Open Access. Powered by Scholars. Published by Universities.®
- Discipline
-
- Agronomy and Crop Sciences (11785)
- Plant Biology (10662)
- Physical Sciences and Mathematics (9895)
- Earth Sciences (9569)
- Soil Science (9538)
-
- Plant Pathology (9503)
- Weed Science (9451)
- Agriculture (2069)
- Horticulture (1687)
- Botany (1342)
- Other Plant Sciences (1087)
- Environmental Sciences (435)
- Entomology (366)
- Agricultural Economics (276)
- Plant Breeding and Genetics (246)
- Agricultural Education (226)
- Business (224)
- Animal Sciences (223)
- Agribusiness (203)
- Social and Behavioral Sciences (180)
- Natural Resources Management and Policy (172)
- Environmental Monitoring (151)
- Sustainability (142)
- Engineering (123)
- Environmental Indicators and Impact Assessment (114)
- Biosecurity (111)
- Food Science (111)
- Institution
-
- University of Kentucky (9329)
- University of Nebraska - Lincoln (2597)
- Department of Primary Industries and Regional Development, Western Australia (530)
- International Centre of Insect Physiology and Ecology (443)
- Utah State University (400)
-
- University of Arkansas, Fayetteville (336)
- Universitas Padjadjaran (217)
- Purdue University (128)
- University of the Philippines Los Baños (91)
- South Dakota State University (81)
- Louisiana State University (47)
- California Polytechnic State University, San Luis Obispo (31)
- Western Kentucky University (27)
- Clemson University (25)
- University of Rhode Island (23)
- Murray State University (20)
- Missouri State University (19)
- Edith Cowan University (16)
- Mississippi State University (16)
- Wright State University (14)
- Chapman University (13)
- City University of New York (CUNY) (13)
- SIT Graduate Institute/SIT Study Abroad (12)
- University of Colorado Law School (12)
- Illinois State University (11)
- University of Minnesota Morris Digital Well (10)
- West Virginia University (10)
- Eastern Illinois University (9)
- University of Nevada, Las Vegas (9)
- University of New Hampshire (9)
- Keyword
-
- Grazing (399)
- Nitrogen (243)
- Western Australia (236)
- Alfalfa (216)
- Yield (205)
-
- Sheep (189)
- Grassland (183)
- Cattle (180)
- Forage (175)
- Maize (166)
- Pasture (166)
- Climate change (153)
- Arkansas (151)
- Utah (151)
- Digestibility (149)
- Silage (143)
- Forage quality (140)
- Biodiversity (135)
- Phosphorus (131)
- Vegetables (131)
- Legumes (125)
- Nutritive value (123)
- Livestock (120)
- Variety trials (119)
- Irrigation (116)
- Soybean (116)
- Management (114)
- Trifolium repens (114)
- Intake (113)
- Stocking rate (111)
- Publication Year
- Publication
-
- IGC Proceedings (1977-2023) (9261)
- United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications (1086)
- Department of Agronomy and Horticulture: Faculty Publications (1038)
- All Peer-Reviewed Publications (443)
- UAES Bulletins (260)
-
- Jurnal Kultivasi (217)
- Arkansas Agricultural Experiment Station Research Series (168)
- Department of Agronomy and Horticulture: Dissertations, Theses, and Student Research (159)
- Graduate Theses and Dissertations (118)
- INTSORMIL Impacts and Bulletins (94)
- The Philippine Agricultural Scientist (91)
- UAES Circulars (90)
- Bulletins 4000 - (77)
- Midwest Vegetable Trial Reports (59)
- Purdue Fruit and Vegetable Research Reports (59)
- Agroforestry Notes (USDA-NAC) (54)
- Electronic Theses and Dissertations (46)
- Grains and other field crops factsheets (44)
- Grain and Other Field Crops Research Articles (43)
- Theses and Dissertations--Plant and Soil Sciences (43)
- Southern Soybean Disease Workers: Conference Proceedings (38)
- PestFacts WA (36)
- Natural resources published reports (33)
- Farm Systems and Economics published reports (31)
- LSU Master's Theses (28)
- Biosecurity factsheets (24)
- Theses and Dissertations (24)
- Masters Theses & Specialist Projects (23)
- Horticulture published reports (22)
- Graduate Theses/Dissertations (19)
- Publication Type
- File Type
Articles 31 - 60 of 14769
Full-Text Articles in Agricultural Science
Factors Influencing The Formation Of Effluent In Forage Ensiling, G Peters, F Weissbach
Factors Influencing The Formation Of Effluent In Forage Ensiling, G Peters, F Weissbach
IGC Proceedings (1977-2023)
The amount of effluent formed in ensiling forage crops depends, above all, on the dry matter content of the initial material, on the pressure exerted on the feed stock, and on the kind of crop ensiled. Expected values of effluent amount were derived from model experiments and calculations. Adequate wilting of suitable forage crops will allow to reduce or prevent effluent formation. The degree of wilting required depends on the height of the feed stock and on the kind of silo used. The limit of 30 % DM in initial material, so far generally accepted for effluent formation, only applies …
