scholarly journals Screening for Salinity Tolerance in Lowland Rice

Zuriat ◽  
2015 ◽  
Vol 2 (1) ◽  
Author(s):  
Suhaimi Sulaiman
Keyword(s):  
Mass Screening ◽  
Salinity Tolerance ◽  
Plant Development ◽  
Block Design ◽  
Salinity Level ◽  
Rapid Evaluation ◽  
Vegetative Period ◽  
Randomized Complete Block Design ◽  
Experiment Unit ◽  
Traditional Cultivars

Screening for breeding materials for salinity tolerance is most accurately done by measuring grain yields. However, mass screening during the vegetative period of plant development using pots in a greenhouse is more effective for rapid evaluation of large amounts of germplasm.In this study, Pokkall and IR 22 cultivars were grown in pots which contained five kilograms of soil. The soil had been fertilized with four liters of Hoagland's solution which was salinized with a given concentration of 0, 1000 ppm, 2000 ppm, 3000 ppm, 4000 ppm, 5000 ppm, and 6000 ppm NaCl. Four of two weeks old seedlings were transplanted into each pot. The experiment unit were arranged in a Randomized Complete Block Design (RCBD) with two replications.A salinity level of 4000 ppm NaCl (8.5 mmhos/cm EC) showed the best differentiation of phenotypic performance for the salinity tolerance evaluation four weeks after transplanting.This technique was also used for screening of 23 traditional cultivars from South Kalimantan at salinity level of 8.5 mmhos/cm EC. Pokkal was used as tolerant check, and IR 22 was use as a susceptible check.Bayar Putih, Pandak, Pucuk, Lemo, and Duyung cultivars were identified as the most tolerant cultivars. It was also found that the percentage of sodium was greater in susceptible plants than in tolerant ones. However, the differences in N, P, and K were relatively small.  

scholarly journals SALINITY TOLERANCE OF SEVERAL RICE GENOTYPES AT SEEDLING STAGE

2018 ◽  
Vol 18 (2) ◽  
pp. 63
Author(s):  
Heni Safitri ◽  
Bambang Sapta Purwoko ◽  
Iswari Saraswati Dewi ◽  
Sintho Wahyuning Ardie
Keyword(s):  
Salinity Tolerance ◽  
Block Design ◽  
Seedling Stage ◽  
Salinity Level ◽  
Growth And Yield ◽  
Future Research ◽  
Nutrient Culture ◽  
Two Factors ◽  
Check Variety ◽  
Rice Genotypes

<p class="abstrakinggris">Salinity is one of the most serious problems in rice cultivation. Salinity drastically reduced plant growth and yield, especially at seedling stage. Several rice genotypes have been produced, but their tolerance to salinity has not yet been evaluated. The study aimed to evaluate salinity tolerance of rice genotypes at seedling stage. The glasshouse experiment was conducted at Cimanggu Experimental Station, Bogor, from April to May 2013. Thirteen rice genotypes and two check varieties, namely Pokkali (salt tolerant) and IR29 (salt sensitive) were tested at seedling stage. The experiment was arranged in a randomized complete block design with three replications and two factors, namely the levels of NaCl (0 and 120 mM) and 13 genotypes of rice. Rice seedlings were grown in the nutrient culture (hydroponic) supplemented with NaCl at different levels. The growth and salinity injury levels of the genotypes were recorded periodically. The results showed that salinity level of 120 mM NaCl reduced seedling growth of all rice genotypes, but the tolerant ones were survived after 14 days or until the sensitive check variety died. Based on the visual injury symptoms on the leaves, five genotypes, i.e. Dendang, Inpara 5, Inpari 29, IR77674-3B-8-2-2-14-4-AJY2, and IR81493-BBB-6-B- 2-1-2 were tolerant to 120 mM salinity level, while Inpara 4 was comparable to salt sensitive IR29. Hence, Inpara 4 could be used as a salinity sensitive genotype for future research of testing tolerant variety. Further evaluation is needed to confirm their salinity tolerance under field conditions. </p>

scholarly journals Nutrient accumulation models in the banana (Musa AAA Simmonds cv Williams) plant under nitrogen doses

