Cob Weight Research Articles

Evaluation of the yield performance of maize cultivars (Zea mays L.) in a Semi-Arid Region of the Eastern Cape Province, South Africa

Maize is considered as one of the important grain crop in the world. Maize is in high demand within district because it is one of the staple food and also used for animal feed. Current yield attained by small scale farmers is lower than the potential of our existing varieties. In field experiment at Njizweni situated in Gqeleni sub-district was conducted in November 2018 to evaluate the agronomic and yield performance maize cultivars in a semi-arid environment. Plant population, plant height, leaf area, number of cobs/plant, cob length, number of grains per cob, 100 grain weight and number of cobs were significantly different (p<0.05) between cultivars. There was no significant difference (p>0.05) on maize grain yield although maximum number of cobs per plant (1.76) was recorded on PAN 6R-710BR, PAN5R-591R, BG 5285 and WE 6208B.

The Effect of Fertilizer Treatment on the Morphology of Maize (Zea mays) Planted in An Intercropping System in the Immature Oil Palm Plantation

Applying and optimizing an intercropping system between oil palm and seasonal crops such as maize in the immature palm oil plantation is one way of obtaining additional income for farmers until the main crop (oil palm) mature and ready to harvest. The aim of the research was to determine the effects of fertilizers, particularly nitrogen (N) and potassium (K) on the growth and production of maize in an intercropping system with oil palm. The experiment, using one-factor randomized complete block design, was conducted at the Cikabayan Experimental Station, IPB University, Indonesia, from August to December 2020. Four set-ups were prepared corresponding to four different fertilizer applications as follows: A0 (without treatment), A1 (240 g Urea + 80 g KCl + 320 g SP-36 per plot), A2 (480 g Urea + 160 g KCl + 320 g SP-36 per plot), A3 (720 g Urea + 240 g KCl + 320 g SP-36 per plot). Applying the highest dosages of N and K (A3), significantly increased plant height, fresh weight, number of leaves, leaf area, stem diameter, cob length, cob weight, and husk-free cob weight. Intercropping maize with immature oil palm did not affect the oil palm growth.

Assessment of Cob Characteristics of Sweet Corn on Sandy Soils under Different Irrigation Methods

Drip irrigation is an incredibly efficient watering method that slowly delivers water directly to a plants root system, through a network of small pipes. This minimizes conventional losses such as deep percolation, runoff and soil erosion. A few low cost automation systems were developed and evaluated their performance with drip irrigation on sweet corn. Compared to flood irrigation and paired row drip irrigation, single row drip irrigation produced better results. The results indicated that the number of kernel rows per cob, number of kernels per cob, length and diameter of the cob and individual fresh cob weight were observed to be more in single row as compared to flood irrigation and paired row drip irrigation systems. The yield response was also observed to be best in soil moisture sensor based irrigation with single row spacing.

Exploiting combining ability and maternal effects for genotypic selection of best hybrids in sweet corn and normal corn crosses

Twenty one sweet – normal corn crosses and twenty one normal – sweet corn crosses obtained by [3 × 7] sweet corn × normal corn and [7 × 3] normal corn × sweet corn crosses, respectively were scrutinized for the advantage of reciprocal cross effects in addition to the combining ability studies to screen superior hybrids for yield and quality related traits. Based on the mean reciprocal cross effect of common parental genotypes, NCL3 and NCT7 were identified as the best fit for seed and pollen parents for green cob weight, respectively. Potential heterotic combinations were discovered indirect and reciprocal crosses as well. Reciprocal cross effects were significant only for green cob weight, plant height and reducing sugars, however when screened at specific cross combinations levels, many crosses had appreciable hybrid vigour in reciprocal crosses. Thus maternal effect as an added approach for hybrid screening is advisable. Key words: Maternal effect, specific combining ability, line × tester analysis, field corn, sweet corn  

