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Produktivitas Tanah Pertanian

Produktivitas tanah pertanian merupakan suatu konsep ekonomi yang ditentukan oleh 3 faktor, yaitu: (1) sistem pengelolaan tanah, (2) hasil (produksi), dan (3) jenis tanah. Nilai tanah pertanian sangat tergantung pada nilai produktivitas tanah, semakin produktif, maka nilai tanah pertanian semakin tinggi. Dalam pengelolaan tanah pertanian ada dua aspek yang perlu dipertimbangkan, yaitu: (1) Kapasitas (daya dukung) tanah. Setiap jenis tanah ...

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Attack Symptoms In Seaweed

Semangun (1996) describes plant diseases when viewed from the angle of biology is a deviation from normal trait that causes the body can not perform normal physiological activities, while from the economic angle plant diseases is the inability to deliver sufficient results, both quantity and quality. Microorganisms (microbes) are not directly cause a disease, but outside circumstances have weakened the ...

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Teknik Penanganan Sampel

Setelah pengambilan sampel, air sampel sebaiknya segera dianalisis. Jika terpaksa harus disimpan, setiap parameter kualitas air memerlukan perlakuan tertentu terhadap sampel. Selain perlakuan dengan bahan kimia, pengawetan yang paling umum dilakukan adalah pendinginan pada suhu 4ÂșC selama transportasi dan penyimpanan. Pada suhu tersebut, aktivitas bekteri terhambat. Sampel yang ditunda pengukurannya dan terpaksa harus dilakukan penyimpanan sebaiknya dilakukan labeling pada botol ...

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Sampling Water Lake or Reservoir

Water sampling at the point of lake or reservoir is set according to the following provisions; On lakes or reservoirs with a depth of less than 10 m, water samples were taken from two points, namely at the surface and at the bottom of the lake / reservoir On lakes or reservoirs with depths between 10 m – 30 m, ...

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Air Sampling Equipment

Once the location and designation of the sample is determined, it can be done the preparation beforehand infrastructure to facilitate sampling. facilities and infrastructure that need to be prepared include: Water sampling equipment must meet the following requirements: Made of materials that do not affect the properties of the water sample (eg metals for inspection, sampling tool is not made ...

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Damage Symptoms Seaweed

Symptoms of seaweed damage caused by predation can be grouped based on their characteristics to identify pests that attack seaweed. Grouping based on characteristics are: a) Gouging (blister) is a small wound on thalus seaweed, slightly flaky pigment layer as if no damage. This attack can be caused by slugs or sea star larvae b) Planing, shows damage such as ...

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