Sweet Corn Production Research Articles

Studying hybrids of sugar corn under the conditions of the foothill zone of the KBR

This work is devoted to the study of various hybrids of sweet corn of a new selection, recommended for cultivation in the conditions of the South of Russia. The objects of study were the first generation sweet corn hybrids: Spirit, Boston, Royalty, Vega and Overland, with maturation periods from 75 to 85 days. Sowing was carried out at the same time with reference to weather conditions and varied over the years of research. So in 2020, the sowing of all hybrids was carried out on April 25, and in 2021 it was possible to sow only on May 5. The productivity of sweet corn is highly dependent on the choice of grown hybrids, as well as growing conditions. Sweet corn seeds were purchased from trusted suppliers with a certificate of conformity. In all hybrids, under conditions of sufficient humidity, germination was high, which is explained by the simultaneity of seedlings and high germination energy. Later, getting into different growing conditions during the growing season, the shape of plants, the area of leaves, and the yield of cobs changed. The yield of commercial cobs of the studied sweet corn hybrids is closely related to their biometric parameters. The Vega and Overland hybrids showed the highest increments in the yield of commercial cobs and exceeded the control by 3.8 and 4.9 t/ha or by 18 and 23%. Hybrid Spirit, which was the control variant, showed the lowest yield. This is due to the fact that other studied hybrids are more adapted to the soil and climatic conditions of this zone.

Ekonomske performanse specijalizovanih ratarskih gazdinstava koja proizvode kukuruz šećerac

Sweet corn is not commonly produced at Serbian family farms, although it has a significant economic potential. Besides, there is a lack of research related to economic performance of the sweet corn production. Therefore, the goal of this research was to determine economic effects of introducing sweet corn in the sowing structure of specialized field crops farms in Serbia. The analysis was performed on the model of family farm specialized in the field crops production. Determination of average gross margin for appropriate field crops was followed by the optimization of farms' sowing structure (by applying linear programming approach). Authors analyzed three variants depending on sweet corn participation in the sowing structure. It was determined that the optimization itself increases the use of labor force and positively influences the level of farm gross margin. By combining the optimization with the introduction of sweet corn in the sowing structure even better results are achieved. Therefore, family farms specialized in the field crops production should be encouraged to extend their sowing structure by producing sweet corn. The paper offers an important insight into the combination of crops which can improve an overall economic performance of family farms.

EFEKTIVITAS PENGGUNAAN PUPUK NPK PHONSKA DAN JUMLAH BENIH PER LUBANG TANAM TERHADAP PERTUMBUHAN DAN PRODUKSI TANAMAN JAGUNG MANIS (Zea Mays Saccharatta Sturt)

Sweet corn commodities also experienced an increase in Indonesia. Consumption of sweet corn continues to increase in line with population growth and consumption patterns. Corn is a multi-functional plant that has many uses, and almost all parts of the plant can be used for various purposes, therefore corn has an important role in industrial development in Indonesia because it is a raw material for the food industry. The increase in consumption of corn, especially sweet corn, is very high because the demand for sweet corn is increasing from year to year. The demand for sweet corn is met in the need for action to increase production. Increased production of sweet corn can be done by preparing suitable conditions for plant growth and development, namely by improving cultivation techniques using high-yielding seeds, providing balanced fertilizers, eradicating pests and diseases, and good and correct harvest handling processes. The proper dosage of Phonska NPK fertilizer and the number of seeds per planting hole can increase the growth and production of sweet corn plants optimally. The results showed that Phonska NPK fertilizer level P3 (115.6 g/plot) had a significant effect on plant height, stem diameter, number of leaves, ear length, ear diameter, and total dissolved solids. The number of seeds per planting hole at level B1 (one seed per planting hole) had a significant effect on plant height, stem diameter, ear length, ear diameter, and total dissolved solids but had no significant effect on leaf number. The interaction of Phonska NPK fertilizer and the number of seeds per planting hole had a significant effect on stem diameter, ear length, and ear diameter but had no significant effect on plant height, number of leaves, and total dissolved solids.

