PENGARUH PEMBERIAN PUPUK NPK DAN FITOSAN TERHADAP KADAR BRIX BATANG DAN HASIL TANAMAN SORGUM (Sorghum bicolor L. Moench ) DI TANAH PASIRAN LAHAN KERING KABUPATEN LOMBOK UTARA, NTB

Kadar brix batang sorgum berkisar 13-18 % sementara produktivitas sorgum di lahan kering umumnya masih relatif rendah (1-3 ton/ha). Penelitian ini bertujuan mencari cara meningkatkan kadar brix dan produktivitas sorgum di tanah pasiran di lahan kering. Percobaan menggunakan metode eksperimental, dengan Rancangan Acak Kelompok faktorial terdiri atas Phonska 3 aras, yaitu P0 (kontrol), P150, P300 dan Fitosan 2 aras, yaitu F0 (kontrol) dan F5. Masing-masing perlakuan diulang 3 kali sehingga terdapat 6 kombinasi perlakuan, yaitu kontrol (P0F0), tanpa pupuk Phonska dan Fitosan 5 ml/liter (P0F5), pupuk Phonska 150 kg/ha dan tanpa Fitosan (P150F0), pupuk Phonska 150 kg/ha dan Fitosan 5 ml/liter (P150F5), pupuk Phonska 300 kg/ha dan tanpa Fitosan (P300F0), pupuk Phonska 300 kg/ha dan Fitosan 5 ml/liter (P300F5) dengan ukuran petak 3,5 m x 5 m. Data dianalisis menggunakan analisis keragaman (ANOVA), dilanjutkan Uji BNJ 5% terhadap perlakuan yang berbeda nyata. Hasil: pemberian pupuk Phonska dan Fitosan dapat meningkatkan kadar brix sehingga mencapai titik optimum pada umur 86 HST yaitu 19,34%. Pemupukan Phonska 300 kg/ha dan ZPT Fitosan 5ml/liter memberikan hasil yang lebih baik terhadap hasil tanaman sorgum sebesar 3,40 t/ha untuk Phonska dan 2,92 t/ha untuk Fitosan

The Fate of Glyphosate in Soil and Water: A Review

The fate of glyphosate in soil and water is dependent on the properties of glyphosate and its envoronement. Behaviour of glyphosate in soil, sediment and water is strongly influenced the way by which it can be adsorbed by soils, sediments, and suspended material in water. The role of soil organic matter, clay mineral, and amorphous minerals on the adsorption of glyphosate depends primarily on the nature and properties of the soil itself and the properties of glyphosate. Environmental factors have some influence on sorption and degradation of glyphosate. Glyphosate is rapidly inactivated in soil, is in part due to adsorption. Some soil properties have been identified strongly influence adsorption of glyphosate, such as clay minerals, composition of cations in exchangeable site of clay and organic matter, unoccupied phosphate adsorption site, degree of humification, and soil pH. Adsorption limits the availability of glyposate for microbial degradation. The sorbed glyphosate is not directly available to microorganisms in soil. Evidence also suggests that not only a strongly sorbed compound such as paraquat but also weakly sorbed compounds such as flumetsulam and picloram can persist for long periods when they are sorbed by soil constituents. This suggests that the interaction between sorption and biodegradation should be considered in predicting the fate of pesticides in soils and sediments

PENGELOLAAN UNSUR HARA TERPADU DALAM BUDIDAYA TANAMAN PORANG (REVIEW)

Elephant food yam (Amorphophallus muelleri Blume) is an important tuber plant that is grown in most of the tropical countries including Indonesia and is a very profitable export commodity. Soil nutrients availability is one of the most important factors that determine the production of elephant food yam plants. However, there is no single nutrient source, either from inorganic fertilizers or organic fertilizers or biological fertilizers, which is able to meet all the nutrient needs of the plants grown. Therefore, integrated nutrient management (INM) of elephant food yam plants seems to be a way out to maintain sustainable production and increase profitability. This paper reviews the results of research on various issues of INM-based production management for elephant food yam plants and analyzes the extent of research on the use of INM both in Indonesia and abroad. The benefits of integrated nutrient management are well documented for vegetable crops. However, it is still very little available for elephant food yam plants, especially in Indonesia. Integrated nutrient management (INM) is a very important technological innovation to be applied to elephant food yam cultivation. Elephant food yam is a high nutrient consumeplant, so a wise and precise combination of inorganic and organic fertilizers as well as bio-fertilizer will result in sustainable and sinergistic use of soil nutrients of elephant foot yams. Therefore, recommendations for research need for INM of elephant food yam should be carried out in order to increase the production of it in a sustainable manner

