scholarly journals Model for Economic Analysis of Fungicide Usage in Hybrid Corn Seed Production

Plant Disease ◽  
1997 ◽  
Vol 81 (4) ◽  
pp. 415-422 ◽  
Author(s):  
S. N. Wegulo ◽  
C. A. Martinson ◽  
J. M. Rivera-C. ◽  
F. W. Nutter
Keyword(s):  
Seed Production ◽  
Wholesale Price ◽  
Economic Benefits ◽  
Production Factor ◽  
Yield Data ◽  
Hybrid Corn ◽  
Net Return ◽  
Corn Seed ◽  
Seed Corn ◽  
Seed Company

A model was used to determine the economic benefits of using fungicides to control foliar diseases of seed corn. The components of the model were (i) increased net return to the seed company from fungicide usage, (ii) increased income, based on a wholesale price of $30 per unit of 80,000 seeds and a premium of $2 per unit of medium-sized seed, and (iii) increased expenses, calculated as the sum of fungicide and fungicide application costs, cost of processing increased seed, and increased payment to the grower by the seed company. Increased payment to the grower was calculated as the product of increased seed yield (before separation into fractions), May futures price for no. 2 commercial corn on 1 March, and an average inbred production factor. Increased net return was calculated by subtracting increased expenses from increased income. Yield data were obtained from fungicide trial experiments in commercial hybrid corn seed production fields in Iowa from 1990 to 1993. Of 169 fungicide treatments applied, 64 and 79% were profitable to the seed company and to the grower, respectively. The results from this study indicate that fungicide usage in hybrid corn seed production can be economically beneficial.

scholarly journals Analysis of Added Value of Nasa Hybrid Corn Seed Propagation 29 in Mamuju Regency

2021 ◽  
Vol 2 ◽  
pp. 104-120
Author(s):  
Ketut Indrayana ◽  
Hesti Rahasia ◽  
Marthen P.Sirappa
Keyword(s):  
Agricultural Research ◽  
Economic Benefits ◽  
Added Value ◽  
Yield Potential ◽  
Maize Seed ◽  
Hybrid Corn ◽  
Corn Seed ◽  
Maize Varieties ◽  
Seed Propagation ◽  
Hybrid Maize

Need  for corn is increasing, both for food, animal feed, and industrial raw materials. This is an opportunity as well as a challenge for the government in increasing corn production towards sustainable self-sufficiency. Superior varieties are one of the components that can significantly increase yield. Hybrid varieties have a higher yield potential than composites so that the use of hybrid corn seeds can increase the yield of corn per crop area. The Agricultural Research and Development Agency (Balitbangtan) has produced hybrid maize varieties with high yield potential, which are no less competitive with other private hybrid maize, but they are not well disseminated. In order to obtain added value for farmers and the development of Balitbangtan corn seeds, NASA 29's hybrid corn seed propagation was carried out at the farmer level. The study was carried out in Salukayu Village, Papalang District, Mamuju Regency in 2018 covering an area of ​​1 ha. The results showed that corn seeds were 1.5 tons / ha. The Nasa 29 hybrid maize seed propagation farm is economically feasible and profitable, as indicated by the R / C value of 2.35, TIP 637 kg / ha, TIH Rp. 10,623, - / kg and IK Rp. 88,985, / day. The study of the propagation of the NASA 29 hybrid maize seed was financially feasible and the economic benefits were high and efficient.

