Productivity of high-yielding crops

Osaki, Mitsuru; Fujisaki, Yukihiro; Morikawa, Kazuhiro; Matsumoto, M.; Shinano, Takuro; Tadano, Toshiaki

doi:10.1080/00380768.1993.10419177

Cited by 12 publications

(3 citation statements)

References 5 publications

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“…This trait is an indicator of good plant health, slower aging rate (Figure 1), and drought tolerance after flowering [14]. The "stay-green" trait shows a positive correlation with plant yielding [15,16]. However, the cause-and-effect relationship between these traits and grain yield is limited by the duration of the growing season and genetic basis of the cultivar under study [17,18].…”

Section: Introductionmentioning

confidence: 99%

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

Szulc

Bocianowski

Nowosad

et al. 2021

Plants

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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.

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Section: Introductionmentioning

confidence: 99%

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

Szulc

Bocianowski

Nowosad

et al. 2021

Plants

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“…Plant productivity depends on photosynthetic production, i.e., the amount of assimilates generated during the process of photosynthesis [1,2]. It largely determines the biological yield of plants, i.e., fresh or dry weight production potential per soil unit area.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Nitrogen Yield-Forming Efficiency in the Cultivation of Maize (Zea mays L.) under Different Nutrient Management Systems

et al. 2021

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Failure to adjust the fertilization system to quantitative needs, and especially to the dynamics of mineral demand, causes plant metabolism disorders, low mineral utilization by the plant, and an increased risk of environmental pollution. Additionally, unbalanced mineral fertilization may reduce the assimilation surface actively involved in photosynthesis, which determines the yield potential of individual varieties. The aim of the strict field experiment was to determine the responses of two types of maize varieties (Zea mays L.) to treatments with different nutrient management systems, as expressed by the growth analysis of active organs during photosynthesis, SPAD (soil and plant analysis development) leaf greenness index, green mass yield, and unit nitrogen productivity from PFPFN mineral fertilization (partial factor productivity fertilizer nitrogen). It was demonstrated that the total area of leaf blades of a single plant and the LAI (leaf area index) value were significantly higher in the “stay-green” hybrid compared to the traditional variety. The analysis of leaf morphological structure of the “stay-green” hybrid, based on SLA (specific leaf area), indicated a highly effective utilization of nitrogen, leading to faster leaf production with a larger assimilation area, which formed the basis for effective absorption of solar radiation. The selection of “stay-green” varieties for silage cultivation guarantees high green mass yields. The risk of lower maize biomass intended for ensilage can only be reduced by applying balanced mineral fertilization of all nutrients. The omission of phosphorus (P) and potassium (K) in the mineral fertilization dose, regardless of the variety tested, was a factor reducing the yield of maize biomass intended for ensilage and a lower partial factor productivity of nitrogen fertilizer compared to the treatment optimally balanced with respect to the nitrogen dose.

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“…Canadell et al (1996) 옥수수 유효근권 깊이의 지역별 차이를 살펴보면, 스웨덴 Zollikofen (47.00N, 7.28E)에서는 100 cm (Qin et al, 2006), 캐나다 Ottawa (45.23N, 75.43W)에서 95 cm (Dwyer et al, 1996), 캐나다 Ontario (42.52N, 80.31W)에서 30 cm (Ball-Coelho et al, 1998), 미국 Lamberton (44.13N, 95.16W)에서 144.7 cm (Allmaras et al, 1975), 미국 Princeton (45.34N, 93.35W)에서 105 cm (Laboski et al, 1998), 미국 Columbia (38.57N, 92.19W)에서 50 cm (Buyanovsky and Wagner, 1986), 일본 Hokkaido (43.14N, 141.57E)에서 60 cm (Osaki et al, 1995) …”

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Study on the Standards of Proper Effective Rooting Depth for Upland Crops

Zhang¹,

Han²,

Jung³

et al. 2017

Korean J. Soil. Sci. Fert.

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The study was performed to determine effective soil depth with crop type. Lysimeters, filled with three types of soils (sandy loam, loam and clay loam), were used. Effective soil depths for 25 cm, 50 cm, 75 cm, and 100 cm were considered for each soil. Six crops were investigated for plant height and yield, and rooting depths: Chinese cabbage, maize, lettuce, potato, red pepper, and soybean. Experiment was conducted at the National Institute of Agricultural Sciences in Suwon from 2012 to 2014. Effective rooting depth including 70% of root ranged from 19 cm to 29 cm for Chinese cabbage, from 24 cm to 38 cm for maize, from 17 cm to 24 cm for lettuce, from 27 cm to 32 cm for soybean, and around 50 cm and 30 cm for potato and red pepper. The maximum depth was 60 cm for soybean, 50 cm for Chinese cabbage, lettuce, and potato, and 75 cm for maize and red pepper. Each crop showed high yield in the treatment with soil depth over maximum rooting depth under all soils.

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Productivity of high-yielding crops

Cited by 12 publications

References 5 publications

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

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

Evaluation of Nitrogen Yield-Forming Efficiency in the Cultivation of Maize (Zea mays L.) under Different Nutrient Management Systems

Study on the Standards of Proper Effective Rooting Depth for Upland Crops

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