Nitrogen fertilization of okra (Abelmoschus esculentus) 
in an intercropping system with cassava 
(Manihot esculenta) and maize (Zea mays) in 
south-western Nigeria

Olasantan, F. O.

doi:10.1017/s0021859699007054

Cited by 16 publications

(16 citation statements)

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“…Numerous studies have described the effects of nitrogen (N) application on the growth and yield of okra (Abelmoschus esculentus [L.] Moench) for fresh consumption (Olasantan, 1999;Prabhakar et al, 1985). In the U.S.A., Lamont (1999) recommended N application at a rate of 34 kg ha 1 , together with 29-38 kg ha 1 phosphorus (P) and 55-74 kg ha 1 potassium (K), while in Pakistan Anjum and Amjad (1999) showed that plant height, the number of leaves and pods per plant, fresh pod length and yield increased with increasing N rates of up to 100-125 kg ha 1 .…”

Section: Introductionmentioning

confidence: 99%

Effect of nitrogen application on seed yield, pod and seed characteristics of okra

Mohammadi

Khah

Petropoulos

et al. 2016

Journal of Plant Nutrition

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Four okra cultivars (Abelmoschus esculentus [L.] Moench) were cultivated for two growing periods at nitrogen (N) application rates of 150, 300 and 450 mg N L 1 . There was no effect of N on pod size (length and diameter) or on the number of seeds per pod and seed size (mean 1000 seed weight), all these characteristics of which related to the genotype. High N application (450 mg N L 1 ), increased the seed yield of the cultivar with the lowest flower induction (Boyiatiou), but only in experiment 2. In Veloudo, seed yield was highest at 300 mg N L 1 , whereas in Pylaias and Clemson 450 mg N L 1 reduced seed yield. In all cultivars, seeds produced at an N Downloaded by [University of Missouri-Columbia] at 11:26 20 June 2016 ACCEPTED MANUSCRIPT ACCEPTED MANUSCRIPT 2 rate of 450 mg N L 1 exhibited a significantly higher percent germination N, possibly by reducing the incidence of seed hardness.

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Section: Introductionmentioning

confidence: 99%

Effect of nitrogen application on seed yield, pod and seed characteristics of okra

Mohammadi

Khah

Petropoulos

et al. 2016

Journal of Plant Nutrition

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“…Although differences in fresh pod yield for cassava Odongbo/okra intercrop were not significantly greater than for okra monoculture, these results indicate that intercropping with cassava did not markedly affect the phenology of okra irrespective of sowing date and cropping season. Earlier studies (Ikeorgu et al, 1989;Olasantan, 1999Olasantan, , 2001b have reported good performance of okra intercropped with cassava as a result of improved soil micro-environment, reductions (22-30%) in weed competition and in the number of root-gall okra plant Ϫ1 over monoculture. Hulugalle and Ezumah (1991) …”

Section: Effect Of Cropping System On Okramentioning

confidence: 96%

“…Consequently, with adequate increase in its current production level, the country export trade and foreign exchange earnings might be expanded through exportation of fresh okra fruits. In southern Nigeria, okra is commonly grown in mixtures with the main staple crops such as yams, cassava and maize which occupy more than 80% of the arable land (Olasantan, 1999). Okra is a broadleaf vegetable.…”

Section: Journal Of Sustainable Agriculturementioning

confidence: 99%

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Cassava Cultivation Management for Sustainable Vegetable Production in Intercropping with Okra

Olasantan¹

2005

Journal of Sustainable Agriculture

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A five-year field experiment evaluated the effects of growing okra [Abelmoschus esculentus (L.) Moench] in inter-row spaces of cassava (Manihot esculenta Crantz) and at three sowing dates on yield of both crops. Two contrasting cassava cultivars (TMS 30572-early maturing, short with full-branch and dense canopy and Odongbo-late maturing, tall with less-branch and sparse canopy) were evaluated. In the first experiment, okra was sown on 30 July, 20 August and 3 September as a late-season crop in 1999 and on 27 May, 10 June and 24 June as an early-season crop in 2000. In the second experiment, okra was sown on 29 May, 21 June and 12 July as an early-season crop in 2001 and on 13 August, 29 August and 12 September as a late-season crop in 2002. Leaf area index (LAI), days to 50% flowering and first pod harvest, yield and yield components of okra in mixed stands were the same as in monoculture in both experiments. However, cassava Odongbo/okra intercrop resulted in an increase in fresh pod yield and economic returns of okra by 19-21% and 20-26%, respectively, compared with monoculture and cassava TMS 30572/okra intercrop. LAI of okra was significantly increased by 20-45% in the first and second sowing dates, but it took 2-10 days longer for the first and second-sown okra plants to reach 50% flowering and first pod harvest over those of the third-sowing date in any experiment. Mean increase in okra fresh pod yield with first and second sowing dates was 2.4-5.6 t ha Ϫ1 over the third sowing date in either experiment. The mean economic returns with the first and second sowing dates were 105% and 50% in the first experiment and 125% and 50% in the second experiment, respectively, over those of the third sowing date regardless of cropping system. The cassava yields were not affected by cropping system and okra sowing date. For sustainable okra production in wide inter-row spaces of cassava, growing both crops in May for the earlyseason crops and in early August for the late-season crops and using tall, sparse canopy cassava is recommended.