GENETIC VARIABILITY AMONG MAIZE GENOTYPES FOR GRAIN YIELD AND ITS COMPONENTS UNDER AUTUMN CROP SEASON OF MULTAN

The present research was conducted at the research area of the MNS-University of agriculture Multan Pakistan during kharif 2018, to determine the genetic variability for yield related traits of twenty-five maize (Zea mays L.) hybrids collected from International Maize and Wheat Improvement center (CIMMYT). The study was carried out in a randomized complete block design (RCBD) with two replications. Significantly variability (P≤0.01) among the hybrids were found for all yield related traits. Mean values for plant height were ranged from 82.61 to 223.72 (cm), ear height from 23.6 to 98.5 (cm), ear length from 9.8 to 21.8 (cm), number of ears from 1.005 to 1.85, cob weight from 67.63 to 179.3 (g), kernels per cob from 198.1 to 574.2, kernel rows per cob from 10 to 15.54, kernels per row 18.520 to 38.950, 100 grains weight from 18.3 to 34.4 (g) and grain yield per plant from 44.32 to 149.40 (g). Highest estimate of genotypic (GCV) along with phenotypic (PCV) coefficient of variations was recorded for ear height 43.07 45.13 %, plant height 30.20 and 33.23%, grain yield per plant 31.75 and 33.54 %, cob weight 27.46 and 29.34% and kernels per cob 24.13 and 25.13% respectively. Hybrid CZH132151 and CZH132150 performed better for yield related traits. All traits were significantly correlated with each other except number of ears per plant which was non-significantly correlated with most of the traits. The positive correlations suggest that the desired characters in these hybrids can be improved simultaneously in further maize breeding programs. Predicted on the results of current study, maize hybrid CZH132151 and CZH132150 could be suggested for commercial cultivation for the agro climatic condition of Multan.

GENETIC VARIABILITY AMONG MAIZE GENOTYPES FOR GRAIN YIELD AND ITS COMPONENTS UNDER AUTUMN CROP SEASON OF MULTAN

The present research was conducted at the research area of the MNS-University of agriculture Multan Pakistan during kharif 2018, to determine the genetic variability for yield related traits of twenty-five maize (Zea mays L.) hybrids collected from International Maize and Wheat Improvement center (CIMMYT). The study was carried out in a randomized complete block design (RCBD) with two replications. Significantly variability (P≤0.01) among the hybrids were found for all yield related traits. Mean values for plant height were ranged from 82.61 to 223.72 (cm), ear height from 23.6 to 98.5 (cm), ear length from 9.8 to 21.8 (cm), number of ears from 1.005 to 1.85, cob weight from 67.63 to 179.3 (g), kernels per cob from 198.1 to 574.2, kernel rows per cob from 10 to 15.54, kernels per row 18.520 to 38.950, 100 grains weight from 18.3 to 34.4 (g) and grain yield per plant from 44.32 to 149.40 (g). Highest estimate of genotypic (GCV) along with phenotypic (PCV) coefficient of variations was recorded for ear height 43.07 45.13 %, plant height 30.20 and 33.23%, grain yield per plant 31.75 and 33.54 %, cob weight 27.46 and 29.34% and kernels per cob 24.13 and 25.13% respectively. Hybrid CZH132151 and CZH132150 performed better for yield related traits. All traits were significantly correlated with each other except number of ears per plant which was non-significantly correlated with most of the traits. The positive correlations suggest that the desired characters in these hybrids can be improved simultaneously in further maize breeding programs. Predicted on the results of current study, maize hybrid CZH132151 and CZH132150 could be suggested for commercial cultivation for the agro climatic condition of Multan.

Performance of corn hybrids for in natura consumption in the Pontal do Triângulo Mineiro region of Brazil

