Potato (Solanum spp.) in the hot tropics V. Intercropping with maize and the influence of shade on tuber yields

Midmore, David J.; Berrios, D.; Roca, José Manuel

doi:10.1016/0378-4290(88)90006-8

Cited by 36 publications

(11 citation statements)

References 7 publications

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“…Higher nutrient acquisition under intercropping system confirmed the advantage of this system over sole cropping which resulted to highest dry matter accumulation (DMA) and yield. Since different planting patterns significantly influence the light environment under intercropping systems, and mutual shading considerably affects the productivity of intercrops because sun-light plays a vital role in increasing the photosynthetic rate and biomass yield 29 , 30 . In our experiment, different planting patterns exhibited a significant effect on the DMA of maize and soybean, and highest DMA of maize and soybean was recorded in SI and SII, respectively that was probably due to the optimum planting space, light availability and nutrients availability for maize and soybean.…”

Section: Discussionmentioning

confidence: 99%

Effect of planting patterns on yield, nutrient accumulation and distribution in maize and soybean under relay intercropping systems

Raza

Khalid

Xia

et al. 2019

Sci Rep

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Planting patterns affect nitrogen (N), phosphorus (P), and potassium (K) acquisition and distribution in maize and soybean under intercropping conditions. Here we reveal that strip relay-intercropping increases the N, P, and K uptake and distribution across plant organs (root, straw, and seed) of maize and soybean, accelerates the dry-matter production of intercrop-species, and compensates the slight maize yield loss by considerably increasing the soybean yield. In a two-year experiment, soybean was planted with maize in different planting patterns (SI, 50:50 cm and SII, 40:160 cm) of relay-intercropping, both planting patterns were compared with sole cropping of maize (SM) and soybean (SS). As compared to SI, SII increased the N, P, and K accumulation in each organ of soybean by 20, 32, and 18 (root) %, 71, 61, and 76 (straw) %, and 68, 65, and 62 (seed) %, respectively, whereas decreased the N, P, and K accumulation in each organ of maize by 1, 4, and 8 (root) %, 1, 10, and 3 (straw) %, and 5, 10, and 8 (seed) %, respectively. Overall, in SII, relay-cropped soybean accumulated 91% of total nutrient uptake (TNU) of sole soybean plants, and relay-cropped maize accumulated 94% of TNU of sole maize plants.

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Section: Discussionmentioning

confidence: 99%

Effect of planting patterns on yield, nutrient accumulation and distribution in maize and soybean under relay intercropping systems

Raza

Khalid

Xia

et al. 2019

Sci Rep

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“…These variations in biomass accumulation and yield are likely due to the differences in light interception and planting arrangements. Moreover, mutual shading of intercrop crops considerably changed the light interception [46] and any change in light interception directly affect the photosynthetic capacity (leaf area) of crops [40]. The narrow-wide row planting arrangement of maize and soybean under relay intercropping condition substantially increased the soybean yield as compared to equal row planting arrangement which was might be due to the higher light transmission at soybean canopy, improved leaf area and enhanced photosynthetic rate of soybean canopy in wide rows especially during the co-growth period because initial growth and development of crops is very important to obtain higher seed yield [25].…”

Section: Discussionmentioning

confidence: 99%

Narrow-wide row planting pattern improves the light environment and seed yields of intercrop species in relay intercropping system