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“…In West Africa, the period between January and April is the driest and hottest period, just before the first rains and beginning of farming activities. Growth and yield responses of vegetables to intercropping with cassava vary with the cultivar, mixture components, fertilizer application, planting date, population density and the prevailing growing conditions (Ikeorgu et al, 1989: Olasantan 1999, 2001. Growing pepper in mixtures may provide natural shade and a more favourable microclimate for the developing vegetable crop.…”

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confidence: 99%

INFLUENCE OF CASSAVA (MANIHOT ESCULENTA) INTERCROP ON GROWTH AND FRUIT YIELDS OF PEPPER (CAPSICUM SPP.) IN SOUTH-WESTERN NIGERIA

2007

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In tropical Africa, pepper (Capsicum spp.) is grown as a rainfed crop, and its production is limited by the long, hot growing season. Field experiments were conducted in Nigeria to evaluate the effects of cassava (Manihot esculenta) on the growth and yields of three pepper cultivars and gross returns in 2001-2003 was planted between rows of cassava cvs Idileru (PI), Odongbo (PO) and TMS 30572 (PT). In Experiment 2, pepper cvs Sombo, Tatase and Atarodo, were mixed with TMS 30572 (MS, MT or MA). The growth environment for the intercropped pepper differed from sole crops of pepper. Radiant energy reaching the soil surface, maximum diurnal soil and canopy temperatures, and weed growth were lower with intercropping, with the lowest values being observed in the PI and PT intercrops. Similarly, soil moisture content and the number of earthworm casts were greater with intercropping, with the highest values also occurring in the PI and PT intercrops. In both experiments, fresh fruit yields of pepper depended on the duration of harvest, the number of fruits per plant and the weight of fruits. In Experiment 1, although the number of fruits and fruit yield of cv. Sombo were greater in the sole crop (SP) than the PO intercrop, the fruit yields in the PI and PT intercrops were similar to those of the SP plot. In Experiment 2, the number of fruits and yield of intercropped pepper cvs Tatase, Sombo and Atarodo were 25-28 % higher, on average, than in pure stands. Cassava tuber yield was not affected by intercropped pepper in either experiment. Total gross returns were greater than growing either pepper or cassava in monoculture. Increased total gross returns in the intercrops were obtained in the PI and PT treatments and in the MS and MA treatments without a significant reduction in pepper fruit yield. By promoting early fruit set and harvest, and bearing in mind the cumulative gross returns, mixing pepper and cassava enhanced the value of the vegetable, as early fresh pepper fruits command a premium price. It is concluded that pepper can be grown between cassava rows to provide a suitable environment for growth, but that this depends on the cassava cultivar. Using the less tall early cassava cultivar, with a relatively moderate leaf area index in a mixture with pepper is therefore recommended. I N T RO D U C T I O NPepper is widely cultivated in the tropics, and is generally recognized in the international market for its high content of vitamins A and C. The main species, Capsicum frutescens (hot pepper) and Capsicum annuum (sweet pepper), constitute about 40 % of the vegetables consumed in Nigeria (Denton and Swarup, 1981).In the humid tropics, pepper is grown as a rainfed crop, with annual rainfall totals of 650-1250 mm and relative humidities of 75-88 % providing suitable growing conditions. Rainfall greater than this range is detrimental, as it leads to poor fruit set and rotting of the fruits (Purseglove, 1977). Excess soil moisture causes shedding of

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Nitrogen fertilization of okra (Abelmoschus esculentus) in an intercropping system with cassava (Manihot esculenta) and maize (Zea mays) in south-western Nigeria

Cited by 16 publications

References 0 publications

Effect of nitrogen application on seed yield, pod and seed characteristics of okra

Effect of nitrogen application on seed yield, pod and seed characteristics of okra

Cassava Cultivation Management for Sustainable Vegetable Production in Intercropping with Okra

INFLUENCE OF CASSAVA (MANIHOT ESCULENTA) INTERCROP ON GROWTH AND FRUIT YIELDS OF PEPPER (CAPSICUM SPP.) IN SOUTH-WESTERN NIGERIA

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