The research has been conducted to determine the effect of potato waste compost + cattle rumen to increase soil fertility and the product of several vegetable kinds. The research location was in Desa Candikuning, Bedugul, Bali with altitude was 1,247 m above the sea level. The climate types including B3 with 7-8 months on wet and 4 -5 months on dry. The research was conducted from May to October 2014 using a Randomized Block Design of nested pattern factorial. The treatment was attempted was potato waste compost + cattle rumen towards several kinds of vegetables, each treatment was replicated three times. The research results of nutrient consist of potato waste compost + cattle rumen showed C-organic was 6.940% N-Total, 0.310% P-provided, 23.69 ppm and 0.340% K-Total. The application of potato waste compost + cattle rumen increased a soil of C-organic from 1.840% to be 3.75%, N-Total of soil increased from 0.159 to be 0.260%, P-Provided of increasing soil from 437.180 ppm to be 2900 ppm and K-Total of increasing soil from 0.04% to be 0.08%. the treatment of potato waste compost + cattle rumen showed the significance increasing for five kinds of vegetables were attempted. Four vegetable types crops were attempted, namely lettuce, green vegetables, phak choy, and spinach unplug showed a variety improvement, it was a very real and not real. However, on Kaylan, potato waste composting + cattle rumen was no significant effect.

Research on the provision of Good plant nutrition at various ages of seeds using hydroponics NFT systems on the yield of red lettuce plants. This research is conducted in the experimental garden of the Faculty of Science and Technology, Tabanan University from October 2019 to December 2019. This research used a randomized block design (RBD). The experimental treatments consisted of 2 factors, namely the dose of Good plant nutrition and the age of the seeds. The first factor is the provision of a dose of Good plant (N) nutrition consisting of N1 = 800 ppm; N2 = 1000 ppm; N3 = 1200 ppm, and the second factor is the age of the seedlings (U) consisting of U1 = age 10 days after seeding (hss); U2 = Age 15 days after seeding (HSS), each treatment was repeated four times      The interaction between Good plant nutrient dose treatment and seedling age (N x U) had a very significant effect (P <0.01) on all observed parameters. The highest oven-dry weight of economic yields is achieved by the treatment of the Good plant nutrient dose of 1000 ppm at the age of 15 hss (N2U2) seeds, namely 5.24 g, an increase of 57.33% from the lowest weight achieved by the treatment of 1200 ppm Good plant nutritional dose at 10 hss (N3U1) ) namely 3.33 g.

Ground kale (Ipomoea Reptans Poir) is one of the agricultural commodities that can be traded at a relatively expensive price. Spinach plants that are relatively resistant to drought andhave a broad adaptability to varius growing environmental conditions, estimated at 2-3 times per year so that the cash flow of the vegetable business will be faster. An incease in demand with demands for better quality vegetable commodities, as well as more guaranteed survival. The estimated annual vegetable demand rate of 8% is good for consumption in the contry, import substitution and in increasing export opportunities. Regulating plant density to a certain extent, the plants can utilize the growing environment efficiently, and the inorganic fertilizer becauseit has a Nitrogen (N) content of 46%. Where nitrogen is a major component of varius important substances in plant. About 40% of the protoplasm content consists of nitrogen compounds used by plants to form amino acid  compounds that are comperted into proteins, chlorophyll,nucleic acids and enzymes.This study was conducted to determine the effect of spacing and dose of N as well as its intrinsic growth and yield of ground water spinach plants,and was carried out in the Subak Tungkub Mengwi region, Mengwi Village, Mengwi District, Badung Regency, with a height of ± 400 m above sea level. The study began from December 8, 2020 until Januari 5, 2021 for 28 days from planting seeds to harvest. This study uses a randomized blok design (RBD) consisting of two factor. The first factor is plant spacing (J) and the second factor is the dose of Urea (U), each treatment is repeated three times.The economical oven dry weight of plants at the distance of plant spacing with the average oven dry weight of economic clump-1 was 5,25 g, with the highest value indicated in the treatment (J1) was 5,34 g while the highest value of Urea dose was shown at dose (U2) of 7,74 g increasing 23,84% compared to the oven dry weight of the lowest clump-1 economy of 6,25 g

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The low yield of cabbage is often associated with the low content of soil organic matter. The inappropriate planting distance also contributes to the low yield of the cabbage plant. The provision of organic fertilizer with the right dosage and setting the right spacing is also expected to increase soil fertility and ultimately increase results of cabbage plants.   This research was conducted in the field from April to July 2018 in Subak Gede Bungan Kapal, Tunjuk Village, Tabanan District, Tabanan Regency. Treatment was arranged in a factorial manner in a Randomized Block Design (RBD). Two treatments studied in this study were plant spacing (30 cm x 40 cm; 30 cm x 40 cm; 30 x 50 cm) and organic fertilizer (Petroganic) (0 t ha-1; 1 t ha-1; 2 t ha -1; 3 t ha-1). The treatment was repeated three times.   The results showed that the interaction between the treatment of spacing and the use of doses of organic fertilizer had no significant effect on all observed parameters.   The treatment of spacing has a significant effect on the diameter of the commercial crop -1, the weight of fresh stover ha-1, and has a very significant effect on the weight of crop ha-1, and the weight of commercial crop ha-1. The highest weight of commercial k-ha ha-1 was obtained at a plant spacing of 30 x 50 cm (J3) of 525.86 kg, significantly increasing by 74.80% compared to a spacing of 30 x 30 cm (J1) which was 299.12 kg.  The treatment of organic fertilizer dosage has a very significant effect on the weight of crop ha-1, weight of commercial crop ha-1, commercial crop diameter-1 but has no significant effect on the fresh weight of stover ha-1. The highest weight of commercial ha-1krop obtained at the dose of organic fertilizer 2 t ha-1 of 444.23 kg (P2) increased by 58.30% compared to the dose of 0 t ha-1 (P0) of 280.62 kg