EOQ Development Model in Optimize Raw Material Inventory

The purpose of this study was to determine the amount of safety inventory, order frequency, minimum inventory, maximum inventory limit, total Melon product inventory costs needed by PT. Rajawali Asia Bali uses the EOQ method. Data analyzed using the EOQ method shows that PT. Rajawali Asia Bali safety stock, it is very necessary to support the smooth distribution process that takes place. In accordance with the calculations with the formula, there is a safety stock that must be provided by PT. Rajawali Asia Bali is equal to 7,201 boxes. Planning for Sweet Corn products at PT. Rajawali Asia Bali using the EOQ method has 48.069 boxes.

Effect of FYM and silicon on productivity of organic sweet corn (Zea mays saccharata)

Sweet corn (Zea mays saccharata) under organic farming is becoming popular in India. Field experiment was conducted during 2019 and 2020 to investigate the effect of nitrogen through FYM and silicon on growth and yield of sweet corn under organic farming at Organic Farming Unit, Maharana Pratap University of Agriculture and Technology, Udaipur, Rajasthan. The experiment was conducted in split-plot design with three replications and treatments consisted of four doses of recommended dose of nitrogen (RDN) applied through farmyard manure (FYM), i.e. control, 100, 75 and 50% of RDN through FYM and four levels of silicon, i. e. control, 100, 150 and 200 kg silicon/ha. Significantly higher plant height, dry matter accumulation, leaf area index, cob length, number of grains/cob, green-cob yield, green fodder yield and biological yield of sweet corn were obtained with the application of 100% RDN through FYM followed by application of 75% RDN through FYM and silicon @ 200 kg/ha followed by application of silicon @ 150 kg/ha. Interaction effect of application of 100% RDN through FYM in combination with silicon @ 200 kg/ha recorded significantly higher green-cob yield in comparison to 100% RDN through FYM without silicon as well as at lower levels of silicon. Thus, it may be concluded that application of 100% RDN through FYM with integration of silicon @ 200 kg/ha gives better green-cob yield of sweet corn under organic farming.

Pengaruh Pupuk Kandang Plus terhadap Pertumbuhan dan Produksi Jagung Manis (Zea mays saccharata) di Kabupaten Grobogan

<p>Manure plus is manure’s nutrition improvement by the addition of organic N (<em>Leucaena leucocephala</em>) and nature P (rock phosphate). The aim of this research are to evaluate the effect of ‘manure plus’ on growth and production of sweet corn. This research was conducted experimentally using monofactor Randomized Block Design with seven treatments and four replications. The treatments are P0 (ZA + TSP), P1 (Cattle manure + ZA + TSP), P2 (Goat manure + ZA + TSP), P3 (Poultry manure + ZA + TSP), P4 (Cattle manure + RP + + <em>Leucaena</em><em> l</em><em>eucocephala</em>), P5 (Goat manure + RP+ <em>Leucaena </em><em>l</em><em>eucocephala</em>), P6 (Poultry manure + RP + <em>Leucaena </em><em>l</em><em>eucocephala</em>). All plots were given KCl (150 kg K<sub>2</sub>O/ha). The parameters were plant height, leaf’s number, cob length, cob diameter, sum of seed row, and production of sweet corn. Data were subjected to analysis of variance and followed DMRT at α = 5%. The result showed that cob diameter and sum of seed row of P4 had no significantly different compared to P1, P5 had no significantly different compared to P2, P6 had no significantly different compared to P3. The leaf’s number of P4 had no significantly different compared to P1, P5 had no significantly different compared to P2, whereas P3 had leaf’s number more than P6. All treatment had no significant effect towards plant height, cob length and production of sweet corn. Based on the research, manure plus can be used to substitute the role of manure + ZA + TSP.</p>

Transplanting and the addition of boron in sweet corn (Zea mays L. group saccharate) production

