The quality of water from surface water sources observed by dissolved oxygen (DO), biological oxygen demand (BOD) and chemical oxygen demand (COD). High population and density areas will increase waste from households, which also increase levels of ammonia and hydrogen sulfide. Ammonia dissolved in water and will produce nitrate compounds (NO 2 ). Nitrite is very harmful, it caused Methaemoglobinemia in infants under 3 months. The purpose was to determine nitrite in the water, water conditions and criteria in Kelurahan Meteseh, Kecamatan Tembalang, Kota Semarang. The method used observation and laboratory, and analyzed with quantitative descriptive approach, determine the sample with purposife sampling method. Research shows that there are some wells in Dinar mas housing , water wells in Dinar Elok housing and water wells in Perumahan Dinar Indah, Perumahan Dinar Elok, and Perumahan Puri Dinar Asri contaned nitrite has exceeded the specified UU No. 82 of 2001. ABSTRAKKualitas air dari suatu sumber air permukaan dapat dilihat atau diamati dari kandungan oksigen terlarutnya (DO), kebutuhan biologi akan oksigen (BOD) dan kebutuhan kimiawi akan oksigen (COD). Jumlah penduduk yang relatif tinggi, serta kepadatan wilayah pemukiman akan menyebabkan limbah buangan rumah tangga berupa limbah organik akan meningkat yang disertai peningkatan kadar amonia dan hidrogen sulfida. Amonia larut di dalam air dan akan membentuk senyawa amonium yang cenderung mengikat oksigen. Senyawa amonium dan oksigen akan membentuk senyawa nitrit (NO 2). Nitrit sangat berbahaya untuk tubuh terutama bayi di bawah umur 3 bulan, karena dapat menyebabkan methaemoglobinemia. Tujuan dari penelitian ini adalah mengetahui kadar nitrit air sumur gali, kondisi air dan kriteria air sumur di kelurahan Meteseh, Kecamatan Tembalang Kota Semarang. Metode yang digunakan adalah observasi langsung dan pengamatan laboratorium, kemudian dianalisis dengan pendekatan deskriptif kuantitatif, penentuan sampel dengan metode purposife sampling. Hasil Penelitian menunjukkan bahwa terdapat

The groundwater condition at converted agricultural land has decreased water quality because of previous agricultural processes, so the water quality index is essential to know. This study aims to measure the groundwater quality index in residential wells on the converted agricultural land, determine the dominant parameters that form the Water Quality Index (WQI) in dug wells and drilled wells on the converted agricultural land, and determine the effect depth and age of wells on WQI. The research design was descriptive exploratory with WQI as the dependent variable and the depth and age of the well as the independent variable. With purposive sampling, 32 points of dug and drilled wells in different locations were chosen. Multiple linear regression was applied for data analysis. From the findings, it can be concluded that the minimum WQI value in dug well water is 76.9, and the average maximum WQI value in dug well water is 92.3. There are 8 points in dug well water with WQI in a good category or quality-2 category (71-90), and 15 dug well points have WQI in a very good quality category or quality-1 category (91-100). This value indicates that the dug well water quality in the research location is still classified as eligible for consumption. The dominant parameters that form WQI values in dug and drilled wells are manganese, cadmium, iron, with a value of -0.918 -0.886 -0.790. The depth and age of the well affect the water quality index. The depth of the well has a stronger effect on the water quality index than the age of the well.

This study aims to determine the daily egg production level (HDP) and Break Event Point (BEP). The research location and respondents were determined intentionally (purposive sampling) with a total of 4 farmers consisting of 1,000 tail respondents, 1,350 heads, 4,500 heads and 6,000 heads. The data used are primary and secondary data. Data collection techniques are carried out by interviewing, recording and observing. The analysis model used is a descriptive analysis model with verbal and mathematical methods. The verbal method is a way of using words to explain a thing, while a mathematical method uses break event point (BEP) analysis. Based on the results of the study it was found that the production level of 51-day Hen Day production (HDP) of laying hens aged 85 weeks between 85.1% -85.3% . Break Event Point (BEP) production obtained from a scale of 1,000 head was 30,379.5 kg, 1,350 tails of 36,282.5 kg, 4,500 tails of 124,180 kg, and 6,000 tails of 159,231.5 kg. Break Event Point (BEP) prices on a 1,000-tail scale of Rp. 16,893, 1,350 scale of Rp. 14,965, a 4,500 scale of Rp. 15,349 and the scale of 6,000 is Rp. 14,698. The conclusion of this study is that the HDP level is still below standard because the maintenance system for laying hens has not been maximized while the yield of the product and the rupiah is above the BEP value so that the laying hens business produces profits

