Journal of Applied and Natural Science最新文献

Comparative study of Macrocybe gigantea (Massee) Pegler & Lodge cultivation in two different seasons of Jammu region, India Macrocybe gigantea (Massee) Pegler &amp；印度查谟地区两个不同季节的小屋栽培

Journal of Applied and Natural Science Pub Date : 2025-12-20 DOI: 10.31018/jans.v17i4.7029

Sapna Devi, Geeta Sumbali

{"title":"Comparative study of Macrocybe gigantea (Massee) Pegler &amp; Lodge cultivation in two different seasons of Jammu region, India","authors":"Sapna Devi, Geeta Sumbali","doi":"10.31018/jans.v17i4.7029","DOIUrl":"https://doi.org/10.31018/jans.v17i4.7029","url":null,"abstract":"Mushrooms are large fungi characterized by their visible basidiocarps. Macrocybe gigantea, commonly known as “Boro dhoodh chattu” for its odour of dehydrated milk. It is a tropical species capable of growing on diverse untreated plant wastes, making it a highly economical crop. However, a very few research has been conducted on its cultivation and nutritional value. In view of the favourable environmental conditions and the availability of agricultural waste in Jammu division, cultivation of Macrocybe gigantea was undertaken. Studies on the cultivation of M. gigantea were conducted from 2019 to 2021. Experiments growing this fungus were carried out in summer (April-June) and monsoon (July-September) using two different agrowastes (wheat and paddy straw) and testing the impacts of farmyard manure, vermicompost and a mixture of the two as casing material. It was observed that the July to September cropping period demonstrated superior performance, yielded maximum output and biological efficiency. Notably, the cropping cycle was shorter during July to September than that recorded during April to June. These findings imply that specific environmental conditions during July to September are conducive to achieving maximum yield of M. gigantea.","PeriodicalId":14996,"journal":{"name":"Journal of Applied and Natural Science","volume":"17 4","pages":"1937-1943"},"PeriodicalIF":0.0,"publicationDate":"2025-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://journals.ansfoundation.org/index.php/jans/article/download/7029/3085","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147907844","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Macro-ecology and biogeography of soil nematodes in Pir Panjal range of Jammu and Kashmir Himalaya, India 印度查谟和克什米尔喜马拉雅地区Pir Panjal地区土壤线虫的宏观生态学和生物地理学

Journal of Applied and Natural Science Pub Date : 2025-12-20 DOI: 10.31018/jans.v17i4.6787

Shahnaz Anjam, Nazia Kouser, Ali Asghar Shah

{"title":"Macro-ecology and biogeography of soil nematodes in Pir Panjal range of Jammu and Kashmir Himalaya, India","authors":"Shahnaz Anjam, Nazia Kouser, Ali Asghar Shah","doi":"10.31018/jans.v17i4.6787","DOIUrl":"https://doi.org/10.31018/jans.v17i4.6787","url":null,"abstract":"The Himalayan region holds significant ecological importance and plays a crucial role in biomonitoring ecosystems. The present study to investigate the Effects of various factors, including latitude, climate, and vegetation, on the diversity and geographic distribution patterns of soil-inhabiting nematodes in the Pir Panjal range of the Jammu and Kashmir Himalayas, India. Soil Samples were collected from forests, agricultural fields, and grasslands in temperate and subtropical regions, along an altitude gradient (1000 to 2300m) and a latitudinal gradient (33º 32 'N to 33º 48' N). A Significant variation among different vegetation types and number of genera and abundance of nematodes was determined by Regression Analysis and A one-way ANOVA followed by T test. A Correlation Coefficient Analysis between various ecological indices like Maturity Index (MI), Diversity Indices (Shannon-Weaver, Simpson, Hills N1 and N2), Trophic structure Indices (Enrichment Index, Structure Index) and latitude were performed. The Maturity Index decreased (r= -0.645) in higher latitudes, accompanied by an increase in microbial activity, indicating a less disturbed environment. The higher values of the Enrichment Index (EI) and Structure Index (SI) at lower latitudes indicated higher opportunists and an indicator of food web state, respectively. The Linear regression model showed a significant relationship between soil nematode trophic guilds and latitude and precipitation. It reflects higher nutrient mineralization and productivity in areas with higher precipitation. The highest mean value of nematode abundance in temperate region and genera in subtropical areas explains the trophic guild status.","PeriodicalId":14996,"journal":{"name":"Journal of Applied and Natural Science","volume":"17 4","pages":"1509-1519"},"PeriodicalIF":0.0,"publicationDate":"2025-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://journals.ansfoundation.org/index.php/jans/article/download/6787/3042","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147881371","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Sustainable approach to optimize flowering and yield in acid lime (Citrus aurantiifolia Cv. Balaji) using pre-harvest elicitors 酸石灰（Citrus aurantiifolia Cv.）的开花和产量优化可持续方法。巴拉吉)使用收获前的激发剂

