Editorial

1999 ◽  
Vol 50 (7) ◽  
pp. I
Author(s):  
Jenny Fegent
Keyword(s):  
Linear Relationship ◽  
Leaf Area ◽  
Yield Components ◽  
Oil Content ◽  
Oil Industry ◽  
Growth And Yield ◽  
Peppermint Oil ◽  
North Eastern ◽  
The Impact ◽  
Negative Linear Relationship

The peppermint cultivar Todd's Mitcham forms the basis of a newly established peppermint oil industry in north-eastern Victoria. In this study the effects of Puccinia menthae on growth and yield components of Todd's Mitcham peppermint grown in pots were investigated. Rust infection significantly (P<0.05) reduced oil content, stolon number, leaf area, and root, stem, and leaf weights per plant, and increased defoliation by 67%. There was a negative linear relationship between oil yield and level of defoliation. Relationships between the amount of disease, measured as incidence and severity, and levels of defoliation were linear and logarithmic, respectively. The impact of disease on various components of growth and yield is discussed.

Effects of Puccinia menthae on growth and yield of Todd's Mitcham peppermint (Mentha x piperita)

1999 ◽  
Vol 50 (7) ◽  
pp. 1273 ◽  
Author(s):  
J. Edwards ◽  
D. G. Parbery ◽  
P. A. Taylor ◽  
G. M. Halloran
Keyword(s):  
Linear Relationship ◽  
Yield Components ◽  
Oil Content ◽  
Oil Industry ◽  
Growth And Yield ◽  
Peppermint Oil ◽  
Mentha X Piperita ◽  
North Eastern ◽  
The Impact ◽  
Negative Linear Relationship

The peppermint cultivar Todd's Mitcham forms the basis of a newly established peppermint oil industry in north-eastern Victoria. In this study the effects of Puccinia menthae on growth and yield components of Todd's Mitcham peppermint grown in pots were investigated. Rust infection significantly (P<0.05) reduced oil content, stolon number, leaf area, and root, stem, and leaf weights per plant, and increased defoliation by 67%. There was a negative linear relationship between oil yield and level of defoliation. Relationships between the amount of disease, measured as incidence and severity, and levels of defoliation were linear and logarithmic, respectively. The impact of disease on various components of growth and yield is discussed.

scholarly journals Pengaruh Magnesium, Boron, dan Pupuk Hayati terhadap Produktivitas Cabai serta Serangan Hama dan Penyakit (Effect of Magnesium, Boron, and Biofertilizers on Chili Pepper Productivity and Impact of Pests and Diseases)

2020 ◽  
Vol 30 (1) ◽  
pp. 65
Author(s):  
Wiwin Setiawati ◽  
Ahsol Hasyim ◽  
Bagus Kukuh Udiarto ◽  
Abdi Hudayya
Keyword(s):  
Yield Components ◽  
Growth Parameters ◽  
Block Design ◽  
Fruit Weight ◽  
Chili Pepper ◽  
Growth And Yield ◽  
Vegetable Crops ◽  
Positive Interaction ◽  
Pests And Diseases ◽  
The Impact