Corn is considered one of the most economically important crops in the world. However, in addition to its importance for grain production, this crop stands out for the consumption of green corn. This study aimed to characterize different corn hybrids grown in the Pontal do Triângulo Mineiro region of Brazil, considering the agronomic characteristics of importance and the preference of local consumers. We evaluated six characteristics as follows: cob length (CL), cob diameter (CD), cob weight with husks (WWH) (g), weight without husks (WWNH) (g), soluble solids content (SS) (°Brix), and plant population per ha (PP). Data were subjected to analysis of variance and the means were compared by the Scott-Knott test at a 1% probability level. For the sensory analysis, we evaluated the flavor, color, texture, and purchase intention characteristics of corn cobs. The hybrids XB6012 Bt, R9789 vip3, SX 8555 vip3, SX 7005 vip3 and BM709 PRO2 showed higher values for CL and WWNH, characteristics of importance for the fresh corn consumer market. The hybrid BM 709 PRO2 had significant potential compared to the others, due to the higher values of CL and CD, in addition to being among the hybrids with the highest WWNH. Based on the sensory analysis, the hybrids SX 7005 vip3 and DKB 390 PRO3 stood out in terms of flavor and texture, surpassing the local commercial corn.

Effect of legowo planting system and doses of cow manure on growth and yield of maize (Zea mays L.)

Increasing of maize productivity can be reched through using of superior varieties BISI 18, aplication of organic fertilizer, and regulation of crop populations. This study was aimed to know the influence of jajar legowo planting system (2:1) and cow manure on growth and yield of maize. This research was conducted in Bualemo B, Bualemo, Banggai from July up to October 2020. The experiment was arranged in Randomized Block Design with 2 factors, the first factor is the spacing of planting in legowo planting system (2:1), which consists of 3 levels namely 70 x 25 x 25 cm (J1), 70 x 30 x 30 cm (J2), 70 x 35 x 35 cm (J3), the second factor is the dose of manure which consists of 3 levels namely 8 tons/ha (K1), 9 tons/ha (K2), and 10 tons/ha (K3). Each treatment had 3 replications so there were 27 treatment plots. The results showed that the combination of jajar legowo planting system and cow manure has no effect on the height of plants at 2, 4, and 6 weeks after planting, as well as the number of leaves, but giving the effect on the height of plants at 8 weeks after planting. The combination of jajar legowo planting system and cow manure has a real effect on the average weight of cob and has a very real effect on dry weight per plot. The weight average in corn cobs about 239.67 grams in the spacing of planting 70 x 35 x 35 cm with 8 tons/ha dose of manure. While the grain dry weight average is highest in the spacing of planting 70 x 35 x 35 cm with 10 tons/ha dose of manure and it is about 212.56 ounces.

Effect of different rates of sawdust - piggery compost on soil properties and yield of maize in nutrient depleted soil

Compost is an important source of organic fertilizer that can be used to amend degraded soil to improve soil nutrient and crops yield. This experiment was to evaluate the effect of sawdust – piggery compost on soil properties, growth and yield of maize and it was carried out at the Ambrose Alli University Teaching and Research Farm, Emaudo, Ekpoma, Edo State. The experiment was fitted in a Randomized Complete Block Design (RCBD) with seven treatments and three replicates. The treatments were; control (0), 2, 4, 6, 8, 10 and 12 tonnes of sawdust – piggery compost per hectares (ha-1). Data collected were analysed using ANOVA and LSD was used to separate means. Soil nutrients were below critical levels and the application of compost improved fertility status of the soil. Growth parameters, dry matter yield, cob weight, grain yield and nutrient uptake were determined. It was observed that application of Sawdust – piggery compost significantly (p 0.05) increased the growth of maize compared to control. The application of 8 to 12 tonnes of sawdust – piggery compost significantly (p 0.05) increased the plant height, leaf area and stem girth of maize compared to other treatments. The application of 8 to 12 tonnes per hectares (ha-1) of sawdust – piggery compost significantly (p 0.05) increased the cob weight, grain and dry matter yield of maize compared to other treatments, however, the application of 10 t ha-1 of compost to maize increased grain yield of maize than others rate of applications with the yield value of 4.60 t ha-1. The uptake of nitrogen, phosphorus and potassium were higher with application of 12 tonnes of compost. In conclusion, the application rates of 10 t ha-1 of sawdust – piggery compost per hectare on nutrient depleted soils will improve the growth and yield of maize.

