Open Access. Powered by Scholars. Published by Universities.®

Plant Pathology Commons™

Open Access. Powered by Scholars. Published by Universities.®

Discipline
Institution
Keyword
Publication Year
Publication
Publication Type
File Type

Articles 811 - 840 of 11583

Full-Text Articles in Plant Pathology

The Application Of Remote Sensing Technology To The Resource Investigation Of Inner Mongolia, Chen Kai, Li Bo Jul 2025

The Application Of Remote Sensing Technology To The Resource Investigation Of Inner Mongolia, Chen Kai, Li Bo

IGC Proceedings (1977-2023)

This paper is a comprehensive report and explanation of a large scale research project carried out for the investigation of grassland in the Inner Mongolia Autonomous Region, China. In the paper, the nature of the grassland resources in Inner Mongolia, the purposes of the research project, the organization of the research forces, the methods applied in the research, the chief results of the project, and the problems to be further solved have all been briefly discussed.

Go to article

An Application Of Fuzzy Cluster Analysis In The Classification Of Grazing Retrogressive Succession Stages Of The Stipa Steppe, Chen Qing Cheng Jul 2025

An Application Of Fuzzy Cluster Analysis In The Classification Of Grazing Retrogressive Succession Stages Of The Stipa Steppe, Chen Qing Cheng

IGC Proceedings (1977-2023)

In this paper, two methods of Fuzzy Cluster Analysis-the A cut-set classification and the Interative Self-organization Data Analysis technique (ISODATA method)-are introduced to the classification of plant communities. The results show that using these methods, one may classify a number of sample quadrats obtained from vegetation mosaic which fails to possess definite lines among communities by means of random sampling rapidly and correctly. Moreover, it seems that the combination of the principal components analysis (PCA) and the ISODATA method in the classification is successful in reducing the subjective influence of the research worker and their results can be compared and …

Go to article

Models For Short Term Prediction Of Grazing Grassland Productivity: Population Model Vs. Ecosystem Model, M Shiyomi, N Koyama, M Tsuiki Jul 2025

Models For Short Term Prediction Of Grazing Grassland Productivity: Population Model Vs. Ecosystem Model, M Shiyomi, N Koyama, M Tsuiki

IGC Proceedings (1977-2023)

Ecosystem models to analyse energy and matter flows in Japanese grazing grassland have been developed during the past 10 years. These models have contributed much to ecosystem studies but they are not suitable, from the farmers' viewpoint, for predicting grassland productivity for two reasons: (1) as they have generally large and complex structures, they do not fit individual farmers' small personal computers; and (2) they contain so many variables that farmers cannot measure precise values of all of them in their fields. In this paper, we propose six small simple population models for describing plant and animal growth which can …

Go to article

Energy Conversion Efficiencies In Grazing Grassland At Different Stocking Rates, S Takahashi, M Shiyomi, T Akiyama, T Okubo Jul 2025

Energy Conversion Efficiencies In Grazing Grassland At Different Stocking Rates, S Takahashi, M Shiyomi, T Akiyama, T Okubo

IGC Proceedings (1977-2023)

The effect of stocking rates on the energy conversion efficiency was examined on a grazing pasture over an eight year period from 1974. Annual stocking rates were in the range of 117-523 animal-unit days (AUD)/ha over eight years. Photosynthetically active radiation, net primary production by herbage plants and the amounts consumed by grazing cattle were measured during the plant growing season (from late March to late November). For estimations of stored energy in cattle, ARC feeding standards (1965) using the daily increment for body weight were adopted. Energy conversion efficiencies from solar energy through plants and animals were calculated as …

Go to article

Energy Flow Through Cell Wall And Cellular Contents Of Plants On Grazing Pasture, N Koyama, M Tsuiki, M Shiyomi Jul 2025

Energy Flow Through Cell Wall And Cellular Contents Of Plants On Grazing Pasture, N Koyama, M Tsuiki, M Shiyomi

IGC Proceedings (1977-2023)

Energy flow from sun to grazing animals, especially the functions of cellular contents (CC) and cell wall (CW) in this regard, was examined at the Fujinita Experimental Grazing Pasture of the National Grassland Research Institute, Tochigi which is situated at 36 °55'N and 136 °58 E, with a mean annual air-temperature of 12.3 °C and mean annual rainfall 1631 mm. Grazing experiments were conducted under two different nitrogen application regimes in 1983 and 1984. The net primary production was 53 and 33 Mkcal/ha/yr for plot of high (HN) and low (LN) nitrogen applications, respectively. Dry matter of the standing crop …

