scholarly journals Trials on the Timing of Chemical Control of Lentil weevil, Bruchus lentis Frӧlich (Coleoptera: Chrysomelidae: Bruchinae) in Lentil Field in Gachsaran Region (Iran)

2017 ◽  
Vol 49 (3) ◽  
Author(s):  
K. Saeidi ◽  
S. Mirfakhraie
Keyword(s):  
Chemical Control ◽  
Agricultural Research ◽  
Block Design ◽  
Early Flowering ◽  
Economic Losses ◽  
Research Station ◽  
Three Samples ◽  
Significant Difference ◽  
The Mean ◽  
Spray Treatment

The lentil weevil, Bruchus lentis Frӧlich, (Coleoptera: Chrysomelidae: Bruchinae) is the most serious pest of lentil in Iran. Economic losses due to this pest reach up to 40% of the lentil crop. Over a two-year study (2012 and 2013) in Agricultural Research Station of Gachsaran Region, best timing of chemical control of B. lentis was determined. A field experiment with cultivation of lentil Sina variety Lens culinaris Medik was conducted in a randomized complete block design with five treatments and three replications. The treatments consisted of spraying four times (respectively, during the early flowering, 10 days after the first spraying, 10 days after the second spraying; 10 days after the third spraying) and control (without spraying). For the spraying from Endosulfan insecticide EC50% at ratio one liter per hectare was used. Three samples were taken from the pods and totally 150 pods from each replicate for contaminations of seeds were investigated. After the determination of the percent of seeds contamination, results were statistically analysed. Based on the results obtained, first spray treatment, with the mean contamination of 15.45% and second spray treatment with the mean contamination of 12.25% had the highest impact on reducing contamination lentil seeds to B. lentis and between them there was no statistically significant difference and were in one group. Therefore, spraying one time during the early flowering until 15 days after it was the best time to control of B. lentis.

scholarly journals Evaluation of Chickpea (Cicer arietinum L.) Genotypes for Yield and Drought Tolerance under Rain Fed and Irrigated Conditions

2020 ◽  
pp. 33-42
Author(s):  
R. Divya Madhuri ◽  
V. Jayalakshmi ◽  
M. Shanthi Priya
Keyword(s):  
Andhra Pradesh ◽  
Yield Loss ◽  
Agricultural Research ◽  
Block Design ◽  
High Yield ◽  
Research Station ◽  
Drought Tolerant ◽  
Major Constraint ◽  
Randomized Complete Block Design ◽  
The Mean

In Southern India, drought stress is a major constraint to chickpea production and yield stability. Drought tolerant index (DTI) that provides a measure of drought based on yield loss under drought condition in comparison to normal condition was used for screening drought-tolerant genotypes. This study was conducted to determine drought tolerant genotypes with high yield in stress and non-stress conditions utilising physiological traits. Thirty chickpea genotypes were tested in a randomized complete block design with three replications under rain fed and irrigated conditions at Regional Agricultural Research Station, Nandyal, Andhra Pradesh, India during rabi, 2018-2019. The analysis of variance carried out for yield and drought tolerant traits revealed highly significant differences among the genotypes for all characters under rain fed as well as irrigated conditions. NBeG 776, NBeG 779, NBeG 868, ICCV 181606, MH 13 and MH 14 are drought tolerant. NBeG 776, NBeG 779 and NBeG 868 are suitable under both rain fed and irrigated conditions with significantly higher yields over their respective means. ICCV 181606, MH 13 and MH 14 are suitable exclusively for rain fed condition with significantly superior yields over the mean.

scholarly journals Evaluation of Potato Genotypes for Plant and YieldCharactersin Field at Dailekh

2021 ◽  
Vol 19 (2) ◽  
pp. 16-24
Author(s):  
Binod Prasad Luitel ◽  
Bishnu Bahadur Bhandari ◽  
Bihani Thapa
Keyword(s):  
Tuber Yield ◽  
Block Design ◽  
Research Station ◽  
Spring Season ◽  
Marketable Yield ◽  
Significant Difference ◽  
Randomized Complete Block Design ◽  
The Mean ◽  
On Farm ◽  
Eye Depth

