scholarly journals Bio-intensive integrated control of tungro disease in the rice field

2021 ◽  
Vol 306 ◽  
pp. 01050
Author(s):  
Nur Rosida ◽  
Ani Mugiasih ◽  
Ahmad Muliadi
Keyword(s):  
Population Density ◽  
Grain Yield ◽  
Rice Field ◽  
Integrated Control ◽  
The Other ◽  
Green Leafhopper ◽  
Resistant Varieties ◽  
Main Plot ◽  
Intensive Control ◽  
Plot Design

This research aims to gain the technology of bio-intensive integrated control of tungro. The experiments were done in a split-plot design with three replications. The main plot consisted of Bio-intensive integrated control, compared to Conventional control. The subplots are: 1) the susceptible varieties (TN1), 2) green leafhopper–resistant varieties (IR64), and 3) tungro resistant varieties (Inpari 9 Elo). The subplots are 10 m x 10 m, and every subplot is replicated three times. Variables observed were the population density of green leafhopper (GLH) and the predators, the percentage of tungro incidence, and the grain yield. The results showed that the population of GLH in the plots of bio-intensive integrated control (27.32, 2.34, 4.83, and 5.16) was lower than the population of GLH in conventional control (34.00, 21.17, 7.84, and 6.50). The GLH population density tends to be higher in varieties TN1 than the other varieties both in bio-intensive and conventional control. It is found that 12 species of predator exist in all varieties of bio-intensive control and conventional plots. At 8 WAT the infection of RTV on all varieties in bio-intensive plot control is lower (0.67 - 2.67%) than the incidence of tungro in conventional plot control (3.00 - 8.67%).

scholarly journals TUNGRO DISEASE CONTROL THROUGH THE ELIMINATION VECTOR ROLE OF GREEN LEAF HOPPER WITH ENVIRONMENT FRIENDLY CONTROL

Agric ◽  
2017 ◽  
Vol 29 (2) ◽  
pp. 77-88
Author(s):  
Dini Yuliani ◽  
I Nyoman Widiarta
Keyword(s):  
Population Density ◽  
Integrated Control ◽  
Wet Season ◽  
Multiple Components ◽  
Resistant Varieties ◽  
Main Plot ◽  
Control Application ◽  
Disease Epidemics ◽  
And Control

Green leafhopper (GLH)plays an important role in tungro disease epidemics. Reduce the activity of GLHsuckasvectorsof tungro virus was effective to limit transmission of the virus. Integrated control of tungro disease may involve multiple components at once including using sambilata with entomopathogenicfungus Metarhiziumanisopliae. This research was conducted to determine the effect of sambilata and M.anisopliaein controlling the GLH as tungro virus vectors. The experiment was conducted in tungro endemic areas in Tanjungsiang,Subang District at dry season 2013 and wet season 2013/2014. Experiments using split plot design with four replications. The main plot was consists of GLH resistant varieties(IR66), tungro resistant varieties (Inpari 9), and check varieties(Ciherang). The subplots were M.anisopliae applications, sambilata, and control. Application was done on rice plant age 14, 28 and 42 days after planting (DAP).The results showed that the intensity of tungro on Ciherang showed the highest intensity compared toIR66 and Inpari9. Effect of entomopathogenic fungus M.anisopliae application to tungro disease showed a lower intensity compared with sambilata extracts and control. The intensity of tungro disease in farmers’ fields as a comparison of experiment was high enough on average between 1 until 69%. In general, the density of GLH population began to increase on the observation of 14 to 28 DAP. GLH population density was highest at 28 DAP. However, the population density of GLH decreased at 42 until 56 DAP.

scholarly journals Understanding Farmer and Government Measure in Rat Pests Control in Rice Fields

