Tuber Diameter Research Articles

STUDY OF THE COMPOSITION OF PLANTING MEDIA AND ZA FERTILIZER ON THE GROWTH AND PRODUCTION OF SAMOSIR SHALLOTS USING PVC PIPES

The research was joined by Suka Raya Village, Rampah Dua Village, Pancur Batu and Deli Serdang Districts. Research launches in July 2021 and ends in November 2021. Research objective is used for ingredient resource volume as well as the development of ZA, thereby increasing Samosir's productivity and productivity. The experimental design used in this study was a factorial randomized block design with 2 factors: the first factor, namely, the composition of the planting medium with 3 treatment levels: 100% topsoil, 75% top soil: 25% cocopeat, 50 top soil soil. %: cocopeat 50%. The second factor is ZA fertilizer with 3 treatment levels: 0 g/planting hole, 1g/planting hole, and 2 g/planting hole. Parameters observed were plant length (cm), number of leaves (strands), number of tubers, tuber diameter (mm), tuber fresh weight per plant (g), tuber dry weight per plant (g), quercetin analysis (ppm). The outcomes showed that the treatment of ZA manure with a portion of 2 g/establishing opening on plant length boundaries brought about the best plant length, tuber diameter, fresh weight and dry weight of Samosir shallots, while a dose of 1 g/planting hole could increase the number of tubers and quercetin compared to the dose of 1 g/planting hole. other. The composition of the growing media, namely top soil and cocopeat, showed an increase in the growth and quality of Samosir shallots on the number of leaves and quercetin parameters. The communication between the treatment of the sythesis of the developing media and the utilization of ZA manure didn't expand the development and nature of Samosir shallots on totally noticed factors.

Farklı Yetiştirme Ortamları ve Hümik Asit Dozlarının Turpta Bitki Gelişimi ve Kalite Üzerine Etkileri

This research was conducted to determine the effects of different growing media and humic acid doses on plant growth parameters and quality properties in cherry-red radish. In the study, 4 different growing media [Soil, Peat:Perlite (1:1), Peat:Perlite (2:1) and Peat:Perlite (3:1)] consisting of soil and mixtures of peat and perlite at different ratios were used. In addition to, 0 (control), 500, 1000 and 2000 ppm doses of humic acid in liquid form named TKİ Hümas were investigated. Rolex F1 cherry-red radish variety (Raphanus sativus L. var. sativus) was used in the study. According to the findings obtained from the research, it was detected that Peat:Perlite (2:1) medium came to the forefront in terms of plant growth parameters and quality properties among the growing media. It was found that humic acid applications (500, 1000 and 2000 ppm) significantly increased tuber fresh weight, tuber diameter and tuber length compared to the control (0 ppm). Among the humic acid doses, the highest tuber fresh weight, tuber diameter and tuber length were obtained from 1000 ppm dose. In general, it was determined that soilless growing media and humic acid had positive effects on plant growth and quality. When the growing media and humic acid doses are evaluated among themselves, it was concluded that especially Peat:Perlite (2:1) medium and 1000 ppm dose were more effective on plant growth and quality and could be used successfully in soilless cherry-red radish cultivation in terms of agricultural sustainability and productivity.

CHARACTERISTICS OF SHALLOTS (Allium ascalonicum L) INFLUENCED BY SULFUR APPLICATION IN FLOATING CULTIVATION.

Floating agricultural cultivation presents a viable solution for cultivating in water-rich regions. Among the crops suitable for this system is shallot (Allium ascalonicum L.). This study aimed to assess the effectiveness of sulfur application on shallot plant characteristics (Allium ascalonicum L.) in floating cultivation. Conducted in May 2023 at the Faculty of Agriculture's research pond, Sriwijaya University, the research employed a completely randomized design with sulfur applications (S1: 0 kg ha-1, S2: 30 kg ha-1, S3: 60 kg ha-1, S4: 120 kg ha-1, S5: 240 kg ha-1). Results revealed that tuber diameter exhibited strong determination values (R2: 75%), leaf length, number of leaves, and number of tillers exhibited moderate determination values (R2: 51%, 57% and 56%, respectively), while the relative growth rate showed a weak determination value (R2: 40%). The 60 kg ha-1 sulfur treatment demonstrated the highest chlorophyll content.

