scholarly journals WEED CONTROL IN TOMATO WITH HALOSULFURON (SANDEA)

HortScience ◽  
2006 ◽  
Vol 41 (3) ◽  
pp. 505C-505
Author(s):  
Joseph G. Masabni

Experiments were conducted in the last 3 years to evaluate the safety and efficacy of halosulfuron (Sandea 75WG) application under the plastic mulch within 7 days of transplanting tomato. In 2003, tomato plants were transplanted daily from day 0 through 7 after halosulfuron 0.051 kg a.i./ha application. Plant survival and height were collected. Tomato plants survived all dates of transplanting treatments. Plant height indicated that plants transplanted early were taller than those transplanted late, only because they had more time to establish and grow in the field. In 2004, tomatoes were set on a 2-day interval from day 0 through 10 after halosulfuron application. Halosulfuron 0.025 or 0.052 kg a.i./ha had no effect on plant height or yield. In 2005, an experiment was initiated to determine whether addition of trifluralin to halosulfuron under the plastic mulch will improve grass control and remain safe to tomatoes. Halosulfuron at 0.025, 0.052, and 0.1 kg a.i./ha, was applied alone and combined with trifluralin 0.63 kg a.i./ha. All treatments were applied under the plastic mulch. Tomato plants were transplanted at 6 days after application (DBT) and 0 DBT. Halosulfuron 0.1 kg ai/ha resulted in slight stunting and yield reduction of tomato, whether applied at 6 or 0DBT. However, this stunting was not statistically significant. Trifluralin didn't affect tomato yield at 6DBT and significantly increased yields at 0DBT for 0.052 and 0.1 ka a.i./ha halosulfuron rates. Trifluralin reduced grass biomass but resulted in an increase of nightshade biomass. Halosulfuron was determined to be very safe on tomato growth and yield, even if tomato was transplanted on the same day of application. Trifluralin also was found to have little or no effect on tomato growth or yield, and appears to have a potential use as an herbicide for under plastic application in tomato production.

2018 ◽  
Vol 11 (2) ◽  
pp. 1-9
Author(s):  
Amelia Nur Suprianto ◽  
Tri Kurniastuti

This research aims 1) To determine the effect of interaction of different plant spacing and the provision of mulch to growth and yield of tomato plants. 2) To know the different spacing affect the growth and yield of tomato plants. 3) To know the use of mulch type effect on growth and yield of tomato plants. This research was conducted by using Randomized Block Design in Factorial (RAK) with 2 factors, first factor is plant spacing (J) consisting of 3 levels ie 40x30 cm (J1), 40x50 cm (J2), 40x70 cm (J3) . The second factor is mulch (M) consisting of 3 levels ie: without mulch (M0 / control), straw mulch (M1), plastic mulch (M2). The variables observed were plant height, number of branches, number of bunches, number of fruit, and fruit weight. Data were analyzed by using variance analysis (Anova), 5% level. The results showed that: There was no interaction between plant spacing and mulch on growth and yield of tomato plants. Treatment spacing 40x50 (J2) effect on the number of bunches of 35 HST, the weight of the first harvest fruit and total fruit weight. The use of straw mulch type (M1) has an effect on plant height, number of branches, number of 35 HST bunches, and total fruit weight.


HortScience ◽  
2005 ◽  
Vol 40 (4) ◽  
pp. 1000A-1000
Author(s):  
Maurice Ogutu

Different colored plastic mulches can influence tomato (Lycopersicon esculentum L.) growth and yield. A study was carried out to compare the effects of different colored plastic mulches and bare ground on growth and yield of tomato. Ten treatments, namely, control (bare ground), and plastic mulches (black smooth, red, black embossed, blue, olive, yellow, clear, white, and reflective) were replicated four times in a randomized complete-block design. Tomato variety `Sunstart' seeds were planted in flats filled with Jiffy Mix in a greenhouse in late Apr. 2004 and seedlings transplanted in early June 2004. The seedlings planted in white and reflective plastic mulches were taller than seedlings planted in black smooth, black embossed, clear, blue, red, and olive mulches by 24 July 2004. Weeds were growing underneath clear, yellow, and red plastic mulches, and squash bugs were observed in yellow plastic mulch treatment on 2 July. Cumulative marketable tomato yield was highest in plants grown in reflective and white plastic mulches, and lowest in plants grown in yellow plastic mulch. Marketable fruits from plants grown in reflective and white mulches were larger than fruits from other treatments. In comparison with black embossed plastic mulch, plants grown in reflective and white plastic mulches had 2 and 1.2 tons/acre higher marketable yields, respectively, than plants grown in black embossed plastic mulch.