Journal of Applied and Natural Science Pub Date : 2025-12-20 DOI: 10.31018/jans.v17i4.6909

Sathiyanarayanan Venkatachalam, Prakash Kasilingam, Gopu Balraj, Chandrasekaran Perumal

{"title":"Sustainable approach to optimize flowering and yield in acid lime (Citrus aurantiifolia Cv. Balaji) using pre-harvest elicitors","authors":"Sathiyanarayanan Venkatachalam, Prakash Kasilingam, Gopu Balraj, Chandrasekaran Perumal","doi":"10.31018/jans.v17i4.6909","DOIUrl":"https://doi.org/10.31018/jans.v17i4.6909","url":null,"abstract":"Acid lime cultivation faces seasonal yield fluctuations with alternating peak and lean periods. Growth regulators enhance fruit set by promoting ovary growth and reducing abscission. Their application during full bloom improves fruit set and overall productivity. The present investigation was carried out to evaluate the role of pre-harvest elicitors in enhancing the flowering and yield of Acid Lime (Citrus aurantiifolia) Cv. Balaji. The experiment was laid out in Randomized Block Design (RBD) with eleven treatments and three replications viz., T1 - 25mM of Glycine betaine, T2 - 50mM of Glycine betaine, T3 - 75mM of Glycine betaine, T4–0.2 per cent of Potassium silicate, T5 - 0.4 per cent of Potassium silicate, T6 - 0.6 per cent of Potassium silicate, T7 - 50 ppm of Salicylic acid, T8 - 100 ppm of Salicylic acid, T9 - 150 ppm of Salicylic acid, T10 - Water, T11 – Control (No Spray). Trees treated with 0.4% potassium silicate showed the lowest number of days to first bud emergence (26.56) and 50% flowering (36.82), total flowers per shoot (22.69), staminate flowers per shoot (6.95), and hermaphrodite flowers per shoot (16.05). This treatment also resulted in the best yield-related traits, recording the highest fruit set percentage (55.62), the minimum days from flowering to harvest (140), the greatest number of fruits per tree (125.44), fruit weight (82.35g), and yield per tree (10.33 kg). Therefore, application of 0.4% potassium silicate is recommended to induce greater flowering and achieve higher yield during the lean season.","PeriodicalId":14996,"journal":{"name":"Journal of Applied and Natural Science","volume":"17 4","pages":"1825-1829"},"PeriodicalIF":0.0,"publicationDate":"2025-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147879580","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Soil nematode communities as indicators of forest ecosystem health: A study in Patnitop region of District Udhampur, UT, J&K, India 土壤线虫群落作为森林生态系统健康指标的研究——以犹他州Udhampur区Patnitop地区为例K,印度

Journal of Applied and Natural Science Pub Date : 2025-09-20 DOI: 10.31018/jans.v17i3.6732

Anil Bhardwaj, Fozia Choudhary, Iqra Sayeed, Yasmeen Kouser, Nazia Kouser, Ali Asghar Shah