A genic substitute for isolation in hybrid corn seed production

1953 ◽  
Vol 7 (4) ◽  
pp. 382-384 ◽  
Author(s):  
Oliver E. Nelson
Keyword(s):  
Seed Production ◽  
Hybrid Corn ◽  
Corn Seed

scholarly journals Socio-economy dynamics of hybrid corn farmers in South Sulawesi

2021 ◽  
Vol 911 (1) ◽  
pp. 012088
Author(s):  
Sarintang ◽  
Muh. Yasin ◽  
Amiruddin Syam ◽  
A. Adriani W ◽  
Muslimin
Keyword(s):  
Seed Production ◽  
Seed Quality ◽  
Economic Life ◽  
Government Support ◽  
Social Constraints ◽  
Hybrid Corn ◽  
Corn Seed ◽  
Farming Community ◽  
The Government ◽  
Planting Distance

Abstract The development of agriculture through technological processes in the field of agriculture is a dynamic of society that results in certain changes in its socio-economic life. The changes that occur in the farming community of hybrid corn seed production include changes in social aspects and economic aspects. In an effort to increase the production and productivity of hybrid corn, quality seeds are needed. To obtain quality seeds, internal and external monitoring is required in accordance with the management of seed quality standards. In seed production, there are two obstacles that are often faced, including social constraints in setting planting distance and time isolation, roguing, and detasseling. Economic constraints are caused by limited capital owned by farmers and the marketing system that is tied to the rights of seed licensors. To anticipate the obstacles that arise in the farming community, the role of the government is needed to take various steps and policies that can support farmers in dealing with their problems. In this case, government support is highly expected in determining the mapping of the seed area so that it can guarantee the purity of the crop in seed production.

scholarly journals Advantages of Hybrid Corn Seed Production Compared to Corn Grain

2020 ◽  
Vol 8 (1) ◽  
pp. 44
Author(s):  
Bahtiar Bahtiar ◽  
B Zanuddin ◽  
M Azrai
Keyword(s):  
Grain Yield ◽  
Seed Production ◽  
Cost Ratio ◽  
Hybrid Corn ◽  
Corn Seed ◽  
Benefit Cost Ratio ◽  
Income Data ◽  
Benefit Cost ◽  
Corn Grain ◽  
Corn Grain Yield

Corn seed breeders are indispensable in the supply of superior hybrid corn seeds.  Its ability to produce seeds is evaluated for their superiority compared to the production of corn grain yield. A study was conducted in Jatirogo District, Tuban Regency, East Java province in July to December 2019. Involving farmers cooperator implementing hybrid corn seed production in the area of 96 ha and non cooperator farmers who produce the corn grain yield in the same location.  We observed the variables:  cost of production, yield and farmers income. Data and information were analyzed by Benefit Cost Ratio (B/C) and Marginal Benefit Cost Ratio (MBCR). The results showed that farmers who produced hybrid corn seeds of Nasa-29 variety (cooperators) were able to produce 4.6 t/ha of wet cobs with an income of IDR. 19,470,000/ha, while farmers who produced   grain corn of 7.9 t/ha with an income of IDR. 15,943,000/ha.  MBCR analysis showed that, the switching is able to added the farmer income Rp.4,100 for every use cost Rp.1,000 as long as the seed procurement policy remains unchanged and related institutions continue to provide support.

scholarly journals Optimization of hybrid corn seed production in pollination systems at various parent seed planting ratios

2021 ◽  
Vol 911 (1) ◽  
pp. 012084
Author(s):  
Supratman Sirih ◽  
Wenny Tilaar ◽  
Sisilia Wanget ◽  
Jantje Pongo ◽  
Steivie Karouw ◽  
...  
Keyword(s):  
Seed Production ◽  
Male Plant ◽  
Agricultural Technology ◽  
Technology Research ◽  
Hybrid Corn ◽  
Corn Seed ◽  
The North ◽  
North Sulawesi ◽  
Pollination Systems ◽  
Male To Female

