scholarly journals Diversitas Tumbuhan Liar Pada Lahan Jagung (Zea mays L.) di Desa Bungbungan Kecamatan Bluto Kabupaten Sumenep

2020 ◽  
Vol 6 (1) ◽  
pp. 54-60
Author(s):  
Khoiratul Hasanah ◽  
Ari Hayati ◽  
Hasan Zayadi

Wild plants are plants whose presence on agricultural land can reduce crop yields. Losses due to wild plants to cultivated plants vary depending on the type of plant cultivated, climate, species of wild plants and technical cultivation applied. This study aims to determine the diversity of wild plants in the land of maize (Zea mays L.) in Bung-bungan Village Bluto District Sumenep Regency. This method uses a descriptive exploratory method, for each wild plant found in ± 3600 m2 of corn land. Sampling of wild plants using a 4x4 m plot method. The measured data includes the number of species and the number of individuals calculating important values ​​and diversity indices. The results of the study showed that the Shannon-Wienner Diversity Index analysis of the highest value in maize plants in plantations was found in land II, which was 2.678 indicating moderate diversity, categorized as moderate because there were not too many wild plants on maize.  Keywords: Corn, diversity, wild plants,  ABSTRAK Tumbuhan liar merupakan tumbuhan yang kehadirannya pada lahan pertanian dapat menurunkan hasil tanaman. Kerugian akibat tumbuhan  liar terhadap tanaman budidaya beragam bergantung dari jenis tanaman yang diusahakan, iklim, jenis tumbuhan  liar dan teknis budidaya yang diterapkan. Penelitian ini bertujuan untuk mengetahui diversitas tumbuhan liar di lahan jagung (Zea mays L.) di Desa Bung-bungan Kecamatan Bluto Kabupaten Sumenep. Metode ini menggunakan metode deskriptif eksploratif, terhadap setiap tumbuhan liar yang ditemukan pada lahan jagung seluas ±3600 m2. Pengambilan sampel tumbuhan liar menggunakan metode plot berukuran 4x4 m. Data yang diukur meliputi jumlah spesies dan jumlah individu menghitung nilai penting dan indeks diversitas. Hasil penelitian menunjukkan analisis Indeks Keanekaragaman Shannon-Wienner tumbuhan liar nilai tertinggi pada tanaman jagung di lkebun terdapat pada lahan II yaitu 2,678 menunjukkan keanekaragaman sedang, di kategorikan sedang karena jenis tanaman liar yang ada pada lahan jagung tidak terlalu banyak. Kata kunci: Jagung, Diversitas, Tanaman liar

2019 ◽  
Vol 5 (1) ◽  
pp. 18-24
Author(s):  
Ifadotul Lailatussholiha ◽  
Ari Hayati ◽  
Hasan Zayadi

The research aims to find out the diversity and association between wild plant species on rice fields (Oryza sativa) and corn (Zea mays) at technical unit of Singosari Seed Crop Development, Malang Regency. In this study using the survey method, by observing directly any wild plants found in the fields of rice and corn. The exploration of wild plants was carried out by exploratory methods, namely observing wild plants found around rice and maize plantations in predetermined plots. Analysis of the data used is the Shannon-Wienner Diversity Index and Pielou Evenness Index. Whereas to find out the association between wild plant species that is by calculating the Chi-square test based on the results of the 2x2 contingency table whose value is obtained from the presence or absence of speces in a plot. Furthermore, to find out the positive or negative interactions that occur, the correlation coefficient calculation is also based on the 2x2 contingency table. The results obtained for the highest Diversity Index value of 2.729 was on land II from the corn field. Whereas the high palin value of Pielou's Tightness Index of 0.371 is on land II from the corn field. Keywords: Diversity, association, wild plants ABSTRAK Penelitian bertujuan untuk mengetahui diversitas dan asosiasi antar spesies tumbuhan liar pada lahan tanaman padi (Oryza sativa) dan jagung (Zea mays) di UPT Pengembangan Benih Palawija Singosari Kabupaten Malang. Penelitian ini mengunakan metode Eksploratif, dengan mengamati langsung setiap tumbuhan liar yang terdapat pada lahan tanaman padi dan jagung. Pengambilan sampel tumbuhan liar dilakukan cara purposive sampling yaitu mengamati tumbuhan liar yang terdapat di sekitar pertanaman padi dan jagung pada plot-plot yang sudah ditentukan. Analisis data yang digunakan yaitu Indeks Keanekaragaman shannon-Wienner dan Indeks Kemerataan Pielou. Sedangkan untuk mengetahui asosiasi antar spesies tumbuhan liar yaitu dengan menghitung uji Chi-square berdasarkan hasil tabel kontingensi 2x2 yang nilainya didapatkan dari ada atau tidak adanya spesies dalam suatu plot. Selanjutnya untuk mengetahui positif atau negatifnya interaksi yang terjadi dilakukan perhitungan koifisien korelasi yang juga didasarkan pada tabek kontingensi 2x2. Hasil yang didapatkan untuk Indeks Keanekaragaman yaitu nilai paling tinggi berada pada lahan II dari lahan tanaman jagung yaitu  2,729. Sedangkan nilai paling tinggi dari Indeks Kemeratan Pielou berada pada lahan II dari lahan tanaman jagung yaitu 0,371. Kata kunci: Diveritas, asosiasi, tumbuhan liar.