Introduction. Low seedbed temperatures at the planting and the direct sowing method can reduce the sweet corn germination. Transplanting may offer optimum environmental conditions for seed germination, early crop maturity, and increase sweet corn (Zea mays L. group saccharata) productivity. Boron deficiency depresses sweet corn yield through male sterility. Objective. To evaluate the effect of transplanting and the addition of boron in sweet corn production. Materials and methods. A field experiment was conducted from March 19 to June 20, 2020 at the Research Station of Horticulture Department and Landscape Gardening Architecture, University of Diyala, Baqubah, Iraq. Direct sowing and transplanting, and foliar application of boron at 0, 50, or 75 mg L-1 was evaluated to determine effects on the yield, the yield components, and water use efficiency of sweet corn cultivars: Roi Soleal, Seker misir, and Succar. Results. The cv. Seker Misir matured faster (57.5 days), had wider ears (4.53 cm), more kernel rows (16.0), the highest kernel yield (6.00 t ha-1), and a higher water use efficiency (WUE) (2.85 kg m-3). The cv. Succar had the longest ears (18.48 cm) and the heaviest fresh ears (251 g). Transplanting hastened the time to maturity (54.18 days), and produced the longest ears (17.91 cm), widest ears (4.52 cm), most kernel rows (15.96), heaviest fresh ears (229 g), the highest kernel yield (5.56 t ha-1), and the highest WUE (2.64 kg m-3). The 50 mg L-1 fertilizer treatment produced the longest ears (17.61 cm), widest ears (4.58 cm), more kernel rows (16.61), the highest kernel yield (5.64 t ha-1), and the highest WUE (2.68 kg m-3). The least time to maturity (57.72 days) and heaviest fresh ears (232 g) occurred with 75 mg L-1 of boron fertilizer. Conclusion. The use of 50 mg L-1 boron, as a foliar fertilizer, appears to be, next to the transplanting method, suitable for the cultivation of sweet corn plants to increase productivity and WUE.

Growth and production of sweet corn (Zea mays saccarata sturt L) with soil treatment and number of seeds per planting hole

Sweet corn production in Indonesia from is volatile and unstable. Unoptimal production of sweet corn in North Sumatra is caused by land conditions, plant populations, pest and disease and level of soil fertility. Effective and efficient soil tillage, crop spacing and number of seeds will affect the physical properties of the soil and plant productivity. This study aims to observe the best planting and tillage methods for maize. This study used a split plot design which is repeated three times with two factors, i.e. 3 levels of number of seeds per planting hole and 3 levels of soil tillage. The results showed that the treatment of tillage and the number of seeds per planting hole give significant effect on the variables of plant height, stem diameter, and total production. The interaction of these two factors showed an influence on the parameters of sweet corn plant height. The treatment of 2 seed per planting hole and 1 time of soil tillage show the best productivity compared to other treatments.

PEMBERIAN LIMBAH KARET PADAT UNTUK PRODUKSI TANAMAN JAGUNG MANIS (Zea mays saccharata Sturt): PROVISION OF SOLID RUBBER WASTE FOR THE PRODUCTION OF SWEET CORN (Zea mays saccharata sturt)

his study aims to determine the dosage of solid rubber waste on the growth and production of maize. This research was conducted in V Surodadi Village, Tugumulyo District, Musi Rawas Regency with an altitude of 97 above sea level. Conducted for 4 months, starting from April to July 2020. The study used an experimental method with a non-factorial randomized block design with 6 random arrangements and was repeated 4 times with 4 plant samples taken factorial random KO = Without using solid rubber waste, KI = 1 kg / plot, K2 = 3 kg / plot, K3 = 5 kg / plot, K4 = 7 kg / plot, K5 = 9 kg / plot. The results showed that the application of solid waste compost of 7 kg per plot (K4) gave the best response to ear weight and production of sweet corn (Zea mays saccharata Sturt).

