Excretion of nitrogen by leguminous plants

Wilson, Paul W.; Burton, J. C.

doi:10.1017/s0021859600050681

Cited by 25 publications

(5 citation statements)

References 16 publications

(20 reference statements)

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“…Excretion of nitrogenous compounds from the nodules of legumes is well documented (9,10) and nitrogen has been reported to be excreted from soybean nodules (13). However, environmental conditions necessary for excretion from soybean nodules are quite exacting, and the rate of excretion varies with the stage of plant maturity (13,14).…”

Section: Discussionmentioning

confidence: 99%

Nitrogen Increases in a Non‐nodulating Soybean Genotype Grown with Nodulating Genotypes¹

Vest

1971

Agronomy Journal

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Seeds of non‐nodulating soybean (Glycine max (L.) Merrill) genotype A62‐8 were mixed in a 1:1 ratio with seeds of nodulating genotypes ‘Delmar’ and ‘Scott’. Prior to planting, the mixtures were inoculated with 7 different strains or combinations of strains of Rhizobium japonicum. A62‐8 mixed with Delmar yielded significantly more with certain inoculum treatments than when the mixture was uninoculated. However, when mixed with Scott the yields of A62‐8 did not differ with inoculum treatments. The seed protein of A62‐8 was higher when the mixtures were inoculated than when uninoculated. The yield and protein percentage of inoculated Delmar and Scott were also significantly higher than the uninoculated checks. The amount of nitrogen fixed in each mixture‐inoculum combination was estimated by using yield and protein data from each genotype.

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Section: Discussionmentioning

confidence: 99%

Nitrogen Increases in a Non‐nodulating Soybean Genotype Grown with Nodulating Genotypes¹

Vest

1971

Agronomy Journal

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“…Attempts have been made in some cases to simulate the conditions of consolidation and effluent release which occur in the larger scale silo. [2][3][4][5][6] Macpherson7 used glass jars and McDonald et aZ. * test tubes fitted with mercury seals to maintain anaerobic conditions while permitting the release of gases, but effluent was not released.…”

Section: Introductionmentioning

confidence: 99%

An evaluation of laboratory ensiling techniques

Wilson

Wilkins

1972

J Sci Food Agric

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Silages made from 18 grasses and 8 legumes in test-tube silos holding 100 g of fresh herbage were compared with those from the same crops ensiled in PVC bags holding 1 tonne of fresh material. For 8 herbages, polythene bags holding 6 kg of fresh material were also employed. Measurement of pH, ammonia-N, lactic acid and volatile acids was made at the end of the storage period (64-155 days). Measurements made on silages from the test-tube silos were closely correlated with those from the PVC bags. The correlation coefficients for ammonia-N (r = +0.978), acetic acid (r = +0.871), propionic acid (r = +0.850) and lactic acid (r = +0.639) were all significant at P i 0.001 and for butyric acid (r = +0.482) at P < 0.05. Fermentations which occurred in polythene bags agreed closely with those in both the smaller test-tube silos and the larger PVC silos. There was good replication of silages from test tubes and polythene bags, the standard deviation for pH for the 26 silages made in test tubes was 0.144 with a coefficient of variation of 3.13 %. The results indicate that laboratory silos have considerable potential in research, allowing a wider variety of crops and treatments to be studied than would have been possible on a larger scale.

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“…Lists are given of high-producing cows and progeny-tested bulls. Wilson (127) describes recording methods in Tasmania. Johansson (19) has made a study of the production records of one herd in Swedish Red-and-White cows, and most of his conclusions are discussed elsewhere, but, amongst others, he reached an indefinite conclusion on the relative importance of environment and heredity.…”

Section: Breed and Heed Construction-inbreedingmentioning

confidence: 99%

Section G. Genetics of Dairy Cattle

Smith

1939

Journal of Dairy Research

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Milk yield Shape of the lactation curve Sex linkage Butterfat Protein Other constituents Colour and flavour Vitamin content Curd tension Conformation Efficiency of production and growth The progeny test Reproduction and wastage Breed and herd construction-inbreeding Tropical Artificial insemination MILK YIELD So long as any studies are made upon the inheritance of milking capacity, so long will there be debate as to the relative influence of heredity and environment. In past reviews on this subject, emphasis has been laid upon the work of Von Patow, who produced the "byre average" as a means for assessing the true genetic worth of dairy cattle. In the last review a paper by Lush was quoted, treating the "byre average" from a purely statistical angle, in which he showed that the method was unlikely to lead to a Mendelian analysis which corresponded to reality. The outstanding paper which now falls for review is by Lortscher(l), a Swiss investigator, who has worked in Edinburgh at the Institute of Animal Genetics, under von Patow at Berlin, and with Dr Schmidt at Zurich. Some 4000 lactation records of 1200 cows from a group of British Friesian herds (Terling-Lavenham) in England provide the data. The yields of the individual cows, reduced to the "byre average" by the von Patow formula, were shown to normalize the frequency of distribution, as predicted by Lush. The figures obtained were found to fit von Patow's genetic hypothesis of milk inheritance. Out of 833 daughter-dam comparisons, in only 0-6% was the genotype of the one not in agreement with that of the other. The genotype of the bulls was ascertained by comparing the genotypes of the daughters to their dams. Of forty-three bulls with at least five tested daughters, all were heterozygous for the three factors belonging to those genetic classes which allow the largest possible combinations of genes when mated to cows of all classes. With the bulls arranged according to the periods they were in service in the herds, the distribution of their daughters, with respect to the seven genetic classes, does not show any increasing asymmetry, and for only two of the forty-three bulls was there a small, but significant, difference between the mean of the daughters and of their dams. Accordingly, the author is forced to the deduction that, according to von Patow's hypothesis and method of investigation, there has been in these herds no success as a result of selective breeding for high milk production during the past 20 years. Employing Krtiger's adaptation of the "byre average" (where the yields are corrected for certain environmental factors before being reduced to the average) no significant difference was

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Excretion of nitrogen by leguminous plants

Cited by 25 publications

References 16 publications

Nitrogen Increases in a Non‐nodulating Soybean Genotype Grown with Nodulating Genotypes¹

Nitrogen Increases in a Non‐nodulating Soybean Genotype Grown with Nodulating Genotypes¹

An evaluation of laboratory ensiling techniques

Section G. Genetics of Dairy Cattle

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Excretion of nitrogen by leguminous plants

Cited by 25 publications

References 16 publications

Nitrogen Increases in a Non‐nodulating Soybean Genotype Grown with Nodulating Genotypes1

Nitrogen Increases in a Non‐nodulating Soybean Genotype Grown with Nodulating Genotypes1

An evaluation of laboratory ensiling techniques

Section G. Genetics of Dairy Cattle

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About

Nitrogen Increases in a Non‐nodulating Soybean Genotype Grown with Nodulating Genotypes¹

Nitrogen Increases in a Non‐nodulating Soybean Genotype Grown with Nodulating Genotypes¹