2020 ◽  
pp. 67-79
Author(s):  
Yu. Kravchenko

In Ukraine 57.5 % of agricultural land is subjected to erosion with 10–24 million tons of humus, 0.3–0.96 million tons of nitrogen, 0.7–0.9 million tons of phosphorus and 6–12 million tons of potassium lost annually. Degradation processes are also common on chernozems, which cover about 60 % of the Ukrainian territory. The aim of the research is to defi ne the most eff ective soil conservation practices and legislative decisions aimed to conservation/recovering the Ukrainian chernozem fertility. The experimental data of the agrochemical certifi cation of Ukrainian lands, data from scientifi c papers, stock and instructional materials as well as our own fi eld and laboratory studies were used. It has been established that the long-term use of deep subsurface tillage on typical chernozem increases, compared with plowing, the content of 10–0.25 mm of air-dry and water-resistant aggregates, the bulk density, soil water storages, water infi ltration rates, the content of mobile phosphorus and exchangeable potassium, pHH2O, CaCO3 stocks, the contents of humic and fulvic acids, molecular weights of humic acids – by 5.5 and 3.06 %; 0.05 g/cm3; 25.5 mm; 22.6 mm/h; 0.1 and 3 mg/100 g of soil; 0.03 pHH2O; 18 t/ha, 0.02 and 0.04 %, 91195 kDa, respectively. Fertilizers may contribute to the crop yields increase from by 60% in the Polissya, by 40 % – in the Forest Steppe, by 15 % – in the Wet Steppe, by 10 % – in the Dry Steppe and by 40 % – in the Irrigated Steppe areas. In soil-conservation rotations, the crop placement and alternation are advisable to combine with strips or hills sowing, taking into account the local relief features; soil alkalinization, applying anti-erosion structures. Ukrainian agriculture will receive additional 10–12 million tons of forage units or 20–22 % from all fodder in a fi eld agriculture under increasing 8–10 % of arable lands for intercrops. It is advisable to mulch the eroded chernozems of Ukraine depending on their texture composition: 1.3 t/ha of mulch for sandy and loamy soils, 1.9 t/ha – for sandy and 1.1 t/ha – for loamy soils. The implementation of soil conservation agriculture can minimize some soil degradation processes and improve eff ective soil properties required to realize the biological potential of cultivated plants. Key words: chernozem, degradation, fertility, soil conservation technologies, agriculture policy.


1983 ◽  
Vol 63 (1) ◽  
pp. 235-241 ◽  
Author(s):  
J. A. IVANY ◽  
J. R. ENMAN

Forage corn (Zea mays L.) was grown successfully in Prince Edward Island by no-till planting the corn into standing cereal stubble 15–20 cm tall using a Buffalo no-till seeder. Planting with the slot-type shoe in a preliminary experiment in 1978 gave better forage yields than planting with a slice-type shoe mainly because of better plant population achieved. Subsequent experiments in 1979–1981 using the slot-type shoe to no-till plant corn in cereal stubble gave good forage yields when adequate weed control was provided with herbicide treatment. Best control of quackgrass (Agropyron repens L. Beauv.) and dandelion (Taraxacum officinale Weber) and crop yields was achieved with glyphosate + atrazine (1.5 + 2.5 kg a.i./ha) or amitrole + atrazine (3.4 + 2.5 kg a.i./ha) applied preemergence after seeding corn and before corn emergence. Control of quack grass and dandelion with glyphosate or amitrole used alone ranged from 71–80%, but paraquat alone did not provide any weed control. Addition of atrazine to paraquat, glyphosate, or amitrole gave improved control of quackgrass and dandelion and higher forage corn yields. Addition of 2.5 kg a.i./ha atrazine gave better results than use of 1.0 kg a.i./ha of atrazine.Key words: Forage corn, no-till seeding, glyphosate, atrazine, aminotriazole, paraquat


2020 ◽  
Vol 5 (2) ◽  
pp. 115-126 ◽  
Author(s):  
M Jannat ◽  
M Kamruzzaman ◽  
MA Hossain ◽  
MK Hossain

