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44 real negative results, null findings, and replication failures in Agriculture. Search the index →

WASTE indexes published research — it does not host or republish full papers. Each entry is a metadata record compiled from open scholarly databases; the abstract is shown in full only where the paper is openly licensed, otherwise a short excerpt under fair use. Classifications are automated and approximate.

Negative / Null Result ReportOpen accessAgriculture

Polymorphisms in FSHR and GDF9 loci and their associations with litter size in Zel sheep

Nouraldin Moradi, Narges Nazifi, Qodrat Rahimi Miyanaji et al. · 2014 · مجله بیوتکنولوژی کشاورزی

Follicle stimulating hormone receptor (FSHR) and growth differentiation factor 9 (GDF9) both are the most important proteins that affect reproduction process in mammalian. Polymorphism in these genes and their possible relationship with twining trait in Zel (n=150) sheep are investigated in the present study. Blood samples were collected randomly via vein puncture. PCR-RFLP technique for FSHR marker site showed two A and B alleles with the frequency of 93.33 and 6.67 and two genotypes of AA and BB with the frequency of 93.33 and 6.67, respectively. However, the heterozygote AB genotype was not

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Negative / Null Result ReportOpen accessAgriculture

Incidence of nitrogenous compounds of must on ethyl carbamate formation induced by lactic acid bacteria

José Antonio Suárez Lepe, Carlos Anibal Uthurry · 2007 · OENO One

Aims: Ethyl carbamate (EC) is a toxic compound of major concern for the hygiene quality of wines. Its natural synthesis in wine is connected to the ethanolysis of molecules such as urea (alcoholic fermentation metabolite) and citrulline and carbamyl phosphate (malolactic fermentation metabolites) during ageing. This study reports the effect of adenine, arginine, urea and ammonium phosphate of Vitis vinifera L. cv. Tempranillo must, on EC synthesis in fermented wine using two lactic acid bacteria strains under different microbiological and physicochemical conditions. Methods and results: EC was

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Negative / Null Result ReportOpen accessAgriculture

The Effect of Ethanolic Extract of Melilotus officinal Flowers on Bleeding Time in Male and Female Rabbits

Hassan Toama Mohamed, Ali Sami Amen · 2012 · Al-Qadisiyah Journal For Agriculture Sciences

The present study aimes to examining the effect of the ethanolic extract of Melilotus officinalis flowers on bleeding time ,WBC and RBC count .Total number in males and females adult rabbit eighteen, (9 males and 9females ) are randomly divided into three equal groups (3 males and 3females per group). The first (control) is drenched normal saline while the second and third groups are drenched the ethanolic extracted (20 and 50mg/ml/kg of B.W) for 24 hours. The results reveal significant increase in bleeding time in third group followed by the second group compared with the control while RBC an

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Negative / Null Result ReportOpen accessAgriculture

Measuring Maize Seedling Drought Response in Search of Tolerant Germplasm

Dirk Hays, Steve Hague, Seth C. Murray et al. · 2013 · Agronomy

To identify and develop drought tolerant maize (Zea mays L.), high-throughput and cost-effective screening methods are needed. In dicot crops, measuring survival and recovery of seedlings has been successful in predicting drought tolerance but has not been reported in C4 grasses such as maize. Seedlings of sixty-two diverse maize inbred lines and their hybrid testcross progeny were evaluated for germination, survival and recovery after a series of drought cycles. Genotypic differences among inbred lines and hybrid testcrosses were best explained approximately 13 and 18 days after planting, res

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Negative / Null Result ReportOpen accessAgriculture

Assessment of beet leaf yellowing virus tolerance based on leaf yellowing in sugar beet

Yosuke Kuroda, Kazuyuki Okazaki, Kenji Takashino et al. · 2025 · Agrosystems, Geosciences & Environment