{"title":"Soil nematode communities as indicators of forest ecosystem health: A study in Patnitop region of District Udhampur, UT, J&amp;K, India","authors":"Anil Bhardwaj, Fozia Choudhary, Iqra Sayeed, Yasmeen Kouser, Nazia Kouser, Ali Asghar Shah","doi":"10.31018/jans.v17i3.6732","DOIUrl":"https://doi.org/10.31018/jans.v17i3.6732","url":null,"abstract":"Nematodes are vital bioindicators of soil health, reflecting ecological conditions and anthropogenic disturbances, such as tourism. This study provides the first comprehensive assessment of nematode diversity in the Patnitop forest (Jammu & Kashmir, India), evaluating their community structure and ecological significance. Soil samples were collected from multiple forest sites, with nematodes identified to genus level and classified by trophic groups and colonizer-persister (c-p) classes. Diversity indices (Shannon Index, Species Evenness, Maturity Index, Plant Parasitic Index) and ecological indices (Enrichment, Structure, Basal) were computed to assess soil food web conditions. Statistical analysis employed the Kruskal-Wallis test. We identified 37 nematode genera, with bacterivores dominating (58.7%), followed by omnivores (20.58%), herbivores (11%), predators (8.9%), and fungivores (2.7%). The c-p classification showed high proportions of opportunistic c-p 1 nematodes (39.0–48.1%) and stable c-p 4 (19.3–27.6%) and c-p 5 (5.8–15.3%) groups. Moderate diversity (Shannon Index: 1.93; Evenness: 0.73) and nutrient-rich conditions (Maturity Index: 2.50; Plant Parasitic Index: 3.20) were observed. High Enrichment (82.59) and Structure (92.48) indices, combined with a low Basal Index (4.17), indicated a stable food web under minimal stress. Trophic group differences were statistically significant (p = 0.00129). The predominance of bacterivores highlights bacterial-mediated decomposition, while nematode metrics demonstrated sensitivity to ecological gradients, underscoring their utility as bioindicators for tourism-linked disturbances. These findings advocate integrating nematode monitoring into forest management frameworks to guide soil conservation in this fragile ecosystem.","PeriodicalId":14996,"journal":{"name":"Journal of Applied and Natural Science","volume":"17 3","pages":"1290-1298"},"PeriodicalIF":0.0,"publicationDate":"2025-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://journals.ansfoundation.org/index.php/jans/article/download/6732/3013","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147906512","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effect of pollination on fruit set and quality of sweet cherry (Prunus avium L.) in Kashmir Valley, India 印度克什米尔谷地甜樱桃（Prunus avium </i&gt；L.）授粉对坐果和品质的影响

Journal of Applied and Natural Science Pub Date : 2025-09-20 DOI: 10.31018/jans.v17i3.6628

Arjumand John, Sajad A. Ganie, Kaisar Ahmad Bhat, Amaninder Kaur

{"title":"Effect of pollination on fruit set and quality of sweet cherry (Prunus avium L.) in Kashmir Valley, India","authors":"Arjumand John, Sajad A. Ganie, Kaisar Ahmad Bhat, Amaninder Kaur","doi":"10.31018/jans.v17i3.6628","DOIUrl":"https://doi.org/10.31018/jans.v17i3.6628","url":null,"abstract":"Pollinators play a crucial role in the reproduction of cherries, ensuring successful fruit set and enhancing the quality and yield of cherries. The study aimed to highlight the crucial role of insect pollinators in enhancing the fruit set and quality of sweet cherries (Prunus avium L.) in orchards of the Kashmir Valley, with significant implications for sustainable horticultural practices. Utilizing a Randomized Block Design (RBD) with six treatments and three replications, the contributions of three key pollinators Apis mellifera, Apis cerana, and Eristalis tenax were systematically evaluated. While all pollination treatments resulted in 100% fruit set, notable differences in fruit quality were observed based on pollinator species and visit frequency. A. mellifera emerged as the most effective pollinator, attributed to its high foraging rate (1.65 flowers per second) and strong fidelity. It produced the largest fruits (18.00 mm), highest fruit weight (8.82 g), lowest acidity (1.12% citric acid), and highest TSS (17.90°Brix). A. cerana also contributed significantly, particularly under multiple visit scenarios, yielding fruit size of 17.10 mm, weight of 7.22 g, acidity of 1.44%, and total soluble solids (TSS) of 16.57°Brix. Though E. tenax exhibited lower efficiency, it still played a supplemental role, improving fruit characteristics moderately with repeated visits. Foraging efficiency, measured as time spent per flower, further reinforced the dominance of A. mellifera (8.34 seconds/minute/flower) over A. cerana (9.38 seconds/minute/flower) and E. tenax (11.34 seconds/flower).","PeriodicalId":14996,"journal":{"name":"Journal of Applied and Natural Science","volume":"17 3","pages":"1137-1145"},"PeriodicalIF":0.0,"publicationDate":"2025-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://journals.ansfoundation.org/index.php/jans/article/download/6628/2995","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147912285","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Antibiotic resistance profile of Escherichia coli from Marikina River in the Philippines: Environmental and public health implications 来自菲律宾马里基纳河的大肠杆菌的抗生素耐药性分析：对环境和公共卫生的影响

