PENGARUH VOLUME PENYIRAMAN AIR TERHADAP KANDUNGAN KALSIUM, ZAT BESI, DAN ASAM OKSALAT PADA DAUN BAYAM PETIK (Amaranthus hybridus L.)
Spinach is one type of vegetable that popular in community due to the nutrients and easily cultivated. In some areas of Gunung Kidul, in the dry season, a lot of land not utilized because of the drought. Irrigation program has been done, but there are still limited, so the volume needs water for cro...
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| Main Authors: | , |
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| Format: | Theses and Dissertations NonPeerReviewed |
| Published: |
[Yogyakarta] : Universitas Gadjah Mada
2013
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| Subjects: | |
| Online Access: | https://repository.ugm.ac.id/125305/ http://etd.ugm.ac.id/index.php?mod=penelitian_detail&sub=PenelitianDetail&act=view&typ=html&buku_id=65472 |
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| Institution: | Universitas Gadjah Mada |
| Summary: | Spinach is one type of vegetable that popular in community due to the nutrients
and easily cultivated. In some areas of Gunung Kidul, in the dry season, a lot of
land not utilized because of the drought. Irrigation program has been done, but
there are still limited, so the volume needs water for crop cultivation, especially
spinach, need to be taken into account. This study aimed to determine the effect of
the volume of irrigation water nutrient content of spinach quotes. This study uses
a completely randomized design with five treatments that watering is done once
in 4 days with volume 20 % (0.25 L), 40 % (0.5 L), 60 % (0.75 L), 80 % (1 L) and
100 % (1.25 L) of field capacity. Each treatment was repeated 5 times. Spinach
seeds have been sown in 3 weeks, and planted in polybags containing a mixture of
ground limestone and dung as fertilizer with a ratio of 1:1 weight 7.5 kg. Plants
were allowed to grow until the age of 45 days (of the harvest). After harvesting,
samples of leaves and stalks of spinach tested mineral content of calcium (Ca) and
iron (Fe) were prepared by the desdructive acid and measured by atomic
absorption spectrophotometry method. In addition, the spinach was also measured
oxalic acid content, as antinutrient substances measured by titration. The data
were then statistically tested by ANOVA and DMRT to show significant
difference between samples. From this get a result base on statistic (p<0.05)
respectively. The results shown for calcium content (mg/100 g) with volume of
100 % and 20 % is 444.18 and 209.73. For iron content (mg/100 g) with volume
20 % and 100 % is 4.59 and 1.59. For oxalic acid content with volume 20 % and
100 % is 0.77% and 0.38%. For water content is with volume 100 % and 20 % is
85, 84% and 83.74%. Thus, irrigation by 60 % volume of water provide a more
efficient, especially for ground limestone in dry areas. |
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