Cropping system influences Tomato spotted wilt virus disease development, thrips population and yield of tomato (<i>Lycopersicon esculentum</i>)

Ramkat, Rose C.; Wangai, Anne; Ouma, Josephine P.; ., P.N. Rapando; Lelgut, David K.

doi:10.1111/j.1744-7348.2008.00268.x

Cited by 13 publications

(7 citation statements)

References 22 publications

(23 reference statements)

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“…Previous studies have reported inconsistent intercropping effects on tomato yields, which were unaffected by intercropping with kale, onion, and lettuce but reduced by intercropping with maize and garlic (Liu et al, 2014;Ramkat et al, 2008). The negative intercropping effects on the yields may be partly related to synchronization of maximum requirements for growth resources by the intercropped species (Fukai and Trenbath, 1993).…”

Section: Resultsmentioning

confidence: 93%

“…In previous studies, the intercropping effects on tomato yield varied with different intercropped crops. In a field production trial performed in Kenya, intercropping tomato with onion and kale did not reduce marketable tomato yields compared with monocropping tomato; however, intercropping tomato with maize reduced the tomato yields, possibly due to the taller canopy of maize than other intercrops (Ramkat et al, 2008). In a tomato/garlic intercropping system using organic medium under plastic tunnels in China, intercropping reduced the total spring tomato yield than did monoculture of tomato, possibly due to its competition with garlic for nutrients and water (Liu et al, 2014).…”

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confidence: 91%

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Effects of Within-row Intercropping with Snow Peas on Yield and Quality of Cherry Tomatoes in an Organic High Tunnel Production System

Kong¹,

Schiestel²,

Llewellyn³

et al. 2020

horts

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Intercropping can increase land use efficiency in high tunnel crop production, but it may also lead to decreases in yield and quality of main crops due to the potential competition for resources. This study evaluated the agronomic viability of intercropping snow pea (Pisum sativum L., ‘Ho Lan Dou’) with cherry tomato (Solanum lycopersicum L. var. cerasiforme ‘Sarina hybrid’) without additional inputs of water and fertilizers on peas in an organic high tunnel production system under Southern Ontario climate conditions in Guelph, Ontario, Canada (lat. 43.5 °N, long. 80.2 °W) during 2015 and 2016. In each 80-cm-wide bed, the tomato crops were planted alternately in double rows spaced 30 cm apart, with in-row spacing of 110 cm, which resulted in a planting density of ≈24,000 plants/ha. The snow pea seeds were sown between the tomato plants (i.e., within the same beds as tomatoes) in holes (two seeds per hole), with four rows in each bed and in-row holes spaced 10 cm and at least 25 cm away from the tomato plants, which resulted in a seeding rate of ≈650, 000 seeds/ha. The same amount of water or fertilizer was applied to the intercropping and nonintercropping plots based on the needs of the cherry tomato plants. Plant growth, fruit yield, and quality were compared between tomato plants with and without intercropping. Intercropping with snow peas did not affect total marketable fruit yield, unmarketable fruit percentage, fruit quality traits (e.g., individual fruit weight, soluble solids content, dry matter content, and postharvest water loss), or early-stage plant growth of the cherry tomato. Therefore, it is at least an agronomical possibility to intercrop snow peas with cherry tomatoes on the same beds without additional inputs of water and fertilizer on snow peas in an organic high tunnel system. The additional yield of pea shoots or pods in the intercropping treatment also increased economic gross returns in the high tunnels, although the economic net return might vary with the costs of seeds and labor involved in snow pea growing.

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Section: Resultsmentioning

confidence: 93%

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confidence: 91%

Effects of Within-row Intercropping with Snow Peas on Yield and Quality of Cherry Tomatoes in an Organic High Tunnel Production System

Kong¹,

Schiestel²,

Llewellyn³

et al. 2020

horts

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“…Cropping systems, on the other hand, are known to increase insect vector population and the emergence of MLN disease epidemics in maize. In intercropped versus mono-cropped systems, a significant number of assessment studies have demonstrated disease declines (Boudreau, 2013;Gopal et al, 2010;Ramkat et al, 2008).…”