2018 ◽  
Vol 11 (1) ◽  
pp. 1-9
Author(s):  
Amelia Nur Suprianto ◽  
Tri Kurniastuti

This research aims 1) To determine the effect of interaction of different plant spacing and the provision of mulch to growth and yield of tomato plants. 2) To know the different spacing affect the growth and yield of tomato plants. 3) To know the use of mulch type effect on growth and yield of tomato plants. This research was conducted by using Randomized Block Design in Factorial (RAK) with 2 factors, first factor is plant spacing (J) consisting of 3 levels ie 40x30 cm (J1), 40x50 cm (J2), 40x70 cm (J3) . The second factor is mulch (M) consisting of 3 levels ie: without mulch (M0 / control), straw mulch (M1), plastic mulch (M2). The variables observed were plant height, number of branches, number of bunches, number of fruit, and fruit weight. Data were analyzed by using variance analysis (Anova), 5% level. The results showed that: There was no interaction between plant spacing and mulch on growth and yield of tomato plants. Treatment spacing 40x50 (J2) effect on the number of bunches of 35 HST, the weight of the first harvest fruit and total fruit weight. The use of straw mulch type (M1) has an effect on plant height, number of branches, number of 35 HST bunches, and total fruit weight.


Author(s):  
Jamer Alexis Ramírez-Jiménez ◽  
Lilliana María Hoyos-Carvajal ◽  
Oscar De Jesús Córdoba-Gaona

The BBCH (Biologische Bundesanstalt, Bundessortenamt und CHemische Industrie) scale is a system that helps producers monitor phenology by employing a uniform methodology across different locations. This study aimed to evaluate the effect of different scion×rootstock combinations on tomato yield and accumulated degree days for each tomato phenological stage. A randomized block design with four repetitions and four treatments was used. Tomato cv. Libertador seedlings were used as a shoot, self-grafted, and over the rootstocks ‘Olimpo’ and ‘Armada’. In addition, there was a non-grafted plant control. There were no significant differences for the accumulated degree days between the treatments since the tomato cultivation required 2,567°Cd-1. The variables, such as plant height, internode number and length, and number of flowers, did not vary significantly between the grafting and non-grafting treatments. The tomato plants grafted over a vigor rootstock produced 39.4 and 20.6% more first category fruits and total fruit yield than non-grafted ones. The heat units necessary to complete the tomato production cycle was not affected by the grafting, and the use of a vigor rootstock had a positive effect on the tomato yield under plastic house conditions.


HortScience ◽  
2005 ◽  
Vol 40 (3) ◽  
pp. 887e-887 ◽  
Author(s):  
Joseph G. Masabni

Halosulfuron (Sandea 75WG) is labeled for pre- or posttransplant use in tomato, cucumber, cantaloupe, among other vegetable crops. For pretransplant usage, the label specifies a 7-day waiting period after halosulfuron application under the plastic mulch before transplanting tomatoes. This period may be too long for growers who are busy in the spring with planting and pesticide sprays while on a race with the constantly changing climate of early spring. Experiments were conducted in the last 2 years to determine whether transplanting tomato within 7 days of halosulfuron application had any deleterious effects on tomato. In 2003, tomatoes were transplanted daily from day 0 through 7. Plant survival and height were collected. Tomato plants survived all dates of transplanting treatments. Plant height indicated that plants transplanted early were taller than those transplanted late, only because they had more time to establish and grow in the field. There was no adverse effect to tomato growth. In 2004, tomatoes were set on a 2-day interval from day 0 through 10 after halosulfuron application under the plastic mulch. Plant height, visual rating, % early blight infection, and yields were collected. A severe early blight infection confounded the results of herbicide applications. Still, it was clear that halosulfuron 0.026 or 0.051 kg a.i./ha had no effect on plant height or visual rating. Yields were not statistically different from those of the control, when the effect of early blight was factored out.