Abstract The research was carried out on land belonging to the North Sulawesi Agricultural Technology Research Center located at the Agricultural Technology Research and Assessment Installation (IP2TP) Address Talawaan Bantik Village, Wori District, North Minahasa Regency in February 2021. This study aims to analyze the different effects of spray pollination treatment on the ratio female and male parents to increase hybrid corn seed production and to obtain the best pollination vs ratio between male and female parents in increasing hybrid seed productivity. This study uses a 2 x 4 Factorial Experimental Design where factor S consists of 2 levels and factor R consists of 4 levels in the RAK pattern, namely: Factor S = Pollination with 2 levels (S1 = Spray Pollination, S2 = Natural Pollination) and Factor R = Male to Female Planting Ratio (R1 = 4 female plants vs. 1 male plant, R2 = 5 female plants vs. 1 male plant, R3 = 6 female plants vs. 1 male plant, R4 = full female plants: solation of male plants) for each treatment repeated 3 times. Based on the analysis of interaction variance, spray pollination treatment at a planting ratio of 6 : 1 was able to increase the yield of hybrid corn seed production. The results of the 5% BNT further test showed the values obtained from observations of the number of rows filled with seeds, the number of seeds in a row, the weight of 10 cobs without husks and the weight of shelled 10 cobs in a row, namely, 12.1, 23.6, 1166.7, 867, 3.

PERKECAMBAHAN BENIH JAGUNG (Zea mays L.) PADA BERBAGAI UMUR PANEN BENIH DAN KELEMBABAN MEDIA TANAM

EUGENIA ◽  
2012 ◽  
Vol 18 (3) ◽  
Author(s):  
Vilma Victa Rikumahu ◽  
Jantje Pongoh ◽  
J. M. Paulus
Keyword(s):  
Zea Mays ◽  
Zea Mays L ◽  
Single Factor ◽  
Hard Seed ◽  
Corn Seed ◽  
Seed Corn ◽  
North Sulawesi ◽  
Seed Harvest ◽  
Two Factors ◽  
Dead Shoot

ABSTRACT Research has been implemented as of July 2012, in the  BPSB Laboratory  of North Sulawesi Province i.e.: 1) to test the seed lacking in vigour during the Random Complete Design with three treatments of the various harvest ages, i.e. U1 (90 dasy), U2 (100 days) and U3 (110 days) treatments repeated four times; 2) in the greenhouse to see the amount of the normal, sprouts abnormal, seeds, hard seed and dead, shoot root ratio by using the Random Completed Design with two factors, respectively are : factorial in complete factors of the first different age harvest U1 (90 days), U2 (100 days) and U3 (110 days), the second factor granting of the water with different capacity P1 (3600 ml), P2 (2700 ml), P3 (1800 ml) and P4 (900 ml). Data analysis were found by the various analysis, however if there are different results, it would continue on the Smallest Significant Test. The results showed that, Electric Power Conductivity (EPC) affected by the age of harvest seed corn. The highest EPC at the harvest ages of 90 days and the lowest at 100 days and 110 days. It would be shown that the great value of EPC, the smallest amount of germination. There is no interaction between the age of abnormal seeds, hard seed die, shoot root ratio and high sprouts, but single factor treatment of harvest age and media planting humidity were significantly effected toward sprout normal, abnormal seed, hard seed die, shoot root ratio and high sprouts. Keywords : corn seed, harvest ages, humidity ABSTRAK   Penelitian dilaksanakan sejak bulan Juli 2012, penelitian pertama di Laboratorium Balai Penelitian dan Sertifikasi Benih (BPSB) Provinsi Sulawesi Utara, untuk menguji vigor benih menggunakan Rancangan Acak Lengkap dengan tiga perlakuan umur panen yang berbeda: U1 (90 Hari), U2 (100 Hari) dan U3 (110 hari) perlakuan diulang empat kali. Penelitian kedua di Rumah Kaca untuk melihat jumlah kecambah normal, abnormal, benih keras,benih mati dan nisbah pupus akar  menggunakan Rancangan Acak Lengkap disusun secara faktorial  dengan  2 faktor  masing-masing adalah : faktor pertama : Umur Panen yang berbeda, U1 (90 Hari), U2 (100 Hari) dan U3 (110 hari). faktor kedua pemberian air dengan kapasitas yang berbeda, P1 (3600 ml), P2 (2700 ml), P3 (1800 ml) dan P4 (900 ml). Data yang diperoleh menggunakan analisa ragam dan jika terdapat perbedaan perlakuan dilanjutkan dengan uji Beda Nyata Terkecil  (BNT). Hasil penelitian yang didapat adalah; Daya hantar listrik (DHL) dipengaruhi oleh umur panen benih jagung, DHL tertinggi pada umur panen 90 hari dan yang terendah umur panen 100 dan 110 hari. Hal ini menunjukan bahwa semakin besar nilai DHL semakin kecil jumlah perkecambahan. Tidak terdapat interaksi antara umur panen benih dan kelembaban media tanam terhadap jumlah kecambah normal, abnormal, benih keras, benih mati, nisbah pupus akar dan tinggi kecambah tetapi secara tunggal faktor perlakuan umur panen dan kelembaban media tanam berpengaruh nyata terhadap kecambah normal, abnormal, benih keras, benih mati, nisbah pupus akar dan tinggi kecambah. Kata kunci : benih jagung, umur panen, kelembaban