Evaluation of Physical Properties of Soil Determinants Glucomannan Content of Porang Tuber (Amorphophallus muelleri) in Entisols of North Lombok

Porang (Amorphophallus muelleri) is a tuber plant that contains the compound of glucomannan which has high economic value with a number of benefits, including as an industrial raw material. The glucomannan content of porang tubers has received special attention in research, including field research to determine soil properties that influence growth and content of gucomannan in porang tubers. A field survey has been carried out to determine the physical properties of soils that influence the glucomannan content of porang tubers grown in four clusters of agroforestry in the dry land of North Lombok, Eastern Indonesia. The results of the research showed that the physical properties of the soil that had a significant effect on the glucomannan content of porang tubers were soil bulk density (BD) with an R2 value of 53.15%, soil porosity with an R2 value of 60.23%, and silt particle fraction with an R2 value of 23. 47%. Thus, managing soil physical properties to facilitate the better quality of porang tubers is necessary

Application of Liquid Bioactivator Contains Trichoderma Spp. and Elements of Boron (B) as Growth of Growth and Improvement of Red Onion (Allium Cepa L.) Results

The purpose of this study was to determine whether there is an interaction between the use of Trichoderma Bioactivator spp. with boron, see if the bioactivator Trichoderma spp. able to spur growth and be able to increase the productivity of onion yields, and see whether the addition of boron (B) can spur growth and can increase the productivity of onion yields. The method used in this study is an experimental method in the field. The research was carried out in the Pengangget Village, Senteluk Village, Batulayar Subdistrict, West Lombok and at the Microbiology Laboratory of the University of Mataram. The material used in this study was shallot (Allium cepa L.) type of Keta monca variety, Trichoderma spp. in the form of T. harzianum (SAPRO-07 isolate), and boron type di-Sodium Tetraborate Decahydrate. To find out the difference in growth and yield of shallots (Allium cepa L.) using biochemical activator Trichoderma spp. and boron, it is used a variety analysis test with a significance level of 5% using the application of Minitab 16, if the results of the analysis show a real difference then a further test using BNJ at the same level. The results showed that: 1) From the research carried out it was found that the administration of Trichoderma spp. and boron can stimulate plant growth and be able to increase the yield of onion productivity. 2) Provision of Trichoderma biopivator spp. and boron has a significant effect between each treatment, both in terms of the various dose doses that exist in each treatment. Provision of Trichoderma spp. and boron also have a significant effect on each variable of onion growth in the form of; plant height, number of leaves, number of tillers (tubers), wet weight and dry weight of onion, total population of Trichoderma spp., total boron content and an increase in the amount of nutrients in soil characteristics. 3) There is no interaction between the administration of Trichoderma spp. and boron as a trigger for the growth of shallots on various growth variables; plant height, number of leaves, number of tillers (tubers), wet weight and dry weight of onion, population of Trichoderma spp., and total boron content. 4) Bioactivator Trichoderma spp. with the highest dose of 20 ml and boron with a concentration of 0.238 g / cm3 can increase the amount of nutrients, including; organic C content as much as 0.83%, total N as much as 0.076%, P is available 110.76 ppm, K is exchanged by 77.73 meq%, soil pH is 7.21 and soil CEC is 14.12 meq%

Determination of PEG (Polyethlenee Glycol) Concentration and Dosage to Evaluate The Resistance of Rice (Oryza Sativa L.) to Drought

The writing is intended to assess the response of rice plants to the germination phase through induce concentrations and a dose of the PEG. Library research is used in this writing by locating and collecting libraries that were generated by earlier research. As for the data obtained in this writing, it is the result of analysis of various vets and rice varieties of Cempo Laut, Edok, Mutant Galurses (M5-GR150 1-4, M5-GR150 1-9, M5-GR200 1-2, M5-GR150 2-2, M5-GR150 2-3), Legowo, Malihan Ketan, Mlarak 1, Inpago, IR 64, Palenok, Philips, Radix. Concentrations of PEG 6000 and 8000 with a dose of 0%, 5%, 15%, 20% and 25% induced, then treated with the best denunciation. Observation data indicate that each response is different. PEG concentration of 8000 and dose of -0.5 MPa gave the best germination power

