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Dry Matter Yield of Maize (Zea mays L.) as an Indicator of Mineral Fertilizer Efficiency
Article

SPAD Leaf Greenness Index: Green Mass Yield Indicator of Maize (Zea mays L.), Genetic and Agriculture Practice Relationship

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Department of Agronomy, Poznań University of Life Sciences, Dojazd 11, 60-632 Poznań, Poland
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Department of Mathematical and Statistical Methods, Poznań University of Life Sciences, Wojska Polskiego 28, 60-637 Poznań, Poland
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Department of Genetics, Plant Breeding and Seed Production, Wrocław University of Environmental and Life Sciences, Grunwaldzki 24A, 53-363 Wrocław, Poland
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Department of Grassland and Natural Landscape Sciences, Poznań University of Life Sciences, Dojazd 11, 60-632 Poznań, Poland
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Department of Gastronomical Sciences and Functional Foods, Poznań University of Life Sciences, Wojska Polskiego 31, 60-624 Poznań, Poland
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Authors to whom correspondence should be addressed.
Academic Editor: Tika Adhikari
Plants 2021, 10(5), 830; https://doi.org/10.3390/plants10050830
Received: 24 February 2021 / Revised: 14 April 2021 / Accepted: 19 April 2021 / Published: 21 April 2021
The study presents the results of two field studies (Experiment I, Experiment II), whose aim was to assess the impact of agriculture factors on maize green mass and leaf greenness index (Soil and Plant Analysis Development, SPAD) in critical growth stages, as well as to determine the relationship between the SPAD index and the yield of green maize for ensiling. It was shown that thermal and humidity conditions in maize growing seasons determined the value of the SPAD leaf greenness index and the yield of maize harvested for silage. Row application of mineral fertilizer (N, NP) and selection of “stay-green” varieties guarantee a higher yield of maize green mass. Growing maize in direct sowing reduces chlorophyll content expressed in SPAD units, thereby reducing plant nitrogen condition, which significantly decreases the yield of biomass intended for silage. The SPAD leaf greenness index determined in critical stages of maize growth can be considered as a yield predictor of green mass for ensiling. The examined maize cultivars were divided into two groups on the basis of hierarchically grouping using the unweighted pair group method of arithmetic means. The first group comprised cultivars SY Cooky and Drim “stay-green,” while the second one included cultivars ES Paroli “stay-green” and ES Palazzo. View Full-Text
Keywords: maize; fresh matter yield; SPAD; agriculture factors; microsatellite markers maize; fresh matter yield; SPAD; agriculture factors; microsatellite markers
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MDPI and ACS Style

Szulc, P.; Bocianowski, J.; Nowosad, K.; Zielewicz, W.; Kobus-Cisowska, J. SPAD Leaf Greenness Index: Green Mass Yield Indicator of Maize (Zea mays L.), Genetic and Agriculture Practice Relationship. Plants 2021, 10, 830. https://doi.org/10.3390/plants10050830

AMA Style

Szulc P, Bocianowski J, Nowosad K, Zielewicz W, Kobus-Cisowska J. SPAD Leaf Greenness Index: Green Mass Yield Indicator of Maize (Zea mays L.), Genetic and Agriculture Practice Relationship. Plants. 2021; 10(5):830. https://doi.org/10.3390/plants10050830

Chicago/Turabian Style

Szulc, Piotr, Jan Bocianowski, Kamila Nowosad, Waldemar Zielewicz, and Joanna Kobus-Cisowska. 2021. "SPAD Leaf Greenness Index: Green Mass Yield Indicator of Maize (Zea mays L.), Genetic and Agriculture Practice Relationship" Plants 10, no. 5: 830. https://doi.org/10.3390/plants10050830

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