CHANGES IN MOISTURE, TEMPERATURE, AND QUALITY OF CORN SEED DURING HIGH-TEMPERATURE DRYING

1989 ◽  
Vol 69 (3) ◽  
pp. 749-761 ◽  
Author(s):  
ULRICH HERTER ◽  
JOSEPH S. BURRIS
Keyword(s):  
Seed Quality ◽  
Inbred Lines ◽  
Drying Time ◽  
Temperature Changes ◽  
Corn Seed ◽  
Seed Corn ◽  
Seed Moisture ◽  
The Relationship ◽  
High Temperature Drying

Mechanical drying has frequently caused injury in corn seed. Changes in seed moisture, temperature, and quality were determined for inbred lines A632, B73 and Mo17 to define the relationship between these variables. Ears harvested at ca. 48 and 38% seed moisture could be dried at 50 °C for 4–15 h and 18–24 h, respectively, before germination started to decline linearly with prolonged 50 °C drying. Drying time at 50 °C, seed moisture, or embryo moisture after 50 °C drying could be used equally well for prediction of seed quality. Seedling dry weights often declined even when seed was dried for only a few hours at 50 °C. Temperature measurements within seeds indicated that evaporation cooled the seed no more than 5 °C. Drying susceptibility of seed parents varied greatly between years.Key words: Moisture, temperature changes, seed corn, drying

scholarly journals Socio-economic Factors Influencing Profitability of Rice Seed Production in Selected Areas of Bangladesh

2014 ◽  
Vol 12 (1) ◽  
pp. 33-40
Author(s):  
MZ Hoque ◽  
ME Haque
Keyword(s):  
Seed Production ◽  
Crop Production ◽  
Information Sources ◽  
Economic Benefits ◽  
Influential Factor ◽  
Farm Size ◽  
Economic Factors ◽  
Rice Seed ◽  
The Government ◽  
Socio Economic Factors

Seed is the foundation of agriculture for enhancing crop production. The economic benefits from the improved quality seed production help scaling up the livelihood standard as well as nutritional status of the common people. The study was carried out in three districts namely Jamalpur, Gazipur and Manikganj to identify the socio-economic dimensions of the government seed production project beneficiaries persuading profitability of rice seed production. Data were collected through intensive survey of randomly selected 211 sample respondents using pre-tested interview schedule. To examine the profitability of rice seed production, the gross margin and cost benefit analysis were carried out. Co-efficient of correlation and multiple stepwise regressions were employed to find out the determinants of profitability in rice seed production. Rice seed production was not found to be so profitable as investment in rice seed cultivation can produce average BCR of only up to 1.44, where highest BCR was found in Jamalpur (1.58) compared to Manikganj (1.48) and Gazipur (1.26). The results revealed that socio-economic factors have a profound influence on profitability of rice seed production as these factors combined explained 54.9 percent variation. Farm size, contact with information sources, knowledge on quality rice production and age of the respondents were identified as significant contributors in profitability of rice seed production, whereas contact with information sources was the single most influential factor (24.6%). Therefore, steps may be taken so that the seed-growers could directly be linked with more information sources dealing with seed production and marketing through the government initiatives to boost up the production as well as to ensure appropriate price of the farmers’ home grown seed. DOI: http://dx.doi.org/10.3329/agric.v12i1.19578 The Agriculturists 2014; 12(1) 33-40

