&nbsp; Prediction of crude protein content in rice grain with canopy spectral reflectance

Non-destructive and rapid monitoring methods for crude protein content (CPC) in rice grain are of significance in nitrogen diagnosis and grain quality monitoring, and in enhancing nutritional management and use efficiency. In this study, CPC and canopy spectra in rice were measured based on rice field experiment. Key spectral bands were selected by principal component analysis (PCA) method, and the predicted models were built by multiple linear regressions (MLR), artificial neural network (ANN) and partial least squares regression (PLSR). The results showed that there is a significant correlation between CPC content and key spectral bands. The results of prediction for the three models were in order of PLSR > ANN > MLR with correlation values of 0.96, 0.92 and 0.90, respectively, for the validation data. Therefore, it is implied that CPC in rice (grain quality) could be estimated by canopy spectral data.  

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SPRING BARLEY - MAIN FEED CROP OF THE REPUBLIC OF MARI EL

Vestnik of Kazan state agrarin university ◽

10.12737/19301 ◽

2016 ◽

Vol 11 (1) ◽

pp. 22-26

Author(s):

Золоторева ◽

Rimma Zolotoreva ◽

Виноградов ◽

Georgiy Vinogradov ◽

Максимов ◽

...

Keyword(s):

Protein Content ◽

Crude Protein ◽

Grain Quality ◽

Spring Barley ◽

Climatic Conditions ◽

Mineral Fertilizers ◽

Crude Protein Content ◽

The Republic ◽

Feed Crop

The article discusses the influence of mineral fertilizers on formation of productivity and grain quality of different spring barley types in the soil and climatic conditions of the Republic of Mari El. Research has established, that the application of mineral fertilizers for spring barley in doses of N60P60K60 and N90P60K60 increases the crude protein content in the grain and increase harvesting of feed units per unit of cultivated area.

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Grain quality of common bean cultivars under low and high nitrogen dose

Revista de la Facultad de Ciencias Agrarias UNCuyo ◽

10.48162/rev.39.012 ◽

2021 ◽

Vol 53 (1) ◽

pp. 118-127

Author(s):

Fábio Tiraboschi Leal ◽

João Victor Trombeta Bettiol ◽

Vinícius Augusto Filla ◽

Anderson Prates Coelho ◽

Fábio Luíz Checchio Mingotte ◽

...

Keyword(s):

Common Bean ◽

Protein Content ◽

Nitrogen Fertilization ◽

Crude Protein ◽

Grain Quality ◽

Inverse Correlation ◽

Quality Characteristics ◽

Cooking Time ◽

Crude Protein Content

This study aimed to evaluate the effects of low and high topdressing doses of nitrogen (N) on the qualitative attributes of common beans (Phaseolus vulgaris L.) cultivars and indicate cultivars with better grain technological characteristics. The experimental design was randomized blocks in split plots, with four replicates. Plots comprised 16 common bean cultivars of the commercial grain ‘Carioca’, while subplots comprised two N doses: 20 and 120 kg ha-1 applied as topdressing. The following evaluations were carried out: sieve yield (SY), relative grain production on sieves (RGPS), crude protein content (PROT), final water volume absorbed (FVabs), time for maximum hydration (TMH), hydration ratio (HR), cooking time (CT) and resistance to cooking (RC). The results were subjected to analysis of variance by F test and means were grouped by the Scott-Knott test. Multivariate principal component analysis was used to identify processes. The grain quality of common bean is more dependent on the genotype studied than on agricultural management such as nitrogen fertilization. The increase in the N dose applied as topdressing increases the size of common bean grains and their protein content, but with little influence in grain hydration. FVabs and CT depend on the interaction between cultivar and N doses. CT had an inverse correlation with PROT, but it was little pronounced. The cultivars BRSMG Uai, IAC Alvorada, TAA Dama and TAA Bola Cheia have the best grain quality characteristics. Highlights: Cultivar interferes more in the common bean technological quality than nitrogen fertilization. Grains crude protein content had an inverse correlation with the cooking time. Nitrogen fertilization increases the grains size and crude protein content of common bean, but with little influence in grain hydration. The cultivars BRSMG Uai, IAC Alvorada, TAA Dama and TAA Bola Cheia have the best grain quality characteristics.