Wilted Silage Production For The Supply Of Large Cattle Populations, Wilhelm Schwandt
Wilted Silage Production For The Supply Of Large Cattle Populations, Wilhelm Schwandt
IGC Proceedings (1977-2023)
For supplying large cattle populations with high-quality roughage it is necessary to make available big forage batches of good and largely uniform quality. From 4,675 hectares of seeded grassland, the ZBE Pflanzenproduktion Ferdinandshof(Ferdinandshofinter-farmestablishment for crop production) every year produce in good quality more than 80,000 tons of wilted silage. The material and technical basis of this forage production along industrial lines consists of powerful machine systems that are operated in multi-machine complexes, the operators doing shift work.
Fundamentals Of Technique For The Employment Of Formic Acid In Ensiling Of Green Forage, O Knabe, E Muller
Fundamentals Of Technique For The Employment Of Formic Acid In Ensiling Of Green Forage, O Knabe, E Muller
IGC Proceedings (1977-2023)
A model was used to work out fundamentals of technique for the employment of formic acid in ensiling of wilted green· forage under industry-like conditions of production. From the parameters: result of preservation, extent of dry matter losses, costs, and profit, the optimum length of the wilting phase in the field and the usefulness of combining the ensiling of wilted green forage with the employment of formic acid have been determined. The following practice is recommended for optimum planning of the technique: field curing of green forage for two days followed by preservation either as wilted silage or with admixture …
Decomposition Processes And Effects Of Nitrate In Ensiling Green Forage, Ehrengard Hein, F Weissbach
Decomposition Processes And Effects Of Nitrate In Ensiling Green Forage, Ehrengard Hein, F Weissbach
IGC Proceedings (1977-2023)
Summary As forage production is increasingly intensified, forage batches with increased nitrate content have to be handled. The forage nitrate may be decomposed during the ensiling process. A major portion of the nitrate, however, is retained in stable lactic acid silage. Only spoilt ilages are free from nitrate. Byfar the greater part of the nitrate is reduced to ammonia. Gaseous nitrate decomposition products are produced to only a small extent. They almost exclusively consist of nitrogen monoxide. The formation of ammonia from nitrate was experimentally demonstrated by means of 15N. The reduction of nitrate involved in anaerobic post-fennentation is associated …
Changes Of The Carbohydrate Fraction In Grasses In The Course Of Vegetation And Effects On Fermentability, W Seyfarth, O Knabe, H Arnold
Changes Of The Carbohydrate Fraction In Grasses In The Course Of Vegetation And Effects On Fermentability, W Seyfarth, O Knabe, H Arnold
IGC Proceedings (1977-2023)
In experimental ensiling of Dactylis glomerata L., Lolium perenne L., Festuca pratensis Huds., Phleum pratense L., and Lolium multijlorum Lamk., the relations were studied that exist between individual plant carbohydrates and various fermentation products. There was a negative influence of sugars of the galactose group and of pentoses on the formation of silages rich in lactic acid. Growing experiments have shown the beginning of emergence of inflorescences to be the most favourable time of cutting in regard to the fermentability of green forage plants. The experimental results emphasize the necessity of more precisely describing the carbohydrate content of forage plants. …
Investigations Into The Prevention Of The Aerobic DeterioraTion Of Maize Silage, Michael K. Woolford, John E. Cook
Investigations Into The Prevention Of The Aerobic DeterioraTion Of Maize Silage, Michael K. Woolford, John E. Cook
IGC Proceedings (1977-2023)
Propionic acid and the antibiotic pimancm have been studied as potential agents for increasing the aerobic stability of maize silage. In separate experiments propionic acid at 1.25 % and pimaricin at 0.026 % of the dry matter stabilized silage for 19 and 13 days respectively, the longest storage periods examined. The influence of these agents in preventing increase in temperature was substantiated by data on microbial populations, losses in dry matter and changes in pH.