Drought stress and K effects on contents of soil water and organic matter, CEC, exchangeable-K, yield and water productivity of sweet corn on Inceptisols

The research was conducted to study the effects of drought stress and K fertilizer on plant growth, contents of soil water (SWC) and organic matter (SOM), cation exchange capacity (CEC), K-exchange, yield and water productivity of sweet corn (Zea mays saccharata Sturt.) grown in Inceptisols. The research was conducted on a plastic house in a controlled culture experiment field, Faculty of Agriculture, Universitas Padjadjaran using a factorial randomized block design (RBD). The first factor was the four percentages of drought stress (0%, 20%, 40% and 60%). The second factor was three levels of KCl dose (1, 1.25 and 1.50 times the recommended dose of 50 kg ha−1 KCl). The treatment combinations were repeated three times. The interaction between 20-40% drought stress and 1.50 times dose of KCl had a significant effect on stem diameter and independently this KCl dose affected the leaf numbers, but without drought stress. The treatment without drought stress resulted in highest plant height and leaf area index, while drought stress of 40-60% gave higher SOM and CEC, even in 60% drought stress showed a higher exchangeable K. The application of 1.25 times dose of KCl caused higher K-uptake, while the treatment of 40% drought stress gave higher water productivity.

COMBINATION OF PLANTING METHODS AND MULTIPLE NPK FERTILIZER ON PLANT GROWTH AND PRODUCTION SWEET CORN (Zea mays saccharata Sturt)

This study aims to obtain differences in the response of growth and yield of Sweet Corn (Zea mays saccarhata Sturt) using a single row planting system and a two row planting system. This research was conducted in Sukajadi Village, Banyuasin Regency, South Sumatra Province. Research time in January. This study used a split plot design with 8 treatment combinations which were repeated 4 times. The treatment factors in question are as follows: Main Plot : Single Row Planting System (S1), Two Row Planting System (S2), P0: No treatment , P1: NPK : 60g (plot) P2: NPK : 120g (plot) P3 : NPK : 180g (plot). The variables observed in this study were plant height/plant (cm), length of seed cob/plant (cm), cob weight/plant (gr), production of plots/plot (kg). Based on the results of the study, it was shown that the treatment with a two-row planting system (DB) and application of 300kg/ha compound NPK fertilizer gave the best effect on sweet corn production of 12.96 kg/plot or equivalent to 17.28 tons/ha.

Rate and Timing of Meat and Bone Meal Applications Influence Growth, Yield, and Soil Water Nitrate Concentrations in Sweet Corn Production

Using local resources and minimizing environmental impacts are two important components of sustainable agriculture. Meat and bone meal (MBM), tankage, is a locally produced organic fertilizer. This study was conducted to investigate the response of sweet corn (Zea mays L. var. saccharata Stuart.) and soil water nitrate (NO3-N) concentration to MBM application at two locations, Waimānalo and Poamoho, on the island of O’ahu. The objectives were to determine effects of six application rates (0, 112, 224, 336, 448 and 672 kg N ha−1) and two application timings (preplant and split application) on: (1) sweet corn growth, yield, and quality, and (2) soil water nitrate concentration within and below the root zone. The split-plot was designed as four replicates randomly arranged in a complete block. Plant growth of roots and shoots, yield, and relative leaf chlorophyll content of sweet corn increased with increasing application rates of MBM in both locations. At Poamoho, yield was 13.6% greater in preplant versus split application. Nitrate-nitrogen losses were reduced by 20% at Waimānalo and 40% at Poamoho when MBM was applied in split applications. These findings suggest that MBM is an effective nitrogen source for sweet corn and a split application of MBM may reduce the potential for pollution.