Go to article

Comparison Of Energy Conversion During Forage Production And Supplemental Investment Efficiencies In Different Livestock Feed Production Systems, T Akiyama, M Shiyomi, S Takahashi Jul 2025

Comparison Of Energy Conversion During Forage Production And Supplemental Investment Efficiencies In Different Livestock Feed Production Systems, T Akiyama, M Shiyomi, S Takahashi

IGC Proceedings (1977-2023)

Solar and supplemental energy dynamics were compared for several years in three different livestock feed production systems including, a) double cropping with barley and corn for whole-crop-silage, b) perennial cutting meadow of orchardgrass for hay-making, and c) grazing by fattening Holsteins with six cool-season grasses. The results obtained are; (1) In the double cropping system, the plot receiving slurry manure (S2) maintained the highest energy yield (3.86xl05MJ, 92,350 Meal of energy for each hectare of land, or 0.94% of overall efficiency as compared to global solar radiation) throughout the 5-year experimental period. (2) From the orchardgrass meadow, 1. 93x105MJ, 46,130 …

Go to article

Interaction Of Component Cultivars In Grass-Alfalfa Mixtures, T Wakimoto, Y Satake, M Tagawa, T Kitamori Jul 2025

Interaction Of Component Cultivars In Grass-Alfalfa Mixtures, T Wakimoto, Y Satake, M Tagawa, T Kitamori

IGC Proceedings (1977-2023)

Red clover and white clover do not produce sufficiently for mixtures for hay or silage in the central district of Hokkaido. Alfalfa, for its part, is not yet widely cultivated in this district despite its superior longevity and higher productivity. The objective of this research is to verify the compatibility of alfalfa cultivars mixed with orchardgrass and timothy to give the grass species suited well to local conditions. Orchardgrass and timothy cultivars were mixed with a red clover cultivar and an alfalfa cultivar in Experiment 1 and with erect, medium and prostrate type alfalfa cultivars in Experiment 2, in one …

Go to article

A Comparison Of The Herbage Yield Of Three White Clovers (Trifolium Repens) Of Differing Leaf Size, M L. Smetham Jul 2025

A Comparison Of The Herbage Yield Of Three White Clovers (Trifolium Repens) Of Differing Leaf Size, M L. Smetham

IGC Proceedings (1977-2023)

A good level of cool season activity is desirable in pasture plants for use in New Zealand. However, while the mechanisms contributing to this have been intensively studied in grasses, this is not so for legumes. An experiment was designed to study the components of vegetative yield contributing to the cool season growth of three white clover ecotypes of differing leaf size. Measurements of growth on a marked stolon showed that during winter, spring and early summer the DM yield ( consisting of leaf growth on a tagged stolon) of the large-leaved ecotype exceeded that of the smaller-leaved white clover …

Go to article

Survival Of A White Clover Cultivar In New Zealand Hill Pasture, J.F L. Charlton, J R. Sedcole Jul 2025

Survival Of A White Clover Cultivar In New Zealand Hill Pasture, J.F L. Charlton, J R. Sedcole

IGC Proceedings (1977-2023)

100 'Grasslands Huia' white clover plants were planted in autumn 1979 at each of 3 hill pasture sites with wet, moist or dry annual soil moisture status. Surviving plants were counted and measured for leaf number, mean leaf size and plant spread 4 times per year for 4 years. Generally, plants with more leaves or greater spread were more likely to survive. Survival was greatest (27% after 4 years) at the dry site, which had fewer plant pests and a grazing management that permitted rapid spring growth.