2017 ◽  
Vol 66 (3) ◽  
pp. 391-396 ◽  
Author(s):  
Jaime Torres Bazurto ◽  
Jaiver Danilo Sanchez ◽  
Daniel Gerardo Cayon Salinas
Keyword(s):  
Plant Development ◽  
Block Design ◽  
Repeated Measurements ◽  
Nutrient Accumulation ◽  
Banana Plant ◽  
N Accumulation ◽  
Development Stages ◽  
Randomized Complete Block Design ◽  
High Doses ◽  
Absolute Control

This research determined the effect of four nitrogen (N) doses on the nutritional behavior of (N), potassium (K), phosphorus (P), calcium (Ca) and magnesium (Mg), respectively, in banana Williams, during five plant development stages and two productive cycles. The treatments were as follows: 1) absolute control, 2) 0 N, 3) 161 kg N ha-1, 4) 321.8 kg N ha-1 and 5) 483 kg N ha-1, respectively. A multivariate approach of the differences among cycles was used to adjust the models and eliminate their individual effect, with a randomized complete block design with repeated measurements over time. There were significant differences among plant development stages, with an increase in nutrient accumulation in the banana plant, there were no differences among treatments or blocks, nor in the interaction block by treatment, but the dose of 321.8 kg of N, exhibited a fructification increase in terms of N accumulation, harvest was exceeded by the dose of 483 kg of nitrogen, Ca and Mg, were the other nutrients, which showed effect at the dose of 483 kg of N but increasing only to harvest. It was concluded that high doses of nitrogen showed a trend to increase nutrient accumulation during the development of the banana plant, but especially until fructification, with the exception of Ca and Mg, which achieved the greatest accumulation in harvest.

PENGARUH LAMA PERENDAMAN GA3 DAN BEBERAPA MACAM TSS TERHADAP PERTUMBUHAN TANAMAN BAWANG MERAH (Allium ascalonicum L.)

2021 ◽  
Vol 23 (2) ◽  
pp. 129-135
Author(s):  
Happy Kharisma Sudjarwo ◽  
Ida Retno Moeljani ◽  
Didik Utomo Pribadi
Keyword(s):  
Growth Regulators ◽  
Plant Development ◽  
Block Design ◽  
Seed Type ◽  
Randomized Complete Block Design ◽  
Main Variable ◽  
Plant Length

[THE EFFECT OF IMMERSION IN GA3 AND SOME KINDS OF TSS ON THE GROWTH OF SHALLOTS (Allium ascalonicum L.)]. Shallots (Allium ascolonicum L.) are very much needed by the community and have become one of the high-value commodities in Indonesia. TSS or True Shallot Seed is an elective that can be created as a wellspring of seeds and is an answer for address the issue for quality shallot seeds. In the utilization of TSS seeds, there are still a few deterrents in low development strength. In the use of TSS seeds, there are still some obstacles in low growth strength. Dormancy can be solved by treatment with growth regulators that can encourage, inhibit or qualitatively alter plant development and advancement. One of the PGRs that is regularly utilized is Gibberellins (GA3). This review meant to get the connection between splashing time with a few TSS seeds on the development of shallots, which included germination, development simultaneously, development speed, germination life, plant length, and the quantity of leaves. This examination was led in Ketindan Town, Lawang Area, Malang Regime, East Java, from February to April 2021. This review was a factorial investigation organized dependent on a Randomized Complete Block Design (RCBD) comprising of 2 factors: the length of inundation and the kind of TSS seeds that were rehashed as much as multiple times. The main variable was the inundation time in a GA3 arrangement with a centralization of 40 ppm comprising of no dousing, 15 minutes, 30 minutes, and 45 minutes of inundation. The seed factor of shallot TSS consists of TSS Sanren, TSS Lokananta, and TSS Bauji. The outcomes showed that the mix of splashing time and TSS seed type fundamentally impacted development speed simultaneously and the quantity of leaves 7 dap.

scholarly journals Micronutrientes foliares na goiabeira fertirrigada com biofertilizante e nitrogênio no semiárido

2017 ◽  
Vol 7 (4) ◽  
pp. 523 ◽  
Author(s):  
Elisson Alves Santana ◽  
Jackson Teixeira Lobo ◽  
Renan Nunes Pereira ◽  
Augusto Miguel Nascimento Lima ◽  
Jaílson Cavalcante Cunha ◽  
...  
Keyword(s):  
Experimental Design ◽  
Plant Development ◽  
Nitrogen Fertilization ◽  
Block Design ◽  
Organic Fertilizers ◽  
Experimental Area ◽  
Randomized Complete Block Design ◽  
N Dose ◽  
Mn Concentrations