Genetic diversity and stability analysis of sweet potato accessions of north-eastern India grown under the mid-hill conditions of Meghalaya

AbstractA total of 32 sweet potato genotypes were evaluated to assess the genetic diversity based on quantitative traits and molecular markers, as well as stability for yield and related traits. Wider variability was observed for the traits like vine length (181.2–501.3 cm), number of leaves/plant (103.0–414.0 cm), internodal length (3.20–14.80 cm), petiole length (6.5–21.3 cm), leaf length (8.50–14.5 cm), leaf breadth (8.20–15.30 cm), leaf area (42.50–115.62 cm2), tuber length (7.77–18.07 cm), tuber diameter (2.67–6.90 cm), tuber weight (65.60–192.09 g), tuber yield (7.77–28.87 t ha−1), dry matter (27.34–36.41%), total sugar (4.50–5.70%) and starch (18.50–29.92%) content. Desirable traits such as tuber yield, dry matter and starch content have shown high heritability (>60%) with moderate to high genetic advance. Under molecular analysis, a total of 232 alleles were observed from all 32 microsatellite markers, which ranged from 4 to 14 with an average of 7.77 alleles per locus. In the population, the average observed heterozygosity (0.51) was higher than the expected heterozygosity (0.49). The contribution of genotype, genotype by environment interaction to the total variations was found to be significant. Based on the multi-trait stability index (tuber length, tuber diameter, tuber weight and tuber yield), genotypes X-24, MLSPC-3, MLSPC-5, ARSPC-1 and TSP-12-12 were found to be most stable. Among them, the high-yielding and stable genotypes TSP-12-10 (26.0 t ha−1) and MLSPC-3 (23.9 t ha−1) can be promoted for commercial production or used as parental material in future crop improvement programmes.

The Response of Shallot (Allium ascalonicum) to Salinity Stress

Shallot (Allium ascalonicum) cv Bima Brebes is the cultivar that was most widely cultivated in shallot production centers on Java Island. The increasing rate of land use conversion from agricultural to non-agricultural land caused the shallot cultivation to be directed to marginal lands, including land with high salinity. This study aimed to determine the effect of the salinity level on the growth and yield of shallots and to determine the highest level of salinity that can be tolerated by shallots. This experiment was carried out from October to December 2022 at the Experimental Station of Swadaya Gunung Jati University. The location is located in Cirebon City, West Java, Indonesia. The research method used was the experimental method with a completely randomized design (CRD). The treatment was salt concentration consisted of 5 levels i.e., 0 ppm, 1250 ppm, 2500 ppm, 3750 ppm, and 5000 ppm. Each treatment was repeated 5 times so that there were 25 experimental units. Each experimental unit consisted of 10 polybags of shallot plants. The results showed that salt concentration significantly inhibits the growth and yield of shallot at all of the measured parameters i.e., plant height, number of leaves, root length, root volume, plant dry weight, plant growth rate, number of tubers, tuber diameter, fresh tuber weight, and dry tuber weight. The salt concentration of 1250 ppm is the tolerance limit for salinity stress for shallots.

Uji Kualitas Pupuk Organik Cair Kotoran Sapi dengan Beberapa Bioaktivator Terhadap Pertumbuhan dan Hasil Tanaman Bawang Merah (Allium Ascalonicum L.)

This study aims to improve the quality of cow manure liquid organic fertilizer from several bioactivators and to determine the effect of liquid organic fertilizer on the growth and yield of shallot (Allium ascalonicum L.) plants. This research was conducted on March 11 2022 – November 29 2022 at the cultivation land of Lamongan Regency. The research was arranged using Factorial RBD consisting of two levels and three replications. The first level is the types of bioactivators which consist of 5 types, namely without bioactivators (B0), Em4 (B1), BRE4 (B2), PAZ's (B3), and Mol rumen (B4). The second level is the concentration of liquid organic fertilizer to be tested on plants which consists of 4 concentrations of only basic fertilizer (K0), 20 ml/liter (K1), 40 ml/liter (K2), and 60 ml/liter (K3). Research data can be analyzed by ANOVA followed by Duncan's Multiple Range test at 5% level. The experimental results showed that a single treatment with the type of bioactivator helped improve the quality of liquid organic fertilizer for cow dung because the total N and pH parameters met the quality of the Minister of Agriculture. Single treatment concentration of cow manure liquid organic fertilizer showed a highly significant different effect on the variables observed in plant height, number of leaves, root volume, tuber diameter, and tuber dry weight. The variable number of tubers showed significantly different results in a single treatment, the concentration of cow dung liquid organic fertilizer and the fresh weight of tubers showed no significant differences. The best concentration of liquid organic fertilizer for cow dung was 60 ml/liter with the highest value at plant height 15.81 cm, number of leaves 10-11 leaves, root volume 10.96 ml, tuber diameter 1.86 cm, tuber number 38-38 tubers/plot, and tuber dry weight 17.89 grams. A significant correlation was also shown between fresh weight and tuber diameter because the value of r count 0.5237 was greater than r table 0.2144.