New Procedures Of Preserving Beet Tops, Hedvika Maskova, Jiri Havelik
New Procedures Of Preserving Beet Tops, Hedvika Maskova, Jiri Havelik
IGC Proceedings (1977-2023)
The possibility was tested of preserving chopped (homogenized) beet tops in experimental tower silos. The treatments without preservatives were compared with treatments using propionic acid (0.5 %) and allylisothiocyanate (1: 10,000). Silage quality, dry matter losses, and secondary fermentation 24, 72, 168, and 240 hours after unloading were determined. Chopping of beet tops was found to have a positive effect on the utilization of the silo volume and on the mechanization of silage handling, and to avoid the need of supplemental compaction. Allylisothiocyanate and propionic acid had a favourable effect on the preservation process and helped to cut losses caused …
Quality Of Feeding Stuffs From Herbage As Influenced By Ensiling And Other Preservation Methods, V A. Bondarev
Quality Of Feeding Stuffs From Herbage As Influenced By Ensiling And Other Preservation Methods, V A. Bondarev
IGC Proceedings (1977-2023)
Artificial drying is at present the most perfect way of preserving cut herbage. It is not only the most nutrient-saving method, but it also secures best quality of feeding stuffs. In regard to the production cost, however, artificial drying is inferior to the making of wilted silage from herbage. The crop to be made into wilted silage should be wilted down to 50-55 p.c. moisture content. Picking up herbage with a moisture content of 60 p.c. and more is nothing more but an emergency step. The ensiling of grasses with admixture of formic acid gives a feeding stuff equivalent in …
Comparison Off Ormic Acid And A Formaldehyde + Formic Acid Mixture As Silage Additives, Per Lingvall
Comparison Off Ormic Acid And A Formaldehyde + Formic Acid Mixture As Silage Additives, Per Lingvall
IGC Proceedings (1977-2023)
Clover-grass silages have been made in tower silos using formic acid or a formaldehyde +formic acid mixture (67: 33) as additives. Untreated controls were included. The storage losses were recorded and the feeding values of the different silages compared in experiments with growing heifers. Both additives decreased storage losses and improved the feed efficiency measured as consumption of metabolizable energy per kg weight gain.
The Effect Of Addition Of Formic Acid, With Or Without Formalin, On The Conservation Quality, Digestibility, Nutritive Value, And Nitrogen Balance Of Direct-Cut Silage, C Demarquilly, Elisabeth Grenet, J P. Dulphy
The Effect Of Addition Of Formic Acid, With Or Without Formalin, On The Conservation Quality, Digestibility, Nutritive Value, And Nitrogen Balance Of Direct-Cut Silage, C Demarquilly, Elisabeth Grenet, J P. Dulphy
IGC Proceedings (1977-2023)
From 34 standing crops of grasses or legumes, 93 direct-cut silages were prepared: 33 without additive, 37 with formic acid (3.5 or 5 1/t), 10 with formic acid and 1.5 1/t formalin, 15 with formic acid and 3.5 to 5 1/t formalin. The conservation quality of the silages was improved by the addition of formic acid and even further by the mixture of formic acid and formalin. Silage digestibility is similar to that of the corresponding green forage, but the addition of formalin considerably reduces protein digestibility (by 2 to 8 points). The voluntary intake of silage is lower than …
The Influence Of Formalin Addition On The Quality Of Silages Made Of Meadow Grass, Alfalfa Or Red Clover, Witold Podkowka, Janina Janas, Jan Mikolajczak
The Influence Of Formalin Addition On The Quality Of Silages Made Of Meadow Grass, Alfalfa Or Red Clover, Witold Podkowka, Janina Janas, Jan Mikolajczak
IGC Proceedings (1977-2023)