Pengaruh Pupuk Amonium Klorida terhadap N-Total Tanah, Serapan N, dan Hasil Jagung Manis (Zea Mays Saccharata Sturt) pada Inceptisol Jatinangor

In the past decade, Indonesian interest towards sweet corn has increased. This condition creates a wide market opportunity for sweet corn. However, sweet corn cultivation in Indonesia is often constrained by low soil fertility. One of the essential nutrients needed by sweet corn is nitrogen. Nitrogen can be obtained from inorganic fertilizers such as Ammonium Chloride (NH4Cl) fertilizer. This research aimed to determine the effect and the best dosage of Ammonium Chloride (NH4Cl) in increasing N-total, N uptake, and yield of Sweet Corn (Zea mays saccharata Sturt) of Talenta variety on Jatinangor Inceptisol. This experiment was conducted at the research field of Soil Chemistry and Plant Nutrition, Department of Soil Science and Land Resources, Faculty of Agriculture, Universitas Padjadjaran, Jatinangor from July to October 2020. The experimental design used in this research was Randomized Block Design (RDB), which consisted of nine treatments with 1 control treatment (without fertilizer), 1 standard single N, P, K fertilizer treatment, 3 dosages of Ammonium Chloride (NH4Cl) fertilizer treatment, and 4 combinations of Ammonium Chloride (NH4Cl) fertilizer with ¾ recommended dose of standard N, P, K fertilizer. The results showed that the combination of Ammonium Chloride (NH4Cl) fertilizer affected the total Nitrogen content, nitrogen uptake, and yield of sweet corn. Combination of 1 ¼ dose of Ammonium Chloride (NH4Cl) fertilizer with ¾ recommended dose of standard N, P, K fertilizer show the highest increase in total nitrogen (0,24%), nitrogen uptake (2,72 g per plant), and fresh weight of the corn cobs (0,42 kg per plant).

Baby corn production and utilization of remaining fodder in total mixed ration of buffalo calves

This study was taken up to find out suitable maize variety cultivated with or without fertilizer for baby corn ear production and evaluation of leftover fodder/green stalks as livestock feed. Experiment-1: Six varieties of hybrid maize [PMH-1 grain (V1), Bulland (V2), African Tall (V4), Dekalb 7074 Monsanto (V5), Proagro 4640 (V6), Egyptian variety G-5414 (V7)] and one composite maize variety J1006 (V3) were cultivated without fertilizer (F1), with either Azotobacter treated seed (F2), recommended dose of fertilizer (F3), or F2 + F3 (F4) at the University Farm. Experiment-2: The leftover fodder of the best baby corn hybrid variety and that from V3 were evaluated in total mixed ration (TMR) as feed for buffalo calves. In Experiment-1 the weight of edible cob without husk and fodder yield were the highest (P<0.01) in V2. The in vitro net gas production, digestibility of nutrients and ME availability from the fodder was the highest in V7 comparable to V2, but higher than other varieties. The fodder from baby corn G-5414 was considered as the best. In Experiment-2 the chemical composition and in vitro evaluation of TMRs containing either conventional maize fodder (TMR-1; J-1006) or baby corn fodder (TMR-2; Baby corn G-5414) were comparable. Both the TMRs were iso-nitrogenous and iso-caloric. The digestibility of proximate and a cell wall constituent was considerably higher in calves fed TMR-2 than those fed TMR-1. The efficiency of nitrogen utilization, blood profile and excretion of purine derivatives in the urine were comparable in both groups. It was concluded that fresh baby corn fodder can be utilized efficiently by the ruminants without any adverse effect on the health of animals.