2021 ◽  
Vol 2 (2) ◽  
pp. 24-30
Author(s):  
Thuy Xuan ◽  
Tiuen Yen ◽  
Tuyet Caugh
Keyword(s):  
Population Density ◽  
Rice Field ◽  
Growing Season ◽  
Rice Paddy ◽  
The Other ◽  
Cropping Pattern ◽  
Population Peak ◽  
Government Measure ◽  
Intensive Control ◽  
Rice Growing Season

This paper discusses the control of rat pets through highlighting its population growth, ecosystem, types and possible mechanism to use. During extended periods of fallow, rice field rats tend to congregate in escape places (refuge regions) such as bushes, yards, or rice warehouses. Rice plants suffered damage equivalent to five times their feeding requirements when rats were present. Rats damage plants from the tiller stage to the maximal tiller stages by devouring the growth point and the soft base of the stem while leaving the other portions of the plant unharmed. Without intensive control efforts (since the start of MT1), the rat population density on MT2 is confirmed to be higher and poses a serious threat to the success of MT2 harvesting. In one rice growing season, there is one population peak so in the rice-paddy-fallow cropping pattern there are two (2) population peaks.

scholarly journals Performance of Wheat as Affected by Different Irrigation Levels and Sowing Dates

2017 ◽  
Vol 14 (2) ◽  
pp. 77-85
Author(s):  
Md Sohel Mahmud ◽  
Md Jafar Ullah ◽  
Md Abdullahil Baque ◽  
Lutfun Naher ◽  
Sayed Mohammad Mohsin
Keyword(s):  
Grain Yield ◽  
Maximum Yield ◽  
Growth And Yield ◽  
Sowing Time ◽  
Sowing Dates ◽  
Two Factors ◽  
Main Plot ◽  
Irrigation Levels ◽  
1000 Grain Weight ◽  
Plot Design

The experiment was conducted to determine the effect of irrigations and sowing dates on growth and yield performance of wheat in the experimental field of Sher-e-Bangla Agricultural University, Dhaka, Bangladesh during the period of November 18, 2012 to March 30, 2013. The experiment was comprised of two factors, viz. factor A: two irrigations namely irrigation (I) and no irrigation i.e. control (I0), and factor B: three sowing dates such as S1: 1st sowing on 18 November, S2: 2nd sowing on 03 December and S3: 3rd sowing on 18 December. The experiment was laid out in a split plot design with three replications. Irrigation was assigned in the main plot, while sowing time was in the sub-plots. Data on grain yield and different yield contributing characters were taken after harvest. Results indicated that the highest grain yield was obtained with I (2.915 t ha-1) and S1 (2.983 t ha-1). The interaction of irrigation (I) and sowing on 18 November (S1) showed the maximum yield (3.387t ha-1), spike length (17.08 cm), 1000 grain weight (43.4 g), spikelets spike-1 (20.03) and grain spike-1 (65.58) of wheat.The Agriculturists 2016; 14(2) 77-85

scholarly journals Studies on Potential of Different Dates of Sowing and Varieties on Productivity of Aerobic Rice in Assam

2020 ◽  
pp. 557-565
Author(s):  
Bidisha Borah ◽  
Kalyan Pathak
Keyword(s):  
Grain Yield ◽  
Rice Variety ◽  
Canopy Temperature ◽  
Index Number ◽  
Dry Matter Accumulation ◽  
Rice Varieties ◽  
Area Index ◽  
Main Plot ◽  
Positive Effect ◽  
Plot Design