et al. 2019

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Different planting patterns affect the light interception of intercrops under intercropping conditions. Here we revealed that narrow-wide-row relay-intercropping improves the light interception across maize leaves in wide rows (60cm) and narrow rows (40cm), accelerated the biomass production of intercrop-species and compensated the slight maize yield loss by considerably increasing the soybean yield. In a two-year experiment, maize was planted with soybean in different planting patterns (1M1S, 50:50cm and 2M2S, 40:60cm) of relay-intercropping, both planting patterns were compared with sole cropping of maize (M) and soybean (S). As compared to M and 1M1S, 2M2S increased the total light interception of maize leaves in wide rows (WR) by 27% and 23%, 20% and 10%, 16% and 9% which in turn significantly enhanced the photosynthetic rate of WR maize leaves by 7% and 5%, 12% and 9%, and 19% and 4%, at tasseling, grain-filling and maturity stage of maize, respectively. Similarly, the light transmittance at soybean canopy increased by 218%, 160% and 172% at V 2 , V 5 and R 1 stage in 2M2S compared with 1M1S. The improved light environment at soybean canopy in 2M2S considerably enhanced the mean biomass accumulation, and allocation to stem and leaves of soybean by 168%, and 131% and 207%, respectively, while it decreased the mean biomass accumulation, and distribution to stem, leaves and seed of maize by 4%, and 4%, 6% and 5%, respectively than 1M1S. Compared to 1M1S, 2M2S also increased the CR values of soybean (by 157%) but decreased the CR values of maize (by 61%). Overall, under 2M2S, relay-cropped maize and soybean produced 94% and 69% of the sole cropping yield, and the 2M2S achieved LER of 1.7 with net income of 1387.7 US $ ha -1 in 2016 and 1434.4 US $ ha -1 in 2017. Our findings implied that selection of optimum planting pattern (2M2S) may increase the light interception and influence the light distribution between maize and soybean rows under relay-intercropping conditions which will significantly increase the intercrops productivity. Therefore, more attention should be paid to the light environment when considering the sustainability of maize-soybean relay-intercropping via appropriate planting pattern selection.

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“…In potatoes, tuber number and tuber yield were generally decreased by shading (Kuruppuarachchi 1990;Midmore et al 1988;Sale 1973), but in regions with a high solar irradiation, yields were increased when shading was applied either during early plant development (Kuruppuarachchi 1990) or around noon (Midmore et al 1988). This effect was explained by an enhanced plant survival rate through shading.…”

Section: Effect Of Shading On Yield and Qualitymentioning

confidence: 99%

Agrophotovoltaic systems: applications, challenges, and opportunities. A review

Weselek

Ehmann

Zikeli

et al. 2019

Agron. Sustain. Dev.

313

154

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The expansion of renewable energies aims at meeting the global energy demand while replacing fossil fuels. However, it requires large areas of land. At the same time, food security is threatened by the impacts of climate change and a growing world population. This has led to increasing competition for limited land resources. In this context, the combination of photovoltaics and plant productionoften referred to as agrophotovoltaic (APV) or agrivoltaic systemshas been suggested as an opportunity for the synergistic combination of renewable energy and food production. Although this technology has already been applied in various commercial projects, its practicability and impact on crop production have hardly been investigated. In this review, we give a short summary of the current state of the art and prospective opportunities for the application of APV systems. In addition, we discuss microclimatic alterations and the resulting impacts of APV on crop production. Our main findings are that (1) crop cultivation underneath APV can lead to declining crop yields as solar radiation is expected to be reduced by about one third underneath the panels. However, microclimatic heterogeneities and their impact on crop yields are missing reference and thus, remain uncertain. (2) Through combined energy and crop production, APV can increase land productivity by up to 70%. (3) Given the impacts of climate change and conditions in arid climates, potential benefits are likely for crop production through additional shading and observed improvements of water productivity. (4) In addition, APV enhances the economic value of farming and can contribute to decentralized, off-grid electrification in developing and rural areas, thus further improving agricultural productivity. As such, APV can be a valuable technical approach for more sustainable agriculture, helping to meet current and prospective needs of energy and food production and simultaneously sparing land resources.

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Potato (Solanum spp.) in the hot tropics V. Intercropping with maize and the influence of shade on tuber yields

Cited by 36 publications

References 7 publications

Effect of planting patterns on yield, nutrient accumulation and distribution in maize and soybean under relay intercropping systems

Effect of planting patterns on yield, nutrient accumulation and distribution in maize and soybean under relay intercropping systems

Narrow-wide row planting pattern improves the light environment and seed yields of intercrop species in relay intercropping system

Agrophotovoltaic systems: applications, challenges, and opportunities. A review

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