Journal of Applied and Natural Science Pub Date : 2025-06-20 DOI: 10.31018/jans.v17i2.6552

Aaron Jan Palmares, Kim Joshua Tacsagon, Francesca Clare Taopo, Xhaira Taroma, S.F. Toledo, Ivy Sophia Torres, Jamaica Red Ventura, Angela Marie Villanueva, Leslie Gayle Yamat, Francisco Gellecanao

{"title":"Antibiotic resistance profile of Escherichia coli from Marikina River in the Philippines: Environmental and public health implications","authors":"Aaron Jan Palmares, Kim Joshua Tacsagon, Francesca Clare Taopo, Xhaira Taroma, S.F. Toledo, Ivy Sophia Torres, Jamaica Red Ventura, Angela Marie Villanueva, Leslie Gayle Yamat, Francisco Gellecanao","doi":"10.31018/jans.v17i2.6552","DOIUrl":"https://doi.org/10.31018/jans.v17i2.6552","url":null,"abstract":"The Marikina River in the Philippines is faced with problems caused by urbanization through the indiscriminate discharge of agricultural and municipal effluents, thus making the river potentially take part in the transmission of antimicrobial resistance (AR). This study, therefore, focused on determining the concentration and AR profile of Escherichia coli isolated from surface waters across various river sites. The results showed that the concentration of E. coli from all six sampling sites, including one within a Philippine-protected landscape, has far exceeded the upper microbial limit for all water body classifications designated for beneficial use, including Class D water (400 CFU/100 mL). The estimated average E. coli and coliform concentrations from all sampling sites were 1.9 x 105 CFU/100 mL and 12.0 x 105 CFU/100 mL. Even in a protected area, average concentrations of E. coli (1.5 x 103 CFU/100 mL) and coliforms (5.6 x 103 CFU/100 mL) were far above the Class A water limit of 100 CFU/100 mL. Moreover, 18.8% and 22.9% of the isolates were classified as multidrug-resistant (MDR) and extended-spectrum beta-lactamase (ESBL) producers. Some isolates from the most upstream sites exhibited resistance to third-generation cephalosporins. These findings underscore the need for further surveillance, particularly in upstream areas, to better understand how human activities are contributing to the progression of AR in the river. Such studies are essential to keep authorities and policymakers informed and to guide more effective management and remediation efforts.","PeriodicalId":14996,"journal":{"name":"Journal of Applied and Natural Science","volume":"17 2","pages":"614-621"},"PeriodicalIF":0.0,"publicationDate":"2025-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147887576","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Stock assessment of Schizothorax richardsonii (Gray, 1832) using geometric morphometrics and mitochondrial marker COX1 from tributaries of the Chenab River, India （Gray, 1832）利用几何形态计量学和线粒体标记COX1对印度切纳布河支流的Schizothorax richardsoni &lt；/i&gt；种群进行评估

Journal of Applied and Natural Science Pub Date : 2025-06-20 DOI: 10.31018/jans.v17i2.6535

Kousar Yasmeen, Mahender Singh, Deepak Singh

{"title":"Stock assessment of Schizothorax richardsonii (Gray, 1832) using geometric morphometrics and mitochondrial marker COX1 from tributaries of the Chenab River, India","authors":"Kousar Yasmeen, Mahender Singh, Deepak Singh","doi":"10.31018/jans.v17i2.6535","DOIUrl":"https://doi.org/10.31018/jans.v17i2.6535","url":null,"abstract":"Schizothorax richardsonii (Gray, 1832) is extensively dispersed in the Indian Himalayan region and is recognized as an important source of animal protein. Geographical isolation between river ecosystems is believed to promote phenotypic and genotypic variation, ultimately leading to changes in the stock structure of aquatic species. With this aim of the study, 190 specimens of S. richardsonii were collected from four different tributaries, Rajouri Tawi, Chingus Tawi, Nowshera Tawi, and Ans River, of the Chenab River, to assess the intraspecific phenotypic and genotypic variations among stocks through landmark-based geometric morphometrics and mitochondrial marker COX1 gene. Three stocks were identified from four different tributaries of the Indus River basin. Principal Component Analysis (PCA) revealed that the first two principal components explained 76.89% of the total variance (PC1 = 67.67% and PC2 = 9.22%). The PC1-based shape wireframe showed that landmarks 5, 7, and 8 were crucial in distinguishing different morphotypes. The Canonical Variates Analysis (CVA) confirmed the existence of three morphologically distinct stocks within the Indus River basin. The COX1 sequence-based phylogenetic analysis also showed clear genetic differentiation among the stocks, supported by the Fst score-based heat map. These variations could be attributed to several factors, including uncommon hydrological conditions in these drainages, evolutionary pressures, and reproductive isolation among stocks. This study represents the first attempt to examine the stock structure of S. richardsonii using an integrated approach. The findings thoroughly explain species diversity and evolutionary dynamics in the Northwestern Himalayas and emphasize the importance of preserving genetic diversity and targeted conservation strategies to protect this ecologically significant species.","PeriodicalId":14996,"journal":{"name":"Journal of Applied and Natural Science","volume":"17 2","pages":"600-613"},"PeriodicalIF":0.0,"publicationDate":"2025-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147907050","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Identification and characterizations of a few species of Fusarium infecting cucumber in greenhouse conditions 温室条件下感染黄瓜的几个镰刀菌种的鉴定和特征描述