Parameter Genetik Hasil Persilangan Jagung Bersari Bebas untuk Mendapatkan Galur Berbiji Ungu

Corn (Zea mays) is a cereal crop and has become a staple food. Purple corn has more excess compared to corn in general. In addition, purple corn has high nutrient content and anthocyanin levels. This study aims to determine genetic parameters such as variability, heritability, and genetic advance of the F2 generation resulting from an open-pollinated hybridization. The research was conducted from January 2020 to June 2020 on the Research and Experimental Field of the Department of Agrotechnology, Universitas Bangka Belitung. The work used a single plant design. The lines used were derived from the results of the previous selection stage. The results showed that the phenotype variability was relatively wide on the weight character of ear cobs with cornhusk, and the cob weight without cornhusk. High heritability values are found in the characters of harvest age, age of male flowering, and age of female flowering. The value of expected genetic advance for high expectations is found in the characters of plant height, the row number of seeds, the weight of 100-seeds, and the weight of cob with cornhusk. The selection results suggest nine corn lines that can be used for the next generation selection. Keywords: corn, expected genetic advance, heritability, purple, variability

Heat Stress Effect on the Grain Yield of Three Drought-Tolerant Maize Varieties under Varying Growth Conditions.

A rise in global temperature will reduce maize yield, particularly in Africa, where maize is a staple food. Therefore, improving maize yield under heat stress will promote food security in the region. The objective of this study was to assess the influence of heat stress on the grain yield of drought-tolerant maize varieties under varied growth conditions. The experimental design used was a 2 × 3 × 3 × 2 factorial fitted into a completely randomized design with four replications. The factors were heat stress, maize variety, soil amendment, and soil type. The results showed a better yield from sandy clay loam over loamy sand soil. Varieties WE5323 and ZM1523 amended with poultry manure gave the best yield under the non-heat and heat-stressed environments, respectively. Heat stress reduced the cob weight, grain weight, grain number, and stover dry weight by 64, 73, 69, and 23%, respectively. Grain number, grain weight, and cob weight were the most informative yield attributes in this study and should be considered in a maize selection program. The ranking for the maize varieties was WE5323 > ZM1523 > WE3128. Drought-tolerant maize varieties can be useful in heat stress mitigation. This information is useful for the simulation of maize yields for heat stress-prone areas in Sub-Saharan Africa.

Respon pertumbuhan dan hasil tanaman jagung akibat perlakuan pupuk organik cair papua nutrient dan sistem budidaya

Corn are one of the leading food crop commodities. Corn, like plants in general, requires nutrients that are absorbed from the soil. One of the potentials of reliable organic fertilizers to support the Go Organic program is the utilization of liquid organic phosphate fertilizer "Papua Nutrient". This liquid organic fertilizer is product innovation of raw materials derived from West Papua's natural resources in the form of krandalit phosphate deposit soil. This study was conducted at the Amban Pantai Experiment Garden owned by the University of Papua, statistically designed using a completely randomized design. The combination of Papua Nutrient fertilizer and cultivated system resulted in total 10 treatments which were then repeated 4 times so that 40 experimental units were obtained. Observations were made on variable of growth and plant yield such as plant height, number of leaves, flowering time, length of panicles, and fresh weight of cobs. The combination of spraying treatment of liquid organic fertilizer Papua Nutrient with cultivation system performed a different influence on the growth and yield of corn crops. Corn crops that are treated with liquid organic fertilizer at a concentration of 10 cc/L of water in intercropping system performed the best results on the high parameters of the plant (4-6 weeks after planting) and the parameters of fresh weight of the cob.

Effect of nano nitrogen on yield attributes of sweet corn (Zea mays Saccharata) and economics

A field experiment was conducted at Agronomy Farm, RCSM College of Agriculture, Kolhapur (M.S.), India during Kharif, 2020 in black Vertisol soil using split plot design with four replications. The 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 doses of nano nitrogen (N) fertilizers viz., N1: 1.00 litre per ha, N2: 1.25 litre per ha and N3: 1.50 litre per ha making total nine treatment combinations. The results of main plot showed that length of cob (20.56 cm), diameter of cob (19.71 cm), weight of cob per plant (222.29 g), number of grains per cob (402.07), green cob yield per ha (138.32 q), green fodder yield per ha (359.75 q), protein content in grain (9.74%) and crude protein in stover (5.18%) were significantly maximum when foliar spray was done at 15 days after sowing (DAS). The gross monetary return (Rs. 5,93,172.04 ha-1) and net monetary return (Rs. 3,78,016.10 ha-1) were significantly maximum with foliar spray at 15 DAS (T1) over later spraying at 30 DAS (T2) and 45 DAS (T3). While, in sub-plot length of cob (18.55 cm), diameter of cob (16.83 cm), weight of cob per plant (208.65 g), number of grains per cob (371.25), green cob yield per ha (125.96 q), green fodder yield per ha (344.39 q), protein content in grain (9.29%) and crude protein in stover (5.10%) were obtained from treatment N3 (1.5 litre ha-1) which was on par with treatment N2 (1.25 litre ha-1) and significantly superior over N1 (1 litre ha-1). The highest value of the gross monetary return (Rs. 5,80,827.23 ha-1) and net monetary return (Rs. 3,59,534.55 ha-1) were obtained from treatment N3 (1.5 litre ha-1) which was at par with treatment N2 (1.25 litre ha-1) and significantly superior over treatment N1 (1.00 litre ha-1).

