PRINT ISSN 2285-5718, CD-ROM ISSN 2285-5726, ISSN ONLINE 2286-0126, ISSN-L 2285-5718

Analysis of water balance for determine cropping patterns for food crops in watershed Karangmumus - the province of east Kalimantan

Published in AgroLife Scientific Journal, Volume 3, Number 2
Written by Akas Pinaringan SUJALU, Ismail, Sigit HARDWINARTO, Chandradewana BOER, Sumaryono

The experiment objectives was to determine cropping patterns of food crop in watershed Karangmumus. The geographical position 116 49' EL - 117 08' EL dan 0 34' SL - 0 45' SL, with extent of the 644.2 km2 whereas covers 8 village or 38.58% of total Samarinda City. Have the Area Class III (1500 – 2000 mm/ year, with the Bimodel or Double Wave rainfall models with C patern. The hight rainfall depth periode at December and April, therefore the low rainfall depth at September and November. Have a value Q=± 9.9%, or rainfall tipe A (very wet area with tropical wet vegetation) and E1 agroclimtic zone. Modified method of Thornthwaite and Mather of bookkeeping system of water balance was used based on monthly data. Water Balance monthly indicated that this area have potential growing season about 9 months, have to water surplus 7 month (478.8 mm year-1) and water deficits about 4 months (44.5 mm/year). In these area rice could be planted twice a year without irrigation. Futher for non-irrigation land with monthly high rainfall, the result showed that the area had potency of growing periods of 182 days through the year. Planting dates might be started from October 1 until December 1, with sequence of rice-rice or rice-rice-other food crops

[Read full article] [Citation]

The publisher is not responsible for the opinions published in the Volume. They represent the authors’ point of view.

© 2019 AgroLife Scientific Journal. All Rights Reserved. To be cited: AgroLife Scientific Journal.

Powered by INTELIDEV