<p>Penggunaan pupuk hayati dan unsur hara makro sekunder seperti magnesium (Mg) dan hara mikro boron (B) diketahui dapat meningkatkan pertumbuhan, kualitas hasil tanaman, meningkatkan unsur hara dalam tanah serta mampu meningkatkan ketahanan tanaman terhadap serangan hama dan penyakit. Selain itu penggunaan pupuk tersebut dapat mengurangi kebutuhan terhadap pupuk kimia sintetis. Tujuan penelitian adalah mengetahui pengaruh aplikasi Mg, B, dan kombinasinya dengan pupuk hayati terhadap pertumbuhan dan hasil panen serta penekanan serangan hama dan penyakit. Penelitian dilakukan di Kebun Percobaan Balai Penelitian Tanaman Sayuran, Lembang, Jawa Barat (1.250 m dpl.) dari bulan Juni 2018 sampai bulan Februari 2019. Rancangan percobaan yang digunakan adalah Rancangan Acak Kelompok terdiri atas delapan perlakuan dan empat ulangan. Perlakuan yang diuji adalah aplikasi Mg, B, dan kombinasi dengan pupuk hayati serta teknologi konvensional sebagai pembanding. Pengamatan dilakukan terhadap pertumbuhan tanaman (tinggi tanaman dan luas kanopi), komponen hasil dan hasil serta serangan hama dan penyakit penting yang menyerang tanaman cabai. Hasil penelitian menunjukkan bahwa kombinasi Mg, B, dan pupuk hayati yang diaplikasikan sebanyak dua kali pada umur 30 HST dan 45 HST mampu meningkatkan produktivitas cabai sebesar 21,68 ton/ha atau meningkat sebesar 54,53% dibandingkan dengan kontrol. Peningkatan produktivitas cabai terjadi karena adanya perbaikan dalam komponen hasil seperti jumlah bunga, jumlah buah, panjang, dan bobot buah serta adanya penekanan terhadap serangan hama dan penyakit seperti trips, antraknosa, lalat buah, dan penggerek buah sebesar 18,10% sampai 23,93%.</p><p><strong>Keywords</strong></p><p><em>Capsicum annuum</em>; Unsur hara makro; Pupuk hayati; Produktivitas; Organisme pengganggu tumbuhan</p><p><strong>Abstract</strong></p><p>The use of biofertilizer and macro and micro nutrients enhanced the growth and development, yield quality of vegetable crops as well as nutrient status of soil to a greater extent and to increased on pests and diseases resistance. Organic sources of nutrients including biofertilizers also economize the use of chemical fertilizers. The objectives of this study were to determine the best combination of Mg, B, and biofertilizer that increase the growth and yield of chili pepper and the impact to pest and diseases on chili pepper. The field experiment was conducted at the experimental field of the Indonesian Vegetable Research Institute, Lembang, West Java from June 2018 to February 2019. The experiment was arranged in a Randomized Block Design with eight treatments and four replicated. The treatments were Mg, B, and their combinations with biofertilizer compared to the conventional technologies as a control. The observations were carried out on the growth parameters (plant height and leaf canopy), yield components, pest and diseases of chili pepper. The results showed that the combinations of Mg, B, and biofertilizer increased the yield of chili up to 21.68 ton/ha or positive interaction beside beneficial agent with Mg, B, and biofertilizer package on 54.53%. Increased productivity of chili occurs because of improvements in yield components such as the number of flowers, number of fruits, fruit length and fruit weight and reduction of pest and disease attacks such as thrips, anthracnose, fruit flies and, fruit borers by 18.10% to 23.93%.</p>

scholarly journals Effect of Cowpea severe mosaic virus on Crop Growth Characteristics and Yield of Cowpea

Plant Disease ◽  
2005 ◽  
Vol 89 (5) ◽  
pp. 515-520 ◽  
Author(s):  
H. M. Booker ◽  
P. Umaharan ◽  
C. R. McDavid
Keyword(s):  
Mosaic Virus ◽  
Leaf Area ◽  
Growth Phase ◽  
Field Experiments ◽  
Yield Loss ◽  
Crop Growth ◽  
Growth And Yield ◽  
Exponential Growth Phase ◽  
Area Index ◽  
The Impact

Field experiments were carried out in St. Augustine, Trinidad & Tobago, West Indies to determine the effects of time of inoculation of Cowpea severe mosaic virus (CPSMV) and cultivar on crop growth and yield in cowpea (Vigna unguiculata). Crop growth and yield loss were investigated through growth analysis and yield component analysis on three cultivars in two seasons (wet and dry). Time of inoculation had the most profound impact on yield. Inoculations during the early log phase (seedling stage), 12 days after seeding (DAS), consistently had the greatest impact (50 to 85% yield loss) compared with those inoculated during the exponential growth phase (24 DAS; 22 to 66% yield loss) or linear growth phase (35 DAS; 2 to 36% yield loss). The effects were particularly pronounced in the dry season and in the more determinate cultivar, H8-8-27. Reduction in maximum leaf area index, leaf area duration, or maximum vegetative dry matter explained reductions in yield. Yield reductions resulted primarily from reduced pod number per plant and, to a lesser extent, from reduced average pod dry weight. The results show that CPSMV control measures should be aimed at delaying infection by CPSMV to minimize the impact on cowpea yield.