Journal of Applied and Natural Science Pub Date : 2024-03-20 DOI: 10.31018/jans.v16i1.5297

Ali Nasir Hussein, H. J. K. Al-Janabi, J. K. Al-Janabi, Ali R. Shakir Al-Shujairi

{"title":"Identification and characterizations of a few species of Fusarium infecting cucumber in greenhouse conditions","authors":"Ali Nasir Hussein, H. J. K. Al-Janabi, J. K. Al-Janabi, Ali R. Shakir Al-Shujairi","doi":"10.31018/jans.v16i1.5297","DOIUrl":"https://doi.org/10.31018/jans.v16i1.5297","url":null,"abstract":"One of the most problematic and devastating diseases affecting cucumber production is Fusarium wilt (Cucumis sativus L.). The present study aimed to characterize Fusarium species isolated from three different regions of cucumber fields in Babylon province, Iraq and identify them based on morphological features and phylogenetic analyses. This study showed the presence of Fusarium incarnatum, F. solani and F. oxysporum in cucumber roots. Fusarium species were phylogenetically analyzed based on internal transcribed spacer (ITS) regions. All Fusarium isolates were pathogenic to cucumber cultivars but varied significantly in their growth and pathogenicity toward cucumber seeds during the experiment. F. solani-2 was greater in growth and pathogenicity than all other Fusarium species. In contrast, F. solani-1 was the lowest. The data obtained from morphological and molecular studies sufficiently supported each other, and the phylogenetic trees based on ITS were distinguished. Closely related species and distinctly separated all morphological taxa. These findings are reported for the first time for the cucumber plant in Babylon province. All these ITS sequences showed homologous to those of Fusarium species isolates in the GenBank database with a similarity percentage of 99%. To the best of present knowledge, this is the first molecular record of F. incarnatum on the cucumber plants in Iraq. The study concluded that F. incarnatum was reported for the first time in Iraq and worldwide as a causal agent of wilt disease in cucumber plants. The three species of Fusarium have different pathogenic abilities, highlighting their disease incidence, growth, and pathogenicity. \u0000 ","PeriodicalId":14996,"journal":{"name":"Journal of Applied and Natural Science","volume":" 24","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140388189","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Influence of vegetation index to the rainfall intensity in Pasuruan Area, East Java Province, Indonesia 印度尼西亚东爪哇省 Pasuruan 地区植被指数对降雨强度的影响

Journal of Applied and Natural Science Pub Date : 2024-03-20 DOI: 10.31018/jans.v16i1.5316

