scholarly journals Chemical control of rice whitefly (Aleurocybotus occiduus Maria) in Chitwan, Nepal

2013 ◽  
Vol 2 ◽  
pp. 42-55
Author(s):  
S Pokhrel ◽  
SP Pokhrel
Keyword(s):  
Plant Growth ◽  
Grain Yield ◽  
Plant Height ◽  
Chemical Control ◽  
Growth Parameters ◽  
Leaf Number ◽  
Grain Number ◽  
Green Leaves ◽  
Leaf Yellowing

Effectiveness of five common insecticides was evaluated against a newly established rice insect, Whitefly (Aleurocybotus occiduus Maria) on main season rice (var: Sabitri) at Bharatpur-10, Chitwan (350 m) in 2005. The insecticides tested were: Noorani (Chloropyrifos 50% + Cypermethrin 5% EC) @ 2ml/litre of water, Rogar @ 1.5ml/litre of water, Phoskil (monocrotophos) @ 2ml/litre of water, Furadan @ 1kg a.i/ha and Anumida (Imidacloprid 17.8% SL) @ 1ml/4 litre of water. The plant growth parameters: plant height, number of yellow and green leaves, active and dead tillers and the grain yield were recorded. Anumida (Imidacloprid 17.8% SL) provided perfect control of Whitefly and gave the highest plant height (60 vs 50 cm), highest leaf number (46.7 vs 3.7), highest tillering (4.4 folds), highest green infertile tillers (16.3 vs6.7) with highest number of ears (3.0 vs 0.0) and grain number (26.3 vs 0.0)/hill. Anumida (Imidacloprid 17.8% SL) also provided comparatively lower leaf yellowing and drying (8.5 vs 22.5) then the control. Anumida (Imidacloprid 17.8% SL) @ 1ml/ 4 liter of water is recommended against rice Whitefly however, Rogar @ 1.5 ml/litre of water, Phoskil (monocrotophos) @ 2ml/litre of water, Noorani (Chloropyrifos 50% + Cypermethrine 5% EC) @ 2ml/liter of water and Furadan @ 1kg a.i./ha also can serve the purpose. The hills not using insecticide were completely failure to produce ears and grains. DOI: http://dx.doi.org/10.3126/ajn.v2i0.7520 Agronomy Journal of Nepal (Agron JN) Vol. 2: 2011 pp.42-55

scholarly journals Seed priming with zinc improves field performance of maize hybrids grown on calcareous chernozem

2021 ◽  
Author(s):  
Gordana Tamindžić ◽  
Maja Ignjatov ◽  
Dragana Milošević ◽  
Zorica Nikolić ◽  
Ljiljana Kostić Kravljanac ◽  
...  
Keyword(s):  
Plant Growth ◽  
Grain Yield ◽  
Plant Height ◽  
Yield Components ◽  
Growth Parameters ◽  
Field Performance ◽  
Seed Priming ◽  
Maize Hybrids ◽  
Zn Concentration ◽  
Grain Zn Concentration

Highlights Seed priming with Zn resulted in an average increase of maize grain yield by about 18% compared to control, and by about 8.4 % compared to water priming. Zn-priming promoted plant growth and increased final plant height of three maize hybrids. Overall experiment plant growth parameters were correlated with grain yield components and grain yield Overall effect of seed priming on grain Zn concentration was significant, but it was increased by Zn-priming in two hybrids. Using the seeds with elevated Zn content can improve overall field performance of maize grown on calcareous chernozem.   Abstract Delivery of micronutrients to plants through seed priming improves seedling vigour and increase crops yields. Two-year filed trial was conducted in Pančevo, Serbia, with aim to study the effect of seed priming with zinc (Zn) on field performance of three maize hybrids on calcareous chernozem deficient in plant available Zn. Seed priming treatments were: control (without priming), water priming and priming with 4 mM zinc sulphate water solution . Seed priming had significant effect on early plant growth, plant height, yield components, grain yield and grain Zn concentration.  Zn-priming promoted plant growth and increased final plant height. Across two growing seasons with contrasting precipitation and three tested maize hybrids, Zn-priming resulted in an average increase of grain yield by about 18% compared to control, and by about 8.4 % compared to water priming. A significant relationship between plant growth parameters, grain yield components and grain yield was detected. Grain Zn concentration was increased by Zn-priming in two hybrids in the season with less precipitation and in one hybrid in the second season.. The results imply that using the seeds with elevated Zn content can improve overall field performance of maize grown on calcareous chernozem.

scholarly journals Musik Gamelan Bali Meningkatkan Pertumbuhan dan Produktivitas Tanaman Sawi Pakcoy (Brassica rafa L.)