From 1974 to 1976, experiments were carried out on the influence of different doses of formalin and of mixtures of formalin + other preservatives (formalin + sodium benzoate; formalin + sulphuric acid) on the quality of silages made of meadow grass, alfalfa, or red clover, respectively. The digestibility of crude protein in the silages made of alfalfa or red clover was examined and defined on sheep. The investigations revealed that the effect of formalin was dependent on the raw material ensiled. Ensiling meadow grass or red clover yielded good results, but there was almost no effect after ensiling alfalfa. Good …
The Effects Of Mixtures Of Formalin And Acid On Silage Fermentation, Robert F. Wilson, Roger J. Wilkins
The Effects Of Mixtures Of Formalin And Acid On Silage Fermentation, Robert F. Wilson, Roger J. Wilkins
IGC Proceedings (1977-2023)
Three experiments are described in which herbages were ensiled in test-tube silos without additive or after the addition of mixtures containing formalin with formic, sulphuric or phosphoric acid in order to restrict fermentation in the silo. Silages containing less than 5 % of the dry matter as fermentation acids and with low contents of ammonia were produced with mixtures containing either 0.1 % of the fresh crop weight as formaldehyde with 10 meq of formic or sulphuric acid/ 100 g of crop or with 0.2 % of formaldehyde with 5 meq of either acid. Phosphoric acid was less effective than …
Studies Regarding The Effects And The Optimal Do Sis Of Formic Acid In Ensiling High-Protein Forages, F Weissbach, Ehrengard Hein, L Schmidt
Studies Regarding The Effects And The Optimal Do Sis Of Formic Acid In Ensiling High-Protein Forages, F Weissbach, Ehrengard Hein, L Schmidt
IGC Proceedings (1977-2023)
The method for wilted silage production along industrial lines should be completed by adding an effective preservative to the green forage when weather conditions do not allow its adequate wilting. Formic acid has proved suitable for that purpose. To obtain reliable preservation effects it is necessary to consider the limits within which formic acid has the desired effect, as well as the dosis required for the prevailing conditions. These figures must be derived for a particular forage crop from its dry matter content (DM %) and sugar/ buffering capacity ratio (S/BC). The range over which formic acid has the desired …
Studies On The Host Plant Range Of Claviceps Purpurea (Fr.) Tul. Influence Of Host Plant On Shape And Size Of Conidia, Kate Frauenstein
Studies On The Host Plant Range Of Claviceps Purpurea (Fr.) Tul. Influence Of Host Plant On Shape And Size Of Conidia, Kate Frauenstein
IGC Proceedings (1977-2023)
In case of Claviceps purpurea(Fr.) Tul. different physiological forms exist that stand out for preferred infestation of certain species of grasses. In the conidia contained in honeydew longish and circular types can be distinguished. The shape of the conidia, however, is determined primarily by the respective host plant and cannot be regarded as characteristic feature of a special form of Claviceps purpurea (Fr.) Tul.
Virus Diseases On Leguminous Forage Crops In The German Democratic Republic, H E. Schimdt, H Kleinhempel, H B. Schmidt, V Valenta, M Musil
Virus Diseases On Leguminous Forage Crops In The German Democratic Republic, H E. Schimdt, H Kleinhempel, H B. Schmidt, V Valenta, M Musil
IGC Proceedings (1977-2023)
Based on serological, electronoptical investigations and using test plants, 13 viruses were detected on leguminous forage crops. Most of the 44 natural virus-host combinations were caused by infections with bean yellow mosaic virus, alfalfa mosaic virus, and pea enation mosaic virus.