The study was conducted to explore tree species diversity of Renikhayong para Village Common Forest (VCF) of Bandarban hill district. Stratified random sampling was carried out to assess the tree species diversity of the VCF. Renikhayong Para VCF with an area of 40 acres of land has more than 85 tree species belonging to 31 families, where Euphorbiaceae family was dominant containing 11 species followed by Rubiaceae (7 species), Moraceae (7 species), Meliaceae (5 species), Mimosaceae (5 species), Combretaceae (4 species), Lauraceae (4 species) and Anacardiaceae (3 species). Dominant tree species was Grewia nervosa. Renikhayong para VCF has diverse floristic resources that are known from the Shannon-Wiener’s diversity index (4.007), Simpson’s diversity index (0.028), Margalef’s richness index (13.21) and Species evenness index (0.90). However, number of species and number of individuals both were highest in the height range of 5 - <10 m. Similar trend was observed in dbh classes. Number of individuals were highest in dbh range of 5 - <15 cm and the lowest in ≥ 55 cm. The results depict the presence of maximum small trees in the VCF and decreasing the number of trees with the increase of tree height (m) and dbh (cm). Presence of diverse tree species and diversity indices indicate the importance and potential of the VCF for conservation and sustainable use. J. Biodivers. Conserv. Bioresour. Manag. 2019, 5(2): 115-126


2006 ◽  
Vol 87 (1) ◽  
pp. 101-111 ◽  
Author(s):  
Warren D. Devine ◽  
Donald D. Tyler ◽  
Michael D. Mullen ◽  
Allan E. Houston ◽  
John D. Joslin ◽  
...  

2019 ◽  
Vol 6 (1) ◽  
pp. 411-433 ◽  
Author(s):  
Fernando García-Arenal ◽  
Francisco Murilo Zerbini

Viruses constitute the largest group of emerging pathogens, and geminiviruses (plant viruses with circular, single-stranded DNA genomes) are the major group of emerging plant viruses. With their high potential for genetic variation due to mutation and recombination, their efficient spread by vectors, and their wide host range as a group, including both wild and cultivated hosts, geminiviruses are attractive models for the study of the evolutionary and ecological factors driving virus emergence. Studies on the epidemiological features of geminivirus diseases have traditionally focused primarily on crop plants. Nevertheless, knowledge of geminivirus infection in wild plants, and especially at the interface between wild and cultivated plants, is necessary to provide a complete view of their ecology, evolution, and emergence. In this review, we address the most relevant aspects of geminivirus variability and evolution in wild and crop plants and geminiviruses’ potential to emerge in crops.


GCB Bioenergy ◽  
2019 ◽  
Vol 11 (11) ◽  
pp. 1376-1391 ◽  
Author(s):  
Moritz Cossel ◽  
Kathrin Steberl ◽  
Jens Hartung ◽  
Lorena A. Pereira ◽  
Andreas Kiesel ◽  
...  

2011 ◽  
Vol 278 (1723) ◽  
pp. 3444-3451 ◽  
Author(s):  
Andrea Holzschuh ◽  
Carsten F. Dormann ◽  
Teja Tscharntke ◽  
Ingolf Steffan-Dewenter

Agricultural land use results in direct biodiversity decline through loss of natural habitat, but may also cause indirect cross-habitat effects on conservation areas. We conducted three landscape-scale field studies on 67 sites to test the hypothesis that mass flowering of oilseed rape ( Brassica napus ) results in a transient dilution of bees in crop fields, and in increased competition between crop plants and grassland plants for pollinators. Abundances of bumble-bees, which are the main pollinators of the grassland plant Primula veris , but also pollinate oilseed rape (OSR), decreased with increasing amount of OSR. This landscape-scale dilution affected bumble-bee abundances strongly in OSR fields and marginally in grasslands, where bumble-bee abundances were generally low at the time of Primula flowering. Seed set of Primula veris , which flowers during OSR bloom, was reduced by 20 per cent when the amount of OSR within 1 km radius increased from 0 to 15 per cent. Hence, the current expansion of bee-attractive biofuel crops results in transient dilution of crop pollinators, which means an increased competition for pollinators between crops and wild plants. In conclusion, mass-flowering crops potentially threaten fitness of concurrently flowering wild plants in conservation areas, despite the fact that, in the long run, mass-flowering crops can enhance abundances of generalist pollinators and their pollination service.