Go to article

Growth Characteristics Of Subterranean Clover Cultivars In Mixtures At Varying Temperature And Moisture Levels, G.W King, A M. Bowman Jul 2025

Growth Characteristics Of Subterranean Clover Cultivars In Mixtures At Varying Temperature And Moisture Levels, G.W King, A M. Bowman

IGC Proceedings (1977-2023)

Subterranean clover cultivars are being increasingly found in mixed strain sowings in Australia. Mixed sowing or oversowing may be done deliberately to overcome the problem of the high oestrogen content of some older strains in established pastures. However, some of the existing cultivars have aggressive growth characteristics, and may not be easy to replace. Identification of competitive characteristics and competition between strains needs examination. Three cultivars (Larisa, Yarloop and Woogenellup) were grown alone and in mixtures at three temperature levels and either at field capacity or at below 50% of field capacity in glasshouse trials. Larisa appeared to be suppressed …

Go to article

Some Questions On Evaluating The Role Of Shoot And Root Competition By Partition Technique, T Yamada Jul 2025

Some Questions On Evaluating The Role Of Shoot And Root Competition By Partition Technique, T Yamada

IGC Proceedings (1977-2023)

The effects of soil and aerial partitions separating shoot and root competition on plant weight of competing species were compared between the experimental data in six studies previously reported by some authors. Soil partition was found to be mainly operative in five experiments using two grass species so that a winner species can be promoted in growth while a loser species suppressed. In one study, in which a grass-clover combination was used, in contrast, aerial partition was effective in promoting the growth of a winner and in suppressing that of a loser. Corresponding to these effects, in general, plant weights …

Go to article

Analysis And Simulation Of Competition Between Clover And Grass In Mixed Pastures, Tony R.O Field, P Roger Ball Jul 2025

Analysis And Simulation Of Competition Between Clover And Grass In Mixed Pastures, Tony R.O Field, P Roger Ball

IGC Proceedings (1977-2023)

Maximum herbage accumulation rates of perennial ryegrass and white clover in monocultures can be predicted fr measurements om of leaf production responses to environmental variables. A model has been developed to take the next step and estimate growth of ryegrass and clover in mixtures using data from monocultures studies. Prediction of competitive dairyfarms. relationships Widespread was required observations as part indicate of an that white investigation clover of in mass mixtures balances is for often nitrogen severely (N) in constrained mixed by pastures its on companion New Zealandgrasses.

Go to article

The Species Composition Index: A Tool For Explaining Variability In Steer Grazing Experiments, Henry A. Fribourg, J B. Mclaren Jul 2025

The Species Composition Index: A Tool For Explaining Variability In Steer Grazing Experiments, Henry A. Fribourg, J B. Mclaren

IGC Proceedings (1977-2023)

Forage growth and consumption, and animal performance were estimated in two beef steer (Bos sp.) backgrounding experiments concurrently with several environmental, plant, and animal characteristics. This paper describes, evaluates and validates a technique that combines the dynamic changes in species composition of grass-legume pastures over time into a Species Composition Index (SCI). This index then can be related to the effects of year, season, grazing pressure, forage quality, precipitation, and air temperature on forage growth and consumption, and animal performance. The SCI was compared to the traditional classification variable 'treatment' to describe seven different pasture conbinations of forage species for …

Go to article

Root Competition And Productivity In Mono-And Binary Association Of Four Forage Species, Ho-Jin Lee, Myeong-Je Cho Jul 2025

Root Competition And Productivity In Mono-And Binary Association Of Four Forage Species, Ho-Jin Lee, Myeong-Je Cho

IGC Proceedings (1977-2023)

A field experiment was conducted to investigate the root system and forage production in intra- and inter-specific stands of four forage crops; orchard grass, smooth bromegrass, ladino clover, and alfalfa. Crop competitions were noticed from early growth stage and affected to crop growth and forage production significantly. Orchardgrass was the most aggressive species and ladino clover the least. But mixture of orchardgrass-ladino clover had the highest forage production and the highest root density at the end of first-year-growth. In the evaluation of general competition ability (GCA), orchardgrass with the highest GCA was more dominant in root competition than in shoot. …

Go to article

Aspects Of Indicator Plants As Criteria For Grassland Development In Wetland, N Nishimura, T Suyama, N Ohga Jul 2025

Aspects Of Indicator Plants As Criteria For Grassland Development In Wetland, N Nishimura, T Suyama, N Ohga

IGC Proceedings (1977-2023)

In order to decide the critical conditions for grassland development in wetland, we attempted to pick out indicator plants from grassland species. The five investigation sites used were prepared pastures containing moorland situated in the cool-temperate zone. As a result of 426 observations using one-square-meter quadrats, 316 species were confirmed. Using these findings the relationships between floristic composition and soil moisture conditions were analyzed by environmental gradient analysis. The following moisture gradient was observed in the order of species from mesophytic place to humid place; Paa pratensis - Dactylis glomerata - Trifolium repens - Juncus effusus - Scripus wichurae - …

