Musim Hujan dan Dampak Bagi Tanaman.

Rekan-rekan …, Ikutan nimbrung diskusi �??musim hujan�?� dari sisi yang lain. Menurut hemat saya, musim hujan dapat dibagi menjadi tiga fase.

1. Awal musim hujan (akhir musim kemarau)
Ciri, sinar matahari cukup banyak, suhu udara panas, kelembaban udara absolute (Ah) tinggi, kelembaban udara relatip (Rh) tinggi, hujan masih jarang terjadi, dan sumber air tanah maupun air permukaan sedikit.
Dampak bagi tanaman :
Proses transpirasi (proses pendinginan) terganggu karena tingginya nilai Rh. Keadaan ini diperparah dengan sulitnya proses pendinginan secara konduksi lewat daun, karena bahang panas pada fase musim ini juga tinggi. Akibatnya tanaman akan kepanasan, daun dan batang tanaman nampak layu meski masih nampak hijau. Kalau kondisi parah ranting dan daun akan menguning dan rontok.

Kesalahan yang sering dilakukan pada fase ini, melihat tanaman nampak layu timbul anggapan tanaman kurang air. Padahal kelayuan muncul bukan karena kekurangan air (seperti pada musim panas), namun akibat terganggunya proses penyerapan air karena transpirasi terhambat. Dampak selanjutnya gampang diduga, zona akar akan kelebihan air dan mengundang penyakit.

2. Pertengahan musim hujan
Ciri, sinar matahari terhalangi mendung, suhu udara turun, kelembaban udara absolute (Ah) turun / rendah, kelembaban udara relatip (Rh) tinggi, frekwensi hujan tinggi, dan sumber air tanah maupun air permukaan melimpah.

Dampak bagi tanaman :
Kelembaban (Rh) tinggi pada suhu yang rendah merupakan kondisi ideal pertumbuhan spora jamur. Tanaman yang tidak sehat atau bagian tanaman yang tua menjadi rentan serangan jamur. Genangan-genangan air pada bagian batang, bonggol, dan daun (bagian-bagian yang kaya karbohidrat) cepat atau lambat akan diserbu jamur.

3. Akhir musim hujan (awal musim kemarau)
Ciri, sinar matahari mulai banyak terlihat, suhu udara naik, kelembaban udara absolute (Ah) naik / tinggi, kelembaban udara relatip (Rh) turun/rendah, hujan semakin jarang terjadi, dan sumber air tanah melimpah sedang air permukaan menurun.

Dampak bagi tanaman :
Transpirasi dapat berjalan dengan baik dan dengan demikian proses penyerapan nutrisi dapat berlangsung dengan baik pula. Proses pertumbuhan tanaman dimulai kembali.

Apakah pembangunan �??green house�?� dapat memecahkan masalah musim hujan. Seperti Pak Fariz ungkapkan, penanganan green house yang tidak tepat justru akan memperparah keadaan, �??menyelesaikan masalah dengan menambah masalah baru�?�.

Demikian rekans, pemahaman saya tentang musim hujan.

Thari Wie
www.omahijo.com

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

Rainy Season and the Impact For Plants.

... Colleagues, chipped Follow-up discussion? Rainy season? From the other side. In my opinion, the rainy season can be divided into three phases.

1. Beginning of the rainy season (late dry season)
Characteristics, enough sunlight, hot air temperature, absolute humidity (Ah) height, relative humidity (Rh) high, rain is rare, and the source of ground water and surface water a bit.
Impact on plants:
Transpiration process (cooling process) is disturbed because of the high value of Rh. This situation is exacerbated by the difficulty of the process of conduction cooling through the leaves, because the heat in the hot phase is also high season. As a result the plant will be too hot, the leaves and stems of wilted plants appear green, though still visible. If severe conditions of twigs and leaves will turn yellow and fall off.

Mistakes are often made in this phase, see the plant appears wilted plants presumption arises less water. Though kelayuan arises not from lack of water (as in summer), but due to disruption of the process of water absorption due to transpiration is inhibited. Subsequent impact easily expected, the root zone would be an excess of water and invite disease.

2. Mid-rainy season
Characteristics, overcast blocked the sun, the air temperature falls, the air absolute humidity (Ah) down / low, relative humidity (Rh) high, the frequency of high rainfall, and groundwater sources and surface water is abundant.

Impact on plants:
Humidity (Rh) high at low temperatures are ideal conditions for the growth of mold spores. Unhealthy plants or plant parts that parents become vulnerable to attack fungi. Puddles of water on the stems, tubers, and leaves (the parts that are rich in carbohydrates) will sooner or later the fungus invaded.

3. End of rainy season (early dry season)
Characteristics, the sun began much visible, the air temperature rises, the air absolute humidity (Ah) rise / high, relative humidity (Rh) down / low, more rain is rare, and ground water resources are abundant surface water decreased.

Impact on plants:
Transpiration can be run properly and thus the absorption of nutrients can take place well too. Plant growth process begins again.

Is development?? Green house? Can solve the problem of the rainy season. As Mr. Fariz has noted, the handling of green house that is not right it will aggravate the situation,?? Resolve the problem by adding new problems?.

Rekans Similarly, my understanding of the rainy season.

Wie Thari
www.omahijo.com