Purpose of this research is to know the acceptance level, income and the factors that is affecting the level of sugarcane farmers income. Regional sampling method and respondent sampling are conducted by purposive sampling method which is set a lend area sampled is 1 – 3,5 acres. Number of samples are taken by 59 respondents of the sugarcane farmers who are scattered in several villages at the Pangkah sub District. The analysis method used is descriptive analysis, cost analysis, revenue, income and multiple linear regression. The result of the study indicate that the average cost is obtained by the total cost Rp. 54.953.884. The revenue is obtained Rp. 82.979.127, while the income earned Rp. 28.025.243 every harvest time. The result of multiple liniear regression is known that the determination coefficient (R2) is 0.848. Meanwhile the result of testing t test obtained by educational factors have significant 0.042 which mean have a real impact to income at 5% real level. The ages factors have significant 0.001 which mean have a real impact to income at 1% real level. The land area have significant 0.044 which mean have a real impact to income at 5% real level. The labours have significant 0.001 which mean have a real impact to income at 1% real level. The amount of production have significant 0.000 which mean have a real impact to income at 1% real level. Keywords: Income, Sugarcane, farmers, Regression, Pangkah

Alfalfa plant in Indonesia its not easy to produce flowers and seeds. Flower production is also affected by cutting the apical bud. At this time there is no research on the effect of cutting the length of the apical bud of the flower and seed production of alfalfa, both in quantity and quality. Thus this study examines the apical bud cutting the length of the seed production and alfalfa leaf chlorophyll content. The purpose of this study was to determine the most optimal length of the apical bud cutting to produce optimal growth and production of alfalfa seed. Outcomes and benefits of this research are: a). Provide information for other researchers on seed production and alfalfa leaf chlorophyll content were treated with different apical bud cutting, which will carry out further research. b). Provide recommendations to stakeholders on the apical bud cutting the most optimal for alfalfa plants that produce highest seed production and alfalfa leaf chlorophyll content. c). Providing information for farmers and researchers on alfalfa seed development opportunities for the tropic zone. Research using randomized complete block design with four replications. This study was a single-center trial with a treatment of various lengths cutting apical bud. Apical bud cutting long treatment include without cutting, cutting apical bud length of 5 cm, 10 cm, 15 cm, 20 cm and 25 cm from the ground. When cutting is done when the plants aged 6 weeks after planting. The results of the study showed that the alfalfa plant leaf extract can be produced which is solid green chlorophyll that has the potential to be used as raw material for the manufacture of supplement health drinks. Alfalfa flower has emerged in the 4th month, this occurred in the treatment of cutting 5 cm. It shows the probability that the flower has the potential to develop into seeds. Keywords: alfalfa, cutting, chlorophyll, seeds, apical bud

The development of population will be followed by efforts to fulfill facilities and infrastructure also development efforts and the impact is land conversion. Land which often get conversion is rice field, so it causes shrinkage of rice field land. This study aims to determine the extent and shrinkage rate of rice field in Semarang. The method used in this study was imagery satellitein 2000-2019 and calculated with ArcGIS 10.6.1. The results showed that in Semarang there are rice fields shrinkageabout 2,368 hectares (Ha)from 2000 to 2019 or 50,81% of shrinkage rate.