Enhanced Intercropping Productivity of Sweet Corn and Okra in Young Rubber Plantation

Enhanced Intercropping Productivity of Sweet Corn and Okra in Young Rubber Plantation

Reduction of Synthetic Nitrogen Fertilizer Using Tithonia-based Liquid Organic Fertilizer for Sweet Corn Production in Ultisols

Nitrogen (N) fertilization method is of great interest in nutrient management in sweet corn production. Sweet corn production areas in Indonesia have been increasingly extended to Ultisol land due to decline in the amount of arable land. Proper nitrogen management in Ultisols including the use of tithonia-based liquid organic fertilizer (LOF) as a way of reducing the use of synthetic N fertilizer need to be investigated. In this experiment, we aimed to determine the effects of various combinations of tithonia-based LOF and synthetic N on the growth and yields of sweet corn grown in Ultisols. This experiment was conducted from April to July 2018, in Bengkulu City, Indonesia at an elevation of 36 m above sea level and was arranged in complete randomized design with four replications. Treatments consisted of five combinations of LOF and synthetic N, i.e. 0 % LOF+100 % N, 25 % LOF+75 % of N, 50 % LOF+50 % N, 75 % LOF+25 % N, and 100 % LOF+0 % N. The results indicated that fertilizer combination composition significantly affected plant height, leaf greenness, husked ear weight, unhusked ear weight, and ear length of sweet corn, but did not affect leaf number and shoot dry weight. Overall, the use of 75% LOF in combination with 25% synthetic N produced similar results to 100% synthetic N. It was concluded that the use of tithonia-based LOF reduced the use of synthetic N fertilizer in sweet corn production grown in Ultisols. This conclusion should be further evaluated for sweet corn production under field conditions in Ultisols.

Pengaruh Konsentrasi Pupuk Kalium Boron dan Magnesium Phospat terhadap Produksi Jagung Manis (Zea mays saccharata Sturt)

Under the guidance Ir. Endang Sri Wahyuni, MP as the main supervisor and the supervisor Ir. Nanik Furoidah, MP as member. This study aims to determine the effect of potassium fertilizer concentration of Boron and Magnesium Phosphate on the growth and production of sweet corn (Zea mays saccharata Sturt.). The study was conducted in August until November 2016 in the village Kertonegoro, sub Jenggawah, Jember district, in paddy fields with a height of ± 60 meters above sea level. This study was conducted using a randomized block design Complete (RAK), two factors with three replications. The first factor is the concentration of potassium fertilizer Boron (K) comprise three levels ie concentration of 0 ml/liter (K0), a concentration of 1.5 ml/liter (K1), the concentration of 3 ml/liter (K2). The second factor is the Magnesium Phosphate (P) comprises 3 levels ie concentration of 0 ml/liter (P0), the concentration of 2 ml/liter in preparation for planting, preparation for the formation of flowers, fruit, fruit ripening, 0.5 ml / liter age of 15 days, and 1 ml/liter of routine applications 7 days (P1), a concentration of 4 ml/liter in preparation for planting, preparation for the formation of flowers, fruit, ripening fruit, 1 ml/liter age of 15 days, and 2 ml/liter routine application of 7 days (P2). The results showed that the treatment concentration of fertilizer Potassium Boron and Magnesium Phosphate significantly affected all observations. Treatment of Potassium Boron concentration of 3 ml/liter (K2) gives the sweet corn production is higher than other treatments. Likewise, treatment of Magnesium Phosphate concentration of 4 ml / liter in preparation for planting, preparation for the formation of flowers, fruit, ripening fruit, 1 ml/liter age of 15 days, and 2 ml/liter of routine applications 7 days (P2) gives the highest compared to treatment more.

