Tang Ting Tung Kebutuhan Air

Apa hubungan antara kasur busa dengan media tanam? Keduanya sama-sama menyimpan air di bagian dasar jika disiram hingga jenuh. Jika risiko genangan air di kasur adalah kasur rusak, ancaman genangan air di media adalah akar-bahkan tanaman-busuk. Lalu dari mana kita tahu media itu jenuh air atau tidak? Jawaban yang saya dapat dari coba-coba sederhana bermacam-macam, tergantung media yang dipakai.

Masih ada air yang tertahan di media

Pasir malang paling sedikit menyimpan air (55 cc) dibanding media campuran pasir malang, sekam

Pasir halus di pot ke-2 menyerap kelebihan air di pot pertama. Ini cara terbaik menanam sukulen

Media pasir malang paling sedikit menyimpan air, sekam bakar paling banyak. Volume air yang dihitung adalah volume air setelah pot disiram sebanyak 1,32 l atau 1 gayung. Air berlebih segera keluar dari dasar pot. Lalu pot didiamkan sampai tak ada lagi air menetes. Setengah jam kemudian pot dimiringkan 500. Dengan posisi seperti itu ternyata air masih mengalir keluar. Volume air itulah yang diukur.

Pada percobaan dengan media pasir malang, yang ditampung hanya 55 cc. Dengan media campuran pasir malang, sekam bakar, dan kompos dengan perbandingan sama air, 151 cc. Sementara jika medianya sekam bakar murni 230 cc. Mengapa bisa seperti itu, padahal tadi selama 30 menit ditunggu tak ada lagi air yang keluar? Itu berhubungan dengan daya kapiler.
Tanaman kering

Penggunaan potongan styrofoam atau kerikil di bagian dasar pot yang lazim dilakukan ternyata membuat air lebih banyak tertahan di media. Itu karena daya kapiler styrofoam atau kerikil lebih kecil daripada media sehingga sisa air di media tidak tertarik styrofoam atau kerikil. Jika mau ‘mengambil’ air tertahan di media gunakan bahan yang punya daya kapiler lebih besar daripada media tanam yang dipakai.

‘Bahan’ yang punya daya kapiler besar antara lain tanah merah dan tanah liat. Jika media di pot bisa kontak l;angsung dengan tanah, maka media lebih cepat kering. Masalahnya sulit mengatur adanya kontak antara media dengan tanah yang dipilih. Padahal itu salah satu syarat terjadinya daya kapiler. Tanpa kontak langsung maka daya kapiler tanah tidak bisa meniadakan daya kapiler media.

Maka dicobalah pasir. Pasir halus punya daya kapiler paling besar ketimbang pasir-pasir lainnya. Pasir disimpan di dalam pot ceper dengan ketinggian tertentu. Lalu pot berisi tanaman disimpan di atasnya. Untuk memastikan ada kontak antara media dan pasir maka di bagian dasar pot diberi pasir juga. Hasilnya? Air yang tersimpan di media akan ‘tertarik’ keluar menuju pasir. Ketika sudah tersimpan di pasir pot ceper, air lebih mudah untuk pergi melalui proses penguapan.

Pada tanaman yang suka kering-misal gasteria, haworthia, dan echeveria-kombinasi penggunaan media pasir malang dengan ‘bak’ pasir di bawah pot tanaman paling baik. (dr Budiardjo, pencinta tanaman hias di Jakarta)

http://www.trubus-online.co.id/mod.php?mod=publisher&op=viewarticle&cid=1&artid=1952

This article was translated by Google Translator. Thank you Google.

Tung Ting Tang Water Needs

What is the relationship between foam mattress with a planting medium? Both are storing water in the bottom if watered until saturated. If the risk of standing water in the mattress is a mattress is damaged, the threat of waterlogging in the media is even plant-root-rot. Then how do we know the media is saturated water or not? The answer I get from a simple trial and error varies, depending on the medium used.

[Caption id = "" align = "alignnone" width = "125" caption = "There is still water suspended in the media"] [/ caption]

[Caption id = "" align = "alignnone" width = "125" caption = "Sand poor at least keep the water (55 cc) compared to poor sand mixed media, chaff"] [/ caption]

[Caption id = "" align = "alignnone" width = "125" caption = "The fine sand-2 in the pot to absorb excess water in the pot first. This is the best way to grow succulent"] [/ caption]

Poor sand media at least save water, husk fuel at most. Calculated volume of water is the volume of water after flushing the pot as much as 1.32 l or 1 scoop. Get out excess water from the bottom of the pot. Then the pot is left in place until no more water drips. Half an hour later the pot is tilted 500. With a position like that of water was still flowing out. The volume of water that was measured.

In experiments with poor sand media, which accommodated only 55 cc. With a mix of media poor sand, husk fuel, and compost with the same ratio of water, 151 cc. Meanwhile, if the medium 230 cc of pure husk fuel. Why be like that, but last for 30 minutes waiting no more water coming out? It relates to the capillary.
Plant dry

The use of pieces of styrofoam or gravel at the bottom of the pot is commonly done was to make more water retained in the media. That's because the capillary Styrofoam or gravel is smaller than the media so that the remaining water in the media are not interested in Styrofoam or gravel. If you want to 'take' of water suspended in the media are using materials that have a power greater than the capillary growing media used.

'Material' which had a large capillary power, among others, the red earth and clay. If the media in the pot can contact l; angsung with soil, then the media dry faster. The problem is difficult to arrange for contact between the media with the selected soil. And that's one of the conditions of capillary power. Without direct contact soil capillaries then power can not negate the power of capillary media.

So dicobalah sand. The fine sand had the greatest capillary power than other sands. Sand deposited in shallow pot with a certain height. Then the pot containing the plant are stored on it. To ensure no contact between the media and the sand at the bottom of the pot given the sand as well. The result? Water stored in the media will be 'drawn' out into the sand. When the pot is already stored in the sand flat, the water is easier to go through the process of evaporation.

In plants that like dry-gasteria eg, haworthia, and combinations of media use echeveria-poor sand with 'like' sand in the bottom of the pot plants are best. (Dr Budiardjo, lover of ornamental plants in Jakarta)

http://www.trubus-online.co.id/mod.php?mod=publisher&op=viewarticle&cid=1&artid=1952