Abstract Sugar beet (Beta vulgaris) production in Japan faces major challenges from virus yellows (VY), caused by beet leaf yellowing virus (BLYV) and transmitted by aphids. Outbreaks have reduced sugar yields, and breeding for tolerant varieties has not been conducted in Japan. This study marks the first step toward developing VY‐tolerant varieties by testing three hypotheses: (1) leaf yellowing can be induced by artificial inoculation, (2) tolerance varies among breeding materials, and (3) differences in tolerance to yellowing disease can be evaluated. From 2017 to 2020, four sugar beet mate

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Negative / Null Result ReportOpen accessAgriculture

The probiotic effects of dietary inactive yeast Saccharomyces cerevisiae var. ellipsoideus on growth factors, survival, body composition and intestinal microbiota of Beluga juvenile (Huso huso)

S.H. Hoseinifar email ; A.R. Mirvaghefi; B. Mojazi Amiri; H.A. Khoshbavar Rostami; M. Poor Amini; K. Darvish Bastami · 2011 · ‬‭Majallah-i ̒Ilmī-i Shīlāt-i Īrān

The probiotic effects of inactive yeast, Saccharomyces cerevisiae var. ellipsoideus was studied on growth performance, survival and intestinal microbiota of beluga juveniles (Huso huso). The study was done in complete randomize design that included feeding of beluga juveniles with diets supplemented with 0 (control), 1, 2 and 5% yeast (4 treatments with 3 replicates). Beluga juveniles (11.40±0.56g) were randomly allocated in 12 oval tanks at a density of 35 fish per tank and triplicate group were fed with experimental diets. At the end of the trial, growth factors (final weight, weight gain,

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Negative / Null Result ReportOpen accessAgriculture

Investigating Carbonate Distribution in Particle Size Components of Some Soils of Khuzestan Province

S. Jafari, M. Karimzadeh, A. Abdeshahi · 2021 · علوم آب و خاک

Characteristics of most soils in arid and semi-arid regions affected by carbonates. The study aimed to determine the distribution of carbonates in the size components of some soils in Khuzestan province. Upward to the bottom of Karun, Karkheh, and Jarahi rivers were studied at depths of 0-50, 50-100, and 150-100 cm. The results showed that the average amount of carbonates in the soils of the Jarahi river basin (37%) was significantly different from the amount in the soils of the other two rivers (33%). Carbonates were observed in all soil size components but the maximum was present in the clay

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Negative / Null Result ReportOpen accessAgriculture

The cross-sectional area of the superficial digital flexor tendon of trained and untrained Thoroughbred racehorses Área transversal do tendão flexor digital superficial de cavalos Puro Sangue Inglês de corrida em treinamento e sem treinamento

Ana Guiomar Matos Santiago Reis, Raquel Yvonne Arantes Baccarin · 2010 · Ciência Rural

Twenty Thoroughbred racehorses were ultrasonographically evaluated to determine the relation between normal values of the cross-sectional area (CSA) of the right and left forelimbs superficial digital flexor tendons (SDFT) in the metacarpal region for trained and untrained Thoroughbreds racehorses. Ultrasonography revealed that CSA at 26cm distal to the accessory carpal bone is larger than other proximal levels, for either left or right forelimbs. In addition, the CSA at 2, 4, 6, 8, 10, 12 and 14cm distal to the accessory carpal bone of the left forelimb are larger (P 0.05) between left and ri

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Negative / Null Result ReportOpen accessAgriculture

EFFECT OF LONGITUDINAL SLOPE ANGLES, VIBRATION SPEEDS AND OUTLETS FOR THE PRODUCE IN GRADING, SEPARATOR OF WHEAT SEED BY USING SPECIFIC GRAVITY SEPARATOR LOCALLY MANUFACTURE

Yasen H. Al tahan · 2005 · Mesopotamia Journal of Agriculture

In this study a specific gravity separator has been used in order to consider the effect of three levels of: longitudinal slop angles, vibration speeds, outlets for the produce and their effect on specific weight, productivity and seed purity. The results show the longitudinal horizontal slop angle (0) surpassed significantly in recording the greatest values for all characteristics of the study. While the second vibration speed surpassed significantly in specific weight and productivity and there were no significant effect in seed purity. in the product out lets, the first out lets achieved th