Kajian Sifat Fisik Tanah Ustifluvents Sekotong Terkait Kandungan Merkuri (Hg) Dalam Tanah: Assesment of Physical Properties of Ustifluvents Sekotong Releted to Mercury (Hg) Content in Soil

People's gold mining in Sekotong, also known as Unlicensed Gold Mining (PETI), causes environmental pollution problems because located at the surrounding community processes gold using the amlagamation technique with the help of mercury (Hg) in binding gold. Mercury waste discharged directly into the environment could have adversely affects public health and degrades soil and water quality. The presence of mercury in the soil is strongly influenced by soil characteristics, one of which is soil physical properties. The purpose of this study was to determine the relationship between the physical characteristic ustifluvents Entisol soil of Sekotong soil and mercury content at 0-20 cm soil depth. This research was conducted using descriptive method with survey technique. Soil sampling was conducted at 3 location points near the logs and tailling at a depth of 0 - 10 cm and 10-20 cm, each location point was replicated 3 times. The selection of soil sample points was based on contour differences that affect the proportion of mercury content at each soil depth. The results showed that the highest mercury content was at point 3 with an average value of 0.3089 ppm and there was a strong to very strong relationship between soil physical properties and Hg content

The Role of Biochar and Combination of Inorganic Fertilizers and Biological Fertilizers in Increasing Yield and Levels of Brix Sorghum (Sorghum bicolor (L.) Moench) in Dry Land

Research on the role of biochar, inorganic and biological fertilizers was aimed to increase crop yield and brix value of sorghum in dryland. This research was conducted from October 2020 to February 2021 at The Teaching Farm Soil Science Study Program, Akar-Akar Village, Bayan, North Lombok. The method used in this research is an experimental method, with the experimental plot in the field. The experiment consisted of two factors, was designed using a split plot design. Biochar as the main plot with 2 treatment levels, b0 (without biochar) dan b1 (biochar 20 ton/ha); combination of fertilization as subplots with 4 treatment levels, namely p0 (without fertilizer), p1 (200 kg/ha NPK + 150 kg/ha Agrosil), p2 (20 ml/liter PGPR), and p3 (200 kg/ha NPK + 150 kg/ha Agrosil + 20 ml/L  PGPR). The research showed that interaction between biochar and combination of fertilizers is not significant, but the combination of inorganic and biological fertilizers significantly increased sorghum's productivity and brix value. The combination of inorganic and biological fertilizer (p3) is the best treatment to increase weights 1000 seeds (31.29 g), yield (25.96 kg/plot), and brix value (14.55%

Komparasi Perubahan Tutupan Lahan di Gili Meno, Gili Trawangan dan Gili Air (Gili Matra): Comparison Land Cover Change in Gili Meno, Gili Trawangan dan Gili Air (Gili Matra)

This research aims to determine changes in land cover on Gili Meno, Gili Trawangan, and Gili Air as small islands in West Nusa Tenggara Province. The method used in this research is a qualitative descriptive method in comparing land cover changes on each island and also spatial analysis using Google Earth satellite image data in 2013 and 2022. The research results show seven land cover classifications consisting of built-up land, open land, stretches of beach sand, water bodies, plantations, bushes, and mangroves. Based on the analysis of land cover changes in Gili Trawangan, Gili Meno, and Gili Air, a trend of increasing built-up land area for ten years from 2013 to 2022. The most significant increase in built-up land occurred on Gili Trawangan, namely 48.14 Ha. It was followed by Gili Air and Gili Meno, respectively 24.86 ha and 23.71 ha. The driving factor for changes in land cover on Gili Matra is policies from the central, provincial, and regional governments regarding the promotion and establishment of Gili Matra as a tourism destination in NTB Province. Furthermore, this policy impacts the growth of tourists and the number of residents. It causes an increase in the need for tourism-supporting facilities. Therefore, there is a change in land cover, which gradually reduces the area of undeveloped land on Gili Matra