Agus Suharyanto, Alwafi Pujiraharjo, M. T. Iqbal, Article Info

{"title":"Influence of vegetation index to the rainfall intensity in Pasuruan Area, East Java Province, Indonesia","authors":"Agus Suharyanto, Alwafi Pujiraharjo, M. T. Iqbal, Article Info","doi":"10.31018/jans.v16i1.5316","DOIUrl":"https://doi.org/10.31018/jans.v16i1.5316","url":null,"abstract":"An increase in population increases the rate of urbanization. This results in changes in land cover from vegetation to artificial material. As a result, much of the land surface reflects the sun's energy. Consequently, this increases the surface temperature of the land. An increase in land surface temperature (LST) will increase the intensity of rainfall. Therefore, the present study aimed to investigate the relationship between the increase in LST and rainfall intensity. Changes in land cover can be detected by normalized difference vegetation index (NDVI) and normalized difference built-up index (NDBI) parameters. Landsat satellite imagery was used to detect NDVI, NDBI, and LST. Image processing was done for imageries scanned in 1995, 2015, 2017, and 2021. Two areas in the East Java Province of Indonesia, namely Malang City and Pasuruan Area, were selected. The daily rainfall intensity data were collected from related rainfall stations in the same year. The Mononobe method was applied to analyze hourly and minute rainfall intensity. IDF curves were drawn from the analyzed results. The relationship between both parameters was analyzed by comparing the LST and hourly rainfall intensity from the IDF curve. The studied results showed that the maximum temperature increase from 1995 to 2021 for the Malang City and Pasuruan Area was 2.60 C and 7.60 C, respectively. For rain, the maximum rainfall intensity increased by 58 mm for Malang City and 18 mm for the Pasuruan Area. LST and rainfall intensity change trends of the two areas had a positive coefficient of regression. The findings can be used to predict the rainfall intensity and floods based on the LST data.\u0000 ","PeriodicalId":14996,"journal":{"name":"Journal of Applied and Natural Science","volume":" 46","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140388482","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Dissecting the biochemical and hormonal changes of thidiazuron on defoliation of cotton CO17 (Gossypium hirsutum) to enhance mechanical harvest efficiency 剖析噻虫隆对棉花 CO17（Gossypium hirsutum）落叶的生化和激素变化，以提高机械收获效率

Journal of Applied and Natural Science Pub Date : 2024-03-20 DOI: 10.31018/jans.v16i1.4860

C. Perumal, Ashok Subiramaniyan, Ashokkumar Natarajan, Rajeshkumar Arumugam, Ajaykumar Ramasamy, Ramadass Sivalingam, Karpagavalli Sivasubramanian

{"title":"Dissecting the biochemical and hormonal changes of thidiazuron on defoliation of cotton CO17 (Gossypium hirsutum) to enhance mechanical harvest efficiency","authors":"C. Perumal, Ashok Subiramaniyan, Ashokkumar Natarajan, Rajeshkumar Arumugam, Ajaykumar Ramasamy, Ramadass Sivalingam, Karpagavalli Sivasubramanian","doi":"10.31018/jans.v16i1.4860","DOIUrl":"https://doi.org/10.31018/jans.v16i1.4860","url":null,"abstract":"Using chemical defoliants to remove cotton leaves represents a groundbreaking shift in cotton cultivation. The mechanization of cotton harvest is increasing, but a substantial amount of foliage that remains on the plant even at maturity is the major barrier for mechanical harvest. Properly completing mechanical and manual harvests requires artificial leaf detachment through defoliants. Still there is no proper defoliant concentration, application times and mechanism of action available. Therefore, the present study aimed to find an effective defoliant and application time to enhance mechanical harvest efficiency, along with a clear description of the mechanism of actions in cotton CO17 (Gossypium hirsutum). The field experiment was conducted during the year 2019-20 and used five concentrations of Thidiazuron defoliant (100, 150, 200, 250 and 300ppm) and Ethephon@0.5% (T2) in cotton variety CO17 to study the physiological, biochemical and hormonal responses at 120, 127 and 134 days after sowing. As a result, the concentrations of plant growth hormones, indole-3 acetic acid (4.9 fold), zeatin (32.7%) and gibberellic acid (7 fold) reduced. In contrast, abscisic acid (48.6%), jasmonic acid (34.9%), salicylic acid (2.15 fold) increased in the T7- Thidiazuron + Diuron (300 ppm) treatment followed by T5-Thidiazuron + Diuron (200 ppm). Additionally, the antioxidant enzymes ascorbate peroxidase, peroxidase, catalase, superoxide dismutase, cellulase in leaves, petiole and bolls were decreased due to defoliant T5- Thidiazuron + Diuron (200 ppm) followed by T7-Thidiazuron + Diuron (300 ppm), indicating that the hormone concentration, antioxidative and hydrolytic enzymes are ruled out and forces the defoliation process.\u0000 ","PeriodicalId":14996,"journal":{"name":"Journal of Applied and Natural Science","volume":" 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140388970","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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