scholarly journals EVALUASI PERTUMBUHAN DAN DAYA HASIL BERBAGAI KLON NILAM ASAL KULTUR JARINGAN

2020 ◽  
Vol 8 (4) ◽  
pp. 117
Author(s):  
. HOBIR ◽  
DELIAH SESWITA
Keyword(s):  
Tissue Culture ◽  
Yield Components ◽  
Oil Content ◽  
Morphological Characteristics ◽  
Morphological Characters ◽  
Yield Component ◽  
Growth And Yield ◽  
Pogostemon Cablin ◽  
Gamma Irradiated ◽  
Herb Yield

<p>Pertumbuhan dan daya hasil dari berbagai klom nilam dievatuasi di KP. Cimanggu (Bogor) dari tahun 1999 - 2000. Dua puluh dua klon nilam yang berasal dai kultur kalus yang diradiasi dengan sinar gamma, 1 klon kontrol (asal kultur mata tunas) serta 3 klon pembanding (Klon TT, Sdk dan Crt) ditanam dengan jarak tanam 100 cm x 50 cm. Percobaan dirancang secara acak kelompok dengan 3 ulangan. Luas petak adalah 10 m2 yang memuat 20 tanaman. Parameter yang digunakan adalah sifat- sifat morfologi, yang meliputi tinggi tanaman, diameter batang, jumlah dan panjang cabang, jumlah daun per cabang, panjang dan lebar daun serta komponen hasil, yang meliputi berat tanaman, berat tcrsuling (segar dan kering) dan kadar minyak. Hasil penelitian menunjukkan bahwa berdasarkan sifat-sifat morfologi dan komponen hasil terdapat 4 klon yang mcnonjol. yaitu 3 klon hasil kultur jaingan (klon lb, 2b, dan 75) dengan hasil tema kering masing-masing 0.222; 0.222; dan 0. 216 kg/tanaman dan kadar minyak masing-masing 4.28; 4.00; dan 4.54%, serta satu klon konvensional (Ct) dengan hasil tema keing 0.469 dan kadar minyak 4.84%.</p><p>Kata kunci: Pogostemon cablin, nilam, klon, kultur jaringan</p><p> </p><p><strong>ABSTRACT </strong></p><p><strong>Evaluation on the growth and yield potency of different clones ofpatchoulifrom tissue culture</strong></p><p>The growth and yield potency of different patchouli developed from tissue culture were studied at the Cimanggu Experimental Garden from 1999 to 2000. The materials were twenty-two clones of patchouli raised rom the gamma irradiated calli, 1 control clone (raised rom tissue culture propagated plant from which the irradiated calli were derived) and 3 conventionally propagated clones (Crt, TT and Sdk). The planting mateials were planted in a plant spacing of 100 cm x 50 cm. The experiment was designed as a randomaized block in 3 replicates. Plot size was 10 m2, accommodated 20 plants. Parameters used for evaluating the clones were morphological characters and yield components. The morphological characters included plant height, stem diameter number of branches, number of leaves per branch and size of leaves, while the yield component included weight of whole plant, distilled herbs (fresh and dry herbs) and oil content. Based on die morphological characteristics and yield components, 4 clones showed their superioity. The four clones were lb, 2b, and 75 (raised from tissue culture) with a herb yield of 0.222; 0.222 and 0216 kg/plant and an oil content of 4.28, 4.00 and 4.84% respectively, and Ct ( from convetional clone) with a herb yield of 0.469 kg/plant and an oil content of 4.84%.</p><p>Key words : Pogostemon cablin, nilam, clones, tissue culture</p>

scholarly journals Evaluating the Impact of Transplanting Depth on Bell Pepper Growth and Yield