Pengaruh Media Tanam dan Varietas Terhadap Pertumbuhan dan Hasil Tanaman Jahe (Zingiber officinale R)

The purpose of this research is to find out how the growth and yield of ginger are affected by the growing media and varieties, and how they interact with each other. This research was conducted at the Gayo Lues Laboratory and PSDKU at the University of Syiah Kuala Gayo Lues. The design used in this study was a 4 x 2 Factorial Randomized Block Design with 3 replications, so there were 8 treatment combinations and 24 experimental units with a total of 72 plants. Plant height, number of tillers per clump, main stem diameter, fresh chestnut weight, tuber weight, tuber diameter, and dry chestnut weight were the parameters observed. The results of this study indicated that the media and variety treatment had a very significant effect on plant height at 120 HSPT. Stem diameter and fresh chestnut weight were significantly affected by the varietal treatment, as well as plant height and tuber weight, but not by other parameters. In ginger growth and yield, there was no significant interaction between growing media and varieties. The treatment of citronella waste and coffee peel waste planting media with red ginger varieties produced the best plant growth.

Effects of enhancing sweet potatoes variety diversity in increasing yield and quality of tuber

Sweet potato is a tuber crop which is grown for both its tubers and vines. The tubers are used as human food while the vines are used as livestock feed. It is a crop that is able to resist drought conditions and will take a short time to mature hence plays a big role in food security in Kenya. There are many different varieties of sweet potatoes in the world and in Kenya which differ in growth and yield characteristics. Since most of the population in Embu West Sub County is made up of small scale farmers who undertake farming as an economic activity, it is necessary for them to adopt the variety that produces the highest yield. A study was carried out to determine effects of enhancing suit potatoes variety diversity in increasing yield and quality of tuber of SPK004, Kenspot 3 and Kenspot 4.Data on specific growth and yield parameters was collected in two seasons , summarized using excel then analysed using SPSS version 23, α=0.05. The study showed significant growth and yield potential difference in all yield parameters among the three sweet potato varieties with Kenspot 4 being the highest producer of and biomass above the ground and widest tuber diameter.

Dampak Pupuk Organik Cair dan Kompos IPAL Karet Terhadap Pertumbuhan Bibit Kelapa Sawit (Elaeis Guineensis Jacq) di Main Nursery

Oil palm plants (Elaeis guineensis Jacq) are one of the important commodities in the plantation crop industry, capable of providing economic value as a source of foreign exchange income for the country. The increase in oil palm area is also accompanied by an increase in damaged plants (TR/TTM). So it is necessary to rejuvenate the plants to get quality seeds. The aim of this research was to determine the effect and best dose of Eco Farming liquid organic fertilizer treatment with rubber wastewater treatment plant sludge compost on the growth of oil palm (Elaeis guineensis Jacq.) seedlings in the main nursery. This research was carried out at the Teaching and Research Farm, Faculty of Agriculture, Jambi University and lasted for 3 months, starting in September-November 2022. This research used a Completely Randomized Design (CRD) with 5 treatments, namely: k0 = 40 mL.L-1 Eco fertilizer water Farming, k1 = 30 mL.L-1 Eco Farming fertilizer water + 100 g compost from waste sludge from WWTP, k2 = 20 mL.L-1 water from Eco Farming fertilizer + 200 g compost from waste sludge from WWTP, k3 = 10 mL.L-1 Eco Farming fertilizer water + 300 g of WWTP sludge waste compost, k4 = 400 g of WWTP sludge waste compost. The variables observed included seed height (cm), increase in tuber diameter (mm), increase in number of leaves (strands), shoot dry weight (g), root dry weight (g), ratio of root shoot and root volume (ml). The results of the research showed that the application of Eco Farming liquid organic fertilizer and waste compost from rubber wastewater treatment plant sludge was able to increase growth in the variables of seed height, root dry weight and root volume. However, it has not been able to increase the increase in tuber diameter, increase in number of leaves, shoot dry weight and root shoot ratio. Treatment of 10 mL.L-1 of Eco Farming fertilizer water + 300 g of IPAL waste sludge compost gave the best average growth of 6 month old oil palm seedlings in the main nursery.