A field experiment was conducted at Horticulture Research Station (HRS), Dailekh, in Mid-Western hills of Nepal during 2019 and 2020, to evaluate the performance of ten potato genotypes for plant, and tuber yield characters. The potato genotypes were evaluated during spring season in a randomized complete block design with three replications. The genotypes showed highly significant difference for all the traits except tuber emergence. The mean squares for the year were also significant for all the traits except tuber emergence, stem numberplant -1 and total tuber yield. The interaction between genotypes and years did not show significant differences in all the traits except stem numberplant -1. Genotype CIP392797.22 produced more marketable yield (27.5 tha -1) and total tuber yield (30.2tha -1) than all other genotypes. The genotype CIP392797.22 is characterized as medium maturing, oval-shaped and dark red-skinned one with shallow eye depth in the tuber, and it imparted 13.2% higher marketable yield than Kufri Jyoti (24.3 tha -1). Thus, the genotype CIP392797.22 is recommended to evaluate on-farm for the verification and up-scaling among farmers at Mid-Western Nepal.

scholarly journals EVALUATION OF YIELD, YIELD COMPONENTS AND SOME PHYSIOLOGICAL AND QUALITATIVE TRAITS OF CORN AFFECTED BY CHEMICAL AND BIOLOGICAL NITROGEN FERTILIZERS

2019 ◽  
Vol 18 (1) ◽  
pp. 3-12
Author(s):  
Sajad Kordi ◽  
Fardin Ghanbari
Keyword(s):  
Yield Components ◽  
Agricultural Research ◽  
Block Design ◽  
Chemical Fertilizer ◽  
Nitrogen Fertilizers ◽  
Fertilizer Treatment ◽  
Research Station ◽  
Area Index ◽  
Qualitative Traits ◽  
Significant Difference

In order to evaluate the yield, yield components and some physiological and qualitative traits of corn treated with nitrogen fertilizers (biological, chemical and integrated), a field experiment was conducted at the Agricultural Research Station of Khorramabad during 2016 growing season. Treatments were arranged in a complete randomized block design with four replications. Experimental treatments consisted of 100% chemical fertilizer (urea), bio-fertilizer (nitroxin), integration of bio-fertilizer + 25% chemical fertilizer, integration of bio-fertilizer + 50% chemical fertilizer, integration of bio-fertilizer + 75% chemical fertilizer and the control. Results showed that the effect of different treatments of fertilizers on all measured traits, except for number of rows in each ear and carotenoids, was significant. The results indicated that integration of bio-fertilizer + 75% chemical fertilizer affected the highest grain yield (9.31 t ha–1), dry biological yield (20.96 t ha–1), number of kernels in each row (41.67), plant height (201.02 cm), hectoliter weight (0.82 g cm–3), chlorophyll b (0.43 mg g–1 FW), total chlorophyll (1.1 mg g–1 FW) and leaf area index (LAI) (4) and there was no significant difference among this treatment and 100% chemical fertilizer (N) and integration of bio-fertilizer + 50% chemical fertilizer treatments in all measured traits. The greatest harvest index (45.8) and grain protein-content (9.1%) resulted from the integration of biofertilizer+ 50% chemical fertilizer treatment. Also the highest 1000-grains weight (281.13 g) and chlorophyll a (0.66 mg g–1 FW) were caused by 100% chemical fertilizer (urea) treatments. Results showed that integration of bio-fertilizer + chemical fertilizer could be considered as a means to reduce the consumption of chemical fertilizers for sustainable agriculture.

scholarly journals Effect of Seaweed Extract Spray on Vegetative and Flowering Growth of Two Narcissus Species

2019 ◽  
Vol 32 ◽  
pp. 134-139
Author(s):  
Ayat H.M. Al-Khuzaey ◽  
Fatimah A.H. Al-Asadi
Keyword(s):  
Agricultural Research ◽  
Block Design ◽  
Dry Weight ◽  
Seaweed Extract ◽  
Stem Length ◽  
Vase Life ◽  
Research Station ◽  
White Variety ◽  
Extract Concentration ◽  
Significant Difference

An experiment was carried out in the Cloth Canopy, Agricultural Research Station, College of Agriculture, University of Basrah, during the agricultural season 2018-2019, to study the effect of the seaweed extract spray (0, 2 and 4 m.L-1) on vegetative and flowering growth of two Narcissus species. Local white flowers (Narcissus tazetta) and the imported yellow flowers (N. eastertide). A factorial experiment with Randomized Completely Block Design (R.C.B.D) were used, with three replicates, the averages were compared using Least Significant Difference (L.S.D). When the plants reached treated at the emergence completion, leaves were sprayed to wetness full, with three times, the process was repeated every 15 days. The results showed that the white variety was significantly higher as well as plants treated with 4 m.L-1 extract showed significant superiority in all studied traits, the interaction between the white variety and spraying with seaweed extract concentration of 4 m.L-1 had a significant on the number of leaves5.00 leaf plant-1, leaf area 818 cm2, fresh and dry weights (30.16 and 15.70 g) of the vegetative total, flower stem length 45.55 cm, vase life 17.29 day.  while the interaction between the yellow species and spraying with seaweed extract concentration of 4 m.L-1 had a significant on fresh and dry weight of the flowers (16.80 and 1.73 g).