2019 ◽  
Vol 21 (1) ◽  
pp. 15-21
Author(s):  
Nanik Setyowati

[EFFECT OF WEED COMPOST AND SYNTHETIC FERTILIZER DOSAGE ON TOMATO GROWTH AND YIELD (Lycopersicum esculentum Mill.)]. The growth and yield of tomato plants are influenced by fertilizer and nutrient content in the soil. This study aims to investigate the effect of a combination of synthetic fertilizer and weed compost on the growth and yield of tomato plants. The study was conducted in November 2016 through June 2017 in Agronomy, Faculty of Agriculture, University of Bengkulu, at an altitude of ± 10 m above sea level using a Completely Randomized Design (CRD). The treatments consisted of  synthetic fertilizer at a rate of  180 kg/ha N, 150 kg/ha P2O5 and 100 kg/ha K2O (control), grass compost 30 , 40 and 50 tons/ha, 50% control + grass compost 15 tons/ha, 50% control + 20 tons/ha grass compost and 50% control + 25 tons/ha grass compost. The results revealed that the vegetative growth of tomato plants fertilized with grass compost 30 tons/ha and a combination of grass compost + 50% control did not differ from control treatment. Tomato yield fertilized with grass compost 30 tons/ha and a combination of 50% control + 15 tons/ha grass compost was higher than the control treatment. Therefore, 15 tons/ha of grass compost can reduce the dose of synthetic fertilizer by 50%.


AGRIFOR ◽  
2018 ◽  
Vol 17 (2) ◽  
pp. 231
Author(s):  
Dian Kristina ◽  
Abdul Rahmi

This experiment aims to: (1) to study of the effect of guano walet fertilizer and Ratu Biogen foliar fertilizeras well as their interaction on the growth and yield of tomato plants; and (2) to find proper dosage of guano walet fertilizer and proper concentration of Ratu Biogen foliar fertilizer for better growth and yield of tomato plants.The research carried out from May 2014 to July 2014, in the Village Melak Ulu RT.20 Subdistrict Melak, West Kutai. It applied Completely Randomized Design with factorial experiment 4 x 4 and five replications.  The first factor is the dosage of the guano walet fertilizer (G) consists of 4 levels, namely: no fertilizer application guano walet (g0), 10 Mg ha ̵ ¹, or 100 g of polybag ̵ ¹ (g1), 15 Mg ha ̵ ¹ or 150 g polibag ̵ ¹ (g2), 20 Mg ha ̵ ¹ or 200 g polybag ̵ ¹   (g3). The second factor is the concentration of Ratu Biogen (B) consists of 4 levels: without POC Ratu Biogen (b0), 1 ml 1 ̵ ¹ water (b1), 2 ml 1 ̵ ¹ water (b2), 3 ml 1 ̵ ¹  water (b3).Result of the research revealed that : (1) application of guano walet fertilizer affect very significantly on plant height at 14, 28, 42 days after planting, the number of fruits per plant, and weight of fruit per plant, but the effect is not significant on the days of plant flowered and days of plant harvest.  The best production is attained by the 200 g polybag-1 fertilizer guano walet (g3), namely 282,50 plant-1, In reverse, the least production is attained by without fertilizer guano walet (g0), namely 227,25 g plant ̵ ¹; (2) application of Ratu Biogen foliar fertilizer after significantly to very significantly on the plant height at 14 days after planting  and the number of fruits per plant, but the effect is no significant on the plant height at 28 and 42 days after planting, days of plant flowered, days of plant harvest, and weight of fruit per plant; and (3) interaction between guano walet fertilizer and Ratu Biogen foliar fertilizer no significantly on the plant height at 14, 28, and 42 days after planting, days of plant flowered, days of plant harvest, number of fruit per plant, and fruit weight per plant.


Weed Science ◽  
2007 ◽  
Vol 55 (2) ◽  
pp. 169-177 ◽  
Author(s):  
Michael L. Lovelace ◽  
Ronald E. Talbert ◽  
Eric F. Scherder ◽  
Robert E. Hoagland

Quinclorac drift has been speculated as the cause of injury to tomato crops throughout northeast Arkansas. In this study, we set out to determine whether tomato plant injury and yield reduction were correlated with simulated quinclorac drift. Experiments were carried out at Fayetteville, AR, in 1999 and 2000. Maximum plant injury (visual ratings) was about 20% when plants were treated with one, two, or three quinclorac applications (weekly intervals beginning at first flower) at 0.42 g ai ha−1(0.001 times the normal use rate to simulate drift). Maximum plant injury ranged from 48 to 68% with quinclorac simulated drift treatment of 42 g ha−1. Overall, increasing quinclorac rate and number of applications increased tomato injury. In both years, tomato plant fresh-weight accumulation was not influenced by one, two, or three applications of quinclorac at 0.42 g ha−1compared with the untreated control. In 1999, increasing the rate of quinclorac from 0.42 to 4.2 g ha−1reduced plant fresh-weight accumulation. In 2000, there was no significant difference in plant fresh weight when plants were treated with quinclorac at 2.1 to 4.2 g ha−1. Evaluation of the herbicide rate effect indicated that quinclorac at 0.42 g ha−1did not reduce tomato fruit yield (total weight of edible fruit) compared with the untreated control, but yield decreased as rate increased above 0.42 g ha−1. Increasing the number of applications generally decreased tomato yield, and overall as maximum visual plant injury increased, tomato yield reduction ALSo increased linearly. We conclude that quinclorac at simulated drift rates can adversely affect tomato plant growth and yield.