PENGARUH TAKARAN PUPUK KANDANG AYAM DAN PUPUK KALIUM TERHADAP PERTUMBUHAN DAN HASIL TANAMAN JAGUNG MANIS (Zea mays saccharata L.) VARIETAS TALENTA

This research aimed to figure out the interaction between chicken manure dosage and potassium fertilizer towards the growth and crop yields of sweet corn (Zea mays saccharata L) Varieties of Talenta and to obtain the right dosage of chicken manure and potassium fertilizer that could give the best impact towards the growth and crop yields of sweet corn (Zea mays saccharata L) Varieties of Talenta. This research had been started from March to June 2021, in Ciheulang Village, RT 02 RW 06, Ciparay District, Bandung Regency, Province of West Java, by height ±750 meters above the sea level. This research used factorial pattern Randomized Block Design method with 3 times repeat. Factor I: the dosage of chicken manure (a1 = 5 ton/ha, a2 = 10 ton/ha, a3 = 15 ton/ha). Factor II: the dosage of potassium fertilizer (k1 = 100 kg/ha, k2 = 150 kg/ha, k3 = 200 kg/ha). The result findings showed that occured interaction between the dosage of chicken manure and the dosage of potassium fertilizer towards the plant’s height at the age of 35 days after planting, it was showed by the combination of a3k3 treatment (15 ton/ha of dosage of chicken manure and 200 kg/ha of dosage of potassium fertilizer). The giving of chicken manure with dosage 15 ton/ha gave better impact towards the height of plants and cob weights without cornhusk per plot. The giving of potassium fertilizer with dosage 150 kg/ha gave better impact cob weights without cornhusk per plot. While the dosage of 200 kgs/ha of potassium fertilizer gave impact towards the height of plant.

Effect of Residuses Clover and Yellow Corn (spring lug) under The effect of Different Tillage Systems in the Growth Characteristics and Yield of the yellow Corn crop (autumn lug) Cultivated according to Crop Rotation system in Soil Gypsiferous

