Response of sunflower (Helianthus annuus L.) to nitrogen and phosphorus application in the forest-savanna transition zone of south west, Nigeria

Olowe, Victor; Adebimpe, O A; Obadiahi, T E

doi:10.4314/njhs.v10i1.3405

Cited by 5 publications

(6 citation statements)

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“…It was also perceived from the data displayed in Figure 5 that the rise in the number of achene head -1 was more in cultivar Hysun-33 as compared to Agawara-3. Similar to our outcomes Olowe et al (2005) also described that in contrast to control treatment, the application of both N and P significant enhanced the weight of achene per head and seed return of sunflower. Similarly, the findings of Chaves et al (2015) also supported our results that N, P and K at 100, 120 and 120 kg ha -1 were found beneficial and expressively boosted the achene head -1 as well as weight of achene in sunflower.…”

Section: Number Of Achene Head -1supporting

confidence: 90%

“…The work of the previous researcher Amanullah and Khan (2010) revealed that by the higher levels of K and P sunflower growth period has been prolonged which greatly improved head size and also ensued in optimal yield. According to the results of Olowe et al (2005) who stated that by the use various rate of nitrogen and phosphorus the head diameter of sunflower was significantly affected and higher head size was observed under application of these (N and P) nutrients.…”

Section: Head Size (Cm)mentioning

confidence: 99%

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Growth and Yield Response of Sunflower to Organic Amendments in Aridisol

Ahmad¹,

Tahir²,

Sabah³

et al. 2021

PJAR

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A round the globe as population is increasing with the passage of time so dietary habits of individuals is also changing. Demand for food, fuel and feed is increasing associated with urbanization so there is huge pressure on agriculture to combat this type of situations ( Jouffret et al., 2011). In Pakistan agriculture is the occupation through with 70 % of the population is involved directly or indirectly but still Abstract | Phosphorus (P) is a limited natural reserve and a major limiting factor for global crop production. The adverse soil biogeochemical characteristics of alkaline-calcareous soils make P the least available macronutrient. Therefore, alternative P source such as rock phosphate (RP) can offer a promising choice for sustainable P supply under P stress environment. A pot research was executed to explore the response of sunflower (Helianthus annuus L.) to sparingly soluble P sources grown under P deficient environment at research area, College of Agriculture, University of Sargodha during 2018. The experiment was laid out in a Completely Randomized Design (CRD) with eight treatments replicated thrice.

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Section: Number Of Achene Head -1supporting

confidence: 90%

Section: Head Size (Cm)mentioning

confidence: 99%

Growth and Yield Response of Sunflower to Organic Amendments in Aridisol

Ahmad¹,

Tahir²,

Sabah³

et al. 2021

PJAR

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“…The treatments were replicated three times each year. The varieties were assigned to the main plot since more information is available on their performance (Olowe, ; Olowe et al , , ) and seed source to the sub‐plot since there is a dearth of information on its effects on sunflower productivity especially in the tropics.…”

Section: Methodsmentioning

confidence: 99%

Seed yield, head characteristics and oil content in sunflower varieties as influenced by seeds from single and multiple headed plants under humid tropical conditions

Olowe

Folarin

Adeniregun

et al. 2013

Annals of Applied Biology

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Field trials were conducted during 2004 and 2005 to determine the effect of sowing seeds from plants with multiple heads and seeds from single headed plants of sunflower on seed yield, head characteristics and oil content of three widely grown open pollinated varieties (Funtua, Record and Isaanka) in the humid forest -savanna transition zone which is outside the current growing areas with a view to improving stability and sunflower productivity in this region. Seeds from multiple headed plants produced plants that flowered and matured 2-3 days later than plants from single headed plants. Apart from days to flowering in 2004, number of days to maturity and plant height were affected independently by variety and seed source factors. However, the seeds from single headed plants produced plants that recorded significantly (P < 0.01) higher head weight, head diameter, achene weight and number per head than plants from seeds of plants with multiple heads. Seed source had little effect on sunflower seed yield and oil content. However, Funtua produced significantly (P < 0.05) high seed yield (1956.0 kg ha −1 ± 76.06) when seeds from plants with multiple heads were sown, while Isaanka recorded comparatively high seed yield from seeds of plants from either multiple (1221.0 kg ha −1 ± 165.90) or single heads (1388.0 kg ha −1 ± 135.84) and Record (1201.0 kg ha −1 ± 96.97) when seeds from single headed plants were sown. Therefore, it is recommended that prospective sunflower growers who wish to cultivate Isaanka, can sow seeds from either the multiple or single head and preferably the multiple head for Funtua, and single head for Record.

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“…Haruna (2011) reported that the application of 60 kg N/ha and 13.2 kg P/ha significantly increased sesame seed yields. The application of 60-160 kg N/ha and 30-100 kg P/ha resulted in maximum seed yield (Olowe and Busari, 2000;Ahmad et al, 2001;Haggai, 2004;Vaghani et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

Effects of different NPK levels on growth and seed yield of sesame (<i>Sesamum indicum</i> L) varieties in Bauchi, Nigeria

Apagu,

Abdul,

Waziri

et al. 2024

njbot

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Sesame is an important oil seed crop which is cultivated in the tropics and subtropics of the world but farmers in the northern guinea savanna zone of Nigeria seldom apply fertilizers to the crop. Trials were conducted during the 2018 and 2019 rainy seasons at the Research Farm of the Abubakar Tafawa Balewa University (ATBU), Bauchi, to study the effects of different levels of NPK on the growth and seed yield of sesame (Sesamum indicum L.) in Bauchi. The experiment was laid out in split plot design consisting of four levels of NPK and 8 varieties of sesame, giving a total of 32 treatment combinations. The varieties were kept in the main plot while NPK levels were assigned to subplots. The parameters assessed include plant height, number of leaves, number of primary branches, number of secondary branches, stem diameter, internode length, dry matter, leaf area, days to 75% flowering and maturity, number of capsules, number of seeds per capsule, number of seeds per locule, one thousand seed weight and seed yield. Results showed significant difference (p< 0.05) on growth, yield and yield attributes of sesame in both years. The different grain yield responses were associated with the differences in NPK levels. Sesame seed yield increased linearly from the application of 75 kg NPK ha-1, 100 kg NPK ha-1 to 125 kg NPK ha-1.

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Response of sunflower (Helianthus annuus L.) to nitrogen and phosphorus application in the forest-savanna transition zone of south west, Nigeria

Cited by 5 publications

References 0 publications

Growth and Yield Response of Sunflower to Organic Amendments in Aridisol

Growth and Yield Response of Sunflower to Organic Amendments in Aridisol

Seed yield, head characteristics and oil content in sunflower varieties as influenced by seeds from single and multiple headed plants under humid tropical conditions

Effects of different NPK levels on growth and seed yield of sesame (<i>Sesamum indicum</i> L) varieties in Bauchi, Nigeria

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