Adapting the APEX Model to Simulate Detasseling in Inbred Corn for Hybrid Seed Production

2020 ◽  
Vol 63 (5) ◽  
pp. 1169-1179
Author(s):  
Manyowa Norman Meki ◽  
Jaehak Jeong ◽  
Thomas Gerik ◽  
June Wolfe ◽  
Louis Hassell ◽  
...  
Keyword(s):  
Grain Yield ◽  
Seed Production ◽  
Permutation Test ◽  
T Test ◽  
Hybrid Seed ◽  
Hybrid Seed Production ◽  
N Content ◽  
P Values ◽  
Seed Corn ◽  
Apex Model

HighlightsThe APEX model was adapted to simulate detasseling in inbred corn for hybrid seed production.The adapted model satisfactorily predicted detasseling effects on LAI, grain yield, and N content.An inbred corn model could be applied to evaluate best management practices for inbred corns.Abstract. Hybrid seed corn production comprises approximately 10% of the entire corn acreage in the U.S. Because of seed corn’s high economic value, and to maximize yields, seed corn growers often over-irrigate or apply nitrogen (N) fertilizers equal to or in excess of those recommended for commercial hybrid corn. Detasseling female corn inbred lines during hybrid corn seed production is critical to ensure the purity of seeds. In addition to the removal of tassels, detasseling also results in the removal of several leaves, which may lead to reduced seed yields. The objective of this study was to adapt the Agricultural Policy/Environmental eXtender (APEX) model to simulate the detasseling of female inbred corns in hybrid seed production. An APEX inbred corn model was developed to simulate the effects of detasseling and leaf removals on the development of inbred corn, leaf area index (LAI), grain yield, and grain N content. Growth characteristics of inbred corn were parameterized in APEX using data from a field study conducted in Nebraska. Overall, the APEX inbred corn model successfully predicted the effects of detasseling on LAI, grain yield, and grain N content under the conditions of the field experiment. There was a significant correlation between simulated and measured LAI (Pearson r = 0.86 and R2 = 0.74 at p = 0.05). The computed paired t-test and permutation test p-values indicated no significant differences between measured and simulated LAI. The mean simulation percent difference and percent bias (PBIAS) were respectively 4.2% and 4.7%, while measured and simulated LAI values had an average root mean square error (RMSE) of 0.14. The APEX model predicted grain yield with RMSE of 120 kg ha-1, mean simulation percent difference of 0.48%, and PBIAS of 0.26%. Like LAI, predicted grain yields exhibited significant correlation with field data (Pearson r = 0.99 and R2 = 0.97 at p = 0.05). Similarly, computed paired t-test and permutation test p-values indicated no significant differences between measured and simulated grain yields. Grain N content was predicted with RMSE of 6.75 kg N ha-1, mean simulation percent difference of 1.46%, and PBIAS of 2.45%. Predicted and measured grain N content values were correlated (Pearson r = 0.81 and R2 = 0.65 at p = 0.05), while the t-test and permutation test p-values indicated no significant differences between measured and predicted grain N content. Overall, detasseling effects were better predicted for grain yield than for LAI and grain N content as indicated by a Nash-Sutcliffe efficiency (NSE) of 0.92 compared to NSE values of 0.47 for LAI and 0.43 for grain N content. In conclusion, the hybrid seed corn industry could benefit from the application of inbred corn models that could allow growers to evaluate and identify optimal irrigation and N management practices for inbred corn, similar to the benefits that have been obtained with model simulation for commercial hybrid corn grain production systems. Keywords: APEX parameterization, Detasseling, Inbred corn, Leaf area index.

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