scholarly journals Study on Effect of Supplementary Irrigation on Rainfed Chickpea (Cicer arietinum L.)

2015 ◽  
Vol 3 (3) ◽  
pp. 431-433
Author(s):  
Nav Raj Acharya ◽  
Jiban Shrestha ◽  
Subarna Sharma ◽  
Gun Bahadur Lama
Keyword(s):  
Grain Yield ◽  
Agricultural Research ◽  
Proper Time ◽  
Block Design ◽  
Winter Season ◽  
Research Station ◽  
Residual Soil ◽  
Supplementary Irrigation ◽  
Significant Difference ◽  
Irrigation Time

Chickpea is one of the important winter legumes in Nepal. It is grown after rice or maize either as sole or mixed crop. In Nepal, chickpea is mostly grown as rainfed crop on residual soil moisture or sometimes under irrigation. Lack of irrigation results drought and heat stress which affects crop growth and development. Irrigation at proper time is one of the most important factors for achieving higher crop yield.  The experiment regarding use of supplementary irrigation time on chickpea was carried out at Regional Agricultural Research Station, Khajura, Banke, Nepal during the winter season of the year 2011 and 2012. The experiment was laid out in Randomized Complete Block Design with three replications. Seven different time intervals of irrigation was applied in the experiment for both years. Treatments differed significantly in terms of grain yield but showed non -significant difference in days to flowering and maturity over the years. The combined analysis of the experiments showed that the highest grain yield (2318 kg/ha) was produced when irrigation was supplied at vegetative stage followed by irrigation supplied at flowering stage (2298 kg/ha) and pod fill stage (2104 kg/ha) respectively.Int J Appl Sci Biotechnol, Vol 3(3): 431-433

scholarly journals Yield Performance of Heat Tolerant & Early Maturing Wheat Varieties in Chattogram Region

2021 ◽  
pp. 82-96
Keyword(s):  
Agricultural Research ◽  
Block Design ◽  
Cost Ratio ◽  
Research Station ◽  
Wheat Varieties ◽  
Benefit Cost Ratio ◽  
Significant Difference ◽  
Early Maturing ◽  
Heat Tolerant ◽  
Benefit Cost

The experiment was conducted in two consecutive crop seasons (2015-16 and 2016-17) at Regional Agricultural Research Station (RARS), Hathazari, Chattogram during Rabi season (November to March) with 3 duplicate laid out Randomized Complete Block Design (RCBD) to compare the rehearsal of high-placed outcome, early maturing and heat tolerant varieties under increasing temperature. BARI released early maturing wheat varieties were used for optimum sowing time and heat tolerance as an adaptive mechanism suffering from terminal heat stress. Six heat-tolerant early maturing wheat varieties were (BARI Gom 25, BARI Gom 26, BARI Gom 27, BARI Gom 28, BARI Gom 29, and BARI Gom 30). The highest crop output was gained from BARI Gom 30 (4.33 t/ha) followed by BARI Gom 26 (4.06 t/ha) in a couple of years. The lowest yield was found from BARI Gom 27 (2.66t/ha) followed by BARI Gom 29 (3.53 t/ha), BARI Gom 28 (3.36 t/ha), and BARI Gom 25 (3.13 t/ha) both years. Crop output of wheat and amount of spike showed significant difference and rest of the parameters were insignificant. The earliest maturing variety was BARI Gom 30 and produced a maximum crop yield than others. BARI Gom 30 showed a maximum benefit-cost ratio (BCR) of 1.73 and BARI Gom 27exhibited the lowest benefit-cost ratio (BCR) of 1.06. This result of the experiment showed that early high yielding variety and the best adaptive variety was BARI Gom 30 among the six varieties in Chattogram.

scholarly journals Biodiversity of insects associated with safflower (Carthamus tinctorius) crop in Gachsaran, Iran