HortScience ◽  
1994 ◽  
Vol 29 (10) ◽  
pp. 1133-1135 ◽  
Author(s):  
Charles S. Vavrina ◽  
Kenneth D. Shuler ◽  
Phyllis R. Gilreath
Keyword(s):  
Soil Temperature ◽  
Leaf Area ◽  
Bell Pepper ◽  
Growth And Yield ◽  
Plant Weight ◽  
Stand Establishment ◽  
Competitive Edge ◽  
Number Of Leaves ◽  
The Impact ◽  
Pepper Plants

`Jupiter' and `Verdel' bell pepper (Capsicum annuum L.) transplants set to the depth of cotyledon leaves or to the first true leaf yielded more fruit than transplants set to the top of the rootball. Increased yields and early stand establishment criteria (number of leaves, leaf area, plant weight, and plant height) suggest that planting pepper transplants deeper than is now common is commercially beneficial in Florida. Deeper plantings may place pepper roots in a cooler environment and reduce fluctuations in soil temperature. Moderated soil temperature, in conjunction with earlier fertilizer and water acquisition, may give deeper-planted pepper plants a competitive edge in growth.

scholarly journals The EFFICACY OF DUAL GOLD (S-METOLACHLOR) ON WEED BIOMASS (g m-2) AND ON THE GROWTH AND YIELD COMPONENTS OF SUGAR BEET (BETA VULGARIS L.) CV. CALIFORNIA-KWS

2021 ◽  
Vol 27 (4) ◽  
pp. 495-504
Author(s):  
Imran Khan ◽  
Muhammad Iqbal ◽  
Malik Muhammad Hashim ◽  
Muhammad Saleem Jilani ◽  
Mohammad Safdar Baloch ◽  
...  
Keyword(s):  
Sugar Beet ◽  
Leaf Area ◽  
Beta Vulgaris ◽  
Yield Components ◽  
Growth And Yield ◽  
Root Weight ◽  
Weed Biomass ◽  
Weed Infestation ◽  
Number Of Leaves

Weed infestation is a major problem and matter of concern as it reduces yield as well as quality of many crops including sugar beet. Manual weeding is very tedious, costly, time consuming and most probably non-availability of trained and skillful labor is another issue. Keeping in view these facts, an experiment was performed to evaluate the efficacy of dual gold on the weed biomass (gm-2) and on the growth and yield components of sugar beet (Beta vulgaris L.) cv. California-KWS during 2013-14 and 2014-15. The study was performed using RCBD having five treatments and three replications. The treatments included different application times (pre-emergence application and application after 15, 30 and 45 days after emergence) of dual gold (s-Metolachlor) and a control (weedy check). Data were recorded on fresh and dry weed biomasses (g m-2), number of leaves plant-1, leaf area plant-1 (cm2), leaf and root weights plant-1 (g), sucrose%, TSS%, root and sugar yields (t ha-1). The results showed significant variation among the treatments for all parameters during both years of study. Among the treatments the dual gold (s-Metolachlor) applied as pre-emergence reduced weed fresh and dry biomasses (g m-2) and also enhanced number of leaves plant-1, leaf area (cm2), leaf and root weight plant-1, sucrose%, TSS%, root and sugar yields (t ha-1) during both years. Hence it is concluded that dual gold (s-Metolachlor) applied as pre-emergence is best for eradicating weeds at early stages of growth and hence improving yield and quality of sugar beet under Dera Ismail Khan Conditions.

scholarly journals GROUNDNUT GROWTH AND YIELD RESPONSES TO CALCIUM AND PHOSPHOROUS FERTILIZATION