An investigation was carried out to determine an optimum micro-climate regimes for different promising varieties of rice for realizing higher yields under aerobic conditions. A field experiment was conducted in the Instructional Cum Research (ICR) Farm of Assam Agricultural University, Jorhat, Assam during autumn season of 2017. The experiment was laid out in a split-plot design with three replications. The treatments consisted of four micro-climatic regimes (M) in main plot viz., sowing of seed on 15th February (M1), 1st March (M2), 16th March (M3) and 1st April (M4) along with four different rice varieties (V) viz., CR-Dhan 205 (V1), CR-Dhan 203 (V2), CR-Dhan 204 (V3) and Inglongkiri (V4) in sub plot. The results of the experiment revealed that among the different micro-climatic regimes, the micro-climate associated with 1st April recorded positive effect on micro-climate related and yield parameters in terms of canopy temperature, light intensity, soil moister content, soil temperature, dry matter accumulation, leaf area index, number of effective tillers and grain yield (3004 kg/ha), followed by the micro-climate associated with 16th March sown crop. Among the varieties evaluated, CR-Dhan 203 recorded the highest value in terms of number of effective tillers (187/m2) followed by Inglongkiri, CR-Dhan 204 and CR-Dhan 205. The highest grain yield of 2860 kg/ha recorded in rice variety CR-Dhan 203 was significantly superior to that of other varieties except Inglongkiri. In terms of economics, the crop sown on 1st April recorded the highest net return (INR 51755 /ha) and B:C ratio (2.30) which was found to be the greatest.

Response of rice varieties to different sowing windows under Konkan conditions

2017 ◽  
Author(s):  
D. N. Jagtap ◽  
U. V. Mahadkar ◽  
S. A. Chavan
Keyword(s):  
Field Experiment ◽  
Grain Yield ◽  
Rice Variety ◽  
Rice Crop ◽  
Economic Returns ◽  
Rice Varieties ◽  
Straw Yield ◽  
Long Duration ◽  
Main Plot ◽  
Plot Design

A field experiment was conducted during kharif season 2015-16 to study the response of rice varieties to different sowing windows under Konkan conditions. The experiment was laid out in split plot design with three replications. The main plot treatments were three sowing windows, viz., 23rd Met Week, 24th Met Week, 25thMet Week. The sub plot treatments comprised five rice varietiesviz., Karjat-5, Palghar-1, Jaya, Swarna and Karjat-2. Thus there were 45 treatment combinations. Results revealed that rice crop sown on 23rd Met. Week recorded significantly higher grain yield (5782 kg ha-1) and straw yield (6462 kg ha-1). Long duration rice variety Swarna recorded the maximum grain yield (5782 kg ha-1) as well as straw yield (6462 kg ha-1), which was significantly higher over all other varieties under study except variety Jaya which was at par. From the present investigation it can be concluded that kharif rice in Konkan be sown during 23rd meteorological week with rice variety Swarna followed by conventional variety Jaya, so as to obtain higher yield and economic returns

scholarly journals PENGARUH PENAMBAHAN PUPUK MIKRO DAN BEBERAPA GENOTIPE SORGUM (Sorghum bicolor (L.) Moench) TERHADAP INTENSITAS PENYAKIT ANTRAKNOSA (Colletotrichum sp.) DI LAHAN PETANI TANJUNG BINTANG LAMPUNG SELATAN

2020 ◽  
Vol 8 (2) ◽  
pp. 347
Author(s):  
Farastika Unjunan Muli ◽  
Efri Efri ◽  
Muhammad Syamsoel Hadi ◽  
Radix Suharjo
Keyword(s):  
Sorghum Bicolor ◽  
Block Design ◽  
Plant Diseases ◽  
The Other ◽  
Anthracnose Disease ◽  
Randomized Block Design ◽  
Main Plot ◽  
Sorghum Genotypes ◽  
Sorghum Bicolor L ◽  
Plot Design

One of the diseases that often found in sorghum plants is anthracnose disease caused by Colletotrichum sp. The purposed of this study was to determine the effect of adding micro fertilizer and the use of several sorghum genotypes on the intensity of anthracnose disease. The study was conducted in Sukanegara, Tanjung Bintang, South Lampung in April 2017 - February 2018 and at the Laboratory of Plant Diseases and Pests, Faculty of Agriculture, University of Lampung. The treatments were arranged using a randomized block design in a split plot design (3 times replications), the main plot was micro nutrients (with micro addition and without micro addition) and 15 subgroups of sorghum genotypes (Numbu, Samurai 1, GH3, UPCA, GH4, P / I WHP, GH6, Super 2, GH13, P / F 51-93-C, Super 1, GH5, Mandau, GH7, and Talaga Bodas). The results showed that the addition of "ZincMicro" micro fertilizers to sorghum plants did not affect the intensity of anthracnose disease, however there were differences in the intensity of anthracnose diseases between sorghum genotypes. Numbu Genotype, GH 3, and GH 13 were relatively more resistant to anthracnose disease than the other genotypes.

