[EFFECT OF MYCORRHIZAL BIOFERTILIZER AND CHICKEN MANURE ON GROWTH AND YIELD OF COWPEA (Vigna sinensis L.) IN ULTISOL]. This study aims to 1) obtain the interaction of mycorrhizal biofertilizers and chicken manure on cowpea in ultisol and 2) determine the best dose of mycorrhizal biofertilizers for the growth and yield of cowpea plants, also find the best dose of chicken manure on the growth and yield of string beans. The study was conducted in April 2019 at the experimental garden, Integrated Zone of the Faculty of Agriculture, UNIB, Kelurahan Kandang Limun, Muara Bangkahulu District, Bengkulu City. This study used a factorial Randomized Completely Block Design (RCBD) with two factors and three replications. The first factor is the administration of a dose of mycorrhizal biofertilizer, i.e., 0 (without mycorrhizae), 2.5 g/plant, 5 g/plant, and 7.5 g/plant. The second factor is the provision of chicken manure doses of 5 tons/ha, 10 tons/ha, and 15 tons/ha. Each experimental unit consisted of 25 plants with some sample plots of 5 plants. There is an interaction between mycorrhizal fertilizer 5 g / plant with chicken manure 5 tons/ha, which gives the best results on variable weight pod pods equal to 1.55 kg/m2 and pod weight of 15.46 kg/ha. The application of mycorrhizal biological fertilizer at a dose of 5 g/plant has good vegetative growth compared to other mycorrhizal doses. It shows the highest results based on the average number of flowers/plants and the number of pods/plants. Doses of chicken manure up to a dose of 15 tons/ha do not significantly increase growth and yield of cowpea.
[CHANGE IN SOIL CHARATERISTICS AND PERFORMANCE OF UPLAND RICE VARIETIES IN COASTAL AREA AS AMENDED WITH BIOFERTILIZER AND BIOCOMPOST]. Dryland in the coastal area has good potential for the cultivation of upland rice to reach food self-sufficiency and the development of future agriculture. Low fertility of the land the area can be overcome by using appropriate technology such as the use of superior varieties, bio-fertilizers, and bio compost. This study aimeds to (1) determine chemical and biological properties of coastal land to improve the growth of upland rice (2) find out the growth of upland rice in the coastal area using low input technology and (3) obtain upland rice varieties with high adaptability to a coastal area environment. The experimental design used was a split-plot design with the main plot of 3 upland rice varieties, namely Inpago 10, Serantan, and Local Variety, while the subplots are were fertilizer inputs namely [double inoculant P solubilized microbial p (pf) + K solubilized microbially + N fixation microbial N], [double inoculant P solubilized microbial (fma) + K solubilized microbially + N fixation micarobia], [biocompost at a dose of 10 tons/ha], and [inorganic fertilizer recommended by BPTP ie 200 kg Urea/ha, 100 kg SP36/ha, 100 kg KCl/ha]. The results showed that the coastal area has the potential for the development of upland rice cultivation. Also, the double inoculants of biological fertilizers were able to increase plant nutrient uptake, soil biological characteristics, and the growth of upland rice as compared to controls. Specifically, the best treatment is produced by application of [double inoculant microbial solvent p (pf) + microbial solvent K + microbial N fixation] combined with upland rice Inpago variety 10.
This study aims to obtain soybean varieties that are able to grow well and produce high in biocomposite coastal areas. This study was compiled using Randomized Block Design (RAKL) with single factor consisting of four varieties of soybeans namely Wilis, Grobogan, Detam I and Detam II. The results showed that the varieties of Wilis produce the highest plant height 63,13 cm, the highest percentage of pods per plant is 91,12%, the highest number of seeds per plant is 249,56 pieces, the heaviest seed weight per plant is 30,92 gram, while the Grobogan which produce the heaviest dry weight is 7,92 g, the highest K absorption is 0,22 g and the highest 100 seed weight is 18,00 g. Thus, the varieties of Wilis and Grobogan have higher adaptation rates than the Detam 1 and Detam II varieties, which has the potential to be developed in coastal areas.