2021 ◽  
Vol 9 (4) ◽  
pp. 688-693
Author(s):  
Razan Malla ◽  
◽  
Saraswoti Kandel ◽  
Bisheswar Prasasd Yadav ◽  
Santosh Rasaily ◽  
...  
Keyword(s):  
Yield Components ◽  
Fertilizer Application ◽  
Growth And Yield ◽  
Pod Yield ◽  
Arachis Hypogaea L ◽  
Production Quantity ◽  
The Mean ◽  
Yield Responses ◽  
The Impact ◽  
Better Than

An experiment was conducted in factorial design with three replications in Nawalpur, Sarlahi, Nepal in 2018 and 2019 to investigate the impact of calcium and phosphorous application on yield and yield components of groundnut (Arachis hypogaea L.). Baidehi variety of groundnut was used. Calcium concentrations in three levels (0, 110, and 165 kg ha-1 from Gypsum) and phosphorous rates in three levels (0, 25, and 50 kg ha-1 from SSP) were used in this study. The application of calcium had a major impact on pod production, quantity of filled pods, and hundred seed weight, with 165 kg ha-1 calcium from gypsum performing significantly better than the others. The highest pod yield (2006 and 2477 kg ha-1) was obtained from calcium 165 kg ha-1 in 2018 and 2019 respectively. Calcium application (165 kg ha-1) increased the mean pod yield by 24% compared to the control. Control plots resulted in more than 13% empty pods (pops) compared to when applied with 165 kg Ca ha-1. Phosphorus was rich in the inherent soil leading to no significant effect on the yield components. According to the findings of this research, efficient fertilizer application, especially calcium and phosphorus, is critical for groundnut nutrition and pod filling.

Effects of different concentrations of atmospheric CO2on growth and yield components of wheat

1981 ◽  
Vol 97 (2) ◽  
pp. 335-339 ◽  
Author(s):  
N. Sionit ◽  
B. R. Strain ◽  
H. Hellmers
Keyword(s):  
Leaf Area ◽  
Yield Components ◽  
Ecological Impact ◽  
Weight Ratio ◽  
Co2 Enrichment ◽  
Dry Weight ◽  
Plant Size ◽  
Growth And Yield ◽  
Root Shoot Ratio ◽  
Net Assimilation

SummaryGrowth and yield components of a semi-dwarf spring wheat (Triticum aestivumL., cv. GWO 1809) were determined under three different atmospheric CO2a concentrations (350, 675 and 1000 μ1/1) in controlled environment chambers of the Duke University Phytotron. CO2 enrichment enhanced tiller and head emergence and increased the number of head-producing tillers and the total dry weight of the plants. Total leaf area, stem height and root/shoot ratio of the plants were greater at high CO2concentrations than at low. Net assimilation rate (NAR) increased with increasing CO2concentration and decreased with plant size. There was little effect of CO2enrichment on leaf weight ratio (LWR) and leaf area ratio (LAR) and no significant effect on specific leaf area (SLA). The weight and number of seeds were significantly higher with increasing CO2concentration. The results of this study provide evidence that important changes in plant growth and development may occur during the next century if global CO2enrichment continues. Some of these changes would have important ecological impact in natural and managed ecosystems in the future.

scholarly journals EFFECTS OF DIFFERENT RATES OF ORGANIC AND INORGANINC FERTILIZER ON GROWTH AND YIELD COMPONENTS OF POTATO (SOLANUM TUBEROSUM L.) IN JIMMA ARE, SOUTH WEST ETHIOPIA

2016 ◽  
Vol 4 (11) ◽  
pp. 115-121
Author(s):  
Amana Mama ◽  
Jemal Jeylan ◽  
AbebeWoldesenbet Aseffa
Keyword(s):  
Leaf Area ◽  
Plant Height ◽  
Yield Components ◽  
Farmyard Manure ◽  
Leaf Length ◽  
Stem Diameter ◽  
Growth And Yield ◽  
Leaf Number ◽  
Stem Number ◽  
Potato Leaf