scholarly journals Uji Multilokasi Sepuluh Galur Padi Untuk Menghasilkan Varietas Unggul Baru

2020 ◽  
Vol 18 (3) ◽  
pp. 175
Author(s):  
Jaenudin Kartahadimaja ◽  
Eka Erlinda Syuriani
Keyword(s):  
Grain Yield ◽  
Block Design ◽  
Yield Potential ◽  
High Yield ◽  
Rice Varieties ◽  
Randomized Complete Block Design ◽  
Soil Stress ◽  
Main Plot ◽  
Plot Design ◽  
High Yield Potential

Reduced productive rice fields to non-paddy fields, most possible extension of the nationalrice cultivation area to the suboptimal lands reaching ± 91.9 million ha. Technologypackages that can be applied include the use of new improved rice varieties through theassembling of varieties that have high yield potential, resistant to suboptimal soil stress. Theobjective of the research is to produce new superior rice varieties that are available invarious environments. The study used a split-plot design, as the main plot is an environmentconsisting of rice paddies and gogo, as a subplot is the genotype of rice. The treatment ineach environment is prepared using the Randomized Complete Block Design (RCBD). Thetreatment consisted of 10 new rice strains and four varieties as a comparison. Variablesobserved (1) plant height; (2) the maximum number of shoots; (3) number of productiveshoots; (4) long panicle; (5) the number of grains per panicle; (6) the amount of graincontent of each panicle; (7) the number of empty grains per panicle; (8) weight of 1000grains of grain; (9) grain yield of each clump; (10) grain yield per hectare. Data wereanalyzed by variance if there was a difference between mean, median treatment, followed byLsd test at 5% level. The adaptability and yield stability of each strain was determined basedon the value of the coefficient of diversity (KK) (Francis and Kenneberg, 1978) in Syukur etal., (2012). The results showed that seven new rice strains had adaptations both planted asupland rice and lowland rice, namely strains B3, B4, F2, F3, H1, H4, and L2.

Evaluation of sowing methods and nitrogen levels for grain yield and components of durum wheat under arid region of Egypt

2021 ◽  
Vol 26 (6) ◽  
pp. 3031-3039
Author(s):  
MOHAMED MOSALEM ◽  
YASER MAZROU ◽  
SHIMAA BADAWY ◽  
MOHAMED ABD EL-RAHMAN ABD ULLAH ◽  
MOHAMED GHONEIM MUBARAK ◽  
...  
Keyword(s):  
Grain Yield ◽  
Durum Wheat ◽  
Row Spacing ◽  
Nitrogen Levels ◽  
Loam Soil ◽  
Main Plot ◽  
1000 Grain Weight ◽  
N Fertilizer Rate ◽  
Plot Design ◽  
Private Farm

The present experiment was conducted at private farm during 2018/19 and 2019/20 seasons. The investigated area lies within the extremely arid belt, having long hot summer and short warm winter. The main goal of this investigation was to evaluate the effect of different sowing methods on yield components of wheat, using split plot design with three replications. Sowing methods in main plot were broadcasting method, row spacing 10, 15 and 20 cm apart). Nitrogen fertilizer levels in sub plot were 60, 75 and 90 kg N fed-1 (fed = 4200 m-2). The increase percentage due to row spacing at 20 cm apart (M4) compared to broadcasting method (M1) were (23.30 & 26.74%) for spike length; (5.11 & 6.94 %) for 1000 grain weight and (8.02 & 7.74%) for grain yield and according ally (3.07 & 3.08%) for harvest index in both seasons, respectively. Overall, from the present study the sowing method in rows with 20 cm apart and the optimum N fertilizer rate (90 kg fed-1) for durum wheat production in the soils of Qasir, Dakhala oasis on silt loam soil was the best treatment.