On The Importance And Control Of Amaurosoma Armillatum Zett. And A. Flavipes Fall. In Seed Stands Of Phleum Pratense L., Manfred Ahnert
On The Importance And Control Of Amaurosoma Armillatum Zett. And A. Flavipes Fall. In Seed Stands Of Phleum Pratense L., Manfred Ahnert
IGC Proceedings (1977-2023)
On the basis of three-year investigations conducted in the County of Karl-Marx-Stadt, an outline is given of both the economic importance and control of Amaurosoma spp. Special emphasis is laid on the factors that influence abundance and infestation, on the damage from larval eating on the false spikes, on seed losses, and on the results of experiments for chemical control. Furthermore, the possibilities are discussed that exist for limiting infestation levels by tillage and crop husbandry operations on the transition to industrial methods of production in socialist agriculture.
Etiology And Control Of Total White Ears In Grass Stands For Seed Production, Theo Wetzel
Etiology And Control Of Total White Ears In Grass Stands For Seed Production, Theo Wetzel
IGC Proceedings (1977-2023)
The total white ears is one of the major diseases of forage grasses grown for seeds. Heavy losses are common in fescue species and in Poa pratensis L. While non-parasital factors can be neglected as a cause of the white ears, the tarsonemid mites, especially the species Siteroptes graminum (Reuter) and Steneotarsonemus spirifex (Marchal), are major animal pests. Limiting the period of use of such seed grass stands to a maximum of 2 years and the application of lindane and oleo-parathion preparations have proved effective control measures.
Some Consequences Of A Prolonged Absence Of Invertebrates From A Perennial Rye Grass Sward, R O. Clements, I F. Henderson
Some Consequences Of A Prolonged Absence Of Invertebrates From A Perennial Rye Grass Sward, R O. Clements, I F. Henderson
IGC Proceedings (1977-2023)
In a long-term experiment, substantial increases in herbage yield, of up to 24 %, have been obtained by applying large experimental doses of pesticides to a sward of perennial ryegrass (Lolium perenne). Good control of all the invertebrate fauna was achieved. The long-term absence of beneficial species such as earthworms has led to deleterious effects on soil structure with a consequent effect on yield improvements. Other observations show that the layer of leaf litter on the soil surface of pesticide-treated plots has built up considerably and that the bulk density of the soil in these plots has increased. …
Soil Nematodes And Forage Production Of Some Cool Season Grasses, C S. Hoveland, R L. Haaland, R Rodriguez-Kabana
Soil Nematodes And Forage Production Of Some Cool Season Grasses, C S. Hoveland, R L. Haaland, R Rodriguez-Kabana
IGC Proceedings (1977-2023)
Nematodes in sandy soils of the southeastern U.S.A. are a major factor in reducing forage yields and stands of cool season perennial grasses such as orchardgrass (Dactylis glomerata L.), tall fescue (Festuca arundinacea Schreb.), and phalaris (Phalaris aquatica L.). Soil treatment with methyl bromide or carbofuran (2,3-dihydro-2,2-dimethyl-7-benzofuranyl methylcarbamate) nematicide has resulted in 30 to over 300 % increases in forage yields of these perennial grasses and of cool season annual grasses such as rye (Secale cereale L.) and annual ryegrass (Lolium multiflorum Lam.). • Root pruning by the nematodes reduces effective rooting depth in terms of …
Conditions And Possibilities For The Directed Control Of Apion Species In Large Red Clover Seed Stands, Helmut Bochow, Christian Zchimmer, Helga Delinsky
Conditions And Possibilities For The Directed Control Of Apion Species In Large Red Clover Seed Stands, Helmut Bochow, Christian Zchimmer, Helga Delinsky
IGC Proceedings (1977-2023)
For direction in the control of blossom-damaging Apion species in red clover seed stands, a programme was developed to observe the pests by determining their population density on plants and blossom buds. In dependence on a threshold in the degree of pest attack, applications of insecticides were orientated to the time when the second clover growth developed green blossom buds. Best results were obtained with polychlorcamphen in higher dosages and at high temperatures. Applications of lindane, kelevan, and methoxychlor + lindane were not successful. The most frequent species of Apion were A. trifolii and A. apricans.