The experiment was conducted under field condition at Jimma University College of Agricultures and Veterinary Medicine (JUCAVM) to determine the Effects of Different Rate of Organic and Inorganic Fertilizer on Growth and yield Components of Potato (Solanum tuberosumL).The experiment design used was randomized complete block design(RCBD). The experimental treatments were replicated three times. A Potato cultivar ‘Jalene’ was grown combined with Farmyard manure and nitrogen (F0N0), (F20N70), (F0N35),(F0N70), (F20N35), (F20N0) as a treatment.. Data were recorded on Potato leaf area, plant height, leaf length, leaf number, leaf diameter, stem diameter and stem number. The result revealed that the combination of various level of Farmyard manure and nitrogen statistically (p≤0.05) affected leaf area, plant height, leaf length, leaf number, leaf diameter, stem diameter and stem number. The maximum values for leaf area, plant height, leaf length, leaf number, leaf diameter, stem diameter and stem number were recorded from (F0N70, F20N70, F0N70, F20N35, F20N0, F20N70, F20N0) respectively .However The minimum values of all the parameters were recorded from the control treatment (F0 N0). From the study it could be concluded that Potato yield components were greatly affected by different rates of organic and inorganic fertilizers. The appropriate amount of different rates of fertilizers (farmyard manure and nitrogen) should be used to increase Potato growth and yield.

scholarly journals Phosphorus and Zinc Interaction Influence Leaf Area Index in Fine vs. Coarse Rice (Oryza sativa L) Genotypes in Northwest Pakistan

2016 ◽  
Vol 2 ◽  
Author(s):  
Amanullah , ◽  
Inamullah , ◽  
Zahir Shah ◽  
Shad Khan Khalil
Keyword(s):  
Oryza Sativa ◽  
Leaf Area Index ◽  
Leaf Area ◽  
Growth And Yield ◽  
Growth Stages ◽  
Area Index ◽  
Physiological Maturity ◽  
Rice Genotypes ◽  
The Impact ◽  
Different Growth Stages

Leaf area index (LAI) is a measure of leafiness per unit ground area and denotes the extent of photosynthetic machinery is an important growth and yield-determining factor because it is a major determinant of light interception and transpiration. Phosphorus (P) and zinc (Zn) and rate are the most important factors affecting leaf area index (LAI) of rice(<em>Oryza sativa</em> L.). A field experiment was conducted to assess the impact of phosphorus (0, 40, 80, 120 kg P ha<sup>-1</sup>) and zinc levels (0, 5, 10, 15 kg Zn ha<sup>-1</sup>) on LAI of rice (<em>Oryza sativa</em> L.) genotypes [fine (Basmati-385) and coarse (Fakhr-e-Malakand &amp; Pukhraj)]. The experiment was conducted on farmer field at Batkhela, Malakadnd in Northwest Pakistan during summer 2011 and 2012. When combined over the two years, the data revealed that the highest LAI at three different growth stages (tillering, heading and physiological maturity) was obtained with application of the highest P level (120 kg ha<sup>-1</sup>) being at par with 80 kg P ha<sup>-1</sup>, while the lowest LAI was recorded when P was not applied. Similarly, the highest LAI was obtained with application of the two higher Zn levels (10 and 15 kg Zn ha<sup>-1</sup>), while the lowest LAI was recorded when Zn was not applied. In case of rice genotypes, the highest LAI was obtained from Pukhraj than other two genotypes at all growth stages. The other two rice genotypes (Fakher-e-Malakand and Basmati-385) produced statistically similar LAI at different growth stages. The higher LAI of Pukhraj was attributed to its long and wider leaves that resulted in higher mean single leaf area, leaf area per tiller, per hill and per square meter. The LAI was highest at heading stages than at early (tillering) and later (physiological maturity) growth stages. The increase in LAI was attributed to the increase in tillers number and leaf area hill<sup>-1</sup>. The increase in LAI showed positive impact on crop growth rate, dry matter accumulationand yield. Application of 120 kg P + 10 kg Zn ha<sup>-1</sup> to rice genotype Pukhraj was more beneficial in terms of higher LAI and productivity in the study area.

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