2018 ◽  
Vol 6 (2) ◽  
pp. 73
Author(s):  
Dewa Putu Yoga Gautama ◽  
I Made Anom S. Wijaya ◽  
I Wayan Widia
Keyword(s):  
Plant Growth ◽  
Plant Height ◽  
High Frequency ◽  
Dry Weight ◽  
Sound Waves ◽  
High Frequency Sound ◽  
Frequency Sound ◽  
Green Leaves ◽  
Mustard Plant ◽  
Canopy Area

Pemberian gelombang suara dengan frekuensi tinggi dapat merangsang mulut daun  (stomata) tetap terbuka, akibatnya laju dan efisiensi penyerapan pupuk meningkat yang bermanfaat bagi tanaman. Hasil penggunaan sonic bloom pada tanaman adalah mampu menstimulir metabolisme sel-sel tanaman, sehingga terjadi peningkatan penyerapan nutrisi dan uap air lewat daun yang berpengaruh pada pertumbuhan dan produktivitas tanaman. Tujuan dari penelitian ini yaitu (1) untuk mengetahui pengaruh pemberian musik Gamelan Bali terhadap pertumbuhan dan produktivitas tanaman sawi pakcoy dan (2) untuk menentukan jenis musik Gamelan Bali yang memberikan pertumbuhan dan produktivitas sawi pakcoy yang terbaik. Penelitan ini menggunakan tanaman sawi pakcoy (Brassica Rafa L.).  Perlakuan yang diberikan  dalam penelitian adalah pemberian musik gamelan bali dengan nuansa musik yang berbeda. Perlakuan 1 menggunakan musik gamelan Angklung, Perlakuan 2 menggunakan musik gamelan Semarpagulingan dan Perlakuan 3 menggunakan musik gamelan Gong Kebyar. Data yang diperoleh dianalis ANOVA dengan program IBM SPSS 20. Variabel yang diamati yaitu tinggi tanaman, luas kanopi daun tanaman, tingkat kehijauan daun tanaman, dan berat kering. Hasil penelitian menunjukan bahwa pemberian musik gong kebyar menghasilkan nilai tertinggi pada variabel tinggi tanaman, luas kanopi daun, tingkat kehijauan daun, dan berat kering yang  masing menghasilkan nilai yaitu yaitu 29,98 cm, 1684 cm2, 186,79, dan 68,61 gr. Pemberian musik memberikan pengaruh yang positif dan berbeda nyata pada pertumbuhan tanaman sawi pakcoy. Semakin tinggi frekuensi musik yang diberikan maka semakin baik pertumbuhan tanaman sawi pakcoy yang dihasilkan.  High frequency sound waves can stimulate the mouth of leaf (stomata) remains opened.The stomata remains open leading to efficient absorption of fertilizer. The purposes of this research were (1) to find out the effect of Balinese instrument music on the growth and productivity of pakcoy mustard plant and (2) to determine the type of Balinese instrument music that gives the best growth and productivity of mustard pakcoy. The treatment of this research was the application of Balinese instrument music with different musical nuances for 3 hours. Treatment 1 was using Angklung instruments music, treatment 2 was using Semarpagulingan instrument music and treatment 3 using Gong Kebyar instrument music. The obtained data was analized by ANOVA with the IBM SPSS 20 program. The observed variables include plant height, canopy area of plant leaf, green leaves level and dry weight. The results showed that Gong Kebyar instrument music application produces the highest value of 29.98 on the height of the plant variables, the widest value of 1684 cm2  on the canopy area variables, the biggest value that is 68,61 gr on the dry weight variables and the largest value of 186.79 on the green leaves level variables. Balinese instrument music application effect to the growth of pakcoy mustard plant. The best plant growth was the plant with gong kebyar instrument music application from all observed variables.

scholarly journals Optimizing hydroponic culture media and NO3−/NH4+ ratio for improving essential oil compositions of purple coneflower (Echinacea purpurea L.)

