Response of old and new cowpea varieties to insecticide spray regimes in the Sudan savanna of Nigeria

A field study conducted to investigate the Repellent effects urine insecticide spray and NPK(15:15:15) compound fertilizer on the growth and yield of watermelon (Citrullus Lonatus Thumb) in forestry Research Institute of Nigeria, (FRIN) experimental plot at Agbede, Etsako West Local Government Area of Edo State. Four regimes of Urine insecticide spray and four rate of NPK compound fertilizer application were factorially combined and laid out in a completely randomized block design (CRBD) with three replication. Urine insecticide spray and fertilizer application did not affect the period of flowering and poddring significantly (P> 0.05). NPK compound fertilizer application significantly (P< 0.05) increase the number and length of main vines, pod number and yield while Vines insecticide spray significantly (P< 0.05) increase the length of the main virus and yield. In the rate of application, 200kg/ha NPK was optimum and this recommended for watermelon cultivation. Twice spray regimes of urine insecticide was recommended for watermelon cultivation.

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Influence of Brevicoryne brassicae L. incidence on the yield of marketable cabbage heads under different insecticide spray regimes in highlands of Himachal Pradesh (India)

Bangladesh Journal of Botany ◽

10.3329/bjb.v44i3.38539 ◽

2018 ◽

Vol 44 (3) ◽

pp. 351-358

Author(s):

Sanjay Kumar Sharma

Keyword(s):

Negative Correlation ◽

Brevicoryne Brassicae ◽

Weak Correlation ◽

Cabbage Aphid ◽

Pre Treatment ◽

L 14 ◽

Spray Regimes ◽

Insecticide Sprays ◽

Insecticide Spray ◽

Aphid Populations

Strong and negative correlation was observed between the yield of marketable cabbage heads and populations of/plant infestations by cabbage aphid (Brevicoryne brassicae L.) 14 days after first and second spray. Weak correlation existed between yield of marketable cabbage heads and aphid populations/plant infestations at pre-treatment. Therefore, insecticide sprays should be done to control late aphid infestations and avoided against early aphid infestations.

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TIMING OF INSECTICIDE APPLICATIONS FOR THE CONTROL OF THE COLORADO POTATO BEETLE, LEPTINOTARSA DECEMLINEATA (SAY), (COLEOPTERA: CHRYSOMELIDAE), ON POTATOES IN NEW BRUNSWICK

The Canadian Entomologist ◽

10.4039/ent120587-6 ◽

1988 ◽

Vol 120 (6) ◽

pp. 587-591 ◽

Cited By ~ 4

Author(s):

G. Boiteau

Keyword(s):

New Brunswick ◽

Colorado Potato Beetle ◽

Leptinotarsa Decemlineata ◽

Russet Burbank ◽

Optimal Time ◽

Larval Abundance ◽

Potato Beetle ◽

Leptinotarsa Decemlineata Say ◽

Spray Regimes ◽

Insecticide Spray

AbstractDifferent insecticide spray regimes were tested in 1984, 1985, and 1986 to determine the optimal time to control the Colorado potato beetle, Leptinotarsa decemlineata (Say), on Russet Burbank potatoes in New Brunswick. Insecticides applied in mid-July at the peak of larval abundance when plants were entering into bloom had the greatest efficacy in controlling beetles and protecting the yield. A single insecticide application at 50% bloom was 12–17% and 82–95% more effective than one application at bloom and full growth, respectively.

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RESPONSE OF COWPEA (Vigna unguiculata L.Walp) VARIETIES TO PHOSPHORUS LEVELS IN SUDAN SAVANNA OF NIGERIA

International Multidisciplinary Research Journal ◽

10.25081/imrj.2017.v7.3380 ◽

2017 ◽

pp. 23-29

Author(s):

M. Musa, K. A. Bashir, S. A. Tadda

Keyword(s):

Grain Yield ◽

Sea Level ◽

Block Design ◽

Positive Association ◽

Field Trials ◽

Growth And Yield ◽

Randomized Complete Block Design ◽

Cowpea Varieties ◽

Sudan Savanna ◽

Phosphorus Levels

Field trials were conducted during the 2015 rainy season at the Bayero University Kano Teaching and Research Farm (110 58’N, 8025’E and 475m above sea level) and National Institute of Horticulture (NIHORT) Bagauda (lat. 120 08'N, long. 80 32'E, 500m above sea level). The study was conducted to determine the response of cowpea varieties to phosphorus levels in the Sudan savannah of Nigeria. The treatments consisted of four cowpea varieties (UAM-09-1051-1, IT99K-573-2-1, IT99K-573-1-1, and TVX 3236) and phosphorus fertilizer (SSP) (0, 20, and 40kg/ha) which were laid out in a Randomized Complete Block Design (RCBD). The result revealed that application of 40 kg/ha P2O5 statistically recorded the highest grain yield/ha at BUK. No significant phosphorus effect was recorded on grain yield/ha at Bagauda. The findings of the study also revealed that there was significant varietal effect on cowpea growth and yield at both study locations. Higher grain yield was recorded from variety IT99k-573-2-1 (1193.400 kg/ha), followed by variety TVX 3236 (950.900 kg/ha) and IT99k-573-1-1 (776.500 kg/ha) at BUK while no significant effect of variety was recorded at Bagauda. The result of the simple correlation analysis revealed significant negative and positive association between growth and yield parameters. Thus based on this findings, application of 40 kg/ha P2O5 can be recommended for better cowpea growth and yield. Similarly, variety IT99k-573-2-1 can be recommended for both locations.