scholarly journals Subdoses of 2,4-D Choline Salt on Yield Components in Function of the Soybean Growth Stage

2019 ◽  
Vol 11 (13) ◽  
pp. 199 ◽  
Author(s):  
M. A. Rizzardi ◽  
T. Schneider ◽  
A. P. Rockenbach ◽  
S. T. Peruzzo ◽  
F. R. Lucio ◽  
...  
Keyword(s):  
Grain Yield ◽  
Yield Components ◽  
Growth Stage ◽  
Main Plot ◽  
Plot Design

Residues of herbicide tanks may cause damage to sensitive crops. The objective of this study is to evaluate the potential effects of subdoses of the herbicide 2,4-D choline salt on the vegetative and reproductive stages of soybean. The experiment was randomized blocks with a subdivided plot design and four replications. The application times were at V3 and R2 in the main plot. The herbicide 2,4-D choline salt was applied at the subdoses 0, 2.28, 4.56, 9.12, 18.24, 27.36 and 45.60 g a.e. ha-1 in the subplots. Phytotoxicity was evaluated at 3, 7 and 14 days after application (DAT) of treatments, soybean height at 14 and 28 DAT and at ripening, yield components at ripening, and grain yield. The phytotoxicity evaluation of 2,4-D choline salt evidenced that symptoms were only observed up to 14 days after application (DAT) of treatments. The 2,4-D did not affect any of the variables tested. Grain yield was not influenced by application times or subdoses.

scholarly journals Cara Tanam dan Pemupukan Tanaman Kacang Hijau di Lahan Kering Iklim Kering Sumba Timur, Nusa Tenggara Timur

2021 ◽  
Vol 26 (3) ◽  
pp. 406-412
Author(s):  
Sri Ayu Dwi Lestari ◽  
Sutrisno Sutrisno ◽  
Henny Kuntyastuti
Keyword(s):  
Grain Yield ◽  
Inorganic Fertilizer ◽  
Cropping Pattern ◽  
Cow Manure ◽  
Plant Spacing ◽  
Dry Land ◽  
Maize Variety ◽  
Different Types ◽  
Main Plot ◽  
Plot Design

The intercropping method is one way to maximize plants and soil's utilization in a dry land. This study aimed to determine the cultivation (cropping methods and fertilization) that could increase mungbean grain yield in dry land in the dry climate of East Sumba, East Nusa Tenggara Province. The experiment was conducted at dry land in a dry climate in Laipori Village, Pandawai District, East Sumba Regency in 2017. The experiment was laid out in a split-plot design with four replications. The main plot was a cropping pattern, namely (1) intercropping mungbean with maize. Mungbean plant spacing was 30 cm ´ 20 cm, two plants per hole, and maize plant spacing was (50 cm ´ 50 cm) ´ 120 cm, one plant/hole and (2) mungbean monoculture with a plant spacing of 40 cm ´ 10 cm, two plants/hole. The subplot was dosage and type of fertilizer, namely (1) 150 kg Phonska/ha, (2) 5000 kg cow manure/ha, and (3) 75 kg Phonska + 2500 kg cow manure/ha. The mungbean variety used was Vima 1, and the maize variety was Bima. The results showed that intercropping mungbean with maize could increase the yield of mungbean seeds yield by 0,28 t/ha (51,85%) and increase the mungbean biomass by 0,31 t/ha (22,30%) compared to the monoculture system. Different types and dosages of Phonska inorganic fertilizer and cow manure did not cause differences in the mungbean yield.  

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