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Fatemeh Ahmadi ◽  
Abbas Samadi ◽  
Ebrahim Sepehr ◽  
Amir Rahimi ◽  
Sergey Shabala
Keyword(s):  
Particle Size ◽  
Essential Oil ◽  
Plant Growth ◽  
Plant Height ◽  
Growth Parameters ◽  
Echinacea Purpurea ◽  
Peat Moss ◽  
Root Weight ◽  
Total Biomass ◽  
Growing Media

AbstractMedicinal plants represent a valuable commodity due to beneficial effects of their natural products on human health, prompting a need for finding a way to optimize/increase their production. In this study, a novel growing media with various perlite particle size and its mixture with peat moss was tested for hydroponic-based production of Echinacea purpurea medicinal plant under greenhouse conditions. The plant growth parameters such as plant height, total fresh leave weight, fresh root weight, total biomass, total chlorophyll, leaf area, and essential oil compositions were assessed. Perlite particle size in the growing media was varied from very coarse (more than 2 mm) to very fine (less than 0.5 mm), and the ratio between perlite and peat moss varied from 50:50 v/v to 30:70 v/v. In addition, two nitrate (NO3−) to ammonium (NH4+) ratios (90:10 and 70:30) were tested for each growing media. The medium containing very fine-grade perlite and 50:50 v/v perlite to peat moss ratio was found to be most optimal and beneficial for E. purpurea performance, resulting in maximal plant height, fresh and dry weight, leaf surface area, and chlorophyll content. It was also found that an increase in NO3−/NH4+ ratio caused a significant increase in plant growth parameters and increase the plant essential oil content. The major terpene hydrocarbons found in extract of E. purpurea with the best growth parameters were germacrene D (51%), myrcene (15%), α-pinene (12%), β-caryophyllene (11%), and 1-Pentadecene (4.4%), respectively. The percentages of these terpene hydrocarbons were increased by increasing of NO3−/NH4+ ratio. It can be concluded that decreasing the perlite particle size and increasing the NO3−/NH4+ ratio increased the plant growth parameters and essential oil compositions in E. purpurea.

scholarly journals Productivity of Cowpea (Vigna unguiculata (L) Walp) genotypes under Varying Population Densities

2021 ◽  
pp. 4089-4100
Author(s):  
Afolabi Michael Segun ◽  
Ojeleye Abiola Elizabeth ◽  
Olalekan Kazeem Kolapo ◽  
Shittu Kabiru Alani
Keyword(s):  
Population Density ◽  
Grain Yield ◽  
Plant Height ◽  
Interaction Effect ◽  
Yield Components ◽  
Dry Matter ◽  
Growth Parameters ◽  
Appreciable Effect ◽  
Population Densities ◽  
Flower Production

To investigate the influence of three population densities (88,000, 44,000, and 29,000 plants/ha) on the growth and yield of five cowpea varieties (IT97K-461, IT97K-568-18, IT98K-131-2, IT99K-1060 and IT99K-`245), a field experiment was conducted at Teaching and Research farm of Landmark University. Growth parameters such as germination count, plant height, and number of trifoliate leaves per plant, number of branches per plant, flower production dynamics and dry matter determination were measured, while harvest index, shelling percentage, number of seeds per pod, see weight pods per plant and grain yield were measured at harvest as yield components. Data were subjected to statistical analysis of variance (ANOVA) using SAS Institute. Significant means were separated using Duncans Multiple Range Test at 5% probability level. Results revealed that there were no constant trends in growth parameters response to population density. Plant height and flower production decreased with increased population density, while number of leaves per plant and dry matter increased with increasing population density. There was no appreciable effect of population density on branching. All these parameters were significantly (p≤0.05) affected with variety, while there was no significant (p≤0.05) interaction effect. Most yield components decreased with increasing population density while grain yield however, slightly increased with increasing population density. All yield parameter and grain yield significantly varied with variety, while there were no appreciable interaction effect. In conclusion, a population density of 88,000 plants /ha gives the highest growth and grain yield. While, variety, IT97-568-18 gives the higher growth and grain yield than other varieties studied.

scholarly journals Arbuscular Mycorrhizal Fertilization Of Corn (Zea mays L.) Cultivated on Ferrous Soil in Southern Benin