Required in small amounts, micronutrients play a key role for adequate plant development, which can be supplied by synthetic or organic fertilizers, such as biofertilizers. Thus, an experiment was conducted between July 2014 and August 2015, in the experimental area of the Federal University of the São Francisco Valley, Petrolina-PE, Brazil, to evaluate the micronutrient leaf concentrations of Paluma guava as a function of fertigation with bovine biofertilizer and Nitrogen fertilization. The experimental design was a randomized complete block design (5 x 2) referring to the concentrations of bovine biofertilizer (0, 2.5, 5.0, 7.5 and 10%) and N-fertilizing (50% and 100% of N dose following plant demand), with four replicates and five plants per plot. Only the leaf Mn concentrations are affected by bovine biofertilizer in guava trees fertigated with 100% of recommended N. Leaf concentrations of all the micronutrients (Mn, B, Fe and Zn) are not influenced by nitrogen fertigation. The biofertilizer is efficient in providing Fe.

scholarly journals Soil microbial activity and hairy beggarticks’ germination after application of crude glycerin

Revista CERES ◽  
2017 ◽  
Vol 64 (2) ◽  
pp. 151-158
Author(s):  
Matheus Ramos Caixeta ◽  
Saul Jorge Pinto de Carvalho ◽  
Poliana Coste e Colpa ◽  
Márcio Donizetti de Andrade ◽  
Breno Régis Santos
Keyword(s):  
Microbial Activity ◽  
Plant Development ◽  
Agricultural Soils ◽  
Block Design ◽  
Soil Microbial Activity ◽  
Crude Glycerin ◽  
Soil Microbial ◽  
Randomized Design ◽  
Randomized Complete Block Design ◽  
By Products

ABSTRACT Biodiesel stands out as an alternative for petroleum-based products, but its production generates a large amount of by-products. This study was carried out at the Instituto Federal de Educação, Ciência e Tecnologia do Sul de Minas Gerais, Campus Machado, with the objective of evaluating the impacts of the disposal of crude glycerin on agricultural soil and its microbial activity as well as in plant development. An experiment with a completely randomized design, five treatments, and five replicates was developed in the laboratory to analyze microbial activity. Soil samples of 100 g were incubated for 36 days with concentrations of crude glycerin, namely: 0; 48.7; 146.1; 292.2 L ha-1. Besides these four treatments, flasks without soil and glycerin have composed one more treatment. During this period, the CO2 volume released in each sample was evaluated 11 times. Another experiment was developed in the laboratory with hairy beggarticks’ achenes to evaluate crude glycerin effects on plant development. A randomized complete block design was used in a 4x2 factorial scheme, with five replicates, the same glycerin concentrations, and two glycerin sources (laboratory and biodiesel plant-unit). Crude glycerin stimulated soil microbial activity for doses of up to 143.83 L ha-1, being a positive indicative for future studies on its application to agricultural soils. Glycerin applications reduced the hairy beggarticks’ root protrusion, even at the lowest doses. Residues have Na+ contents that limit their application in agricultural soils.

DISTRIBUSI DAN IDENTIFIKASI POPULASI SINTRONG (Crossocephalum crepidiodes.Benth) RESISTEN PARAKUAT PADA LAHAN JAGUNG (Zea mays) DI KABUPATEN DAIRI

2017 ◽  
Vol 4 (2) ◽  
pp. 149-161
Author(s):  
Berton Sianturi
Keyword(s):  
Zea Mays ◽  
Dose Response ◽  
High Resistance ◽  
Block Design ◽  
Recommended Dose ◽  
Second Step ◽  
Resistance Level ◽  
Susceptible Population ◽  
Randomized Complete Block Design ◽  
Susceptible Populations