Relations Between Lucerne Grown For Forage And Insect Pests. Their Importance For The Control Of These Pests, Rene Bournoville
Relations Between Lucerne Grown For Forage And Insect Pests. Their Importance For The Control Of These Pests, Rene Bournoville
IGC Proceedings (1977-2023)
The repartition of the main insect pests of lucerne forage production is described: during the sowing year weevils are less abundant than in the following years, the specific composition of the Sitona is also different. Several tables show the repartition of these pests on the different growth cycles: weevils are more abundant on the 1st and 2nd growths, biting insects on the 3rd and 4th. Date of cutting offers some means of control especially in autumn by preventing the populations of the pea aphid and eliminating the larvae of Apion pisi. We compare a North American variety selected for its …
Results Of Herbicide Application In An Integrated System Of Alfalfa/Field Grass Production, Klaus Sieberhein, Inge Stracke, Fritz Hofmann, Irmgard Meier
Results Of Herbicide Application In An Integrated System Of Alfalfa/Field Grass Production, Klaus Sieberhein, Inge Stracke, Fritz Hofmann, Irmgard Meier
IGC Proceedings (1977-2023)
The experimental results so far available reveal that in an integrated system of alfalfa/field grass production the systematic control of certain weed species will help to improve crop yield and crop quality, to facilitate tillage, to save material, and to cut labour expenditure. Likewise, is has been proved that the efficient application of herbicides is likely to gain ground as crop production is being increased through socialist intensification.
Resistance Of Tropical Pasture Species To Herbicides, Punjabrao Amritrao Chadhokar
Resistance Of Tropical Pasture Species To Herbicides, Punjabrao Amritrao Chadhokar
IGC Proceedings (1977-2023)
The effect of 2,4-D and 2,4,5-T at 0.08, 0.16, 0.32, and 0.48 per cent concentration in 7001/ha water on the resistance of young and old tropical legumes, and the effect of dalapon at 4 and 8 kg/ha and of glyphosate at l and 2 kg/ha in 1125 1/ha water on the resistance of the old tropical grasses were assessed. Amongst the legumes, stylo showed the highest resistance and siratro the least, both at young and old stages of growth, followed by puero and Greenleaf desmodium at the old stage, especially at lower rate of application of 2,4-D. The effect of …
Experimental Results With Various Herbicides In Established Alfalfa, Taib Saric, Refik Numic
Experimental Results With Various Herbicides In Established Alfalfa, Taib Saric, Refik Numic
IGC Proceedings (1977-2023)
5-year experiments with herbicides were run in the mixture of alfalfa, red clover, timothy grass, and Italian ryegrass. On untreated plots, in the 5-year average 72 weed plants were found per 1 m2 , belonging to 66 weed species. Among them most numerous were: Stellaria media, Veronica agrestis, Poa annua, Lamium purpureum,Taraxacum officinale, and Capsella bursa pastoris. The most efficient herbicide was Etazin, killing 88 % of weeds. None of the applied herbicides controlled perennial weeds. Etazin was tolerated by alfalfa, but was toxic to the other three crops. Kerb, Kerb-Mix, and Multitok were toxic to sown grasses, while …
Results Of Controlling Couchgrass (Agropyron Repens (L.) P.B.) With Sys 67® Omnidel (Na-Dcp) As A Practice To Intensify Forage Crop Production, Klaus Sieberhein, Werner Kuntze, Walter Drauschke
Results Of Controlling Couchgrass (Agropyron Repens (L.) P.B.) With Sys 67® Omnidel (Na-Dcp) As A Practice To Intensify Forage Crop Production, Klaus Sieberhein, Werner Kuntze, Walter Drauschke
IGC Proceedings (1977-2023)
As new farming practices have developed, the methods of couchgrass control before growing forage crops have changed, too. To ensure adequate conditions for the establishment of forage crops, infestation with couchgrass can be successfully controlled by application of SYS 67® Omnidel. This practice also promotes adequate stand density and persistence of the forage crops and provides optimum conditions for the further intensification of forage crop production. The integrated control measures described should be taken before sowing, i.e. between late summer and autumn.