2021 ◽  
Vol 43 (3) ◽  
Author(s):  
Yanying Zhang ◽  
Wurhan ◽  
Sachula ◽  
Yongmei ◽  
Khasbagan

AbstractMongolian traditional botanical knowledge has been rarely researched concerning the ethnobotany theory and methodology in the last six decades (Pei in Acta Botanica Yunnanica 135–144, 1988, as reported (Martin in Ethnobotany: A methods manual, Chapman and Hall, 1995)). However, most of the known literature of indigenous knowledge and information regarding the use of local wild plants among Mongolian herders was first documented by several botanical research of Russian researchers in Mongolia through the 1940s and 1950s. One of the most comprehensive works was completed by A. A. Yunatov (1909–1967), which is known as “Fodder Plants of Pastures and Hayfields of the People’s Republic of Mongolia” (FPM). Yunatov’s research sampled forage plants in Mongolia from 1940 to 1951 and subsequently published a study in 1954. The original transcript of FPM was later translated into Chinese and Mongolian (Cyrillic alphabet) during 1958 and 1968. In addition to morphological characteristics, distribution, habitat, phenology, palatability, and nutrition of forage plants, Yunatov`s record collected local names, the folk understanding and evaluation of the forage, as well as other relevant cultural meanings and the use of local wild plants (collected from the wild as opposed to cultivated plants) in FPM through interviews. The book contains the most precious records created in the 1940s and 1950s on folk knowledge of the Mongolians' wild plants in Mongolia. It was composed of 8 chapters and 351 pages in total. The fifth chapter of FPM, entitled “The systematic overview of forage plants,” making up 272 pages (77.49% of the total page counts). The order and content of the book-oriented along with profiles of specific plants. Yunatov collected detailed information on plants, such as the local name, morphology, distribution, habitats, ecological characteristics, and phenology. He also discussed the palatability of livestock, particular forage use, other usages, and chemical composition. Through careful reading and understanding of all three versions of the book (in Russian, Chinese, and Mongolian (Cyrillic alphabet)), the FPM-listed information of edible plants was categorized using ethnobotanical dependent analysis. The list of edible plants was ranked based on purposes and ethnobotanical inventories as per methodology and analysis used in the ethnobotany research. FPM listed 35 species are part of 15 families and 25 genera of wild edible plants. Most species belong to Liliaceae and Allium. Naturally grown grain and some food substitutes (plants that could be used as substitutions for typical food) come from the starchy organs, such as seeds, bulbs, roots, and rhizomes of 12, accounting for 34.28% of all species. Wild vegetables come from the parts of a young plant, tender leaves, young fruits, lower leg of stems, and bulbs of 9 species, accounting for 25.71% of all species. There are only three species of wild fruits, accounting for 8.57% of all edible plant species. Tea substitutes consist of leaves, roots, follicle, and aboveground parts of 8 wild plant species, accounting for 22.85% of all species. Seasonings from the wild were made of the elements such as seeds, rhizomes, tender leaves of 7 species, accounting for 20.00% of all species (Fig,8). Similarities and differences are noticeable in utilizing wild edible plants among Mongolian populations living in Mongolia and Inner Mongolia. Six species of wild edible plants listed in FPM have been proven to be collected and consumed by Mongolians from the Genghis Khan era in the twelfth century to the present day. This proved that the Mongolians have a tradition of recognizing and utilizing wild plants, demonstrating historical and theoretical value. Seven species of plants mentioned in this book were closely correlated to the locals' processing of traditional dairy products, meat, and milk food. Yunatov was not an ethnobotanist, but his accurate documentation of interviews and surveys with Mongolians represents valuable information about the collection and consumption of local wild plants during 1940–1951 in Mongolia. His research mission meant to focus on forage grass, the feed plant that sustained livestock, while he also recorded plants consumed by humans. His records on the edible parts and intake methods of some plants are incomplete. Still, it provided ethnobotanical materials of a remarkable scientific value and a living history of ethnobotany in Mongolian regions. Even by today`s standards, it will be challenging to obtain first-hand information of the richness and to the extent of Yunatov’s research.


2015 ◽  
Vol 66 (7) ◽  
pp. 706 ◽  
Author(s):  
Xiaojing Wang ◽  
Xinxin Wang ◽  
Gu Feng

The integrated soil–crop system management (ISSM) approach can potentially mitigate the loss of biodiversity in agricultural landscapes, ensuring crop yield with lower nitrogen (N) fertiliser input and minimised environmental pollution. The aim of this study was to test the hypotheses that overuse of N fertiliser could reduce the biodiversity of arbuscular mycorrhizal fungi (AMF) and that ISSM could help to maintain higher AMF biodiversity than the conventionally managed system in maize (Zea mays L.). The AMF community composition under three different treatments (conventionally managed, N-optimised and non-N-fertilised fields) was assessed by using both spore-based morphological taxonomy and DNA-based T-RFLP fingerprinting approaches. Maize roots in intensively managed fields formed functioning mycorrhizal symbioses even when a high rate of N fertiliser was applied. AMF diversity was higher under optimised N input, whereas AMF richness decreased when more N fertiliser was used. The N-optimised farms had AMF communities similar to those in the conventionally managed fields. The ISSM approach is recommended for sustaining crop yields without incurring continuing environmental costs and for maintaining AMF communities in intensively managed agro-ecosystems, especially in rapidly developing countries.


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