Crassocephalum crepidioides on Cornfields in Dairi Regency had been reported tobecome more difficult to control using paraquat. The objective of the research was todetermine the characteristics and the distribution of C.crepidioides resistant to paraquatin cornfields. The experiment was carried out in two steps, the first step was screeningthe population of C. crepidioides with paraquat at the recommended dose, and the secondstep, dose-response experiment for the resistance level of C. crepidioides population withdose 0, 76, 152, 304,5, 609, 1218, and 2436 g.ai /ha. In the first step experiment, paraquatdichloride was applied at 280 g.ai/ha. The treatments were arranged in a randomized blockdesign with 3 replication. The second step experiment was that the resistant populationsconfirmed in the first experiment were sprayed for their dose-response. The treatmentswere arranged in a randomized complete block design (CRBD). The results showed thatof 30 populations of C. crepidiodes, 19 populations (63.3%) were categorized to beresistant with the mortality ranging from 10.84% to 52.08%, and 11 populations (36.7%),was categorized as high resistance with mortality of 0% to 9.21%. The level ofresistance (R/S) of R-C25, R-C27, and R-C30 populations of C. crepidioides were 12,3,14,86, and 24,83 times consecutively, compared with the susceptible population. Thenumber of C. crepidioides chlorophyl leaves in susceptible populations was significantlylower than that of a resistant populations.

Response of corn (Zea mays L.) to various organic-based fertilizers in marginal upland of Sta. Rita, Samar

2017 ◽  
pp. 31-43
Author(s):  
Berta Ratilla ◽  
Loreme Cagande ◽  
Othello Capuno
Keyword(s):  
Block Design ◽  
Management Strategies ◽  
Chemical Properties ◽  
Organic Fertilizers ◽  
Growth And Yield ◽  
Physical And Chemical Properties ◽  
Total N ◽  
Randomized Complete Block Design ◽  
Physical And Chemical ◽  
And Chemical Properties

Organic farming is one of the management strategies that improve productivity of marginal uplands. The study aimed to: (1) evaluate effects of various organic-based fertilizers on the growth and yield of corn; (2) determine the appropriate combination for optimum yield; and (3) assess changes on the soil physical and chemical properties. Experiment was laid out in Randomized Complete Block Design, with 3 replications and 7 treatments, namely; T0=(0-0-0); T1=1t ha-1 Evans + 45-30-30kg N, P2O5, K2O ha-1; T2=t ha-1 Wellgrow + 45-30-30kg N, P2O5, K2O ha-1; T3=15t ha-1 chicken dung; T4=10t ha-1 chicken dung + 45-30-30kg N, P2O5, K2O ha-1; T5=15t ha-1 Vermicast; and T6=10t ha-1 Vermicast + 45-30-30kg N, P2O5, K2O ha-1. Application of organic-based fertilizers with or without inorganic fertilizers promoted growth of corn than the control. But due to high infestation of corn silk beetle(Monolepta bifasciata Horns), its grain yield was greatly affected. In the second cropping, except for Evans, any of these fertilizers applied alone or combined with 45-30-30kg N, P2O5, K2O ha-1 appeared appropriate in increasing corn earyield. Soil physical and chemical properties changed with addition of organic fertilizers. While bulk density decreased irrespective of treatments, pH, total N, available P and exchangeable K generally increased more with chicken dung application.

Effect of Bio and Organic Fertilizers on Pumpkin's (Cucurbita pepo L.) Leave Content of N, P, and K

2020 ◽  
Vol 10 (1) ◽  
pp. 241-245
Author(s):  
Ammar Hameed Madi ◽  
Jawad A. Kamal Al-Shibani
Keyword(s):  
Cucurbita Pepo ◽  
Sandy Loam ◽  
Block Design ◽  
Organic Fertilizers ◽  
Flowering Stage ◽  
College Of Agriculture ◽  
Significant Difference ◽  
Randomized Complete Block Design ◽  
Loam Soil ◽  
Four Levels

This study was conducted to investigate the effect of bacterial bio-fertilization A. chroococcum and P. putide and four levels of compost (0, 1, 2, 3) tons.h-1 on the leaves content of N.P.K elements. The experiment was carried out in one of the greenhouses of the College of Agriculture - University of Al-Qadisiyah during fall season 2018-2019. It designed in accordance with the Randomized Complete Block Design (RCBD) with three replicates in sandy loam soil. The means of treatments were compared with the least significant difference (LSD) at (5)% probability level. The results present that the treatments of A. chroococcum, P. putide and compost at (3) tons.kg-1 significantly increases the leaves content of K.P.K compared to all other treatments in the flowering stage (4.970, 0.5000, and 4.930) mg.kg-1, respectively. This treatment was followed by the effect of the treatment of A. chroococcum and compost at (3) tons.kg-1, which increases the values of all traits except the leaf content of (P). Bio-fertilizer with P. putide + A. chroococcum significantly increases the leaves' content of P.