2015 ◽  
Vol 47 (1) ◽  
pp. 26 ◽  
Author(s):  
K. Saeidi ◽  
S. Mirfakhraei ◽  
F. Mehrkhou ◽  
O. Valizadegan
Keyword(s):  
Agricultural Research ◽  
Carthamus Tinctorius ◽  
Research Station ◽  
Susceptible Host ◽  
Beneficial Insects ◽  
Agricultural Research Station ◽  
Significant Difference ◽  
The Family ◽  
The Mean

The present research conducted to see the biodiversity of insects in warm and cool areas from March to April in 2009 at the Gachsaran Agricultural Research Station. A total number of 4261 specimens, which were identified into 31 families and 92 species. Out of total 31 families collected, 10 families were pests, 2 families belongs to predators and beneficial insects and 7 families belongs to parasitoids and beneficial insects and finally, 12 families of insects are saprophage and polyphagous. There was no significant difference (P>0.05) in the number of insects collected between months. The mean number of insects collected in the month of March, April and May was 34.7, 30.7 and 36.2 respectively. The Basht area is most susceptible host for insects (37.9), while the Gachsaran and Lishter areas is less susceptible (33.5) and (28.4) so both sites not differ significantly in the population of insects. The family Coccinellidae had more population in the Gachsaran-safflower zone (98.3) than the Basht-safflower zone (54.6) and it was significantly similar to the family cicadellidae. Similarly, different families like Aphididae (98.0), Cicadellidae (74), Thripidae (50.0), Curculionidae (26.6), Noctuidae (25.0) and Torymidae (27.3) had higher population in the Gachsaran-safflower zone than in the Basht-safflower area with means of 92.3, 63.0, 42.6, 21.0, 21.6 and 19.3 respectively. Also the families like Nymphalide, Pieridae, Lygaeidae, Papilionidae, Miridae, Pentatomidae, Reduviidae, Geometridae, Gryllotalpidae, Mantidae, Acrididae, Saturnidae and Anthocoridae had mean population of 12.6, 7.4, 12.0, 4.1, 4.4, 8.6, 1.9, 0.5, 7.5, 2.4, 11.3, 3.3 and 8.9.

scholarly journals Effect of Humic Acid on Some growth Characteristics and Green Yield of Two Hybrids of Broad bean (Vicia faba L.)

2019 ◽  
Vol 32 ◽  
pp. 256-261
Author(s):  
Hajar A. Abdel Nabi ◽  
Abbas K. Obaid
Keyword(s):  
Humic Acid ◽  
Broad Bean ◽  
Agricultural Research ◽  
Sandy Loam ◽  
Block Design ◽  
Total Yield ◽  
Control Treatment ◽  
Average Weight ◽  
Research Station ◽  
Significant Difference

The experiment was conducted at the agricultural research station of the College of Agriculture- University of Basrah in 2018-2019 season in sandy loam soils in order to study the effect of three concentrations of humic acid (0, 2 and 4 g.L-1) on the growth and yields of two hybrids of Broad bean ("Rico and Rama F1"). Split Plot Design by Randomized Complete Block Design (R.C.B.D) with three replications, and the least significant difference test (L.S.D) was used to compare averages at a probability level of 0.05. The most important results obtained are: The hybrid "Rico" is gave a significant increase in the number of branches.Plant-1, the percentage of flowering in addition to the average weight of the pod, while the hybrid "Rama F1" gave a significant increase in the number of flowers and pods.Plant-1, weigh of pod.Plant-1 (259.3 gm) in addition to the total yield (24.34 tons.ha-1). Humic acid concentrations 2 and 4 g.L-1 gave a significant increase in number of leaves.plant-1, leaf area, soft weight of vegetative, number of flowers.plant-1, number of pods.plant-1, average weight of pod, yield. Plant-1 (259.9 g) in addition the total yield (24.40 tons.ha-1), while control treatment gave a significant increase in the percentage of ripening flowers. The interaction between humic acid and hybrids had significant increase in all characters in the study except the percentage of ripening flowers.

