Use of a Systematic Spacing Design as an Aid to the Study of Inter-cropping: Some General Considerations

Huxley, P. A.; Maingu, Z.

doi:10.1017/s0014479700008334

Cited by 41 publications

(26 citation statements)

References 9 publications

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“…In the past, there has been debate regarding planting density and plant spacing when calculating LER for comparing monocultures with mixed cropping systems (Oyejola and Mead, 1982). Optimum plant densities in monoculture have been suggested for best achievable yields (Huxley and Maingu, 1978), and deviation from these planting densities will reduce the yield of the monocultures and thus bias LER toward the mixed plantings. However, in some instances when certain variables are being isolated it is appropriate to maintain similar densities across treatments (Mead and Willey, 1980).…”

Section: Discussionmentioning

confidence: 99%

Plant functional diversity improves short-term yields in a low-input intercropping system

Franco

King

Masabni

et al. 2015

Agriculture, Ecosystems & Environment

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Section: Discussionmentioning

confidence: 99%

Plant functional diversity improves short-term yields in a low-input intercropping system

Franco

King

Masabni

et al. 2015

Agriculture, Ecosystems & Environment

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“…Here in additive intercropping of maize and soybean, the intercropped soybean grain yield per hectare was reduced by 40% as compared sole cropped (Table 4). Comparably, Huxley and Maingu (1978), in cereals and legumes intercropping system, reported that the grain yield of the legume component declined, on average, by about 52% of the sole crop yield, whereas the cereal yield was reduced by only 11%.…”

Section: Soybean Yield Components and Yieldmentioning

confidence: 93%

Effect of Soybean Varieties and Nitrogen Fertilizer Rates on Yield, Yield Components and Productivity of Associated Crops Under Maize/Soybean Intercropping at Mechara, Eastern Ethiopia

Bekele¹,

Belete²,

Tana³

2016

AFF

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Due to decreasing land units and decline in soil fertility integrating soybean in to the maize production system is a viable option for increasing productivity and protein source. In view of this, field experiment was conducted during 2012 at Mechara Agricultural Research Center with theobjectives of identifying best compatible combinations of maize with soybean varieties and N rates for maximum yield and yield components of the associated cropsand productivity of intercropping system. Three varieties of soybean (Awasa-95, Cocker-240 and Crowford) were intercropped with early maturing maize variety Melkasa-2 with three rates of nitrogen (32, 64 and 96 kg N ha -1 ). The experiment waslaid out in factorial arrangement in randomized complete block design in three replications. Highest maize grain yield (2196kg ha -1 ) was obtained from soybean variety Crowford and 32 kg N ha -1 and lowest yield (1352 kg ha -1 ) was recorded from maize intercropped with soybean variety Awasa-95 at 96 kg N ha -1 . The grain yield of intercropped soybean was increased from 586 kg ha -1 to 842kg ha -1 as the nitrogen rates increased from 32 kg N ha -1 to 96 kg N ha -1 . The higheist LER (1.10) was obtained from maize intercropped with soybean variety Crowford and lowest LER (1.08) was from maize intercropped with variety Cocker-240 due to main effects of soybean varieties while due to main effects of N, the highest (1.16) and the lowest (1.1) LER were obtained from higher rate of nitrogen (96 kg N ha -1 ) and lowest rate of nitrogen (32 kg N ha -1 ), respectively. On the other hand, the highest Gross Monetary Value (17315 Birr ha -1 ) was recorded from interaction of Cocker-240 at highest rate of nitrogen (96kg N ha -1 ) which was not significantly different from Awasa-95 at 32 kg N ha -1 (15304 birr ha -1 ) and Crowford at 32 kg N ha -1 (15103) while lowest GMV (12362birr ha -1 ) was obtained from variety Cocker-240 at 32 kg N ha -1 . Therefore, variety Awasa-95 at lower rate of nitrogen (32 kg ha -1 ) could be best in intercropping system to reduce cost of fertilizer and maximize total productivity.

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“…Ofori & Stern (1987) reported that the cereal components of cereal-legume intercrops were the more competitive species due to a relatively higher growth rate, a height advantage and a more extensive rooting system . Huxley & Maingu (1978) referred to the cereal as the dominant crop and the legume as the dominated component . Francis (1985) proposed that to reduce the size and cost of yield tests it is useful to identify a single variety of the dominant crop (which is generally less affected by the variety of the dominated species) and test several legume genotypes in order to identify higher-yielding varieties of the dominated component .…”

Section: Introductionmentioning

confidence: 99%

Evaluation of yield stability of cowpea under sole and intercrop management in Nigeria

et al. 1991

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Nine cowpea (Vigna unguiculata (L .) Walp .) breeding lines were grown in 13 experiments under sole crop and intercrop management, with and without insecticide application, in Nigeria . Cowpea was intercropped with cassava (Manihot esculenta Cranz), maize (Zea mays L.) and maize-cassava in the forest zone and with sorghum (Sorghum bicolor Moench .) and millet (Pennisetum glaucum (L .) R.Br.) in the savanna zone . Line by cropping system interactions were significant in 5 of 13 experiments and line by insecticide treatment interactions were significant in 2 of 13 experiments . Cowpea yield was severely depressed in intercropped plots and in plots to which no insecticide was applied . Among-environment variation in cowpea yield was greater when no insecticide was applied . Within each management treatment, the yield performance and stability of the cowpea lines was examined . Stability was assessed both by examining among-environment coefficients of variation and by regression analysis . Several of the breeding lines evaluated appeared promising under different levels of management and in a diversity of environments .

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Use of a Systematic Spacing Design as an Aid to the Study of Inter-cropping: Some General Considerations

Cited by 41 publications

References 9 publications

Plant functional diversity improves short-term yields in a low-input intercropping system

Plant functional diversity improves short-term yields in a low-input intercropping system

Effect of Soybean Varieties and Nitrogen Fertilizer Rates on Yield, Yield Components and Productivity of Associated Crops Under Maize/Soybean Intercropping at Mechara, Eastern Ethiopia

Evaluation of yield stability of cowpea under sole and intercrop management in Nigeria

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