Crop growth, light utilization and yield of relay intercropped cotton as affected by plant density and a plant growth regulator

Mao, Lili; Zhang, Lizhen; Zhao, Xinhua; Liu, Shaodong; Werf, Wopke Van der; Zhang, Siping; Spiertz, Huub; Li, Zhaohu

doi:10.1016/j.fcr.2013.09.021

Cited by 156 publications

(85 citation statements)

References 33 publications

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“…Studies in the intercrop context are needed in addition to those conducted previously in the sole crop because cotton plant form in the intercrop with wheat is different from that in sole cotton. This is caused by plastic plant responses to environmental conditions specific to the intercrop situation (Gu et al, 2014;Mao et al, 2014), e.g. intercropped cotton has different leaf size and leaf angles compared to sole cotton (Gu et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

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Yield components and quality of intercropped cotton in response to mepiquat chloride and plant density

Mao

Zhang

Evers

et al. 2015

Field Crops Research

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Section: Introductionmentioning

confidence: 99%

“…Relay intercropping of cotton and wheat is a common practice in the Yellow River region in China (Zhang et al, 2007;Mao et al, 2014). In this system, wheat strips are sown in November, with strips of bare soil between them.…”

Section: Introductionmentioning

confidence: 99%

Yield components and quality of intercropped cotton in response to mepiquat chloride and plant density

Mao

Zhang

Evers

et al. 2015

Field Crops Research

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“…It modulates plant architecture by reducing leaf area and internodes length, improves light penetration, exalts boll set at lower sympodial branches and first position bolls, and results in improved yield (Nuti et al, 2006;Mao et al, 2014). Furthermore, it exhilarates leaf Chl, CO 2 exchange rate, photosynthesis and alters source-sink relationship (Zhao and Oosterhuis, 2000;Gwathmey and Clement, 2010;Rosolem et al, 2013).…”

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confidence: 99%

Comparative Productivity and Seed Nutrition of Cotton by Plant Growth Regulation under Deficient and Adequate Boron Conditions

et al. 2018

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-Plant growth regulators (PGRs) potentially improve the productivity and nutritional quality of crops through modulation of morphology, physiology and nutrient dynamics within plants. However, the effect of PGRs may differ under environments with deficient and adequate nutrients. Here the role of mepiquat chloride (MC) on the yield and seed nutritional quality of cotton was explored under boron (B) deficiency and adequate conditions in a two-year field study. Mepiquat chloride was foliar-applied at different dosages (0 and 70 mg L -1 ) and growth stages (squaring and flowering) and B was applied into soil (0, 1, 1.5, 2 and 2.5 kg ha -1 ) to establish B deficiency and adequate levels. Seed cotton yield and seed nutritional quality were substantially higher under adequate B conditions, compared to B deficiency. Nonetheless, MC applications improved the seed cotton yield, seed oil yield, seed protein yield and concentration of seed mineral nutrients (N, P, K, B, Zn and Fe except for Mn) under both B deficiency and adequate conditions. Nonetheless, the improvement in all traits caused by MC application was greater under adequate B conditions (2-2.5 kg ha -1 B), compared to B deficiency conditions. Furthermore, the application of MC at squaring proved more beneficial in improving the seed cotton yield and nutritional quality, compared to the flowering stage. In conclusion, MC application improves seed cotton yield and cotton seed nutritional quality under both deficient and adequate B conditions, through an improved nutrient accumulation in seed tissues; however, the efficacy of MC is affected by B deficiency. Keywords

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“…We describe here in detail how the equations for the light interception in the strip intercrop are derived from elementary geometric principles and reasoning, originally developed by Goudriaan (1977) and Pronk et al (2003), and later used with minor modifications by Zhang et al (2008), Mao et al (2014) and Wang et al (2015). A strip-planted crop is a sole crop with some rows omitted to create empty paths (strip width: R, and path width: P) (Fig.…”

Section: Fraction Of Light Interception For a Strip-planted Sole Cropmentioning

confidence: 99%

“…The model was previously modified and used to simulate radiation interception in a wheatcotton intercrop (Zhang et al, 2008;Mao et al, 2014). In wheat-cotton intercrop, it was not necessary to take the shading effect of cotton on wheat into account because of the short intercropping period and the small size of the cotton plants during this period.…”

Section: Calculation Of Light Interceptionmentioning

confidence: 99%

On yield gains and yield gaps in wheat-maize intercropping : opportunities for sustainable increases in grain production

Gou¹

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Intercropping is the cultivation of two or more crop species simultaneously in the same field, while relay intercropping means that the growing periods of the crop species are only partially overlapping. Intercropping has advantages with respect to productivity, resource capture, build-up of soil organic matter, and pest and disease suppression. This thesis aims to quantify and explain the yield advantages in wheat-maize relay intercropping and to assess the importance of intercropping for food production and land use efficiency.Wheat-maize intercropping had land equivalent ratios around or above one in two experiments in the Netherlands. Wheat in border rows showed major yield increases, and this yield increase was due to increases in the number of tillers per plant and the number of kernels per ear. The yield advantage of intercropped wheat was associated with a high radiation interception and radiation use efficiency (RUE). Under Dutch growing conditions, maize performance in the intercrop was constrained. Intercropping had a negative effect on the yield per plant and radiation use efficiency of maize. A strip intercrop model was developed, parameterized and tested with data on wheat-maize intercropping in the Netherlands. The model simulates radiation interception and growth in relay-strip intercrops with two species in different planting configurations. The model also allows simulating the consequences of border row effects for total system productivity. Bayesian analysis was applied to calibrate radiation use efficiency of wheat and maize in sole crops and intercrop.Intercropped wheat had higher a RUE than sole wheat, while intercropped maize had a lower RUE than sole maize. Intercropped maize had less favourable leaf traits (e.g. nitrogen content) during the flowering stage than sole maize in 2014, but the leaves in the intercrop had a higher photosynthetic rate than those in the sole crop. Possible explanations for this finding include differences between sole and mixed crops in water acquisition from soil, light distribution in the canopy, nitrogen distribution within the leaf and the contribution of the ear leaf to the growth of the cob. The low radiation use efficiency in intercropped maize may relate to nitrogen deficiency during grain filling. New concepts for potential yield, yield gain and yield gap in intercropping were developed in this thesis. Using crop model simulations and farm survey data, those concepts were operationalized in the context of wheat and maize production in an oasis area (Zhangye city) in northwest China. Wheat-maize intercropping resulted in substantial yield gains under potential and actual growing conditions. A comparison of potential and actual yields indicated a yield gap of 33% for sole wheat, 49% for sole maize, 15% for intercropped wheat, and 51% for intercropped maize. The land use analysis showed that discontinuing the use of intercropping in this region will decrease grain production substantially.Overall, this thesis studied the growth and productivity of ...

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Crop growth, light utilization and yield of relay intercropped cotton as affected by plant density and a plant growth regulator

Cited by 156 publications

References 33 publications

Yield components and quality of intercropped cotton in response to mepiquat chloride and plant density

Yield components and quality of intercropped cotton in response to mepiquat chloride and plant density

Comparative Productivity and Seed Nutrition of Cotton by Plant Growth Regulation under Deficient and Adequate Boron Conditions

On yield gains and yield gaps in wheat-maize intercropping : opportunities for sustainable increases in grain production

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