Caracterização da Peneira Média em Clones de Coffea canephora

REVISTA FIMCA ◽  
2018 ◽  
Vol 5 (2) ◽  
pp. 28-31
Author(s):  
Darlan Darlan Sanches Barbosa Alves ◽  
Victor Mouzinho Spinelli ◽  
Marcos Santana Moraes ◽  
Carolina Augusto De Souza ◽  
Rodrigo da Silva Ribeiro ◽  
...  
Keyword(s):  
Genetic Improvement ◽  
Block Design ◽  
Coffea Canephora ◽  
Coffee Production ◽  
Randomized Block Design ◽  
Significant Difference ◽  
The Mean ◽  
Four Blocks ◽  
Selection Of

Introdução: O estado de Rondônia se destaca como tradicional produtor de café, sendo o segundo maior produtor brasileiro de C. canephora. No melhoramento genético de C. canephora, a seleção de plantas de elevada peneira média está associada à bebida de qualidade superior. Objetivos: O objetivo desse estudo foi avaliar a variabilidade genética de clones de C. canephora para o tamanho dos grãos, mensurado a partir da avaliação da peneira média (PM). Materiais e Métodos: Para isso, foi conduzido ao longo de dois anos agrícolas experimento no campo experimental da Embrapa no município de Ouro Preto do Oeste-RO, para a avaliação da peneira média de 130 genótipos (clones) com características das variedades botânicas Conilon, Robusta e híbridos intervarietais. O delineamento experimental utilizado foi de blocos ao acaso, com quatro repetições de quatro plantas por parcela. Resultados: Não houve resultados significativos para a interação clones X anos, indicando uma maior consistência no comportamento das plantas ao longo do tempo. Porém foram observadas diferenças significativas para o tamanho dos grãos entre os genótipos avaliados, possibilitando selecionar genótipos superiores. Conclusão: Os genótipos agruparam-se em cinco classes de acordo com o teste de média, subsidiando a caracterização de um gradiente de variabilidade da característica avaliada ABSTRACTIntroduction: Coffea canephora accounts for approximately 35% of the world's coffee production. The state of Rondônia stands out as a traditional coffee producer, being the second largest Brazilian producer of C. canephora. In the classical genetic improvement of C. anephora, the selection of plants of high average sieve is associated with a drink of superior quality. Objectives: The objective of this udy was to evaluate the genetic variability of Coffea canephora clones for the agronomic medium sieve (PM). Materials and Methods: The experiment was conducted in the experimental field of Embrapa, municipality of OuroPreto do Oeste-RO, located at coordinates 10º44'53 "S and 62º12'57". One hundred thirty genotypes (clones) of botanical characteristics Conilon, Robusta and intervarietal hybrids were evaluated in the agricultural years 2013-2014 and 2014-2015. The experimental design was a randomized block design with four blocks and four plants per plot, spacing 3.5 x 1.5 meters between plants. Results: Significant difference was found for the grain size. According to the F test, at 5% probability, the genotypes were grouped into five classes according to the mean test. Conclusion: The results obtained subsidized the characterization of a variability gradient of the evaluated trait.

Nitrogen Requirement of Potato for Eastern Indo-Gangatic Plain of India

2020 ◽  
Vol 7 (03) ◽  
Author(s):  
S. K. YADAV ◽  
R. K. SINGH ◽  
V. K. DUA ◽  
S SINGH ◽  
SARALA YADAV ◽  
...  
Keyword(s):  
Tuber Yield ◽  
Potato Crop ◽  
Block Design ◽  
Nitrogen Level ◽  
Cost Ratio ◽  
Research Station ◽  
Net Benefit ◽  
Marketable Tuber ◽  
Benefit Cost Ratio ◽  
Significant Difference

A field experiment was carried out during 2015-16 and 2016-17 at ICAR-Central Potato Research Station, Patna, Bihar, in randomized block design with four replications with objective to quantity the optimum requirement of nitrogen to potato crop. Significantly the highest plant height was recorded with nitrogen level of 300 kg/ha. Distributions of the smallest size of tuber yield of potato were decreasing with increasing the level of nitrogen. There was about 26.0% more yield of the smallest size tuber of potato was recorded with zero nitrogen as compare to the highest level of nitrogen i.e. 300 kg/ha. Increasing the nitrogen over the level of 150 to 225 kg per hectare, increasing the yield of tuber gradually slower rate than nitrogen level from 0 to 150 kg/ha. Total and marketable tuber yield of potato were increasing significantly with increasing level of nitrogen up to 150 kg/ha. There was no significant difference in marketable tuber yield was found for nitrogen level between 150 and 225 kg/ha. Highest (1.66) net benefit cost ratio was also recorded with level of nitrogen @ 150 kg/ha in potato. Hence, application of nitrogen @ 150 kg/ha was found statistically and economically more beneficial for potato cultivation in Eastern Indo-Gangatic plain of India.

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