Amino acid-based biostimulant improves the productivity of Radish (Raphanus sativus L.) under saline stress


 The radish culture is highly sensitive to salinity. The use of an amino acid-based biostimulant can, therefore, be an attenuator of the deleterious effect of salinity on the radish crop. The aim was to evaluate the effectiveness of a biostimulant based on amino acids and freshwater algae extract on radish (Raphanus sativus L.) cultivated under irrigation conditions with saline water. The experiment was carried out in a greenhouse. The saline levels evaluated were 0.15, 1.8, and 2.8 dS.m-1 and four doses of biostimulant were applied (0, 2, 4, and 6 mL/L). The statistical design was completely randomized, in a 4x3 factorial scheme with 4 replications. Biometric and biomass analyses, sodium and potassium contents, and soluble solids were performed. Was observed that plants submitted to high salinity levels (2.8 dS m-1) with application of 6mL/L of the biostimulant showed high values in height (12.2 cm), stem (5mm) and tuber (6mm) diameter, leaf area (50cm2), fresh and dry mass of aerial part (3.5 g) and underground system (5.8 g). The application of the biostimulant 6 mL/L, at the salinity level of 2.8 dS.m-1, favored the increase of saline ions in the tuber of the plants. The application the biostimulant provided a higher content of soluble solids. Applications of the biostimulant in plants with saline stress showed beneficial responses in the performance of the radish, therefore the dose of 6 mL/L is recommended for a satisfactory response of the performance of the radish in saline conditions.

The Effect of Vermicompost Fertilizer and Effective Microorganisms (EM4) on The Growth and Yield of Shallots (Allium ascalonicum L) Bima Brebes Cultivars

This study aims to determine the effect of vermicompost fertilizer dose interaction and effective microorganisms (EM4) on the growth and yield of onion plants (Allium ascalonicum L.) cultivar Bima Brebes. The research was carried out in Karangwangun Village, Babakan District, Cirebon Regency – West Java, from February to May 2023. The design used is an experimental method with a factorial pattern Group Random Design (RAK), consisting of two factors, namely vermicompost fertilizer and effective microorganisms (EM4). Application of vermicompost fertilizer (K), which consists of 3 levels, namely: K1 = 5 tons / ha, K2 = 10 tons / ha, and K3 = 15 tons / ha; Effective Microorganism Factor (EM4) (E) which consists of 3 levels, namely: E1 = EM4 5 cc / Liter of water, E2 = EM4 10 cc / Liter of water, and E3 = EM4 15 cc / Liter of water. Each treatment or experimental unit was repeated three times for a total of 27 plots. Data analysis was carried out using fingerprints and follow-up tests with the Duncan Multiple Distance Test at the level of 5%. The variables observed were plant height (cm), number of leaves per clump (strands), number of saplings per clump (fruit), tuber diameter (cm), weight of fresh tubers per clump, weight of fresh tubers per plot, weight of dry tubers per clump and per plot. The results showed that: (1) there was no interaction between vermicompost fertilizer application and effective microorganisms (EM4) on all observation parameters, (2) The independent effect of vermicompost fertilizer application had a significant effect on the average variable weight of fresh tubers per plot. Meanwhile, the treatment of effective microorganisms (EM4) has an independent effect on the average plant height variable aged 21 days after planting (HST).