Go to article

A Simulation Study On Effects Of Heifer Excreta On Herbage Yields And Potassium Uptake In Grazing Pasture, T Hakamata Jul 2025

A Simulation Study On Effects Of Heifer Excreta On Herbage Yields And Potassium Uptake In Grazing Pasture, T Hakamata

IGC Proceedings (1977-2023)

Two models (a potassium cycling model and an excreta! spatial dispersion model) were constructed to clarify how biased dispersion of potassium(K) and herbage yields occur in a pasture. 18 cases [ ( unexcreted + (urine, dung) x 4 excreted months) x (grass + legume)] were simulated by the K cycling model to obtain standing crops of K and herbage at the end of a growing season. The standing crops per 1 m2 were calculated on all the quadrats in the pasture by using the excreta! dispersion model. The standing crops in each of 18 cases were assumed to be normally …

Go to article

Seed, Seedling And Species Dynamics Of Grazed Annual Pastures In South Australia, E D. Carter, A Lake Jul 2025

Seed, Seedling And Species Dynamics Of Grazed Annual Pastures In South Australia, E D. Carter, A Lake

IGC Proceedings (1977-2023)

The self-regenerating annual legumes mainly the medics (Medicago spp.) and subterranean clover (Trifolium spp.) are vital for maintaining the nitrogen economy of some 40 million hectares of crop and pasture land in Australia. However, new pests and diseases and poor management practices have caused serious decline of these annual legumes in many districts. In recent years a research program to identify the main factors causing legume decline has been started at the Waite Agricultural Research Institute. This research involves (i) studies of seed-seedling dynamics of the annual species of medics in the cereal-livestock zone (350-500mm annual rainfall) where legumes· are …

Go to article

Population Regulations Of Rhode Grass (Chloris Gayana) Varieties In Sward Conditions, M Kataoka, K Ibaraki, H Tokunaga Jul 2025

Population Regulations Of Rhode Grass (Chloris Gayana) Varieties In Sward Conditions, M Kataoka, K Ibaraki, H Tokunaga

IGC Proceedings (1977-2023)

In order to appreciate how population regulation of grass varieties occur in sward conditions, seven varieties of Rhodes grass were sown at four densities and grown with four cuttings during the first year, and records were taken of the density of surviving genets, the density of tillers, the mean genet weight and the mean tiller weight. During the experiment the two density-dependent processes of population regulation were observed, viz, density­dependent mortality of genets and density-dependent tillering of surviving genets. As results of these processes, tiller density converged towards a value characteristic of the variety but nearly free from influence of …

Go to article

Biological Efficiency Of Alpine Kobresia Grassland And Its Improved Semi-Artificial And Artificial Grasslands, Hu Zizhi, Sun Jixiong, Zhang Zihe, Zhang Yinsheng, Xu Changlin Jul 2025

Biological Efficiency Of Alpine Kobresia Grassland And Its Improved Semi-Artificial And Artificial Grasslands, Hu Zizhi, Sun Jixiong, Zhang Zihe, Zhang Yinsheng, Xu Changlin

IGC Proceedings (1977-2023)

Studies of phytomass and solar energy conversion efficiency were made on native alpine Kobresia grassland and its improved semi-artificial and artificial grasslands during June 20 to November 20, 1981, at Tianzhu Alpine Grassland Experiment Station of Gansu Agricultural University, China. The results obtained were as follows. 1. Aboveground total phytomass (standing green + standing dead + litter) of Kobresia grassland was the smallest and artificial grassland largest. On the contrary, underground total phytomass (live roots+ dead roots) of Kobresia grassland was the largest and artificial grassland smallest. Aboveground and underground total phytomass of Kobresia grassland was the largest, semi-artificial grassland …

Go to article

Pasture Renovation: The Effect Of Cultivation On The Productivity And Nitrogen Cycling Of A Buffel Grass (Cenchrus Ciliaris) Pasture, T.W G. Graham, R.J K. Myers, J W. Doran, V R. Catchpoole, G B. Robbins Jul 2025

Pasture Renovation: The Effect Of Cultivation On The Productivity And Nitrogen Cycling Of A Buffel Grass (Cenchrus Ciliaris) Pasture, T.W G. Graham, R.J K. Myers, J W. Doran, V R. Catchpoole, G B. Robbins

