This study aims to analyze the profitability, factors that affect production and production efficiency of cassava farming. The research is conducted by survey method in Natar District of South Lampung Regency from June to August 2017. The 56 research samples are obtained by simple random sampling method. Primary data is obtained from direct questionnaires interview with cassava farmers and secondary data obtained from several related institutions. Data is analyzed qualitatively and quantitatively by income analysis and production function of Cobb Douglas. The results showed that cassava farming in Natar District of South Lampung Regency was profitable for farmers of Cassesart variety and not profitable for other varieties. Factors affecting cassava farming for respondents of Cassesart variety were land area, urea fertilizer and labor, for respondents of other varieties were land area and labor. Production process was not efficient and in increasing return to scale phase.
Bernas SM, Fitriana M, Wijaya A, Fitri SNA. 2020. Effect of the seedling age and compost to the growth of palm date lulu (Phoenix Dactylifera L.) nursery and investigation of female seedling. Jurnal Lahan Suboptimal : Journal of Suboptimal Lands 9(2): 199-207.Indonesia imported very high amount of date palm fruits about 9.99 million kg or US$ 13.18 M, because of that it is necessary to develop a research about date palm seedling nursery and investigation of female date, since this is a dioecious plant. The aim of this investigation was to find out characteristics of female date seedling and the effects of seedling age and compost on seedling growth. There were 2 steps in this research: the first was application of compost on seedling (without and plus compost treatments) and the age of seedling (15 and 30 days old) for transplanting into polybag, the growth ability of plant was monitored. The second step was transplanting seedling at 30 days old into pan for investigation female date, which 20 seedlings were planted in one pan and replicated 3 times. Results showed that compost increased roots and leaves growth on seedling. Transplanted at 30 days old seedling had the ability to grow about 95% compared to 15 days old was only 45%. It was found that female seedling was about 25% and the rest (75%) was male or sterile. It is needed further investigation on growing female seedling in the field and can it produce fruit.
10 ).The result showed thatthe treatment of chicken manure30 ton ha -1 + 50% of NPK (P 10 ) gave the best result on the growth and yield of cauliflower. It was showed by the height of plant, the number of leaves, the age of flowering, the age of harvest, total fresh weight of plantand commercial fresh weight, diameter of stem and diameter of flowers. All of the value of these parameters was highest.
KEY WORDSCauliflower, rice husk charcoal, chicken manure, oil palm empty fruit bunches.
Penggunaan kacang tunggak sebagai tumbuhan leguminosae dan kompos tandan kosong kelapa sawit untuk menambah kesuburan tanah sudah banyak dilakukan petani. Lahan pertanian di desa Arisan Jaya kecamatan Pemulutan Barat adalah lahan kering podsolik merah kuning yang memiliki ciri-ciri sebagai berikut: miskin unsur hara, kejenuhan Al tinggi, kadar bahan organik rendah dan pH rendah. Penggunaan pupuk anorganik (pupuk kimia) tentunya memerlukan biaya yang besar karena harganya yang mahal dan terus meningkat. Selain dari pada itu pupuk kimia juga dapat menurunkan produktivitas lahan dan menimbulkan masalah lingkungan. Oleh karena itu melalui kegiatan pengabdian kepada masyarakat ini akan diperkenalkan suatu metode untuk meningkatkan kesuburan tanah dan mengurangi penggunaan pupuk anorganik (pupuk kimia) dengan penanaman kacang tunggak (Vigna unguiculata) dari keluarga leguminosae dan penggunaan kompos tandan kosong kelapa sawit sebelum penanaman tanaman pangan lainnya.
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