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Negative / Null Result ReportOpen accessAgriculture

SUSCEPTIBILITY OF SOME MANGO VARIETIES TO THE BUD MITE ERIOPHYES MANGIFERAE (SAYED) AND MAL-FORMATION DISEASE AND THE RELATION OF MITE INFESTATION TO MALFORMATION DISEASE

A.E.A. Mahgoob · 2006 · Arab Universities Journal of Agricultural Sciences

In field study, Eleven mango varieties, (Mangiferae indica L.) at Sharkia, Ismailia, and Fayoum Governorates, were examined to estimate the population fluctuation of the bud mite Eriophyes mangiferae Sayed, their susceptibility to mite infestation, the relation between the mite infestation and chemical contents of mango buds and the correlation between the bud mite and malformation disease. The highest population occurred during Sept. to Jan. or Feb. and the lowest population was existed during Mar. to Jun. Temperature and relative humidity had no significant effect on the mite population. The

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Negative / Null Result ReportOpen accessAgriculture

Soil Organic Matter Quality and Carbon Sequestration Potential Affected by Straw Return in 11-Year On-Farm Trials in the Czech Republic

Ondřej Sedlář, Jiří Balík, Jindřich Černý et al. · 2025 · Agronomy

Humic substances affect both soil fertility and carbon sequestration. This study aimed to evaluate the effect of straw return on the quality of soil organic matter on arable land commonly farmed by private farmers at 65 different sites between 2012 and 2022 in the Czech Republic (central Europe). In this study, most of the carbon supply was applied in straw (67% of the carbon input on average). No significant correlation between the total carbon input and both parameters of soil organic matter quality and soil organic carbon content was found. The ratio of optical absorbance at 465 to 665 nm (

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Negative / Null Result ReportOpen accessAgriculture

Effect of inoculation with arbuscular mycorrhizas on rooting, weaning and subsequent growth of micropropagated Malus (L.) Moench

Marjatta Uosukainen, Mauritz Vestberg · 1994 · Agricultural and Food Science

The importance of different rooting methods and the effects of arbuscular mycorrhizal (AMF) inoculation on the rooting rate, weaning survival and subsequent growth of microcuttings of Malus rootstock YP and the Finnish crab apple cultivars Hanna and Marjatta were studied in four experiments conducted at the Laukaa Research and Elite Plant Unit, Finland. Sucrose in the in vitro rooting medium gave the best support to weaning survival in comparision with glucose and fructose. Directly rooted microcuttings had a higher survival rate than in vitro rooted microcuttings. AMF inoculation did not impr

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Negative / Null Result ReportOpen accessAgriculture

Factors Influencing Off‑leash Dog Walking in Public Places

Michaela Sediva, Kristyna Holcova, Lenka Pillerova et al. · 2017 · Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis

Little is known about factors that influence owners’ decisions walking their dogs on or off a leash in public places. We examined the effect of the type of public place, dog’s age, sex and size, and human gender on off‑leash dog walking. Observations of 1850 dogs and their owners were made in streets and parks in Brno (Czech Republic). Multiple logistic regression analysis showed no significant effect of human gender on the frequency of unleashed dogs in streets and parks. Off‑leash dog walking was 2.8 times more likely in parks than in streets. Adult dogs were unleashed 1.9 times more likely

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Negative / Null Result ReportOpen accessAgriculture

Sudangrass and sudan hybrids for pasture and green chop

D Sumner · 1963 · California Agriculture

INITIAL TRIALS in 1961 comparing Piper sudan, SX-11 (a sudan x grain sorghum cross) and NK-300 (a forage sorghum) showed that there was no significant difference in total seasonal yield in dry matter production when used as pasture, although Piper outyielded the other two. When used as green chop there was no significant difference between Piper and SX-11, and both significantly outyielded NK-300. These trials were grown in 12-inch rows and harvested throughout the season as each variety reached 24 inches in height as pasture or 50% late boot stage as green chop.

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