This research aimed to understand response of growth and rice productivity to the utilization of superior rice varieties and the application of biosilica fertilizer on rainfed land at different planting season. The study employed split plot design with three superior varieties of rice as main plot treatment and biosilica application as sub-plot. The growth and rice productivity were observed during dry season and rainy season. The utilization of superior rice varieties was only affected on number of total grains, 1000 grains weight and productivity at dry season meanwhile it affected the variables observed at rainy season. Application of biosilica fertilizer did not affect plant height, number of empty and total grains at dry season meanwhile it affected the variables observed at rainy season. Rice productivities were significantly different in both factors. Result showed that most of variables values obtained with biosilica application were higher. Biosilica fertilizer was able to increase productivity up to 1.08 tons/ha from 6.48 tons/ha to 7.56 tons/ha at dry season and up to 1.92 tons/ha from 8.7 tons/ha to 10.62 ton/ha at rainy season. This result indicated that utilization of superior rice varieties and biosilica fertilizer is recommended to increase rice productivity on rainfed land.

The impact of climate change is the biggest challenge for the agricultural sector, especially the food crops sub-sector. The research was conducted in Jembrana Bali. The aim was to obtain new high yielding varieties of rice and location-specific adaptive planting methods. The research time April - August 2021. Used a factorial randomized block design. The first factor consists of the type of variety (V) and the second factor is the method of planting (T). The type of variety (V) consists of 3 levels, namely V1=Bioni 63; V2= Inpari 32; and V3 = Inpari 30, while the method of planting (T) consists of 2 levels, namely T1 = direct seed planting, and T2 = transplanting. Data were analyzed using analysis of variance and further test with LSD 5%. The results showed that the treatment of varieties and planting methods had no significant effect on the diversity of carnivorous arthropods. Four types of carnivorous arthropods were found, namely odonata, araneae, coccinellidae, and paederinae with a low species diversity index of 0.4985; 0.5210; 0.5172; 0.4976; 0.5205, and 0.5057 in V1T1; V1T2; V2T1; V2T2; V3T1, and V3T2. Dominant herbivorous arthropods were Scirpophaga incertulas Walker, Cnaphalocrocis medinalis, Nilaparvata lugens Stal, and Leptocorisa oratorius. The highest yield was shown in V1T2 at 9.44 tons/ha. It was concluded that the new high yielding varieties of rice and location-specific adaptive planting methods were Bioni 63 Agritan transplanting. The use of the new high-yielding variety Bioni 63 Agritan also contributed to the reduction in the use of chemical pesticides, with data supporting low yellow rice stem borer attack.The relationship between research results and sustainable agriculture is supports sustainable agriculture.

There had been a 2.145 ha fields transition in Bali which had a major impact on the loss of food production. However, there was raise in the population annually, therefore it disrupts local food security. Effort to raise the effectiveness and agricultural productivity areas through changing cropping system from monoculture to intercropping. This study aimed to find out the growth responses of maize and soybean crops cultivated by monoculture and intercropping planting systems and its carrying capacity for cattle feed. The study was arranged using a randomized block design with 3 treatments and 3 replications, namely: T1: Bima 20 URI VUB maize seeds in monoculture (40cm x 20cm x 80cm; 1 seed/hole or 70cm x 40cm x 100cm; 2 seeds/hole); T2: Anjasmoro, Deja 2 and Devon soybean VUB seeds in monoculture system (40cm x 20cm; 2-3 seeds/hole); T3: maize-soybean intercropping; Maize (2 rows; 40cm x 12.5; 2 seeds/hole); Soybeans (4 rows; 30cm x 10cm; 2-3 seeds/hole); both distance: 40cm. Data collected were growth performance, yield components and yield capacity of both maize and soybean crops also competition and profit value of maize and soybeans crops cultivated by intercropping planting system. The results showed that monoculture maize crops cultivated by monoculture planting system were better than it intercropped with soybean crops in terms of growth parameters. However, intercropping maize and soybean were produced greater yield components on cobs number, cobs and grains weight than monoculture (P<0.05), except grains weight per cobs. The monoculture soybean plant in growth, components and yield parameters were greater than intercropping (P>0.05). The ATER, LER, RCC, CR, and AYL values were 3.24; 1.28; -2.69; 4.58; -0.098 on maize and 2.52; 0.84; 1.82; 0.21; -0.158 on soybean. Those result was followed by carrying capacity in intercropping system by 30% usage can be used for 1.804 AU meanwhile 40% usage was sufficient for 1.353 AU. Intercropping system can be recommended to farmers to increase growth responses of maize-soybean and its potential carrying capacity for cattle feed.

Research aimed to understand the agronomy performance, rice productivity, financial feasibility and increasing of farmer’s income through program of Integrated Crops Management (ICM) assistance. Research was conducted at Tabanan Regency in 2016. Research utilized Inpari 40, Inpari 30, Inpari 16, Inpari 20, Inpari 24, Inpari 28 and Ciherang as superior rice varieties and involved 38 of farmers respondent in participating. Data of agronomy component was observed and analyzed by ANOVA. Economic feasibility of rice field farming was analyzed by using the analysis of income and R/C Ratio. Result showed that the agronomy performance of superior rice varieties cultivated with ICM technology were tend to equal to each other. Utilization of superior rice varieties with ICM technology implementation can increase rice productivity up to 1.80 ton/ha compared to farmer’s habits mainly the habit of Ciherang uses. Generally, rice field farming by ICM applications has financial feasibility supported by increasing of income average was IDR 5.640.831/ha and R/C ratio became 2.43. Implementation of ICM technology able to increase rice productivity and farmer’s income to support sustainable agriculture in Bali Province. ICM technology requires to disseminate to the farmers through assistance programs by government related that can be adopted well by farmers.