2017 ◽  
Vol 5 (2) ◽  
pp. 99
Author(s):  
Mèvognon R. Aguegue ◽  
Pacôme A. Noumavo ◽  
Gustave Dagbenonbakin ◽  
Nadège A. Agbodjato ◽  
Sylvestre Assogba ◽  
...  
Keyword(s):  
Zea Mays ◽  
Grain Yield ◽  
Plant Height ◽  
Zea Mays L ◽  
Growth Parameters ◽  
Arbuscular Mycorrhizal ◽  
Chemical Fertilizer ◽  
Southern Benin

Theattainmentofthemillenniumfordevelopmentobjectives require toimprove the productivityofmajorcultures like maize(ZeamaysL.).Thepresentstudy aimedto assess the potentialofGlomuscubens,Rhizophagusintraradicesand Funneliformismosseaeto improvetheproductivityof corn cultivatedon reddish ferrous soilinSouthern Benin.Ablock of nine treatments with four repetition completely randomized was installed¶.Plant height anddiameterandleaf area are growth parameters measured. Grain yield and endomycorrhizal infection were also evaluated.Thebestgrowthsandgrain yield (2.33t/haand2.12t/ha)were obtainedrespectivelywiththe plantstreatedwithR.intraradices+50%ofNPKandG.cubens+50% of NPKcompared tothecontrol plants(1.48t/ha).Moreover,thegreatfrequenciesofmycorhization(44% and32.25% were observedrespectivelyonthe plants treated with G.cubens + 50% of NPKandR.intraradices +50% NPK.Theseresultsshowthatthe respectivecombinationofthesetwoArbuscular Mycorrhizal Fungiwith 50%NPKcanincrease of 50%theseeds yield of corncompared tothe seeds yield obtained with the control plants.In addition,G.Cubens and R.intraradicesare active in the colonization of maize roots.Use ofR.Intraradices orG.cubensincombinationwith 50% ofNPKhelpto increasethe corn productivityand to reduce of half the chemical fertilizer commonly used by corn farmers at Southern Benin.

scholarly journals Residual impact of wellgrow formulation and npk on growth and yield of wheat (Triticum aestivum L.)

2015 ◽  
Vol 44 (1) ◽  
pp. 143-146 ◽  
Author(s):  
VS Meena ◽  
BR Maurya ◽  
RS Meena
Keyword(s):  
Triticum Aestivum ◽  
Grain Yield ◽  
Plant Height ◽  
Dry Matter ◽  
Growth Parameters ◽  
Triticum Aestivum L ◽  
Organic Manure ◽  
Growth And Yield ◽  
Straw Yield ◽  
Matter Production

Effect of concentrate organic manure (wellgrow grain and wellgrow soil) and NPK improved the growth and yield of wheat. Significant improvement in terms of growth parameters like plant height, tillers, dry matter production and productive tillers with application of 120 : 60 : 60 NPK + 300 kg wellgrow soil/ha and at par with application of 120 : 60 : 60 NPK + 300 kg wellgrow grain/ha, treatment receiving 100% NPK + 300 kg wellgrow soil/ha resulted maximum grain yield (4545 kg /ha). Treatment of 100% NPK + 300 kg wellgrow grain/ha maintained higher straw yield (5715 kg/ha) and test weight (44.10 g) due to application of 100 % NPK along with 200 kg wellgrow soil/ha whereas it was at par with application of 75 and 100% NPK with both levels of wellgrow formulation. DOI: http://dx.doi.org/10.3329/bjb.v44i1.22738 Bangladesh J. Bot. 44(1): 143-146, 2015 (March)

scholarly journals Effects of potassium on panicle structure and spikelet morphology of a double grained rice cultivar

2020 ◽  
Vol 49 (3) ◽  
pp. 663-670
Author(s):  
AKM Golam Sarwar ◽  
Al-Muzahid Mridul ◽  
Sontosh Chandra Chanda ◽  
Israt Jahan Shelley
Keyword(s):  
Plant Height ◽  
Rice Yield ◽  
Rice Cultivar ◽  
Lower Portion ◽  
Leaf Number ◽  
Secondary Branch ◽  
Grain Number ◽  
Grain Number Per Panicle

Influence of K on panicle structure and spikelet morphology of a double grained rice cultivar was evaluated. Results showed that K enhanced the plant height, leaf number, yield and yield contributing descriptors in double grained rice cultivar. The ratio of single-double grained spikelets on a panicle varied from 70 : 30 to 59 : 41. The position of spikelets on a panicle viz. primary vs. secondary branch, middle vs. upper or lower portion of panicle, had little effect on single-double grain ratio. However, K significantly affected the single-double grained spikelet ratio between primary and secondary branches. Multi-grained spikelets showed the potential to increase grain number per panicle thereby increasing rice yield.

scholarly journals Sorgo en doble hilera versus surco sencillo en el noreste de México.