The Improvement Of Juncus Meadows On Temporarily Waterlogged Soils In The Socialist Republic Of Romania, Nikolae Simtea
The Improvement Of Juncus Meadows On Temporarily Waterlogged Soils In The Socialist Republic Of Romania, Nikolae Simtea
IGC Proceedings (1977-2023)
Experiments were carried out to improve meadows on temporarily waterlogged soils with 25 % of Juncus spp. in the sward. Under grazing conditions, Juncus was exterminated by applying 5 kg 2,4-D per hectare and year in the course of two years and cutting after each treatment. Complete destruction of Juncus spp. was reached by means of ploughing up and reseeding. After that practice Dactylis glomerata developed best. The seeded meadow responded well to fertilization. The highest yield increment (6.02 t DM/ha) was reached at fertilizer rates of 240 kg N, 90 kg P, and 90 kg K per hectare. The …
Findings On Interactions Between Herbicide Application And The Intensification Factors Nitrogen Fertilization And SuppleMental Sprinkling In Field Grass Stands, Klaus Sieberhein, Horst Stacke
Findings On Interactions Between Herbicide Application And The Intensification Factors Nitrogen Fertilization And SuppleMental Sprinkling In Field Grass Stands, Klaus Sieberhein, Horst Stacke
IGC Proceedings (1977-2023)
The experimental results so far obtained show that there may be interactions between herbicide application and the intensification factors nitrogen fertilization and supplemental sprinkling. Forthcoming investigations will help deepening the knowledge in this complex sphere. The research results may contribute to establishing optimum conditions regarding the use of the different factors of intensification, including herbicides, as a major prerequisite for obtaining maximum and secure yields from field grass.
On The Occurrence In Grassland Of Heterodera Longicaudata Seidel, 1972 And H. Punctata Thorne, 1928, Mechthild Seidel
On The Occurrence In Grassland Of Heterodera Longicaudata Seidel, 1972 And H. Punctata Thorne, 1928, Mechthild Seidel
IGC Proceedings (1977-2023)
Studies into the occurrence of H. longicaudata have shown the widespread presence of this species, in addition to H. punctata, in all Districts of the County of Rostock. About 66 % of all grassland sites investigated were found to be infested. The degree of infestation increased along with the cultivation of excellent host plants as well as along with rising pH values. Both species were recordable also from arable land with high cropping concentrations of forage grasses and cereals. In the latter case, however, only 16 % of all fields investigated were infested, most of them to minor degrees.
Mechanical And Chemical Weed Control In Perennial Forage Plant Stands, Yuri Kanygin, Tamara Fedonina
Mechanical And Chemical Weed Control In Perennial Forage Plant Stands, Yuri Kanygin, Tamara Fedonina
IGC Proceedings (1977-2023)
An outline is given of the results of weed control in red clover, alfalfa, goat's rue, and timothy. In red clover stands for seed production, Basagran and Basagran M (1.5 to 3.01/ha) reached high selectivity and efficiency when combined with mechanical cultivation, weed infestation in the stands being reduced by 78-89 % and the share of weed seeds in clover seeds going down to 8.3 %- The advantages of Basagran (1.5 1/ha) over 2,4-DB (2.0 I/ha) were evident in alfalfa. Treatment with Basagran (3.0 1/ha) and 2,4-DB (2.0 1/ha) of goat's rue in the first year of growth helped to …
Irrigation With Sewage -An Effective Procedure For InCreasing The Yield Performance Of Grassland As Well As For Protecting Inland Waters Against Pollution, V M. Novikov, N A. Kovaleva, V P. Sayapin, L F. Mikheeva, M I. Demina
Irrigation With Sewage -An Effective Procedure For InCreasing The Yield Performance Of Grassland As Well As For Protecting Inland Waters Against Pollution, V M. Novikov, N A. Kovaleva, V P. Sayapin, L F. Mikheeva, M I. Demina
IGC Proceedings (1977-2023)
The utilization of sewage for irrigation purposes is an effective procedure for increasing the yield performance of grassland as well as for protecting inland waters against pollution. Compared with irrigation only during the growing season, all-season use of sewage is more effective in increasing forage production and reducing both the quantity of sewage diverted into inland waters and the deficit of irrigation water. By way of science-based choice of the irrigation regime, the perennial forage plant species, and their kind ofutilization, 8.0-10.0 tons and more of high-quality dry matter can be obtained per hectare, with 6,000-7,000 m3 of sewage being …