IGC Proceedings (1977-2023)

Initially vigorous improved grass pastures sown without legume in cleared forest country decline in productivity within five years. Perennial grass pastures become nitrogen (N) deficient with time because N accumlates in less available forms of plant and microbial origin and because additional mineralization of humic N does not occur. Rundown pastures can be rejuvenated by applying N fertilizer but more economical renovation options are sought. Options evaluated in this experiment were-disc ploughing once, 3-month cultivated fallow and resow, discing and oversowing a legume, N fertilizer and spring burning. In old buffel grass ( Cenchrus ciliaris) pastures large reserves of …

Go to article

The Effect Of The Rate Of Precipitation And Heat On The Crop Of Grassland, I Vinczeffy Jul 2025

The Effect Of The Rate Of Precipitation And Heat On The Crop Of Grassland, I Vinczeffy

IGC Proceedings (1977-2023)

Our 3-6-year fertilizer experiments aiming at the foundation of a water saving grassland management technology showed various crops in different years. In order to find out the reasons, in 1973 an experiment of several years was started with the mixture of 6 grasses and 2 papilionaceae. The results of the years between 1974-1982 were classified. We established that among our conditions precipitation has a great influence on the seasonal and annual crop of grassland. From the point of view of precipitation, the word "year" is considered as a period between 16th October and 15th October. Temperature has an effect, too, …

Go to article

Some Trials To Establish A Mixture Of Tall Fescue And Bahiagrass In Warmer Region Of Kyushu, M Ueno, Y Sugimoto, M Hirata Jul 2025

Some Trials To Establish A Mixture Of Tall Fescue And Bahiagrass In Warmer Region Of Kyushu, M Ueno, Y Sugimoto, M Hirata

IGC Proceedings (1977-2023)

In order to extend growing season and to increase annual production of pastures in southern part of Kyushu where warm and humid summers alternate cold winters, authors attempted to seed a mixture of cool- and warm-season pasture species. Tall fescue (Festuca arundinacea) and bahiagrass (Paspalum notatum) were sown in spring and autumn to form monoculture and mixture swards. Tall fescue started growth earlier and produced maximum yield in spring, while bahiagrass yielded much during early summer to autumn. In the mixture, combined yield of two species was between two monocultures, but total annual yield was less …

Go to article

Pasture Improvement In Several South Pacific Islands, B Toutain Jul 2025

Pasture Improvement In Several South Pacific Islands, B Toutain

IGC Proceedings (1977-2023)

Summary of past and present studies by French organizations of agronomic research regarding the establishment and management of tropical pastures. A review of stages for pasture improvement on several islands in the South Pacific and suggested future management needs for various tropical pasture species. Final results would give producers in developing countries a choise of species with its associated management, depending on the amount of inputs contributed by the grower.

Go to article

Impact Matrix Analysis Method For Grassland Development- Development Of Grassland In The Snowy, Cold Region In Japan (6), S Idzumi, T Tsujii, Y Asahida Jul 2025

Impact Matrix Analysis Method For Grassland Development- Development Of Grassland In The Snowy, Cold Region In Japan (6), S Idzumi, T Tsujii, Y Asahida

IGC Proceedings (1977-2023)

A simple matrix analysis method for environmental impact assessment was proposed. Environmental changes might be closely linked with result from direct or indirect action of development. Twenty-four impact items and fourty-five influenced items were picked up and scored. Influence for each item was given by 3 classes score. Development of grassland, agricultural remodeling of the land, resulted in a reduction of natural community. Conservation of natural condition, including woods, peatland and river, effects finally state of the grassland. Early check on the grassland development is highly appreciated.