Effect of application liquid organic fertilizer Bio3 with some concentrations to carrot (Daucus carota L.) yield

Bio3 Liquid Organic Fertilizer is a liquid organic fertilizer made from fermented fruit waste with local activator JB3. This fertilizer was tested on carrot plants to determine the effect of giving several concentrations of POC Bio3 on carrot yields. The research was conducted in July-November 2022 in Tobu Village, South Central Timor District, East Nusa Tenggara Province, Indonesia. This study used a single factor randomized block design (RBD) consisting of 9 concentrations of liquid organic fertilizer (LOF) Bio3 (0, 5, 10, 15, 20, 25, 30, 35, 40 ml/L water) and 3 replications. The parameters studied were tuber diameter, tuber length, tuber wet weight per plot. The results obtained were that the application of Bio3 liquid organic fertilizer to carrot plants had a significant effect on tuber diameter (3.30 cm), tuber length (16.22 cm), tuber weight per plant (84.61 g) and tuber weight per plot (4,230 kg). Based on effectiveness, efficiency and results that are not significantly different, a concentration of 25 ml/L of liquid organic fertilizer Bio3 is the best concentration.

Response of Growth and Production of Shallots (Alium cepa L.) to Planting Spacing and Watering Time Eco Enzyme

ABSTRACT
 This research was conducted at the Experimental Field of the Faculty of Agriculture, Universitas Methodist Indonesia, Harmonika Baru Street, Medan Selayang District, with an altitude of ± 27 meters above sea level. This research was conducted from February to May 2022. The aim of this study was to determine the effect of spacing and timing of Eco Enzyme watering on the growth and production of shallots (Allium cepa L.). This study used a randomized block design (RBD) using 2 treatment factors. The first factor is the spacing consisting of 3 levels, namely: J1 = 15cm x 15cm, J2 = 20cm x 15cm, J3 = 25cm x 15cm. The second factor is Eco Enzyme Watering Time consisting of 3 levels, namely: W1 = 1x1 day, W2 = 1x2 days, W3 = 1x3 days. The results showed that plant spacing had a significant effect on sprouting age, root length, tuber diameter/sample, and tuber/sample dry weight. From the treatment results it was found that J2 and J3 had the fastest germination age (2.37 days) when compared to treatment J1 (2.67 days), the highest root length was in treatment J3 (14.92 cm) and the lowest was in treatment J1 (13.22 cm), the largest tuber diameter / sample was in treatment J3 (20.38 mm) and the lowest was in treatment J1 (18.11 mm) and The highest tuber dry weight / sample was in treatment J3 (66.68 g) and the lowest was in treatment J1 (52.06 g).
 Keywords: planting spacing, eco enzyme, shallots.

Efektivitas Tiga Sumber Mikro Organisme Lokal (MOL) Terhadap Intensitas Serangan Penyakit Moler pada Bawang Merah (Allium ascalonicum L.)

This research aims to determine the effectiveness of three sources of Local Micro Organisms (MOL) on the intensity of moler disease attacks on shallot plants in peatlands. This study used a one-factor Completely Randomized Design (CRD) method consisting of 4 treatments and 5 replications, namely t0 = without administration of MOL (control), t1 = MOL of 10% leri water, t2 = MOL of leri water + 10% banana stem and t3 = MOL of water + 10% fish waste. The results of observations of the incubation period for moler disease for the first symptoms to appear were 14 days after inoculation (HSI). The percentage of moler disease is not influenced by the source of MOL. The highest percentage was shown in shallot plants that were not applied with MOL (71.43%). Meanwhile, the lowest percentage was found in shallot plants which were applied with MOL sources from water mixed with fish waste. This treatment also produced the highest number of tubers, namely 130,000 tubers/ha (356.11 kg/ha). Meanwhile, the largest tuber diameter was produced by plants that were applied with MOL leri water combined with banana stems.