Soil water availability to the plants is a range of water content between the field capacity and the permanent wilting point (PWP) conditions. The PWP is defined as the lower limit of soil water content that the plant can extract water from the soil as indicated by the symptoms of wilting plants. This is because plant roots are unable to penetrate the soil micropores that contain the water. The study aims to analyze the effects of arbuscular mycorrhizal fungi (AMF) and compost in enhancing soil water absorption by the plant when the water content is close to the permanent wilting point. Four doses of AMF (0, 5, 10 and 15 g.plant-1) and three doses of coffee pulp-made compost (0, 5 and 10 ton.ha-1) were arranged according to a randomized complete block design with three replicates. Results showed that the application of AMF significantly enabled the plant to improve water uptake when the soil water content was about at the permanent wilting point conditions. The AMF addition of 15 g.plant-1 significantly prolonged the growing period of chili to wither and the plant showed the wilting symptoms at the soil water content of 5 to 7% lower than the no-AMF plants. Improved water uptake under water stress conditions was attributed to increases in the root colonization by AMF.
Abstrak: Penggunaan pupuk kimia secara terus menerus dalam jangka panjang akan mncemari lingkungan, sehingga kelestarian sumber daya lahan dan keberlanjutan produksi tidak akan terjaga. Asam humat merupakan salah satu bahan bersifat ramah lingkungan dan mampu meningkatkan kesuburan tanah. Kegiatan PKM ini bertujuan untuk meningkatkan pengetahuan dan ketrampilana masyarakat khususnya kelompok Wanita Tani di Kelurahan Beringin Raya, Kecamatan Muara Bangkahulu, Kota Bengkulu dalam mengaplikasikan asam humat untuk budidaya sayuran yang ramah lingkungan. Metode pelaksanaan kegiatan ini dibagi 3 tahap yaitu: (1) sosialisasi; (2) praktik budidaya tanaman sayur; dan (3) evaluasi. Berdasarkan hasil evaluasi yang dilakukan terlihat bahwa sebelum kegiatan sosialisasi dilakukan terdapat 10 orang (44%) yang hanya mengetahui definisi dan peranan asam humat, namun tidak ada peserta yang mengetahui bagaimana cara menggunakan asam humat. Selanjutnya setelah dilakukannya pemaparan materi sosialisasi, terdapat peningkatan jumlah peserta yang mengetahui defenisi dan peranan asam humat yaitu menjadi 25 orang (100%). Sedangkan peserta yang menyatakan faham cara penggunaan asam humat setelah dilakukan sosialisasi adalah sebanyak 20 orang (80%). Hasil evaluasi akhir kegiatan juga menunjukkan bahwa seluruh peserta tertarik untuk mengadopsi asam humat dalam budidaya sayuran. Abstract: The continuous use of chemical fertilizers in the long term will pollute the environment, so that the sustainability of land resources and the sustainability of production will not be maintained. Humic acid is an environmentally friendly material and can increase soil fertility. This PKM activity aims to increase the knowledge and skills of the community, especially the Women Farmer group in Beringin Raya Village, Muara Bangkahulu District, Bengkulu City in applying humic acid for environmentally friendly vegetable cultivation. The method of implementing this activity is divided into 3 stages, namely: (1) socialization; (2) vegetable cultivation practice; and (3) evaluation. Based on the results of the evaluation conducted, it was seen that before the outreach activities were carried out there were 10 people (44%) who only knew the definition and role of humic acid, but none of the participants knew how to use humic acid. Furthermore, after the presentation of socialization material, there was an increase in the number of participants who knew the definition and role of humic acid, namely to 25 people (100%). While the participants who stated that they understood how to use humic acid after the socialization was carried out were 20 people (80%). The results of the final evaluation of the activity also showed that all participants were interested in adopting humic acid in vegetable cultivation.
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