Growth and Branching Responses of Portulaca grandiflora to Foliar Applications of Chemical Growth Regulators

HortScience ◽  
1998 ◽  
Vol 33 (3) ◽  
pp. 447c-447
Author(s):  
T.J. Banko ◽  
M.A. Stefani
Keyword(s):  
Growth Regulators ◽  
Growth Habit ◽  
Stem Elongation ◽  
Block Design ◽  
Shoot Elongation ◽  
Main Shoot ◽  
Randomized Complete Block Design ◽  
Portulaca Grandiflora ◽  
Prostrate Growth ◽  
Secondary Shoot

During container production of portulaca, growth of long, prostrate, sparsely branched stems makes handling of plants difficult, and reduces their commercial appeal. Growers prefer to minimize shoot elongation while increasing branching to provide a full, compact plant. The objectives of this study were to evaluate growth regulators for promotion of branching and inhibition of stem elongation. Container-grown plants ≈21 cm in diameter were treated with sprays of ProShear (benzylaminopurine) at 62.4, 125, and 250 ppm; Promalin (benzyaminopurine + gibberellins 4+7) at 125, 250, and 500 ppm; Atrimmec (dikegulac) at 250, 500, and 750 ppm; and Florel (ethephon) at 250, 500, and 750 ppm. These treatments were compared with untreated controls in a randomized complete-block design. Main shoot lengths were measured at 16, 31, and 51 days after treatment (DAT). Numbers of new shoot breaks were counted 16 DAT. The growth habit, that is, tendency to grow upright or prostrate, was also evaluated 16 DAT. The most-effective material for retarding primary shoot elongation and for stimulating secondary shoot development was ProShear. At 16 DAT, 250 ppm ProShear reduced shoot elongation by 25% compared to control plants. This treatment also increased the number of secondary shoot breaks by 143%. Promalin increased the number of new shoot breaks, but it also increased the lengths of all shoots. High rates of Florel and Promalin caused shoots to grow predominantly upright rather then prostrate. ProShear, however, caused more prostrate growth as rate increased.

Influence of Nitrogen and Potassium on Three Zoysiagrasses

HortScience ◽  
1998 ◽  
Vol 33 (3) ◽  
pp. 516b-516
Author(s):  
James N. McCrimmon
Keyword(s):  
Gulf Coast ◽  
Block Design ◽  
Nutrient Content ◽  
Zoysia Japonica ◽  
Tissue Samples ◽  
Color Quality ◽  
Randomized Complete Block Design ◽  
Color Density ◽  
Minimal Research ◽  
Micronutrient Fertilizer

Zoysiagrass has great potential for use in the Gulf Coast states as a turfgrass. There has been minimal research on the nitrogen (N) and potassium (K) fertility response of zoysiagrass and the effect on turf color, quality, and nutrient content. The objective of this study was to evaluate the effects of N and K fertility on zoysiagrass. A study was conducted on three zoysiagrasses: Zoysia japonica × Z. tenuifolia Willd. ex Trin. (`Emerald'); Z. japonica Steud. (`Meyer'); and Z. matrella. The N and K treatment combinations consisted of high (H) and low (L) rates of N and K at the following levels: N levels of 454 and 227 g N/92.9 m2 per month and K levels of 454 and 227 g N/92.9 m2 per month. The treatment combinations were (N and K): HH, HL, LH, and LL and were applied in two split applications monthly from July through November. The study was a randomized complete-block design with three replications. All plots received two applications of a micronutrient fertilizer (late June and August), were irrigated as needed, and maintained at a height of 3.8 cm. Color, density, texture, uniformity, and quality were determined visually for each month. Plant tissue samples were collected (September) and analyzed for macronutrient and micronutrient contents. There were significant differences for color, density, and quality in the following months: September (color and density); October (quality); and November (color and quality). There were differences in leaf texture for all months. There were significant differences for N, magnesium (Mg), and K contents but there were no differences for any micronutrient. This study indicated that all three zoysiagrasses provided acceptable color and quality during the summer and fall, and that N and K rates affected N, K, and Mg contents in the plant.

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