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SKRIPSI PENGARUH UMUR BIBIT DAN DOSIS PUPUK UREA TERHADAP HASIL TANAMAN SELADA (Lactuca sativia, L.)
ABSTRACT
A reseach about the effect of age of seedling and dose of urea fertilizer on the yield lettuce (Lactuca sativa, L.) had been carried out since October 135 2000 until January 5'? 2001 at Green house, Faculty of Agriculture, University of Tidar Magelang, Potrobangsan Village, North Magelang District, Magelang Regency. The soil type is latosol with pH 6,5 and altitude is 376 meters.
The method uses factorial experiment (3 x 3) in completely randomized design with five replications. The first factor is the age of seedling : 14, 21 and 28 day. The second factor i s dose of urea : 150 , 2 0 0 and 250 kg/ha.
The results of reseach show that the age of seedling on 28 day gives the better effect on height of plant, number of leaves per plant, length of longest leaves, fresh weight of edible part, dry weight of edible part, fresh weight of roots and dry weight of roots .
Increasing dose of urea until 250 kg/ha still shows increase on height of plant, number-of leaves per plant, length of longest leaves, fresh weight of edible pa rt, dry weight of edible part, fresh weight of roots and dry weight of ro ots. The combination of treatment between the age of seedling and dose of urea fertili zer have the same respon ses on all observed parameters.
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