The effect of varieties of true shallot seed and paclobutrazol concentrations on growth and production of shallot plant

The increasing demand for shallots is inversely proportional to the quality of the current production. Efforts to improve and increase quality of production are selection of good varieties and add plant regulatory substances has also become the focus of many researchers in their effect on plant growth. Therefore, research was carried out on the effect of the varieties and also plant regulatory substances namely paclobutrazol on the growth and production of shallot plants. This research was carried out at the Teaching Farm, Faculty of Agriculture, Hasanuddin University from August to November 2021. This research was carried out as a factorial experiment in a split plot design, as the main plot, namely the botanical seed varieties of shallot (v) consists of 3 varieties, namely the Lokananta varieties (v1), Maserati varieties (v2), and Sanren varieties (v3), as a sub-plot, namely the concentration of paclobutrazol consists of 4 levels, namely 0 ppm (k0), 100 ppm (k1), 200 ppm (k2) and 300 ppm (k3). The research results showed that the interaction of the Sanren varieties with paclobutrazol concentration of 100 ppm gave the best results on the weight of fresh stover per plant (26.04 g), weight of dry stover per plant (19.23 g) and production per hectare (9.20 ton/ha). The Sanren varieties gave the best results on chlorophyll a (387.23 μmol.m−2), chlorophyll b (187.12 μmol.m−2), total chlorophyll (564.14 μmol.m−2) and number of tubers (1.81). Paclobutrazol concentration of 100 ppm gave the best results on plant height (43.07 cm) and number of leaves (6.24 strands), while paclobutrazol concentration of 200 ppm gave the best results on tuber diameter (23.13 mm) and paclobutrazol concentration of 300 ppm gave the best results on the number of tubers (1.54).

Genotype-by-environment interactions (GEIs) and evaluate superior sweet potato (Ipomoea batatas [L.] Lam) using combined analysis and GGE biplot

Genetic studies on yield and yield quality are becoming benchmarks for farmers and industry in selecting and developing varieties. Evaluations that combine various stability statistics can provide more accurate information to select the ideal genotype. This study aims to identify the effect of genotype by environment interactions (GEIs) for yield and yield quality, to select high yield and stable sweet potato genotypes, as well as to select superior genotypes based on yield and yield quality. Three different environments in West Java, Indonesia, were used to test the sweet potato genotypes using a randomized block design that was repeated three times. Highly significant effects of sweet potato genotypes (G), environments (E), and GEIs were observed for yield and yield quality. The Combined ANOVA showed that GEIs effect contributed 54.88% for yield, 40.01% for sweetness, 10.46% for moisture content, 68.80% for tuber diameter, and 72.57% for tuber length from the sum of square. Five most high and stable yield on sweet potato genotypes identified by all measures, includes G4, G6, G7, G31, and G32. Genotype by yield*traits (GYT) selected seven genotypes that have superior in yield and yield quality, they were G7, G15, G4, G20, G6, G31, and G14. Based on stability measurements and GYT biplots, the genotypes G4, G6, G7, and G31 are in both slices. So that the four genotypes have high, stable yields, and have a good combination of traits for yield quality. Our findings can be used for improvement cultivation involving partner companies, partner institutions, and farmers, and the selected genotypes can be release as superior varieties candidate.

Study on the effect of growth regulators and the concentration of coconut water on the growth and yield of garlic shallots (Allium ascalonicum L.)

An investigation on the influence of Atonic Growth Regulatory Substances and coconut water immersion on the growth and yield of shallots was conducted from March 3 to May 9 in 2023, in Tawangrejo Village, Ngrambe, Ngawi. The objective of this study is to analyze the impact of different doses of ZPT Atonik and coconut water on the growth and yield of shallots (Allium ascalonicum L). The experiment was designed using a Completely Randomized Block Design (RAKL), which included two factorials. The first factorial was the level of coconut water immersion concentration (K), consisting of four levels, namely K0 = 0%, K1 = 80%, K2 = 90%, and K3 = 100%. The second factor in this study is Atonik (A), which consists of four levels: A1 = 0 ml/l, A1 = 1.5 ml/l, A2 = 3.0 ml/l, and A3 = 4.5 ml/l. Each experiment in this study will be repeated three times and comprise four treatment levels, resulting in a total of 16 treatment combinations. We analyzed the data using Analysis of Variety followed by the Honest Significant Difference Test (BNJ) at the 5% level. The study results revealed that the Atonik treatment and coconut water immersion did not have a significant effect on the observed parameters of the number of leaves (40.30), number of tubers (17.87), tuber diameter (2.45 cm), fresh weight (130.63 g), and dry weight (109.22 g), but had a significant effect on the observed parameter of plant height (41.33 cm).