Sale pisang merupakan produk makanan ringan yang terbuat dari buah pisang yang diawetkan dengan cara pengeringan. Agroindustri merupakan salah satu upaya guna menambah nilai jual dan dapat menambah umur simpan dari produk tersebut. Proses pengolahan (agroindustri) sebagai alternatif dalam pengurangan resiko pembusukan dari komoditas pertanian seperti buah pisang. Buah pisang yang digunakan sebagai bahan baku pembuatan sale pisang adalah pisang uter. Pisang uter termasuk pisang buah yakni bisa langsung dimakan tanpa diolah terlebih dahulu. Metode yang digunakan adalah analisis deskriptif kuantitatif, sementara analisis data diantaranya analisis keuntungan, R/C dan nilai tambah. Penentuan responden menggunakan metode sensus sebanyak 25 pengolah yang distratifikasi menjadi tiga kategori usaha berdasarkan jumlah output yang dihasilkan yaitu usaha skala kecil 5 pengolah, usaha skala sedang 19 pengolah dan usaha skala besar 1 pengolah. Hasil penelitian dalam periode satu bulan produksi yaitu pada bulan Februari tahun 2020 menunjukkan bahwa rata-rata total penerimaan usaha skala kecil Rp 4 096 000 dengan total biaya Rp 3 377 963, serta rata-rata keuntungan yang diperoleh adalah Rp 718 038. Usaha skala sedang, rata-rata total penerimaan Rp 7.208.421 dengan total biaya Rp.5.547.040, serta rata-rata keuntungan yang diperoleh adalah Rp 1 661 381. Usaha skala besar, rata-rata total penerimaan Rp 49.920.000 dengan total biaya Rp 29 136 564, serta rata-rata keuntungan yang diperoleh adalah Rp 20.783.436. Nilai R/C berturut-turut dari usaha skala kecil yaitu 1.21, 1.30 dan 1.71. Nilai tambah dari hasil pengolahan pisang menjadi sale pisang berturut-turut dari usaha skala kecil sebesar Rp 8.364.81/kg (40.11%), Rp 8.534.57/kg (41.10%) dan Rp 12.568.42/kg (50.35%).

Sawi Pakcoy (Brassica rapa subsp. Chinensis) memiliki peluang pasar yang cukup tinggi, tanaman ini berkembang pesat di daerah tropis dan subtropis. Penelitian ini bertujuan untuk mengetahui tingkat biaya penerimaan dan pendapatan usahatani sawi pakcoy (Brassica rapa subsp. Chinensis) di Desa Sumberejo Kecamatan Ngablak Kabupaten Magelang dan mengetahui kelayakan usahatani sawi pakcoy (Brassica rapa subsp. Chinensis) ditinjau dari BEP dan R/C di Desa Sumberejo Kecamatan Ngablak Kabupaten Magelang. Metode dasar yang digunakan yaitu metode diskriptif kuantitatif. Metode penentuan lokasi dilakukan secara sengaja (purposive). Penentuan pengambilan sampel responden menggunakan sampel jenuh. Populasi dalam penelitian ini adalah seluruh petani usahatani sawi pakcoy di Desa Sumberejo, Kecamatan Ngablak, Kabupaten Magelang yang berjumlah 10 petani. Analisis data dilakukan dengan menghitung biaya, penerimaan, pendapatan, BEP (Break Even Point) dan R/C. Hasil analisis menunjukkan bahwa : (1) besarnya biaya total yang dikeluarkan oleh petani di Desa Sumberejo Kecamatan Ngablak Kabupaten Magelang sebesar Rp. 2.267.033 per musim tanam, (2) besarnya produksi sawi pakcoy 1.117 kg dengan harga jual Rp. 4.000 maka diperoleh penerimaan sebesar Rp. 4.468.000 per musim tanam, (3) besarnya pendapatan yang diterima petani sawi pakcoy di Desa Sumberejo Kecamatan Ngablak Kabupaten Magelang sebesar Rp. 2.200.967 , (4) besarnya BEP unit yaitu sebesar 567 kg/musim, BEP harga Rp. 2.066, (5) Nilai R/C sebesar 2,0 artinya setiap Rp. 1,00 biaya yang dikeluarkan, maka diperoleh penerimaan sebesar Rp. 2,0 pada kegiatan usahatani sawi pakcoy ini layak di usahakan.