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Morphological Basis for Yield Differences among Cowpea Varieties in the Sudan Savanna Zone of Nigeria

IOSR Journal of Agriculture and Veterinary Science ◽

10.9790/2380-071214953 ◽

2014 ◽

Vol 7 (12) ◽

pp. 49-53 ◽

Cited By ~ 1

Author(s):

N. Kamai ◽

Keyword(s):

Morphological Basis ◽

Cowpea Varieties ◽

Sudan Savanna ◽

Savanna Zone

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Appraisal of cowpea cropping systems and farmers’ perceptions of production constraints and preferences in the dry savannah areas of Nigeria

CABI Agriculture and Bioscience ◽

10.1186/s43170-021-00046-7 ◽

2021 ◽

Vol 2 (1) ◽

Author(s):

Saba Baba Mohammed ◽

Daniel Kwadjo Dzidzienyo ◽

Muhammad Lawan Umar ◽

Mohammad Faguji Ishiyaku ◽

Pangirayi Bernard Tongoona ◽

...

Keyword(s):

Plant Density ◽

Insect Pests ◽

Cropping Systems ◽

Pairwise Comparison ◽

High Yield ◽

Crop Failure ◽

Production Constraints ◽

Cowpea Varieties ◽

Breeding Programmes ◽

Sole Cropping

Abstract Background Low plant density and wide intra-plant spacing in traditional cowpea cropping systems are among the factors responsible for low yield on farmers’ fields. Sole cropping and improved intercropping systems have been advocated in the last few years to increase yield in the dry savannah areas of Nigeria. This study investigated the level of adoption of high yielding cowpea cropping systems including factors that influenced their use and farmers’ perceived production constraints and preferences. A total of 420 farmers across 36 villages of northern Nigeria were interviewed, and data collected was analyzed using descriptive statistics to appraise farmers predominant cowpea cropping systems and factors that determine the use of sole versus intercropping were identified with the aid of binary logit regression. Furthermore, pairwise comparison ranking was deployed to understand farmers’ view of cowpea production constraints and preferred traits. Results The results revealed that, many of the farmers (42%) still grow cowpeas in the traditional intercropping and a good number (25%) cultivate the crop as a sole crop, while 23% had fields of cowpeas in both sole and intercropping systems. Farmers reported the incidence of high insect pests, limited access to land, desire to have multiple benefits, and assurance in the event of crop failure as reasons for preference for intercropping over sole planting. The pairwise comparison ranking of constraints and preferences revealed insect pests, Striga, drought and poor access to fertilizers as major constraints to increased productivity. Many farmers indicated high yield as the most preferred trait. Conclusions Findings indicate a need for increased education and training of cowpea farmers on the importance of growing cowpeas in sole cropping and or improved intercropping systems. Genetic improvement efforts should focus on developing cowpea varieties that address farmers production constraints and reflect the diversity of consumers’ preferences for the crop. Hence, breeding for resistance to insect pests and high yield is recommended as an important priority of cowpea breeding programmes in the region.

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Yield and biological nitrogen fixation of cowpea varieties in the semi-arid region of Brazil

Biomass and Bioenergy ◽

10.1016/j.biombioe.2012.05.017 ◽

2012 ◽

Vol 45 ◽

pp. 109-114 ◽

Cited By ~ 19

Author(s):

Ana Dolores Santiago de Freitas ◽

Acácia Fernandes Silva ◽

Everardo Valadares de Sá Barretto Sampaio

Keyword(s):

Nitrogen Fixation ◽

Biological Nitrogen Fixation ◽

Arid Region ◽

Cowpea Varieties ◽

Semi Arid Region ◽

Biological Nitrogen ◽

Semi Arid

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EFFECT OF FIVE INSECTICIDES ON POPULATIONS OF THE SIX-SPOTTED LEAFHOPPER AND THE INCIDENCE OF ASTER YELLOWS IN CARROTS

Canadian Journal of Plant Science ◽

10.4141/cjps70-032 ◽

1970 ◽

Vol 50 (2) ◽

pp. 169-174 ◽

Cited By ~ 7

Author(s):

R. C. HENNE

Keyword(s):

Effective Treatment ◽

Aster Yellows ◽

Commercial Scale ◽

Aster Leafhopper ◽

Insecticide Spray

Five insecticides were evaluated for their ability to control the aster leafhopper, Macrosteles fascifrons (Stål), and to reduce the incidence of aster yellows disease, transmitted by this vector in carrots. Furadan (2,3-dihydro-2,2-dimethyl-7-benzofuranyl methylcarbamate) as a single granular treatment at seeding was as effective in reducing the level of aster yellows disease as five or eight foliar treatments with carbaryl (1-naphthyl N-methylcarbamate) in 1967 and 1968. Oxydemeton-methyl (O,O-dimethyl S-[2-(ethylsulfinyl)-ethyl]phosphorothioate) was comparable with carbaryl in reducing aster leafhopper numbers and incidence of aster yellows disease. Disulfoton (O,O-diethyl S-[2-(ethylthio)ethyl]phosphorodithioate) as a single granular application at seeding was the least effective treatment in this study. Aster yellows incidence in carrots treated with DDT [1,1,1-trichloro-2,2-bis(p-chlorophenyl) ethane] was only slightly lower than with carbaryl in a commercial scale trial. A 5-day insecticide spray schedule was not appreciably more effective than a 10-day schedule.

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