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Food products. Determination of the total nitrogen content by combustion according to the Dumas principle and calculation of the crude protein content

10.3403/30109615u ◽

2015 ◽

Keyword(s):

Nitrogen Content ◽

Protein Content ◽

Total Nitrogen ◽

Crude Protein ◽

Food Products ◽

Total Nitrogen Content ◽

Crude Protein Content

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Cereals and pulses. Determination of the nitrogen content and calculation of the crude protein content. Kjeldahl method

10.3403/30131418 ◽

2006 ◽

Keyword(s):

Nitrogen Content ◽

Protein Content ◽

Crude Protein ◽

Crude Protein Content ◽

Kjeldahl Method

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Animal feeding stuffs. Determination of nitrogen content and calculation of crude protein content

10.3403/30198882 ◽

2009 ◽

Keyword(s):

Nitrogen Content ◽

Protein Content ◽

Crude Protein ◽

Crude Protein Content ◽

Animal Feeding

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Early productivity and crude protein content of establishing forage swards composed of combinations of native grass and legume species in mixed-grassland ecoregions

Canadian Journal of Plant Science ◽

10.4141/cjps2012-261 ◽

2013 ◽

Vol 93 (3) ◽

pp. 445-454 ◽

Cited By ~ 10

Author(s):

Jenalee M. Mischkolz ◽

Michael P. Schellenberg ◽

Eric G. Lamb

Keyword(s):

Protein Content ◽

Crude Protein ◽

Plant Density ◽

Warm Season ◽

Forage Yield ◽

Schizachyrium Scoparium ◽

Legume Species ◽

Crude Protein Content ◽

Native Grass ◽

Western Wheatgrass

Mischkolz, J. M., Schellenberg, M. P. and Lamb, E. G. 2013. Early productivity and crude protein content of establishing forage swards composed of combinations of native grass and legume species in mixed-grassland ecoregions. Can. J. Plant Sci. 93: 445–454. We evaluated the early establishment productivity of forage swards of native, perennial, cool and warm season grasses, and legumes as they have the potential to provide non-invasive, productive, and drought resistant rangelands. Seven species with agronomic potential and a broad native geographic distribution were selected for testing including: nodding brome [Bromus anomalus (Coult.)], blue bunch wheatgrass [Pseudoregneria spicata (Pursh)], western wheatgrass [Pascopyrum smithii (Rydb.)], side oats grama [Bouteloua curtipendula (Michx.)], little blue stem [Schizachyrium scoparium (Michx.)], purple prairie clover [Dalea purpurea (Vent.)], and white prairie clover [Dalea candida (Willd.)]. Forage swards, including all seven monocultures, 21 two-species mixtures and a mixture with all species, were planted in two sites, Saskatoon and Swift Current, Saskatchewan. Western wheatgrass (WWG) had the highest overall plant density and the strongest effect on the forage yield of the forage swards; however, productivity and crude protein content were not reduced when other species were also included in the forage sward. Dalea spp. did not establish as well as the other species, but had the highest crude protein concentrations. This work provides insight into forage sward development at the establishment stage; additional work is required to determine long-term species impacts for well established forage swards.

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Efficacy of Irrigation Interval after Anthesis on Grain Quality, Alkali Digestion, and Gel Consistency of Rice

Agriculture ◽

10.3390/agriculture11040325 ◽

2021 ◽

Vol 11 (4) ◽

pp. 325

Author(s):

Ramin Rayee ◽

Tran Dang Xuan ◽

Tran Dang Khanh ◽

Hoang-Dung Tran ◽

Kifayatullah Kakar

Keyword(s):

Protein Content ◽

Grain Quality ◽

Cooking Quality ◽

Amylose Content ◽

Rice Grain ◽

Gelatinization Temperature ◽

Rice Varieties ◽

Irrigation Interval ◽

Gel Consistency ◽

Alkali Digestion

The management of amylose and protein contents and cooking quality are the main challenges in rice macronutrients and quality improvement. This experiment was conducted to examine the rice grain quality, alkali digestion, and gel consistency responses to irrigation interval after anthesis. Three rice varieties (K1, K3, and K4) were subjected to different irrigation intervals (1, 2, and 3 d) after anthesis. The findings of this study showed that the protein content was markedly increased from 6.53–6.63% to 9.93–10.16%, whilst the amylose content was decreased significantly from 22.00–22.43% to 16.33–17.56% under stressed treatments at irrigation intervals, whilst the quantity of fatty acids was not affected. The 3-d irrigation interval recorded the highest protein content but the lowest amylose value. In addition, this treatment shows lower gelatinization temperature, but it is negatively associated with hard gel consistency under irrigation interval. This study highlights that the water management following a 3-d irrigation interval from anthesis is a useful and simple treatment to improve rice nutrients and grain cooking quality.

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