Influence of nano nitrogen on growth, quality and nutrient uptake of Kharif sweet corn (Zea mays Saccharata)

A field experiment was conducted for boosting the productivity of kharif sweet corn (Zea mays Saccharata) at Agronomy Farm,RCSM College of Agriculture, Kolhapur (M.S.), India during kharif, 2020 in black Vertisolsoil using split plot design with four replications and two factors, where main plot factors consist of time of application viz T1:15 days after sowing (DAS), T2: 30 DAS and T3: 45 DAS and sub plot factors consist of levels of nano nitrogen (N) fertilizers vizN1: 1.00 L ha-1, N2: 1.25 L ha-1 and N3:1.50 L ha-1. The results showed that at harvest, maximum plant height (183.41 cm), number of leaves (8.86 plant-1), leaf area (58.40 dm2plant-1), dry matter accumulation (117.18 gplant-1), length of cob (18.55 cm), diameter of cob (16.83 cm), weight of cob per plant (208.65 g), number of grains (371.25 cob-1), green cob yield (125.96 q ha-1), green fodder yield (344.39 q ha-1), total uptake plant in total ((264, 98 and 230 kg ha-1),yield of protein by grain (92.89 g kg-1) and stover (50.96 g kg-1) were obtained from treatment N3 (1.5 L ha-1) which was on par with treatment N2 (1.25 L ha-1) and significantly superior over N1 (1 L ha-1). While main plot showed that at harvest plant height (191.90 cm), number of leaves(10.09plant-1), leaf area (62.63 dm2plant-1), dry matter accumulation (123.51 gplant-1), length of cob (20.56 cm), diameter of cob (19.71 cm), weight of cob (222.29 g plant-1), number of grains (402.07 cob-1), green cob yield (138.32q ha-1),stover yield (359.75q ha-1), total uptake(287, 113 and 262 kg ha-1), yield of protein by grain (97.36 g kg-1) and stover (51.77 g kg-1)were significantly maximum when foliar spray of NN was done at 15 (DAS). The foliar application at 15 DAS had taken minimum number of days to reach 50 per cent of tasselling (51.62 days) and silking (55.97 days).

Studies on germination and seedling development of winter maize (Zea mays L.) as influenced by various seed priming methods

A field experiment was conducted for boosting the productivity of kharif sweet corn (Zea mays Saccharata) at Agronomy Farm,RCSM College of Agriculture, Kolhapur (M.S.), India during kharif, 2020 in black Vertisolsoil using split plot design with four replications and two factors, where main plot factors consist of time of application viz T1:15 days after sowing (DAS), T2: 30 DAS and T3: 45 DAS and sub plot factors consist of levels of nano nitrogen (N) fertilizers vizN1: 1.00 L ha-1, N2: 1.25 L ha-1 and N3:1.50 L ha-1. The results showed that at harvest, maximum plant height (183.41 cm), number of leaves (8.86 plant-1), leaf area (58.40 dm2plant-1), dry matter accumulation (117.18 gplant-1), length of cob (18.55 cm), diameter of cob (16.83 cm), weight of cob per plant (208.65 g), number of grains (371.25 cob-1), green cob yield (125.96 q ha-1), green fodder yield (344.39 q ha-1), total uptake plant in total ((264, 98 and 230 kg ha-1),yield of protein by grain (92.89 g kg-1) and stover (50.96 g kg-1) were obtained from treatment N3 (1.5 L ha-1) which was on par with treatment N2 (1.25 L ha-1) and significantly superior over N1 (1 L ha-1). While main plot showed that at harvest plant height (191.90 cm), number of leaves(10.09plant-1), leaf area (62.63 dm2plant-1), dry matter accumulation (123.51 gplant-1), length of cob (20.56 cm), diameter of cob (19.71 cm), weight of cob (222.29 g plant-1), number of grains (402.07 cob-1), green cob yield (138.32q ha-1),stover yield (359.75q ha-1), total uptake(287, 113 and 262 kg ha-1), yield of protein by grain (97.36 g kg-1) and stover (51.77 g kg-1)were significantly maximum when foliar spray of NN was done at 15 (DAS). The foliar application at 15 DAS had taken minimum number of days to reach 50 per cent of tasselling (51.62 days) and silking (55.97 days).