Effect Of Managing Fertilizer Types And Dosages Of Kno3 On Plant Growth And Results Red Onion (Allium ascalonicum L)

This research was carried out on the basis of the increasing national market need for shallots while production still needs to be increased. This research was carried out from August 2022 to October 2022 in Semono Hamlet, Tempursari Village, Sambi District, Boyolali Regency. Altitude 184 above sea level, soil pH
 6, Vertisol soil type (PPT = Grumosol). This study used a Complete Randomized Block Design (RAKL) consisting of two factors, the first factor being the type of manure which is divided into three levels, namely Fermentation of Chicken Manure, Fermentation of Goat Manure, Fermentation of Cow Manure ( P1, P2, P3). The second factor is the dose of KNO3 fertilizer which is divided into three levels, namely dose 75 kg/ha, dose 150 kg/ha, and dose 225 kg/ha (K1, K2, K3). each with 3 replications. The parameters observed in this study were the response of shallot plants to each type of manure to the addition of KNO3 fertilizer including Growth Parameters which included plant height, number of tillers (Kaplings), Fresh Stove Weight, and Stove Weight dry while the plant yield parameters include wet tuber weight per sample (g), dry tuber weight per sample (g), tuber wet weight per plot (g), tuber dry weight per plot (g), tuber diameter (cm) to determine the most effective dosage of manure in combination with KNO3 doses to increase shallot crop yields. The results showed that the KNO3 dose of 225 kg/ha had a significant effect on the parameters of wet stover weight and dry stover weight.

Response of four local cassava accessions to bio-mulch application time

Cassava (Manihot esculenta Crantz) is widely planted on marginal land with low soil fertility. During the initial growth phase, cassava often loses competition against weeds. Legume cover crops are widely used to increase soil fertility, prevent erosion, and suppress weeds. This study aimed to determine the effect of Arachis pintoi bio-mulch application time on the growth and yield of cassava. This study was conducted using a factorial randomized block design. The first factor was four cassava accessions: Ketan Malang, Genjah Bayam, IR Jonggol, and Mangu. The second factor was six levels of bio-mulch planting time: manual weeding (without bio-mulch applications), bio-mulch planting at the same time as cassava planting, and four, eight, and twelve weeks before cassava planting. The observations included plant height, stem diameter, number of tubers, tuber weight, tuber length, plant biomass, dry matter, and productivity. The results showed that all cassava accessions responded similarly to the planting time of A. pintoi bio-mulch. Different bio-mulch application time was insignificant in the cassava growth, except for the number of tubers and tuber diameter. The twelve weeks before cassava planting tends to reduce the results of cassava accessions.Keywords: Arachis pintoi, cover crop, dry land, growth, yield

Do organic fertilization and azospirillum brasilense influence radish cultivation?

ABSTRACT The association of conventional fertilizers with fertilizers of organic origin is a well-known practice in agriculture for achieving high productivity and also with the adoption of inoculants, composed of bacteria for promoting better plant development of crops. Thus, the objective of the work was to investigate the growth and productivity of radish with organic fertilization and the influence of the use of nitrogen fixing bacteria of the genus Azospirillum spp. radish (Raphanus sativus L.) Hybrid Margaret Queen. The treatments were the use of different doses of organic fertilizer and the application of Azospirillum brasilense, besides the control. At the end of the cycle, plant height, tuber diameter, tuber fresh mass, tuber dry mass, and total tuber fresh mass were evaluated. With and without application of A. brasilense, increases of 16.5% and 6.40% in tuber diameter were obtained, respectively. Without application of A. brasilense, there was an increase of 0.37% in leaf dry mass when the maximum concentration of 8 kg m² of organic fertilizer was used. For root fresh mass and root dry mass, with foliar application of A. brasilense, there was an increase of 9.57% and 0.67%, while without A. brasilense there was an increase of 2.43% and 0.22%. There were increases of 12.83% for total fresh mass with the management of A. brasilense and 3.4% without A. brasilense, using the maximum concentration of 8 kg m² of organic fertilizer. For height, there was an increase of 5.12% without A. brasilense. It was concluded that organic fertilization alone or combined with A. brasilense is an alternative in radish production. KEYWORDS: Raphanus sativus L; organic fertilization; Productivity; Vegetables.