Section: Discussionmentioning

confidence: 99%

Status of maize lethal necrosis disease in seed production system in Kenya

Eunice

Miano

W.M

et al. 2021

Cogent Food & Agriculture

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Maize production in Kenya is now under threat from the devastating maize lethal necrosis (MLN) disease in the field. This study was conducted to assess status of MLN in maize seed production fields from both small-and large-scale producers in Kenya. The survey was conducted in five Agro-ecological Zones (AEZ)s in 13 counties in 2015, 2017, 2018, and 2019. Sampling for asymptomatic and non-symptomatic was done using standardized protocol. On-site maize chlorotic mottle virus (MCMV) testing was performed by immunostrips followed by laboratory qRT-PCR test. A total of 2,550 ha was surveyed with 21% having MLN disease and varying levels of severity. The MLN incidence and severity was not significantly different (P > 0.05) in the various Kenyan sampled agroecological zones, counties, maize varieties, and maize growth stages. Elevated MLN incidences and severities were observed in sub-humid AEZs comprising Embu, Uasin Gishu, Nakuru, and Elegeyo Marakwet counties that form the hotspots for MLN disease. The main MLN-causing viruses detected using q-RT-PCR were MCMV and sugarcane mosaic virus (SCMV). Out of the total samples analyzed using qRT-PCR, 38% were found to have MCMV, 14% with SCMV, and 18% with both MCMV and SCMV. From the 185 sample analyzed with immunostrip from 2017 to 2019, 29 (16%) were positive for MCMV. Phytosanitary programs should be included in seed legislation for legal adoption and strategies to control the spread of MLN disease should focus on high-risk hotspots agroecological zones and counties.

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“…Due to shade, this may have caused a sort of partial blockage of sunlight by the corn or watermelon leaves, thus making thrips feel at home in the plant chili. Different results when corn is intercropped with tomatoes, such as a journal article in [17] comparing four intercropping systems involving kale, onions, corn, and tomatoes, found that the thrips population was lower than other intercropping combinations only that the weight of the tomatoes produced was low.…”

Section: A the Average Number Of Thrips Infesting Red Chili Plantsmentioning

confidence: 99%

The Role of Planting Patterns to Control Thrips from Red Chili Pepper Plants

Haerul*,

Agus,

Nasruddin

et al. 2020

IJRTE

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Chili plants are commodities that are vulnerable to various types of pests, one of the main pests is thrips. This study aims to determine the role of cropping patterns to control thrips from red chili plants, which was carried out in the Maros Regency, South Sulawesi. Planting patterns applied were: 1) chili using plastic mulch without the combination of other plants and the use of pesticides, 2) chili using plastic mulch combined with corn plants, 3) chili without plastic mulch combined with watermelon plants, 4) chili without plastic mulch combined with watermelon and corn plants, 5) chili without plastic mulch combined with corn plants and 6) chili using plastic mulch and pesticides (according to farmers' treatment). The results showed that the highest population of thrips was found in the chili cropping pattern without plastic mulch combined with watermelon and corn plants with as many as 15 T. parvispinus and 32 T. palmi thrips. Meanwhile, the chili planting pattern using plastic mulch without the combination of other plants and with the use of pesticides had the lowest average amount of thrips population weighing at 5.1 T. parvispinus and 9.5 T. palmi. T. parvispinuspopulation was lower at the beginning of the observation (during the vegetative period) and tends to increase during the generative period of chili plants. T. palmi shows the opposite trend, its population tends to be high at the beginning of plant growth (vegetative phase) and decreases its population when the plant enters the generative period. Based on the data and facts found during the study, it is concluded that: 1). The chili cropping pattern without plastic mulch combined with watermelon and corn plants showed the highest average number of thrips population compared to the other cropping patterns. 2). The abundance of populations of the two thrips species showed different fluctuations, where T. parvispinus populations tended to increase in line with plant development and T. palmi decreased according to plant development. 3). In general, the application of intercropping cropping patterns has not yet appeared to play a role in reducing the abundance of thrips population but there is an opportunity to apply cropping patterns as a method to control thrips by selecting plants that are more suitable to be combined with chili plants.

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Cropping system influences Tomato spotted wilt virus disease development, thrips population and yield of tomato (Lycopersicon esculentum)

Cited by 13 publications

References 22 publications

Effects of Within-row Intercropping with Snow Peas on Yield and Quality of Cherry Tomatoes in an Organic High Tunnel Production System

Effects of Within-row Intercropping with Snow Peas on Yield and Quality of Cherry Tomatoes in an Organic High Tunnel Production System

Status of maize lethal necrosis disease in seed production system in Kenya

The Role of Planting Patterns to Control Thrips from Red Chili Pepper Plants

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