Maize Yield Losses Due to Farmers' Use of Own Seed Saved from Previous Maize Crop

Ochieng, J.; Tanga, H.M.

doi:10.1080/00128325.1995.11663273

Cited by 3 publications

(3 citation statements)

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“…Yield was reduced 45.3% on average in the Nayarit region of Mexico. Ochieng and Tanga (1995) found the same result for the use of F 2 seed in maize. They suggest that FSS should not be used in maize.…”

supporting

confidence: 61%

“…In most cases, canola yield was 13.5 to 16% higher with HYC compared with HY-FSS, which is comparable with that reported in Mexico (Cervantes Martinez and Castillo Torres, 2005). Other studies showed yield reductions of up to 50% with maize, 12% with winter wheat, and 15 to 20% with winter rye from farm-saved seed compared with the pure hybrid seed (Ochieng and Tanga, 1995;Guillen-Portal et al, 2002;Lapinski and Stojalowski, 1999). A popular perception in the farm community was that increased seed rates or using large seed could improve yield of HY-FSS to be similar to HYC.…”

Section: Discussionmentioning

confidence: 94%

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Comparison of Certified and Farm‐Saved Seed on Yield and Quality Characteristics of Canola

et al. 2009

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Relatively high seed prices and low canola (Brassica napus L.) grain prices created a controversy over using farm-saved seed from hybrids. Agronomic implications of saving seed from a canola crop were investigated by planting certifi ed seed and saved-seed of an open-pollinated and a hybrid canola cultivar at eight site-years in Saskatchewan and Alberta, Canada. In one series of experiments cultivars and seed rates were compared, while in another experiment seed treatments and use of sized seed were investigated. Results tend to agree with similar studies with other crops where agronomic performance was unaff ected when farm-saved seed from open-pollinated crops was used, but declined when this practice was used with hybrid cultivars. Using farm-saved seed from hybrid canola (HY-FSS) compared with hybrid certifi ed seed (HYC) reduced plant population density by 16 to 18% at the time of crop maturity and yield by an average of 12%, delayed maturity by 2 d, reduced seed oil content by 5 g kg -1 , and resulted in a small increase in incidence of green seed. Yield and quality loss associated with using HY-FSS could not be recovered by using increased seeding rates or by sizing and planting only large seed. Th e inability to use the most eff ective combined insecticide plus fungicide seed protectant treatments with farm-saved seed resulted in a 20% yield loss compared with treated certifi ed hybrid seed. Our study demonstrates the production risks of growing HY-FSS on plant density, yield, maturity, and seed oil content.

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supporting

confidence: 61%

Section: Discussionmentioning

confidence: 94%

Comparison of Certified and Farm‐Saved Seed on Yield and Quality Characteristics of Canola

et al. 2009

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“…The NR benefits of certified seed will be determined by the yield advantage of certified seed, price of the crop, and the cost of seed. The economic benefit of using HYC corn ( Zea mays L.) seed is high because of the large yield advantage, which was confirmed by Valdivia‐Bernal and Vidal‐Martinez (1995) and Ochieng and Tanga (1995) Commercial corn producers do not consider any other seed source. The economic benefit of using HYC wheat ( Triticum aestivum L.) seed is less clear.…”

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confidence: 97%

The Profitability of Seeding the F₂ Generation of Hybrid Canola

Smith

Favret²,

Clayton

et al. 2010

Agronomy Journal

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Th e high cost of hybrid (HY) canola (Brassica napus L.) seed has some producers considering F 2 generation hybrid farm-saved seed (HY-FSS), or open-pollinated (OP) varieties (both certifi ed and farm-saved seed). Th e net return (NR) of diff erent varieties, genetic backgrounds, seeding rates, seed treatments, and seed sizing was evaluated from three experiments over eight site-years of fi eld data from western Canada. One set of experiments included variety, genetic background and seeding rate, while another included seed treatment, genetic background and seed sizing. Th e experiments used randomized complete block designs. Th e NR accounted for yield, green seed price discount, seed costs, and other production costs. Analysis of variance indicated certifi ed F 1 hybrid seed (HYC) was more profi table than HY-FSS (15%, P = 0.0057) and OP (22%, P = 0.0001). With delayed weed control, NR was lower for HYC and not statistically diff erent than HY-FSS. Higher seeding rates and seed sizing for HY-FSS did not increase NR compared to HYC. Th e fi ndings of this study support the use of HYC canola seed, especially at high canola prices. Canola producers will not increase their NR by using HY-FSS or OP seed to reduce their seed cost because the lost value of production exceeds the higher cost of HYC seed.

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Recycling Hybrid Maize Varieties: Is It Backward Practice or Innovative Response to Adverse Conditions in Kenya?

Japhether¹,

Groote²,

Lawrence³

et al. 2006

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Maize Yield Losses Due to Farmers' Use of Own Seed Saved from Previous Maize Crop

Cited by 3 publications

References 0 publications

Comparison of Certified and Farm‐Saved Seed on Yield and Quality Characteristics of Canola

Comparison of Certified and Farm‐Saved Seed on Yield and Quality Characteristics of Canola

The Profitability of Seeding the F₂ Generation of Hybrid Canola

Recycling Hybrid Maize Varieties: Is It Backward Practice or Innovative Response to Adverse Conditions in Kenya?

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Maize Yield Losses Due to Farmers' Use of Own Seed Saved from Previous Maize Crop

Cited by 3 publications

References 0 publications

Comparison of Certified and Farm‐Saved Seed on Yield and Quality Characteristics of Canola

Comparison of Certified and Farm‐Saved Seed on Yield and Quality Characteristics of Canola

The Profitability of Seeding the F2 Generation of Hybrid Canola

Recycling Hybrid Maize Varieties: Is It Backward Practice or Innovative Response to Adverse Conditions in Kenya?

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The Profitability of Seeding the F₂ Generation of Hybrid Canola