Author(s):  
F. B. Musa ◽  
F. O. Abiodun ◽  
A. R. Falana ◽  
B. H. Ugege ◽  
R. V. Oyewumi ◽  
...  

Background and Objective: Unproductive soil has been a major problem to farmers, recent interest in the use of a stable organic manure (biochar) as soil amendment and poultry manure to increase soil fertility is also increasing. Hence, the experiment was conducted to assess the condition of poultry manure and biochar on the growth and yield of tomato. Materials and Methods: A greenhouse experiment was conducted at the Federal College of Forestry Ibadan, using polyethylene bag with 5 kg soil collected at two (2) soils depths, 0-15 cm and 15-30 cm depth at the botanical garden, Federal College of Forestry Ibadan. The experiment was arranged in a completely randomized design (CRD) with four replicates. The treatments used were poultry manure (5t/ha), biochar (10t/ha), mixture of poultry manure and biochar (1:1) and control (no amendment).The tomato seeds (UC82B) were sourced from NIHORT, Ibadan and raised in a germination basket. Data were collected weekly on plant height, collar diameter and number of leaves, 50% days to flowering and yield of tomato plants from two weeks after transplanting (WAT). Data collected were analyzed statistically using ANOVA while means were separated using LSD (p<0.05) where applicable. Results: In 0-15 cm soil, the growth variables (plant height, number of leaves and collar diameter) increased with various treatments used. The highest tomato height was observed with the application of biochar (10t/ha). All the treatments applied affected the number of tomato leaves at all weeks after transplanting (WAT) with poultry manure 5t/ha having the highest number of leaves at 7WAT, while collar diameter was significantly affected by various treatments from 2 to 5 WAT, with the mixture of P.M + BIO (1:1) recording the highest value and the control plot recorded the least values in all weeks. However, in 15-30 cm soil, there was  significant difference in the number of leaves of tomato among all the amended soil from 5 to 7 WAT, the highest tomato leaves were obtained when the soil was amended with poultry manure (5t/ha) and can be compared with other treatments. Interaction of poultry manure and biochar(1:1) and poultry manure 5 t/ha resulted in highest height of tomato plant from 3-7 WAT as compared to the control that had the least value but were not significantly different from the sole application of  biochar 10t/ha. Interaction of poultry manure + biochar (1:1) and poultry manure (5t/ha) gave the highest tomato flowering and fruits. Conclusion: Based on this result, biochar and poultry manure when added to soil, boosted the mineralization of the soil after amendment.


2001 ◽  
Vol 11 (1) ◽  
pp. 150
Author(s):  
Mary C. Akemo ◽  
Mark A. Bennett ◽  
Emilie E. Regnier

Pure and biculture stands of rye `Wheeler' (Secale cereale L.) and field pea (Pisum sativum L.) were established and killed for mulch in Spring 1996, 1997, and 1998, in Columbus, Ohio. Treatments were five rye to pea proportions, each with a high, medium, and low seeding rate. Their effects on tomato (Lycopersicon esculentum Mill.) growth and yield were compared with those of a weedy check; a tilled, nonweeded check; and a tilled, hand-weeded check. Tomato tissue and soil were sampled for nutrient analysis. Number of leaves, branching, height, leaf area, dry weight, rate of flowering and fruit set, and fruit yield of tomato plants varied directly with the proportion of pea in the cover crop and decreased with reduced cover crop seeding rates. In 1997, yields of tomato were as high as 50 MT·ha-1 in the 1 rye: 3 pea cover crop; yield was poorest in the weedy check (0.02 MT·ha-1 in 1996). Most of the cover-cropped plots produced better yields than did the conventionally weeded check. No consistent relationship between levels of macronutrients in tomato leaf and soil samples and the cover crop treatments was established. Spring-sown rye + pea bicultures (with a higher ratio of pea) have a potential for use in tomato production.


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