Crop rotation system was practiced under the effect of different tillage systems to find their influence on the growth characteristics and yield of corn (autumn season) inagypsiferous soil. Clover and corn crop were planed in spring season 2018-2019. Under the effect no tillage system (NT) and the reduced tillage (RT) and conventional tillage (CT) , and keeping on levels (0% , 50% , 100%) for their residues after experiment harvesting. In autumn season planted corn was (autumn season) in the same site of spring season under the same effect of the same factors studied in the first experiment in addition to the factor of the percentage of residues of the previous crop. Growth characteristics, plant height and dry matter yield were studied. After harvesting, the yield characteristics were studied (number of rows, weight of cobs , weight of 500 seeds , grain yield) for each experimental unit to determine the effect of the studied factors on it. Results showed that there was no significant difference between the NT system and the RT system in the characteristic of plant height, both of which were significantly superior to the CT system, with a percentage greater than (2.13 and 1.9) % respectively. while for the dry matter yield the RT system was significantly superior to NT, with a percentage greater than (6.14)% and was not significant with CT. As for the yield characteristics the RT system significantly superior the NT system and the CT system in the characteristic (number of rows , weight of cobs , weight of 500 seeds , and grain yield) for the yield of maize (autumn season) and a percentage of superiority of (7.2 , 8.7 , 4.2 and 11.2) % respectively, compared to the lowest average. Also, clover residues were significantly superior over the corn residues (spring season) in plant height and dry matter in the rate of (1.72 and 8.66) % respectively, in percentase superior to (NS , 14.8 , 7.2 and 15.5 )% in the number of rows and weight of sprouts and weight of 500 seeds and the grain yield on respectively of the corn crop (autumn season) cultivated according to the crop rotation system. By increasing the level of residues from 0% to the level of 100%, the growth characteristics of plant height and dry matter increased significantly, the increase superior was (2.78 and 40.85)% , respectively. As for yield characteristics (weight of cobs , weight of 500 seeds , and grain yield) of corn yield (autumn season ) the level 100% superior on level of 0% from residues values ​​(263.34 g and 178.40 g and 6685.09 kg ha-1) and in the rate (10.5 , 7.6 and 16)%, respectively. As for the number of rows there was no significant between the levels and the three interferences treatment NT.C.C2Re100% and RT.C.C2Re100% gave the high significance in plant height a value of (198.33) cm for both. The treatment is NT.C.C2Re100% with a value of (5663.9) kg ha-1 in dry matter yield and the treatment is RT.C.C1Re 100% in the number of rows a value of (16.33) row sp-1 and the treatment NT.C.C2Re 100% in the weight of 500 seeds a value of (189.11) g and in the grain yield total value (7740.4) kg ha-1 compared to the other study treatments.

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.

Uji Formulasi Pupuk Hayati Cair dengan Penambahan Bacillus Cereus terhadap Pertumbuhan dan Hasil Tanaman Jagung Manis (Zea Mays Saccharata Sturt.)

This study aims to determine the effect of giving several liquid biological fertilizer formulations with the addition of B. cereus and get the best formulation to increase the growth and yield of sweet corn. The field experiment was conducted in the Faculty of Agriculture experiment station, Riau University located in Pekanbaru from July 2018 to October 2018. The research was carried out experimentally using a completely randomized design consisting of five treatments with four replications. The treatments tested were P1: B. cereus without formulation, P2: 100 ml B. cereus + 1 l wastewater of rice + 1 g chitin + 100 ml molasses, P3: 100 ml B. cereus + 1 l wastewater coconut + 1 g chitin + 100 ml molasses, P4: 100 ml B. cereus + 1 l tofu liquid waste + 1 g chitin + 100 ml molases, P5: 100 ml B. cereus + 1 l palm oil mill effluent + 1 g Chitin + 100 ml molasses. The parameters observed were plant height, age of female flower emergence, harvest age, stem diameter, weight of cob with cornhusk, weight of cob without cornhusk, length of cob without cornhusk, diameter of cob without cornhusk, number of rows of corn kernels. The results showed that all treatments have not been able to improve the growth response and yield of corn plants and all formulations of B. cereus biological fertilizer tested have not found the best formulation.

PENGARUH ZPT TERHADAP PERTUMBUHAN DAN PRODUKSI BEBERAPA VARIETAS JAGUNG MANIS (Zea mays L.) DI LAHAN SALIN

This study aims to determine the effect of zpt on the growth and production of some sweet corn varieties in the saline field. This research was conducted in May until July 2017. The research used factorial randomized block design with 15 treatments and 4 replications. The parameters observed were plant length, number of leaves, flowering age of male and female, length of cob, number of cobs of crop, weights of cob and weight of 100 seeds per plot. The results showed that the observation of varieties treatment was significantly different to the height of tanama (cm) and weight of 100 seeds (gram). Observation of the treatment of ZPT Atonik and Novelgro Alpha was significantly different to the parameters of plant height (cm), number of leaves (strands), harvest age, cob length (cm) and cob weight (gram). The observation of interaction treatment between varieties and ZPT Atonik and Novelgro Alpha had significant effect on plant height (cm), number of leaves (strands), number of cobs, gram length and gram weights.