2016 ◽  
Vol 5 ◽  
pp. 104
Author(s):  
Raúl Rodríguez ◽  
Heriberto Torres ◽  
Héctor Williams ◽  
Noé Montes
Keyword(s):  
Population Density ◽  
Grain Yield ◽  
Plant Height ◽  
Block Design ◽  
The Other ◽  
Plant Mortality ◽  
Grain Number ◽  
Double Row ◽  
Single Row ◽  
Randomized Block Design

An experiment was conducted to compare the traditional sorghum sowing method (single row) with double row method in the spring of 1992 under irrigation conditions in Rio Bravo, Tamaulipas, Mexico. A Complete Randomized Block design with a 2 x 5 factorial distribution was used with six replications; where the factors were: sowing method (doble and single row) and population density (187, 256, 342, 375 and 435 thousand plants/hectare). The hybrid Pioneer 8244 was used and planted at 0.80 m between rows. The parameters evaluated were plant height, panicle excertion, panic1e lenght and weight, grain number and moisture, weight of a thousand grains, grain yield and plant mortality. Mean separations were run using the Duncan's test. The grain yield and number per panicle were higher in double row method than in single row by 7.5 and 18.9 %, respectively; while grain weight and plant height showed higher values in single row than doble row. On the other hand, the weight and panic1e length decreased when population density increased in both methods, while panic1e excertion and plant mortality increased.

scholarly journals Effect of Planting Dates on the Performance of Promising Pigeonpea Genotypes under NEHZ

2020 ◽  
Vol 7 (1) ◽  
pp. 006-008
Author(s):  
Lowrence Kithan ◽  
◽  
Malini B. Sharma ◽  
Akumla Longchar ◽  
◽  
...  
Keyword(s):  
Field Experiment ◽  
Grain Yield ◽  
Plant Height ◽  
Growth Parameters ◽  
Block Design ◽  
Planting Dates ◽  
Factor B ◽  
Yield Parameters ◽  
Randomized Block Design ◽  
Number Of Branches

A field experiment was conducted during Kharif season of 2017 at All India Coordinated Research Project (AICRP) on pigeonpea experimental farm at School of Agricultural Sciences and Rural Development (SASRD), Nagaland University, Medziphema Campus. The objective of the study was to investigate the effect of different dates on performance of some improved pigeonpea varieties. The experiment comprised of three planting dates (1st June, 15th June and 1st July) as factor A and three pigeonpea varieties (UPAS 120, MANAK and PARAS) as factor B. The experiment was laid out in factorial randomized block design (FRBD) with three replications. Among growth parameters, maximum plant height (163.2 cm) and number of branches (15.8) were recorded with variety UPAS 120 at first date of sowing (1st June). Among yield parameters, maximum number of pods per plant (114.9) and maximum grain yield (982.2 Kg ha-1) were recorded at first date of sowing (1st June) and with variety UPAS 120 (113.8 and 968.8 Kg ha-1).

scholarly journals Performance of different rice hybrids in Krishna western delta

2020 ◽  
Vol 15 (3) ◽  
pp. 249-251
Author(s):  
K. Anny Mrudhula ◽  
B. Krishna Veni
Keyword(s):  
Field Experiment ◽  
Grain Yield ◽  
Plant Height ◽  
Yield Components ◽  
Growth Parameters ◽  
Block Design ◽  
Research Unit ◽  
Panicle Length ◽  
Straw Yield ◽  
Randomized Block Design

A field experiment was conducted at Rice Research Unit, Bapatla during Kharif, 2013 to observe the performance of hybrids under Krishna Western Delta. The experiment was laid out in Randomized Block Design with four replications. The treatments are 5 rice hybrids like DRRH2, DRRH3, KRH2, PA6201 and CRHR32. The results of study revealed that the hybrids exhibited superiority in respect of different growth parameters like plant height, number of tillers per hill, panicle length grain yield and straw yield. Among various tested rice hybrids, maximum grain yield (6408 kg/ha) and straw yield (7178 kg/ha) were recorded in PA6201 which might be due to better growth parameters and yield components of hybrids.

Sign in / Sign up

Export Citation Format

Share Document