Improvement of plant growth and production of sweet corn with organic-N and nature-P enriched manure and inorganic fertilizer in Batang District of Central Java Indonesia

Crop productivity is affected by organic and inorganic fertilizer. Sweet corn (Zea mays saccharatta) is used under crop-livestock system (CLS) in Indonesia. The characteristic of CLS is crop yield for food, stover and cornhusk for livestock feed, and dung (i.e. cattle, goat, poultry) for manure as organic fertilizer. Organic-N (Leucaena leucocephala) and nature-P (rock phosphate) enhanced the quality of manure if added at the initial fermentation process that was called manure plus. Present study investigated the effect of organic-N and nature-P enriched manure application on plant growth and sweet corn production, stover and cornhusk production in Batang District of Central Java. The experiment was conducted using a randomized complete block design with seven treatments and four replicates, T1 (SA+TSP), T2 (cattle manure+inorganic), T3 (cattle manure plus), T4 (goat manure+inorganic), T5 (goat manure plus), T6 (poultry manure+inorganic), T7 (poultry manure plus). The results showed that plant height and sweet corn production, stover and cornhusk production significantly affected by the treatment. Goat manure plus resulted in similar on plant growth and sweet corn production compared to manure+inorganic fertilizer. It was concluded that N-Leucaena leucocephala and P-RP enriched manure replaces inorganic fertilizer (SA+TSP).

Application of biological fertilizers on growth and yield of sweet corn (Zea mays saccharata Sturt) in dry land

Sweet corn (Zea mays saccharata Sturt.) is such a popular commodity that it has good market opportunities. Increase productivity of sweet corn, necessary through improving its physical, chemical, and fertility properties. Continuous use of inorganic fertilizers can reduce soil fertility. Biofertilizer is an alternative to improve and enhance soil quality to increase growth and increase plant’s yield and quality significantly. The study aimed to determine the effect of biofertilizers’ application on the growth and yield of sweet corn on the upland. The research was conducted in 2016 in Tapin district, South Kalimantan Province. It is using a randomized block design with four treatments and eight replications. The treatments consisted of Po without biofertilizer + NPK fertilizer at a dose of 100%, P1 biofertilizer + NPK fertilizer at a dose of 100%, P2 biofertilizer + NPK fertilizer at a dose of 75%, P3, biofertilizer + NPK fertilizer at a dose of 50 %. The variables observed were plant height, cob weight with husk, cob weight without husk, cob diameter, cob length, number of seed columns, and production. The results showed that applying biofertilizer increase cob weight and sweet corn production.

Performance of Physiological Characteristics and Content of Sweet Corn Mutant Some Lines of Sugar (Zea mays L. saccharate Sturt.) Sied of Gamma Ray Irradiation in M1 Generation.

ABSTRACT Sweet corn has a multipurpose function. The need for this commodity continues to increase every year, while the sied of production produced by farmers have not been able to meet the needs. One effort to increase sweet corn production is by mutation techniques to assemble the genetic traits of varieties. This study aims to obtain the best interaction between sweet corn lines and gamma ray irradiation doses on physiological characteristics and sugar content in maniss corn plants (Zea mays L saccharata Sturt). This research was carried out in PT. Pertani, Sirnabaya Village, East Telukjambe sub District, Karawang start in May 2019 until September 2019. The method used is an experimental method using a factorial randomized block design. There are two factors consisting of 20 treatments. The first factor was the sweet corn with replications consisting of 5 lines, the second factor is the dose of gamma ray irradiation consisting of 4 levels. The effect of the treatment was analyzed by analysis of variance, to find out the best treatment continued with the DMRT (Duncan Multiple Range Test) test at 5% level. There was the best interaction between sweet corn lines and gamma ray irradiation dose, the best effect was on G1M1 treatment in almost all parameters of observation (plant height, number of leaves, weight of cobs with hurt, weight of cobs without hurt, long of cobs with hurt, long of cobs without hurt, diameter of cobs with hurt, diameter of cobs without hurt, sugar content, leaf area, leaf area index, crop yields). Keywords : lines, sweet corn, gamma ray irradiation, sugar content