Go to article

Historical Aspect On Grassland Development In Hokkaido - Development Of Grassland In The Snowy, Cold Region In Japan (4), M Saito, Y Asahida Jul 2025

Historical Aspect On Grassland Development In Hokkaido - Development Of Grassland In The Snowy, Cold Region In Japan (4), M Saito, Y Asahida

IGC Proceedings (1977-2023)

Agricultural development in Hokkaido began in the late 1860s' and has been remarkably advancing under intensive official support. Most of the grassland development has taken place over the last two decades while upland and rice fields were primarily developed by World War II. Today, approximately a century later, grassland, the majority of which is distributed in the eastern and northern regions, makes up the largest area of farmland and comprises 79% of the national total. Grassland is primarily used for cattle production. The level of grassland-based farming has rapidly risen to that of the EC nations. Further development of the …

Go to article

Land Clearing For Grassland Establishment In Hokkaido - Development Of Grassland In The Snowy, Cold Region In Japan (3)-, T Akazawa, Y Asahida Jul 2025

Land Clearing For Grassland Establishment In Hokkaido - Development Of Grassland In The Snowy, Cold Region In Japan (3)-, T Akazawa, Y Asahida

IGC Proceedings (1977-2023)

Most of the cultivated grassland in Hokkaido has been developed by mechanized work. Land clearing is first conducted using the working method suitable to remove natural obstacles, and it even influences the types of grassland use as well as the succeeding works, because of the top soil disturbance and carriage or the improvement of original slope. In this paper, these essential points are discussed.

Go to article

Natural Grassland In Hokkaido - Development Of Grassland In The Snowy, Cold Region In Japan (2), T Tsujii, Y Asahida Jul 2025

Natural Grassland In Hokkaido - Development Of Grassland In The Snowy, Cold Region In Japan (2), T Tsujii, Y Asahida

IGC Proceedings (1977-2023)

Histoty, type and present condition of natural grassland in Hokkaido are described briefly. And some climatological and human impact problems are discussed. Sufficient rainfall, especially heavy snow supports the existence and development of many types of natural grassland community. Rapidly development of artificial grassland and reform of arableland sometimes caused big influence to natural grassland.

Go to article

Climate And Hydrology Related To Grassland In Hokkaido- Development Of Grassland In The Snowy, Cold Region In Japan (1), H Takahashi, Y Umeda, Y Asahida Jul 2025

Climate And Hydrology Related To Grassland In Hokkaido- Development Of Grassland In The Snowy, Cold Region In Japan (1), H Takahashi, Y Umeda, Y Asahida

IGC Proceedings (1977-2023)

Seasonal and regional aspects of climate and water balance in Hokkaido are described briefly. And some climatological and hydrological problems are discussed in relating to developments of grassland. Detail analysis of depth of snow cover and daily mean temperature indicated that the growing season of grass is restricted by these two climatological elements in Hokkaido. Seasonal change of water balance calculated from meteorological factors suggested that water supplied by precipitation overflows the grassland in late autumn and early spring. Especially, melted snow supplies a large quantity of water to the grassland in short time. These are considerable problems for the …

Go to article

The Results On Loosening Soil To Improve Fringed Sagebrush Grassland In Inner Mongolia, Ma Zhi Guang Jul 2025

The Results On Loosening Soil To Improve Fringed Sagebrush Grassland In Inner Mongolia, Ma Zhi Guang

IGC Proceedings (1977-2023)

The program of loosening soil to improve grassland has been extensively studied for six years in the semiarid part of central Mongolia, especially on fringed sagebrush (Artemisia frigida Willd.) grassland which had already been deteriorated by beef cattle grazing. A detailed program was carried out from 1978 to 1984 involving the measurement of soil volume weight, soil water content, vegetative succession as well as forage production after soil loosened. It was shown that after six years study, the vegetation had changed from fringed sagebrush grassland to steppe grassland dominated by Stipa spp., and Agropyron cristatum. Forage yield increased by …

Go to article

An Information Of The Improvement Of The Sandy Pastures In Nei Monggol (Inner Mongolia) Autonomous Region Through Aerial Seeding, You Ke-Ming, Hou Yong-Zhang Jul 2025

An Information Of The Improvement Of The Sandy Pastures In Nei Monggol (Inner Mongolia) Autonomous Region Through Aerial Seeding, You Ke-Ming, Hou Yong-Zhang

IGC Proceedings (1977-2023)

In Nei Monggol Autonomous Region, there are lots of sandy lands where the population rate is rather low. The renovation of these sandy lands through aerial seeding into better pastures is an important task of the local economical construction and state land repairing. In recent years, we carried out the aerial seeding in the different types of sandy lands in Nei Monggol Autonomous Region. The total acreage seeded accounts to 0.2 million ha. Generally, three years after an aerial seeding, almost 30-50% of mobile sand dunes and semi-fixed dunes in all seeded districts have been fixed. The coverage of the …

Go to article

First Prev Next Last