isolated from Samama (Anthocephallus macrophyllus (Roxb.) Havil) and to determine the favorable dose of nitrogen and phosphate fertilizer for Jabon growth. The research was conducted CRD-split plot design main plot was Acaulospora sp.1 (M1), Glomus sp.1 (M2), Acaulospora sp.2 (M3), Acaulospora sp.3 (M4), Glomus sp.2 (M5). While the fertilizer as the sub-plot, consist of control (P0), urea 0.5g+rockphosphat 2g (P1), urea 1g+rockphosphat 4g (P2). The result showed that AMF and fertilizer applications effectively improved Jabon grown, especially in height, stem diameter, and shoot dry weight. The interaction (M4P1) increased plant height 154.73%, diameter 75.38% and shoot dry weight 376.09% compared with control. P1 treatment was better for growth of Jabon that was inoculated by mycorrhiza. Acaulospora sp.1 (M1) originally from Samama without fertilizer had the best effectiveness for Jabon growth.Key words: Acaulospora, indigenous

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MODIFICAÇÕES NO MEIO DE CULTURA, FOTOPERÍODO E TEMPO DE CULTIVO AFETAM O ALONGAMENTO E ENRAIZAMENTO IN VITRO DE BANANEIRA CV. PACOVAN

Nativa ◽

10.31413/nativa.v6i1.4731 ◽

2018 ◽

Vol 6 (1) ◽

pp. 27

Author(s):

Marcos Vinícius Marques Pinheiro ◽

Ana Cristina Portugal Pinto De Carvalho ◽

Fabrina Bolzan Martins

Keyword(s):

Plant Height ◽

Culture Medium ◽

Culture Media ◽

Dry Weight ◽

Salt Mixture ◽

Musa Spp ◽

Fresh Biomass ◽

Shoot Dry Weight ◽

Number Of Leaves

No intuito de elevar as taxas de sobrevivência durante a etapa de aclimatização e posterior plantio a campo, avaliou-se o enraizamento in vitro de bananeira cv. Pacovan, em diferentes concentrações de sais MS e de sacarose. Utilizou-se DIC, esquema fatorial (6x2x3), com seis meios de cultura [sendo três concentrações de nutrientes do meio MS (100%; 50% de macronutrientes; e 50% dos sais macro e micronutrientes), e duas concentrações de sacarose (1,5/3,0%)], dois fotoperíodos (12/16 h) e três tempos de cultivo (21, 28 ou 35 dias) e seis repetições/tratamento. Analisaram-se: altura da planta, número de folhas/planta, massas frescas e secas das partes aérea e radicular. Para altura da planta, massa fresca da parte aérea e radicular, o meio MS 50% dos sais + sacarose (1,5%) com fotoperíodo de 16 h e tempo de cultivo de 35 dias foi satisfatório. Para massa seca da parte aérea foi MS 50% de sais + sacarose (3%), e para massa seca da parte radicular, MS 100% + sacarose (3%) (em 12hs/28 dias e 16hs/21 dias). Para o alongamento/enraizamento in vitro da bananeira cv. Pacovan sugere-se MS 50% de sais (macro e micronutrientes), redução ou manutenção de sacarose (1,5 ou 3%) em 16h/35 dias de cultivo.Palavra-chave: Musa spp., propagação in vitro, sistema radicular. CHANGES IN CULTURE MEDIUM, PHOTOPERIOD AND TIME OF CULTIVATION AFFECT THE IN VITRO ELONGATION AND ROOTING OF BANANA CV. PACOVAN ABSTRACT:In order to achieve high rates of survival during the acclimatization and later planting in the field, was evaluated the in vitro of banana cv. Pacovan plants under different concentrations of sucrose and MS basal salt mixture. The experiment was assembled in a DIC, in 6x2x3, six different culture media [three different MS salt mixture concentrations (100%; 50% of macronutrients; and 50% of macro/micronutrients) and two sucrose concentrations (1.5/3%)], two photoperiods (12/16 hours) and three cultivation times (21, 28 or 35 days). Each treatment was composed by 6 replicates. Plant height, number of leaves/plant, fresh and dry weight of roots and shoots, were analyzed. Satisfactory results for plant height and shoot and root fresh biomass were observed in MS with macro/micronutrients (50%) + sucrose (3%), 16 hours/35 days. The highest values of shoot dry weight were observed in MS with macro/micronutrients (50%) + sucrose (3%); the highest root dry weight was achieved with MS 100% + sucrose (3%) (12hs/28 and 16hs/21 days). The suggested medium for the in vitro elongation and rooting stage of banana cv. Pacovan is the MS with 50% of salts (macro and micronutrients), reduction or maintenance of sucrose (1.5 or 3%) in 16h/35 days of cultivation.Keywords: Musa spp., in vitro propagation, root system. DOI:

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